Re: [CentOS-docs] Proposed change to HowTos/Skype
Am 20.07.11 16:10, schrieb John Fettig: If you want me to change this directly, my login is JohnFettig. I would be happy if e.g. Akemi Yagi (amy...@gmail.com) would add this info. You can change that yourself. Ralph ___ CentOS-docs mailing list CentOS-docs@centos.org http://lists.centos.org/mailman/listinfo/centos-docs
[CentOS-announce] Release for CentOS-6.0 LiveCD i386 and x86_64
We are pleased to announce the immediate availability of CentOS-6.0 LiveCD for i386 and x86_64 architectures. Detailed Release Notes are available at http://wiki.centos.org/Manuals/ReleaseNotes/CentOSLiveCD6.0 +++ Overview The CentOS-6.0 LiveCD is meant to be a Linux environment suited to be run directly from either CD media or USB storage devices. It does not need any persistent storage on a machine, which also makes it a suitable recovery environment. Due to space constraints, it was not possible to include all the traditional desktop applications on the LiveCD. You can though enjoy a Gnome basic desktop, view and modify pictures with gthumb and the Gimp, browsing the web with Firefox, send emails with Thunderbird and connect to your favorite Instant Messaging network with Pidgin +++ Download SHA256SUMs : CentOS-6.0-x86_64-LiveCD.iso: f7239593e425ea4c26c5292e23b5e284e64779f54af395486cf1fd4b3e6c7f3b CentOS-6.0-i386-LiveCD.iso: c4e09a2152a8e1b17dc6704eb8d7455c13f615e40432cb0b4b07f65850948628 The CentOS-6.0 LiveCD is released to all external mirrors and available for download now. List of mirrors is available at these urls : http://isoredirect.centos.org/centos/6/isos/i386/ http://isoredirect.centos.org/centos/6/isos/x86_64/ There are no torrent files for these LiveCD images since the overall size of download is small enough that it can be easily downloaded via http and ftp mirrors. Given the very large and diverse CentOS Mirror network, we expect most people to get fairly good download rates for these iso images. Once you download the images, its important to verify contents using the sha256sum utility, against the published sums here. +++ Notes You can now install the Live environment to your hard disk (which wasn’t possible with the 5.x Live medias). Please note that you need more that 512Mb of ram to be able to use that ‘install to hard drive’ feature (If you have less than 512Mb of ram, you can install to disk but in text-mode, meaning that instead of clicking on the desktop icon, you have to launch a gnome-terminal and launch the ‘liveinst’ command from within the terminal) There is no upstream Live media product. The Live media produced within the CentOS Project is based on and around the livemedia tools from the Fedora Project. These LiveCD’s only contains content found within the primary CentOS-6.0 distribution. No package from outside the distribution was included and no package has been changed from whats included in the base distribution. We appreciate all forms of feedback about these LiveCD, including specific application inclusion requests or feature changes in future releases. The best place to provide this feedback is via the centos-devel mailing list ( http://lists.centos.org/ ) and feature requests via the issue tracker ( http://bugs.centos.org/ ). Special thanks to Fabian Arrotin for taking up the LiveCD and LiveDVD efforts, and to everyone on the QA team who worked through the issues and helped build, test and release these images. -- Karanbir Singh The CentOS Project irc: z00dax, #cen...@irc.freenode.net ___ CentOS-announce mailing list CentOS-announce@centos.org http://lists.centos.org/mailman/listinfo/centos-announce
Re: [CentOS-es] Disco usb en Centos 6
2011/7/24 Cesar Augusto Martinez Cobo cmc...@ciencias.udea.edu.co: Buenas tardes Compañeros; tengo el siguiente inconveniente con un disco externo con conexion USB, lo tengo conectado para hacer nackup de el sistema pero cuando lo realiza sale el siguiente error: end_request: I/O error, dev sdc, sector 86537887 Buffer I/O error on device sdc1, logical block 10817228 Buffer I/O error on device sdc1, logical block 10817230 Buffer I/O error on device sdc1, logical block 10817231 Buffer I/O error on device sdc1, logical block 10817232 Buffer I/O error on device sdc1, logical block 10817233 Buffer I/O error on device sdc1, logical block 10817234 Buffer I/O error on device sdc1, logical block 10817235 Buffer I/O error on device sdc1, logical block 10817236 Buffer I/O error on device sdc1, logical block 10817237 Buffer I/O error on device sdc1, logical block 10817239 end_request: I/O error, dev sdc, sector 86537895 EXT3-fs error (device sdc1): read_block_bitmap: Cannot read block bitmap - block_group = 331, block_bitmap = 10846208 Aborting journal on device sdc1. journal commit I/O error Message from syslogd@matematicas at Jul 23 02:27:58 ... kernel:journal commit I/O error sd 4:0:0:0: [sdd] Assuming drive cache: write through sd 4:0:0:0: [sdd] Assuming drive cache: write through sd 4:0:0:0: [sdd] Assuming drive cache: write through EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 ext3_abort called. EXT3-fs error (device sdc1): ext3_journal_start_sb: Detected aborted journal Remounting filesystem read-only EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 Lugo reinicio el servidor y lo carga normal no se a que se debe esto, les agradeceria su colaboracion. Parece que el disco se muere como comentan acá, http://serverfault.com/questions/111985/usb-drive-becomes-read-only-after-a-while Quiero buscar esa parte donde se ejecuta el montaje de solo lectura, como lo menciona en tu error Remounting filesystem read-only De antemano muchas gracias Cesar Augusto Martinez Cobo Administrador de Sistemas Facultad de Ciencias Exactas y Naturales Universidad de Antioquia Tel: ++57(4)2195604 Medellin - Colombia ___ CentOS-es mailing list CentOS-es@centos.org http://lists.centos.org/mailman/listinfo/centos-es -- Saludos, cheperobert ___ CentOS-es mailing list CentOS-es@centos.org http://lists.centos.org/mailman/listinfo/centos-es
Re: [CentOS-es] Disco usb en Centos 6
En efecto, como comenta Carlos, El disco contiene sectores dañados, en estos casos solamente lo que queda es realizar un fsck y tratar de recuperar la la información lo antes posible. Suerte. Saludos -- Ricardo David Carrillo Sánchez Administrador de Sistemas Analista de Seguridad Informática PGP/GPG key fingerprint: 4EDE BEF9 2FAE AC73 8D5A B749 52CB C88B 0655 F2A0 PGP/GPG public key: http https://insecure-it.com.mx/keys/dominus.ceo.asc ://openinsecureit.mx/keys/dominus.ceo.aschttps://insecure-it.com.mx/keys/dominus.ceo.asc On Sun, Jul 24, 2011 at 4:07 PM, Cesar Augusto Martinez Cobo cmc...@ciencias.udea.edu.co wrote: Buenas tardes Compañeros; tengo el siguiente inconveniente con un disco externo con conexion USB, lo tengo conectado para hacer nackup de el sistema pero cuando lo realiza sale el siguiente error: end_request: I/O error, dev sdc, sector 86537887 Buffer I/O error on device sdc1, logical block 10817228 Buffer I/O error on device sdc1, logical block 10817230 Buffer I/O error on device sdc1, logical block 10817231 Buffer I/O error on device sdc1, logical block 10817232 Buffer I/O error on device sdc1, logical block 10817233 Buffer I/O error on device sdc1, logical block 10817234 Buffer I/O error on device sdc1, logical block 10817235 Buffer I/O error on device sdc1, logical block 10817236 Buffer I/O error on device sdc1, logical block 10817237 Buffer I/O error on device sdc1, logical block 10817239 end_request: I/O error, dev sdc, sector 86537895 EXT3-fs error (device sdc1): read_block_bitmap: Cannot read block bitmap - block_group = 331, block_bitmap = 10846208 Aborting journal on device sdc1. journal commit I/O error Message from syslogd@matematicas at Jul 23 02:27:58 ... kernel:journal commit I/O error sd 4:0:0:0: [sdd] Assuming drive cache: write through sd 4:0:0:0: [sdd] Assuming drive cache: write through sd 4:0:0:0: [sdd] Assuming drive cache: write through EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 ext3_abort called. EXT3-fs error (device sdc1): ext3_journal_start_sb: Detected aborted journal Remounting filesystem read-only EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 EXT3-fs error (device sdc1): ext3_find_entry: reading directory #2 offset 0 Lugo reinicio el servidor y lo carga normal no se a que se debe esto, les agradeceria su colaboracion. De antemano muchas gracias Cesar Augusto Martinez Cobo Administrador de Sistemas Facultad de Ciencias Exactas y Naturales Universidad de Antioquia Tel: ++57(4)2195604 Medellin - Colombia ___ CentOS-es mailing list CentOS-es@centos.org http://lists.centos.org/mailman/listinfo/centos-es ___ CentOS-es mailing list CentOS-es@centos.org http://lists.centos.org/mailman/listinfo/centos-es
[CentOS-es] Openvpn Centos 4.8
Hola, Tengo problemas con la instalación del OpenVPN, quisiera saber cómo lo desinstalo correctamente, actualmente seguí una guía pero cuando cargo el servicio me da error, revise el error en el registro /var/log/openvpn.log, pero no entiendo mucho la causa. Espero su ayuda y si algo una buena guía para la instalación. Gracias. Att. Alex ___ CentOS-es mailing list CentOS-es@centos.org http://lists.centos.org/mailman/listinfo/centos-es
Re: [CentOS-es] Openvpn Centos 4.8
Hola Alexander, podrías dar un poco más de información, si es posible algún log etc. Qué versión has de OpenVpn has instalado ¿? que manual has seguido ¿? etc... saludos!!! 2011/7/25 Alexander Rojas Garcia siste...@tehindu.com Hola, Tengo problemas con la instalación del OpenVPN, quisiera saber cómo lo desinstalo correctamente, actualmente seguí una guía pero cuando cargo el servicio me da error, revise el error en el registro “/var/log/openvpn.log”, pero no entiendo mucho la causa. Espero su ayuda y si algo una buena guía para la instalación. Gracias. Att. Alex ___ CentOS-es mailing list CentOS-es@centos.org http://lists.centos.org/mailman/listinfo/centos-es -- Ricardo ___ IT Architect website: http://www.pulsarinara.com ___ CentOS-es mailing list CentOS-es@centos.org http://lists.centos.org/mailman/listinfo/centos-es
[CentOS-es] Problema con el home de un usuario
Hola a todos. Mi consulta es la siguiente ... El año pasado agregamos un Disco Rígido nuevo al Server del Cluster (/dev/sdb1 montado en /home1). Para probar, cambie la dirección de almacenamiento a un solo usuario y cambie el archivo /etc/passwd. Ejemplo: pepito:x:503:100::/home1/pepito:/bin/bash *y ahora ha vuelto al lugar donde estaba antes.* pepito:x:503:100::/home/pepito:/bin/bash -- El *mensaje de error *que me esta dando cuando se conecta a cualquier nodo del cluster es el siguiente. - Could not chdir to home directory /home1 - No such file o directory *Cada NODO tiene montado el /home en el archivo /etc/fstab, de la siguiente forma. *server:/home /home nfs rw,hard,intr,rsize=8192,wsize= 8192 00 El resto de los otros usuarios no tienen problemas. Lo que yo hice fue reiniciar los servicios de portmap, ypbind, ypserver y nfs. pero no dio resultado. Si alguien me puede decir que esta pasando o me dice donde puedo consultar para poder solucionar este problema. Desde ya muchas gracias. _(@^@)__ Luciano Andres Chiarotto San Luis (Capital). Técnico Universitario en Microprocesadores El saber es la parte principal de la felicidad. Sócrates (470-399 a. C.); filósofo griego. ___ CentOS-es mailing list CentOS-es@centos.org http://lists.centos.org/mailman/listinfo/centos-es
Re: [CentOS] SOLVED: CentOS 6 PXE boot:Unable to download the kickstart file
- Original Message - | Ole Holm Nielsen wrote: | We have CentOS 6 manual installation working by PXE booting from a | RHEL5.6 | PXE/TFTP server. However, when we add a Kickstart file in the PXE | configuration: | | kernel CentOS-6-i386/vmlinuz | append load_ramdisk=1 initrd=CentOS-6-i386/initrd.img network | ks=nfs:130.226.86.4:/u/rpm/kickstart/ks-centos-6-clean-i386.cfg | | then the CentOS 6 client install reports Unable to download the | kickstart file. | The console 3 reports failed to mount nfs source. | | This problem has been resolved. A silly editing error replacing 5-6 | also | changed the IP-address :-( With the correct IP-address Kickstart works | correctly with an NFSv3 server as shown above. No need to upgrade to | NFSv4 | and Kerberos :-) | | For the record, it is in fact possible to add NFS mount options to the | PXE | APPEND line, as documented in | http://fedoraproject.org/wiki/Anaconda_Boot_Options. | To explicitly force an NFSv3 mount you may add the following NFS mount | option: | ks=nfs:nfsvers=3:servername:filename | | Thanks again for everybody's help. | /Ole | ___ | CentOS mailing list | CentOS@centos.org | http://lists.centos.org/mailman/listinfo/centos I would still push for a move to HTTP. I manage about 1500 GNU/Linux, CentOS 5 workstations and about 3 months ago moved away from NFS and to HTTP. This was for additional security, NFSv3 being less secure than NFSv4, as well as for scalability reasons. After making the move from NFS to HTTP I found that my installations went from 20 minutes for a @core installation to ~5 minutes for the same install. I am also now able to do more 'interesting' things like heavy HTTP caching, load balancing as well as other things to tune my installation path. You really should consider it if you've got the resources. ;) -- James A. Peltier IT Services - Research Computing Group Simon Fraser University - Burnaby Campus Phone : 778-782-6573 Fax : 778-782-3045 E-Mail : jpelt...@sfu.ca Website : http://www.sfu.ca/itservices http://blogs.sfu.ca/people/jpeltier ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] centos6 not using /etc/gdm/custom.conf
- Original Message - | In CentOS5 you were able to create a server section in | /etc/gdm/custom.conf such as | | [server-Standard] | name=Standard server | command=/usr/bin/Xorg -br -audit 4 -s 15 | chooser=false | handled=true | flexible=true | priority=0 | | After this change, Xorg would run with the -br -audit 4 -s 15 options. | | Unfortunately in CentOS6 this is not the case. It completely ignores | anything put into custom.conf as far as I can tell. It appears to run | with -nr -verbose -auth -nolisten tcp by default. Is there any way to | modify this? | | Regards, | | Stephen Jamieson much of this functionality has moved into the gconf2 stuff so you use gconf2 to disable things like user visibility and such things -- James A. Peltier IT Services - Research Computing Group Simon Fraser University - Burnaby Campus Phone : 778-782-6573 Fax : 778-782-3045 E-Mail : jpelt...@sfu.ca Website : http://www.sfu.ca/itservices http://blogs.sfu.ca/people/jpeltier ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] cleartpart in kickstart on CentOS 6
Hi List, I use a kickstart file to install my operating systems. In the kickstart file, I put the clearpart options to erase all my partition. But the install failed because the partition aren't erased. Does someone have the same issue ? Regards Kevin C ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] VLAN's
Hi All, Thanks for everyone's feedback. The issues was related to our SIP provider routing private IP's to get the SIP to work (we were not aware of this). We configured VLAN's and put the SIP phones on a different range that the SIP provider did not route. However all your advice and assistance is greatly appreciated. Regards Jennifer Botten ETECH -Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Tom H Sent: 24 July 2011 02:57 PM To: CentOS mailing list Subject: Re: [CentOS] VLAN's On Sat, Jul 23, 2011 at 3:26 PM, John R Pierce pie...@hogranch.com wrote: On 07/23/11 12:09 PM, Tom H wrote: Even after this explanation I don't understand your objection to helping someone with a firewall and routing issue on a CentOS box. You might have a point if the executables didn't come from packages in the canonical CentOS repo. I'm writing my doctoral thesis on pygmy rhino genetic marker traits, I am using LibreOffice on CentOS. Should I put the 1 or 2 pages of abstract before or after my table of contents. :) I was of course assuming that the query was about system administration and not anything remotely similar to what you're suggesting! I get your point that there has to be a limit but I still think that the limit that you're proposing's too restrictive. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cleartpart in kickstart on CentOS 6
From: Kevin C li...@tuxalafenetre.net I use a kickstart file to install my operating systems. In the kickstart file, I put the clearpart options to erase all my partition. But the install failed because the partition aren't erased. Does someone have the same issue ? Which clearpart parameters do you use? Something like that? clearpart --drives=sda --all Personally I use a %pre script to manually wipe+partition+format... JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Keyboards
From: m.r...@5-cent.us m.r...@5-cent.us On my new Dell system, it's got a cardreader. More to the point, it's got an idiot menu key... *right* next to the right control key, and just where the annoying keyboard design has it cut down from the oversize space bar The result is that just trying to type, I regularly hit the thing. Does anyone have an idea how to disable this forever (if y'all don't, I'm prying the key *off*). See maybe showkey, dumpkeys, loadkeys and xmodmap... JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cleartpart in kickstart on CentOS 6
On Mon, 25 Jul 2011 02:18:53 -0700 (PDT), John Doe wrote: Which clearpart parameters do you use? Something like that? clearpart --drives=sda --all I used this on CentOS 5 without any problems : clearpart --all --initlabel I also use an pre script to detect the number of drives on the server %pre # Determine how many drives we have set $(list-harddrives) let numd=$#/2 d1=$1 # This is the device of disk 1 d2=$3 # This is the device of disk 2, etc. S1=$2 # This is the size of disk 1 S2=$4 # This is the size of disk 2, etc. # This would be a partition scheme for two or more drives if [ $numd -ge 2 ]; then cat EOF /tmp/partinfo # Partition clearing information clearpart --drives=$d1,$d2 --all --initlabel part / --asprimary --fstype=ext3 --ondisk=$d1 --size=1024 part /boot --asprimary --fstype=ext3 --ondisk=$d1 --size=200 part swap --fstype=swap --ondisk=$d1 --recommended part /var --fstype=ext3 --ondisk=$d1 --grow --size=1 part /var/spool/squid --fstype=ext3 --ondisk=$d2 --grow --size=1 part /usr --fstype=ext3 --ondisk=$d1 --size=4096 part /tmp --fstype=ext3 --ondisk=$d1 --size=1024 part /home --fstype=ext3 --ondisk=$d1 --size=5120 EOF else cat EOF /tmp/partinfo # Partition clearing information clearpart --drives=$d1 --all --initlabel part / --asprimary --fstype=ext3 --ondisk=$d1 --size=1024 part /boot --asprimary --fstype=ext3 --ondisk=$d1 --size=200 part swap --fstype=swap --ondisk=$d1 --recommended part /var --fstype=ext3 --ondisk=$d1 --size=4096 part /var/spool/squid --fstype=ext3 --ondisk=$d1 --grow --size=1 part /usr --fstype=ext3 --ondisk=$d1 --size=4096 part /tmp --fstype=ext3 --ondisk=$d1 --size=1024 part /home --fstype=ext3 --ondisk=$d1 --size=5120 EOF fi Personally I use a %pre script to manually wipe+partition+format... In Python,Perl or Shell? I'm searching how to wipe all drives with parted or fdisk. Here is my kickstart : # platform=x86, AMD64, ou Intel EM64T # version=CentOS6 # DEBUG : #cmdline # Firewall configuration firewall --disabled # Install OS instead of upgrade install # Root password rootpw --iscrypted S€cr€t # Network information network --device eth0 --bootproto dhcp # System keyboard keyboard fr-latin9 # System language lang en_US.UTF-8 # SELinux configuration selinux --enforcing # Do not configure the X Window System skipx # Installation logging level logging --level=info # Utilisation d'une installation via un serveur NFS nfs --server=172.18.101.24 --dir=Miroir/CentOS/6.0/os/i386 # Reboot after installation reboot # System timezone timezone --isUtc Europe/Paris # System bootloader configuration bootloader --location=mbr # Disk partitioning information clearpart --all --initlabel # Magically figure out how to partition this thing %include /tmp/partinfo %pre # Determine how many drives we have set $(list-harddrives) let numd=$#/2 d1=$1 # This is the device of disk 1 d2=$3 # This is the device of disk 2, etc. S1=$2 # This is the size of disk 1 S2=$4 # This is the size of disk 2, etc. # This would be a partition scheme for two or more drives if [ $numd -ge 2 ]; then cat EOF /tmp/partinfo # Partition clearing information clearpart --drives=$d1,$d2 --all --initlabel part / --asprimary --fstype=ext3 --ondisk=$d1 --size=1024 part /boot --asprimary --fstype=ext3 --ondisk=$d1 --size=200 part swap --fstype=swap --ondisk=$d1 --recommended part /var --fstype=ext3 --ondisk=$d1 --grow --size=1 part /var/spool/squid --fstype=ext3 --ondisk=$d2 --grow --size=1 part /usr --fstype=ext3 --ondisk=$d1 --size=4096 part /tmp --fstype=ext3 --ondisk=$d1 --size=1024 part /home --fstype=ext3 --ondisk=$d1 --size=5120 EOF else cat EOF /tmp/partinfo # Partition clearing information clearpart --drives=$d1 --all --initlabel part / --asprimary --fstype=ext3 --ondisk=$d1 --size=1024 part /boot --asprimary --fstype=ext3 --ondisk=$d1 --size=200 part swap --fstype=swap --ondisk=$d1 --recommended part /var --fstype=ext3 --ondisk=$d1 --size=4096 part /var/spool/squid --fstype=ext3 --ondisk=$d1 --grow --size=1 part /usr --fstype=ext3 --ondisk=$d1 --size=4096 part /tmp --fstype=ext3 --ondisk=$d1 --size=1024 part /home --fstype=ext3 --ondisk=$d1 --size=5120 EOF fi %packages @base @console-internet @core vim-enhanced -firstboot -pcmciautils -at -rfkill yum-presto squid postfix gcc make sgpio dos2unix unix2dos ftp lftp bind-libs yum-plugin-fastestmirror libss ConsoleKit-libs libedit libtar nss_compat_ossl libfprint libnih fipscheck-lib wget %post --log=/root/ks-post.log wget -N http://download.fedoraproject.org/pub/epel/6/i386/epel-release-6-5.noarch.rpm rpm -Uvh epel-release-6-5.noarch.rpm sed -i.bak s/NM_CONTROLLED\=yes/NM_CONTROLLED\=no/ ifcfg-eth* service network restart yum install -y squidGuard yum update -y chkconfig postfix on mount -t nfs 172.18.101.24:/Scripts//mnt cp /mnt/linsecu.pl /root/linsecu.pl umount /mnt JD ___ CentOS mailing list CentOS@centos.org
Re: [CentOS] lots of small files in a folder on Linux centos
On Sunday 24 July 2011 10:13:30 R P Herrold wrote:
#!/bin/sh
#
CANDIDATES=pix1.jpg pix2.jpg pix3.jpg
for i in `echo ${CANDIDATES}`; do
HASH=`echo $i | md5sum - | awk {'print $1'}`
echo $i${HASH}
done
I know it absolutelly has nothing to do with databases or files in folders but
as we are talking about optimizing:
#!/bin/bash
CANDIDATES=(pix1.jpg pix2.jpg pix3.jpg)
for i in ${CANDIDATES[@]}; do
MD5SUM=$(md5sum (echo $i))
echo $i ${MD5SUM% *};
done
It's more than twice as fast than the previous sh script.
[ willing to learn mode, feel free to ignore this]
Anyway, about the the hashes and directories and so on... I assume we'd need a
hash table in our application, right?
Would we proceed as follows (correct me if I'm wrong please)?
1- m5sum the file we need
2- look for the first letter of the hash
3- get into the directory
4- now we look for our file
Is this right? I understand this would improve the searching of files when
there's a lot of them.
Thanks to anyone that replies me and sorry for the offtopic
Regards,
Marc Deop
___
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Re: [CentOS] Keyboards
On Mon, 25 Jul 2011, John Doe wrote: From: m.r...@5-cent.us m.r...@5-cent.us On my new Dell system, it's got a cardreader. More to the point, it's got an idiot menu key... *right* next to the right control key, and just where the annoying keyboard design has it cut down from the oversize space bar The result is that just trying to type, I regularly hit the thing. Does anyone have an idea how to disable this forever (if y'all don't, I'm prying the key *off*). See maybe showkey, dumpkeys, loadkeys and xmodmap... JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos If it is that bad swap out the keyboard they are ten a penny.. Maybe you would enjoy the revenge element of butchering the offending key :-) ... Steve ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] pxe booting questions
hello, I have a situation where I am using PXE and kickstart to install my machines. My set up is as follows: i have a cobbler server which is also an mrepo mirror doing the booting. my mrepo tree has both disc1 and disc2 loop mounted, and RPMS.os symlinks both the discs contens to generate the unified os tree. This all works fine. My issue is with the kickstart, if i use the disc1 as the url (like below) when it tries to install a package that is on disc2, it still looks for it in the disc1 location. Below is a snippet of my kickstart file (which works great if i do not select any packages that reside on the disc2 of the centos install (All discs have been verified as working via sha an md5 checksums). url --url=http://mrepo/mrepo/centos6-x86_64/disc1 repo --name=os --baseurl=http://mrepo/mrepo/centos6-x86_64/RPMS.os selinux --permissive install lang en_US.UTF-8 keyboard us skipx rootpw firewall --disabled authconfig --enableshadow --enablemd5 %packages redhat-lsb rubygems puppet %end Thanks. Nathan ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
-Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Eero Volotinen Sent: Monday, July 25, 2011 1:52 AM To: CentOS mailing list Subject: Re: [CentOS] Upgrading from CentOS 5.6 to 6.0 I'll be moving to Ubunto. They have a 3 year window for support on a distribution unlike CentOS/RHEL. They seem to be more user friendly for a home networking environment. RHEL is supported for 10 years on each major release. Huh?? From: http://mirrors.kernel.org/centos/3/readme.txt CentOS Errata and Security Advisory CESA-2010:0817 End Of Life security update for CentOS 3: https://rhn.redhat.com/errata/RHSA-2010-0817.html As per the upstream vendors errata support policy, updates for CentOS-3 has ended on October 31th 2010. It is recommended that any system still running CentOS 3 should be upgraded to a more recent version of CentOS before this date to ensure continued security and bug fix support. see also http://wiki.centos.org/HowTos/EOLC3 Thank you to everyone who helped make this project possible. Tru ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On Mon, Jul 25, 2011 at 07:33:41AM -0400, Thomas Dukes wrote: Huh?? RHEL/CentOS are supported 7 years from date of release to EOL date. RHEL has an optional extended support plan that you can purchase if you are a RHEL subscriber; CentOS does not offer this extended support as upstream does not make the update source RPMs available for download unless you are a paying customer. John -- Political Correctness is a doctrine, fostered by a delusional, illogical, liberal minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a turd by the clean end. -- Unknown pgpGJF77gp10i.pgp Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cleartpart in kickstart on CentOS 6
From: Kevin C li...@tuxalafenetre.net if [ $numd -ge 2 ]; then cat EOF /tmp/partinfo Did you check the partinfo file to see if the variables are correctly replaced? In Python,Perl or Shell? I'm searching how to wipe all drives with parted or fdisk. In an external shell script. I just do a simple dd (I still use msdos partitioing): dd if=/dev/zero of=$DEVICE bs=512 count=1 /dev/null 21 Then I use sfdisk with values calculated for the correct stripe size depending on the server RAID. Then I format with a stripe-width and optionally -m 0. I only let the ks do the mounting. Disclaimer: did not test with CentOS 6 yet... clearpart --all --initlabel needed since you already put one in your partinfo file? JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cleartpart in kickstart on CentOS 6
On Mon, 25 Jul 2011 05:46:15 -0700 (PDT), John Doe wrote: From: Kevin C li...@tuxalafenetre.net if [ $numd -ge 2 ]; then cat EOF /tmp/partinfo Did you check the partinfo file to see if the variables are correctly replaced? You're right, I have an error is this file, with /dev/sda1 instead of /dev/sda part /var/spool/squid --fstype=ext3 --ondisk=/dev/sda1 --grow --size-1 In Python,Perl or Shell? I'm searching how to wipe all drives with parted or fdisk. In an external shell script. I just do a simple dd (I still use msdos partitioing): dd if=/dev/zero of=$DEVICE bs=512 count=1 /dev/null 21 Then I use sfdisk with values calculated for the correct stripe size depending on the server RAID. Then I format with a stripe-width and optionally -m 0. I only let the ks do the mounting. Disclaimer: did not test with CentOS 6 yet... clearpart --all --initlabel needed since you already put one in your partinfo file? I don't think so. I put it twice only to test. JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Kevin C ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] VLAN's
On Sat, July 23, 2011 15:02, John R Pierce wrote: On 07/23/11 10:22 AM, Kristopher Kane wrote: this sort of thing really belongs on an iproute2/netfilter mail list, however, as its not at all centos specific. So John, exactly what is CentOS specific? Should I only read the emails with release speculation? things related to the packaging, repos. at least stuff thats EL3/4/5/6 related. otherwise, the mission creep on this list turns it into a free for all. hey I'm having problems with my set-top tv box, and it runs linux inside, and centos is linux, can you guys ? From the mailing list page: The CentOS discussion and information list is a general purpose communication list for centos. Note the concept of general purpose places no exceptionally stringent constraints on subject matter. If you feel strongly that your needs are limited to things related to the packaging, repos then might I suggest that the centos-devel list better meets your requirements than this one. -- *** E-Mail is NOT a SECURE channel *** James B. Byrnemailto:byrn...@harte-lyne.ca Harte Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On Sat, July 23, 2011 19:36, R P Herrold wrote: On Sat, 23 Jul 2011, Thomas Dukes wrote: I use to be able to upgrade by doing a 'yum update'. That doesn't work either. CentOS ships no non-RPM packaged packages -- look to whoever put those packages on your box without using the packaging system if you feel the need to blame someone If that person just happens to be oneself then I suggest that you use checkinstall in the future so avoid the pain of dealing with custom installed software outside the rpm/yum package manager -- *** E-Mail is NOT a SECURE channel *** James B. Byrnemailto:byrn...@harte-lyne.ca Harte Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Upgrading from CentOS 5.6 to 6.0
On Sun, 24 Jul 2011, Craig White wrote: you made a vacuous argument. Hunh. You are ** still ** trolling here [arguing against package management] and on this thread [C 6 matters], Craig? I thot back on June 13 you said here: easier just to give up - I moved my new servers to ubuntu - no more new CentOS installs any more -- Russ herrold ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] /dev/dsp
Hey guys, If I needed to get /dev/dsp back on centos 6, how would I go about doing that. Note, I've already uninstalled pulseaudio. I've also edited /etc/modprobe.d/dist-oss.conf and uncommented: /sbin/modprobe --ignore-install snd-pcm /sbin/modprobe snd-pcm-oss /sbin/modprobe snd-seq-device /sbin/modprobe snd-seq-oss But I'm getting: FATAL: Module snd_pcm_oss not found. Suggestions? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On Saturday, July 23, 2011 10:25:56 PM Alexander Dalloz wrote: Am 24.07.2011 02:00, schrieb Thomas Dukes: When I say non-rpm, I mean source packages I compiled such as zoneminder. And even *if* you would be able to upgrade from CentOS 5.x to 6 - technically and by personal skills - what makes you think that your self compiled software would not completely fail, just because libraries change? The specific example of zoneminder is particularly insidious. On our zoneminder systems, even point updates to certain libraries has created problems. A good, modern, package of zoneminder in a repo somewhere would save a lot of grief in that particular case. And even having maintained packages before, I'm not sure I would want to touch rolling my own zoneminder package(s). ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On Sunday, July 24, 2011 10:20:07 PM Thomas Dukes wrote: I'll be moving to Ubunto. Never heard of Ubunto They have a 3 year window for support on a distribution unlike CentOS/RHEL. Right; RHEL has a seven year window, four years longer. They seem to be more user friendly for a home networking environment. No, they're not. Been there, done that. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Upgrading from CentOS 5.6 to 6.0
On Mon, 25 Jul 2011, Lamar Owen wrote: The specific example of zoneminder is particularly insidious. On our zoneminder systems, even point updates to certain libraries has created problems. A good, modern, package of zoneminder in a repo somewhere would save a lot of grief in that particular case. And even having maintained packages before, I'm not sure I would want to touch rolling my own zoneminder package(s). I've a full set for C5 on ZM 1.23 -- the SElinux blissful unawareness of that code is startling, as it is doing 'unsafe' operations all over the place. Running it on a dedicated appliance box and treating it as a vulnerable client to a SELinux enabled network using network sockets, is about the only way to run it safely 1.24 looks 'doable', although perhaps not without some C6 libraries -- I see it in rawhide, and in F, after F13, as I recall -- Russ herrold ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] cleartpart in kickstart on CentOS 6
The list-harddrives results change on CentOS 6. It show all disks and partition. In C5, it only show all drives. On Mon, 25 Jul 2011 15:06:50 +0200, Kevin C wrote: On Mon, 25 Jul 2011 05:46:15 -0700 (PDT), John Doe wrote: From: Kevin C li...@tuxalafenetre.net if [ $numd -ge 2 ]; then cat EOF /tmp/partinfo Did you check the partinfo file to see if the variables are correctly replaced? You're right, I have an error is this file, with /dev/sda1 instead of /dev/sda part /var/spool/squid --fstype=ext3 --ondisk=/dev/sda1 --grow --size-1 In Python,Perl or Shell? I'm searching how to wipe all drives with parted or fdisk. In an external shell script. I just do a simple dd (I still use msdos partitioing): dd if=/dev/zero of=$DEVICE bs=512 count=1 /dev/null 21 Then I use sfdisk with values calculated for the correct stripe size depending on the server RAID. Then I format with a stripe-width and optionally -m 0. I only let the ks do the mounting. Disclaimer: did not test with CentOS 6 yet... clearpart --all --initlabel needed since you already put one in your partinfo file? I don't think so. I put it twice only to test. JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Kevin C ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] lots of small files in a folder on Linux centos
On Sunday, July 24, 2011 05:29:23 AM yonatan pingle wrote: ... lately the server is under-preforming and load averages are high, mysql service keeps crashing and the server is hitting max memory usage ( so i added ram .. ) , after looking into the website folders, i have found one folder which from my point of view is one of the causes for the server loads. ... uploads]# ls | wc -l 3123 ... pros vs cons of having a large amount of small files in the same folder on Linux Centos? 3,123 files is not a large number. From a CentOS 4 file server here. [root@pachyderm sky_data]# ls|wc -l 13526 [root@pachyderm sky_data]# cd ../motse [root@pachyderm motse]# ls |wc -l 28218 [root@pachyderm motse]#cd [root@pachyderm ~]# du -s /var/lib/pgsql 556420596 /var/lib/pgsql [root@pachyderm ~]# (Yeah, 556GB in PostgreSQL) Pachyderm = 'The elephant never forgets' But I'm not looking forward to converting it to a post-C4 PostgreSQL Performance on this box is pretty good, all things considered. Large log files I have found can be performance problems; check to make sure log files are being rolled properly. There are some specific MySQL tuning documents out there; I seem to remember a posting on a local LUG list about some serious MySQL performance issues that took a long time to ferret out, but I can't seem to find it quickly. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] centos 6 and mingetty for /dev/ttyS1
I've been playing with centos 6. Sometimes it gets into a mode when it seems like it hangs at boot. At reboot I hit ALT-D for details and the last thing printed is Starting atd. No I can press alt-f2 to get a login. Doing ps ax does not show a mingetty tty1, What might be going on here. What isn't completing to get a full boot. Thanks, Jerry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On Monday, July 25, 2011 11:22:37 AM R P Herrold wrote: 1.24 looks 'doable', although perhaps not without some C6 libraries -- I see it in rawhide, and in F, after F13, as I recall I managed to get 1.24.x (VM is shut down right now due to VMware update 'things' going on, so can't check specific version) running, but it wasn't pleasant, and required very specific versions of things to get it working on CentOS 5. It does work, but it is touchy if any of its dependencies gets updated. And now there is a newer version than the one I have running. And the SELinux business is still there (or rather, not there) and that complicates things. This seems to be more true with network cameras than with native v4l devices. With the library version in C6 being more close to what ZM wants, it should be easier to make it work with C6. Haven't tried out C6 on our VMware setup yet; it's ESX 3.5U5, and AFAIK EL6 isn't supported on ESX3.5. But I'm still digging into that, and seeing if vSphere 4 vmware-tools from packages.vmware.com will work on ESX3.5. If ZM just wasn't the most useful CCTV webcam software out there, bar none, I'd probably not even bother. I haven't found anything even close to ZM in terms of functionality in the open-source realm. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS-announce Digest, Vol 77, Issue 7
Send CentOS-announce mailing list submissions to centos-annou...@centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-requ...@centos.org You can reach the person managing the list at centos-announce-ow...@centos.org When replying, please edit your Subject line so it is more specific than Re: Contents of CentOS-announce digest... Today's Topics: 1. Release for CentOS-6.0 LiveCD i386 and x86_64 (Karanbir Singh) -- Message: 1 Date: Mon, 25 Jul 2011 14:48:10 +0100 From: Karanbir Singh kbsi...@centos.org Subject: [CentOS-announce] Release for CentOS-6.0 LiveCD i386 and x86_64 To: CentOS Announcements List centos-annou...@centos.org Message-ID: 4e2d741a.2090...@centos.org Content-Type: text/plain; charset=windows-1252 We are pleased to announce the immediate availability of CentOS-6.0 LiveCD for i386 and x86_64 architectures. Detailed Release Notes are available at http://wiki.centos.org/Manuals/ReleaseNotes/CentOSLiveCD6.0 +++ Overview The CentOS-6.0 LiveCD is meant to be a Linux environment suited to be run directly from either CD media or USB storage devices. It does not need any persistent storage on a machine, which also makes it a suitable recovery environment. Due to space constraints, it was not possible to include all the traditional desktop applications on the LiveCD. You can though enjoy a Gnome basic desktop, view and modify pictures with gthumb and the Gimp, browsing the web with Firefox, send emails with Thunderbird and connect to your favorite Instant Messaging network with Pidgin +++ Download SHA256SUMs : CentOS-6.0-x86_64-LiveCD.iso: f7239593e425ea4c26c5292e23b5e284e64779f54af395486cf1fd4b3e6c7f3b CentOS-6.0-i386-LiveCD.iso: c4e09a2152a8e1b17dc6704eb8d7455c13f615e40432cb0b4b07f65850948628 The CentOS-6.0 LiveCD is released to all external mirrors and available for download now. List of mirrors is available at these urls : http://isoredirect.centos.org/centos/6/isos/i386/ http://isoredirect.centos.org/centos/6/isos/x86_64/ There are no torrent files for these LiveCD images since the overall size of download is small enough that it can be easily downloaded via http and ftp mirrors. Given the very large and diverse CentOS Mirror network, we expect most people to get fairly good download rates for these iso images. Once you download the images, its important to verify contents using the sha256sum utility, against the published sums here. +++ Notes You can now install the Live environment to your hard disk (which wasn?t possible with the 5.x Live medias). Please note that you need more that 512Mb of ram to be able to use that ?install to hard drive? feature (If you have less than 512Mb of ram, you can install to disk but in text-mode, meaning that instead of clicking on the desktop icon, you have to launch a gnome-terminal and launch the ?liveinst? command from within the terminal) There is no upstream Live media product. The Live media produced within the CentOS Project is based on and around the livemedia tools from the Fedora Project. These LiveCD?s only contains content found within the primary CentOS-6.0 distribution. No package from outside the distribution was included and no package has been changed from whats included in the base distribution. We appreciate all forms of feedback about these LiveCD, including specific application inclusion requests or feature changes in future releases. The best place to provide this feedback is via the centos-devel mailing list ( http://lists.centos.org/ ) and feature requests via the issue tracker ( http://bugs.centos.org/ ). Special thanks to Fabian Arrotin for taking up the LiveCD and LiveDVD efforts, and to everyone on the QA team who worked through the issues and helped build, test and release these images. -- Karanbir Singh The CentOS Project irc: z00dax, #cen...@irc.freenode.net -- ___ CentOS-announce mailing list centos-annou...@centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 77, Issue 7 ** ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] /dev/dsp
Hey guys, If I needed to get /dev/dsp back on centos 6, how would I go about doing that. Note, I've already uninstalled pulseaudio. I've also edited /etc/modprobe.d/dist-oss.conf and uncommented: /sbin/modprobe --ignore-install snd-pcm /sbin/modprobe snd-pcm-oss /sbin/modprobe snd-seq-device /sbin/modprobe snd-seq-oss But I'm getting: FATAL: Module snd_pcm_oss not found. Suggestions? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Updated Kernel sensors modules
Last week I upgraded my box to CentOS 6 and I'm very impressed so far with it. The only small issue so far is that it doesn't seem to recognize the new Sandy Bridge Core i5 CPU that I have and you can't monitor its temperature. I recompiled the latest coretemp module from the latest 2.6.39 kernel and the latest lm_sensors version however this still wasn't enough as the new module loads fine but still reports that there were no sensors found. I booted a Fedora 15 install and it recognized the CPUs and started reporting the temperatures so obviously the modules are there but maybe the coretemp is not the only thing that is needed. Does anyone know what else is needed for the sensors to be recognized? Thanks, Deyan ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On Sun, Jul 24, 2011 at 10:52 PM, Craig White craigwh...@azapple.com wrote: On Sun, 2011-07-24 at 19:51 -0500, Lanny Marcus wrote: Installing non RPM software on an RPM Distro like CentOS is frowned upon. That is the worst way to do it. why? you made a vacuous argument. @Craig: I retract that. Probably something that is discouraged, rather than frowned upon Lanny ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Centos 6.0 Live CD Now Available
Detailed Release Notes are available at http://wiki.centos.org/Manuals/ReleaseNotes/CentOSLiveCD6.0 Special thanks to Fabian Arrotin for taking up the LiveCD and LiveDVD efforts, and to everyone on the QA team who worked through the issues and helped build, test and release these images. Thank you. Well done Guys. Centos is Great. -- With best regards, Paul. England, EU. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] lots of small files in a folder on Linux centos
On Mon, 25 Jul 2011, Marc Deop wrote: It's more than twice as fast than the previous sh script. In part this is /bin/sh v /bin/bash and using 'bashisms' matter, but yes, I did not seek to optimize a teaching throwaway 1- m5sum the file we need ... actually the NAME of the file, to make it explicit we are not looking at content [also a reasonable approach if one is looking to find and de-duplicate a filestore] 2- look for the first letter of the hash ... actually this may be more than a single letter of the hash --- with ca 3000 files, and 16 hash characters, we should end up with about 200 files per subdirectory. The filesystem should be doing some sort of index as well -- as I recall, a B-tree in the case of extN but I've not expressly looked. The php case was mentioned, however, and its directory searching is less optimal We have a customer with a similar problem with a naiively written set of home brewed PHP code, and are helping them work through similar issues 3- get into the directory 4- now we look for our file ... this is probably a single operation to suck the sub-directory listing into an array in php, and use an associative match but you are right, we are moving increasingly away from a CentOS issue to a more general coding style issue -- Russ herrold ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Updated Kernel sensors modules
On 25/07/11 17:04, Dejan wrote: Last week I upgraded my box to CentOS 6 and I'm very impressed so far with it. The only small issue so far is that it doesn't seem to recognize the new Sandy Bridge Core i5 CPU that I have and you can't monitor its temperature. I recompiled the latest coretemp module from the latest 2.6.39 kernel and the latest lm_sensors version however this still wasn't enough as the new module loads fine but still reports that there were no sensors found. I booted a Fedora 15 install and it recognized the CPUs and started reporting the temperatures so obviously the modules are there but maybe the coretemp is not the only thing that is needed. Does anyone know what else is needed for the sensors to be recognized? Thanks, Deyan See here: http://lists.lm-sensors.org/pipermail/lm-sensors/2011-January/031024.html and the rest of that thread. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On 07/25/2011 06:07 PM, Lanny Marcus wrote: On Sun, Jul 24, 2011 at 10:52 PM, Craig Whitecraigwh...@azapple.com wrote: On Sun, 2011-07-24 at 19:51 -0500, Lanny Marcus wrote: Installing non RPM software on an RPM Distro like CentOS is frowned upon. That is the worst way to do it. why? you made a vacuous argument. @Craig: I retract that. Probably something that is discouraged, rather than frowned upon Lanny In the RHEL environments where I have worked, installing non RPM software was more than frowned upon. It was strictly forbidden and cause for immediate public flogging. If someone could not (or did not want to) understand why installing non RPM software was a bad idea then that person would have been removed from his duties. It's like using imperial units or US customary units (so non-metric) in Satellite design. It's just not an option. And if you insist then you can use it but it will be in your own basement and not at a vendor creating a Satellite. Regards, Patrick ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On 7/25/2011 11:37 AM, Patrick Lists wrote: Installing non RPM software on an RPM Distro like CentOS is frowned upon. That is the worst way to do it. why? you made a vacuous argument. @Craig: I retract that. Probably something that is discouraged, rather than frowned upon Lanny In the RHEL environments where I have worked, installing non RPM software was more than frowned upon. It was strictly forbidden and cause for immediate public flogging. If someone could not (or did not want to) understand why installing non RPM software was a bad idea then that person would have been removed from his duties. In production environments where you treat hardware as disposable commodity chunks it makes sense to demand the extra effort to make the software components reproducible across repeated installs. In other scenarios, it is just extra effort without much purpose unless someone else has already done it. That is, building an RPM is always more work than doing a source install and often imposes inconvenient restraints like only permitting a single version to be running at once, and doesn't give you any guarantee that you won't have to repeat that extra work when the distribution changes. If you aren't planning to repeat that install on other machines, where's the payback for the extra work and constraints? -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Upgrading from CentOS 5.6 to 6.0
On Mon, 25 Jul 2011, Les Mikesell wrote: On 7/25/2011 11:37 AM, Patrick Lists wrote: Installing non RPM software on an RPM Distro like CentOS is frowned upon. That is the worst way to do it. else has already done it. That is, building an RPM is always more work than doing a source install and often imposes inconvenient restraints like only permitting a single version to be running at once, and doesn't give you any guarantee that you won't have to repeat that extra work when the distribution changes. If you aren't planning to repeat that install on other machines, where's the payback for the extra work and constraints? The rant at the start of this thread was about a migration into C6, so of course, your predicate condition: 'you aren't planning to repeat that install' does not apply The disciplne and benefit of identifying and solving dependencies in a packaged system, rather than splatting as root over system libraries upon which other packages depend [also, the same isue using CPAN shell to 'solve' a problem, rather than packaging, as ZM has many such [1]] is obvious, and needs no further advocacy, even for a single install; the 'straw man' about setting different private library paths assumes that the person building such even comprehends that there is an issue in play. Not likely -- Russ herrold [1] [herrold@centos-5 zoneminder]$ ls -1 | grep ^per | wc 37 371354 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] ext4, 4k sector alignment
I've mentioned this problem before but put off doing anything about it and maybe now someone can suggest the best solution. I have a 3-member RAID1 set where one of the members is periodically swapped and rotated offsite. The filesystem contains a backuppc archive which has millions of hardlinks that make it impractical to copy with a file-oriented approach. The current filesystem is ext3 with one partition that uses the entire disk capacity (no lvm). It works as is, but... I'd like to use a laptop size drive for the swapped member and the only ones available that match the size have 4k sectors. I have swappable, trayless SATA bays available for both drive sizes. The problem is that with the current partition layout, the drive with 4k sectors takes more than a day to re-sync even though on read access the speed is a match for the full sized drives that sync in a few hours. My questions for any filesystem experts are: Is there a way to adjust the existing md partitions to get the right alignment for 4k sectors without having to do a file-oriented copy to new partitions? A resize + a dd copy to shift the position might be feasible time-wise if that would work. Is it worth converting to ext4? Is there a difference between doing this on 5.6 or 6.x? If I start over from scratch with 6.x, will the partitioning tools automatically align for 4k sector drives (with/without lvm?)? -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] ext4, 4k sector alignment
On Mon, 25 Jul 2011, Les Mikesell wrote: My questions for any filesystem experts are: Is there a way to adjust the existing md partitions to get the right alignment for 4k sectors without having to do a file-oriented copy to new partitions? A resize + a dd copy to shift the position might be feasible time-wise if that would work. no expert here, but I have the scars across my back from pulling arrows out, as a pioneer We have hit the issue on our storage backend which runs ext4, and on some of our dom0 built before the 4k sector alignment was generally acknowledged and known to be potentially in play We have some non-conformant units, and after seaching, concluded that a 'wipe and rebuild' was the most time efficient process for us -- YMMV Is it worth converting to ext4? ext4 is pleasant in some large filesystem cases, but probably overkill as a blanket option. Certainly it is 'wayy overkill for domU as a general rule, as it makes for a more fragile image in the sense that generic tools are less likely to work without higher version and skill levels when a filesystem gets horked up and a repair expedition has to be mounted ... we had an issue that a 'dirty' filesystem that would not fsck kept showing up in a nightly backup exception report, and ended up manually repairing what should have been able to be repaired automatically Is there a difference between doing this on 5.6 or 6.x? in C5, it took extra effort to use the technology preview; in C6 it is natively available If I start over from scratch with 6.x, will the partitioning tools automatically align for 4k sector drives (with/without lvm?)? no idea if gparted does this by default -- it does not in all versions; certainly fdisk did not -- 4k alignment is on our deployment checklist, and we are manually checking partitioning to make sure, when we are rebuilding boxes -- Russ herrold ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On 7/25/2011 12:05 PM, R P Herrold wrote: else has already done it. That is, building an RPM is always more work than doing a source install and often imposes inconvenient restraints like only permitting a single version to be running at once, and doesn't give you any guarantee that you won't have to repeat that extra work when the distribution changes. If you aren't planning to repeat that install on other machines, where's the payback for the extra work and constraints? The rant at the start of this thread was about a migration into C6, so of course, your predicate condition: 'you aren't planning to repeat that install' does not apply My condition in that case was that you couldn't count on the RPM to work anyway once the distribution changes. So you'll likely be repeating that extra effort anyway. And of course your next install may be on a non-RPM based system, making any rpm-packaging effort moot. The disciplne and benefit of identifying and solving dependencies in a packaged system, rather than splatting as root over system libraries upon which other packages depend [also, the same isue using CPAN shell to 'solve' a problem, rather than packaging, as ZM has many such [1]] is obvious, and needs no further advocacy, even for a single install; the 'straw man' about setting different private library paths assumes that the person building such even comprehends that there is an issue in play. Not likely Now you are talking about very different things. Installing your own stuff in /usr/local (as most source installs would do unless you go out of your way to subvert it) bypasses the issue of overwriting disto-supplied files. You are right, of course, that outdated and missing libraries in the base disto are a complex problem particularly for languages/apps that have their own update/install concepts, no matter how you try to solve it. But a simple 'build an rpm' isn't going to fix those complications. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
Les Mikesell wrote: On 7/25/2011 11:37 AM, Patrick Lists wrote: Installing non RPM software on an RPM Distro like CentOS is frowned upon. That is the worst way to do it. why? snip In the RHEL environments where I have worked, installing non RPM software was more than frowned upon. It was strictly forbidden and cause for immediate public flogging. If someone could not (or did not want to) understand why installing non RPM software was a bad idea then that person would have been removed from his duties. In production environments where you treat hardware as disposable commodity chunks it makes sense to demand the extra effort to make the software components reproducible across repeated installs. In other scenarios, it is just extra effort without much purpose unless someone else has already done it. That is, building an RPM is always more work than doing a source install and often imposes inconvenient restraints like only permitting a single version to be running at once, and doesn't give you any guarantee that you won't have to repeat that extra work when the distribution changes. If you aren't planning to repeat that install on other machines, where's the payback for the extra work and constraints? Another thing: most places I've worked, the large majority of projects will be running in production, eventually. Having specialized packages that you have to build, other than the project itself, means you'll eventually have to do it for the entire time the project's in production, and frequently means that the project itself is fragile, and perhaps poorly implemented, and likely to break. mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS 6 Webmail
I see that SquirrelMail is gone from 6. Is there a package in here somewhere that is a webmail system? Otherwise, I suppose it lives in one of the repos like sourceforge. I just wanted to check if something new existed before doing that. John ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ext4, 4k sector alignment
On Mon, 2011-07-25 at 13:23 -0400, R P Herrold wrote: On Mon, 25 Jul 2011, Les Mikesell wrote: My questions for any filesystem experts are: Is there a way to adjust the existing md partitions to get the right alignment for 4k sectors without having to do a file-oriented copy to new partitions? A resize + a dd copy to shift the position might be feasible time-wise if that would work. no expert here, but I have the scars across my back from pulling arrows out, as a pioneer We have hit the issue on our storage backend which runs ext4, and on some of our dom0 built before the 4k sector alignment was generally acknowledged and known to be potentially in play We have some non-conformant units, and after seaching, concluded that a 'wipe and rebuild' was the most time efficient process for us -- YMMV Is it worth converting to ext4? ext4 is pleasant in some large filesystem cases, but probably overkill as a blanket option. Certainly it is 'wayy overkill for domU as a general rule, as it makes for a more fragile image in the sense that generic tools are less likely to work without higher version and skill levels when a filesystem gets horked up and a repair expedition has to be mounted ... we had an issue that a 'dirty' filesystem that would not fsck kept showing up in a nightly backup exception report, and ended up manually repairing what should have been able to be repaired automatically Is there a difference between doing this on 5.6 or 6.x? in C5, it took extra effort to use the technology preview; in C6 it is natively available If I start over from scratch with 6.x, will the partitioning tools automatically align for 4k sector drives (with/without lvm?)? no idea if gparted does this by default -- it does not in all versions; certainly fdisk did not -- 4k alignment is on our deployment checklist, and we are manually checking partitioning to make sure, when we are rebuilding boxes I can only comment on the last section I have built Centos 6.0 on a SSD using F15 version of gdisk man gdisk shows for the l option Change the sector alignment value. Disks with more logical sectors per physical sectors (such as some Western Digital models introduced in December of 2009) and some RAID configurations can suffer performance problems if partitions are not aligned properly for their internal data structures. On new disks, GPT fdisk attempts to align partitions on 2048-sector (1MiB) boundaries by default, which optimizes performance for both of these disk types. Only straight ext4 parttions (No lvm) I have seen no problems so far ... Number Start (sector)End (sector) Size Code Name 120484095 1024.0 KiB EF02 BIOS boot partition 24096 2101247 1024.0 MiB 0700 Linux/Windows data 3 2101248 6295551 2.0 GiB 8200 Linux swap 4 629555269210111 30.0 GiB0700 Linux/Windows data 569210112 132124671 30.0 GiB0700 Linux/Windows data 6 132124672 174067711 20.0 GiB0700 Linux/Windows data 7 174067712 468862094 140.6 GiB 0700 Linux/Windows data John ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 6 Webmail
On 07/25/2011 06:30 PM, John Hinton wrote: I see that SquirrelMail is gone from 6. Is there a package in here somewhere that is a webmail system? Otherwise, I suppose it lives in one of the repos like sourceforge. I just wanted to check if something new existed before doing that. Upstream has removed SquirrelMail from EL6, but you'll find SquirrelMail and Roundcube Webmail in EPEL [1] [1] http://fedoraproject.org/wiki/EPEL -- Athmane Madjoudj ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ext4, 4k sector alignment
John Austin wrote: On Mon, 2011-07-25 at 13:23 -0400, R P Herrold wrote: On Mon, 25 Jul 2011, Les Mikesell wrote: My questions for any filesystem experts are: Is there a way to adjust the existing md partitions to get the right alignment for 4k sectors without having to do a file-oriented copy to new partitions? A resize + a dd copy to shift the position might be feasible time-wise if that would work. snip We have some non-conformant units, and after seaching, concluded that a 'wipe and rebuild' was the most time efficient process for us -- YMMV Is it worth converting to ext4? ext4 is pleasant in some large filesystem cases, but probably overkill as a blanket option. snip If I start over from scratch with 6.x, will the partitioning tools automatically align for 4k sector drives (with/without lvm?)? no idea if gparted does this by default -- it does not in all versions; certainly fdisk did not -- 4k alignment is on our deployment checklist, and we are manually checking partitioning to make sure, when we are rebuilding boxes snip rant I think it was when I was building a 6.0 box a couple weeks ago, but I'd partition, it would do an mkfs... and *then* tell me it wasn't aligned, and I played with it several times, and it absolutely would NOT align it, nor offer to do so. mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 6 Webmail
It's not in any centos-related repos, but I'd highly recommend horde: http://www.horde.org/ (IMP is the subsystem that is the webmail portion.) Devin ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Package: virt-goodies - partly solved
Am Freitag, 22. Juli 2011, 13:37:08 schrieb Timothy Kesten: Hi Folks, is here someone who knows where to get the package virt-goodies for CentOS6 64bit? I'd like to convert VMWare-images to KVM. No answers :-( I've found the sourcecode of vmware2libvirt (part of virt-goodies - a python-file) to convert .vmx file to .xm file for using in virt-manager. This programm works fine. Conversion of my VMWare-Image succeeded. For everything, which interests it. Bye Timothy ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS 6 Webmail
On Mon, 25 Jul 2011, Devin Reade wrote: To: CentOS mailing list centos@centos.org From: Devin Reade g...@gno.org Subject: Re: [CentOS] CentOS 6 Webmail It's not in any centos-related repos, but I'd highly recommend horde: http://www.horde.org/ (IMP is the subsystem that is the webmail portion.) +1 that's what my hosting provider gives on my webmail service, and I think it's a nice application to use. Keith - Websites: http://www.karsites.net http://www.php-debuggers.net http://www.raised-from-the-dead.org.uk All email addresses are challenge-response protected with TMDA [http://tmda.net] - ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ext4, 4k sector alignment
--On Monday, July 25, 2011 01:56:38 PM -0400 m.r...@5-cent.us wrote:
I think it was when I was building a 6.0 box a couple weeks ago, but I'd
partition, it would do an mkfs... and *then* tell me it wasn't aligned,
and I played with it several times, and it absolutely would NOT align it,
nor offer to do so.
When I was building out a 6.0 box a few days ago using 4k sector
drives, I first booted into rescue mode and partitioned using
fdisk via:
fdisk -uc -H 224 -S 56 /dev/sd{a,b,c,d}
(I'm not sure, but the -H and -S might be irrelevent due to the -uc.)
The first partition then defaulted to starting at sector 2048 (one MB),
size of 200MB. On all disks, one other partition was created holding
the remainder of the disk. All partition types were set to 0xfd.
I then booted the install disk normally and eventually things got
configured so that partion 1 on all drives makes up a 200MB
mirrored /dev/md0 for /boot, and everthing else went into /dev/md1
as RAID6.
As far as I can tell, I've not buggered things up ...
Devin
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Re: [CentOS] ext4, 4k sector alignment
Devin Reade wrote:
--On Monday, July 25, 2011 01:56:38 PM -0400 m.r...@5-cent.us wrote:
I think it was when I was building a 6.0 box a couple weeks ago, but I'd
partition, it would do an mkfs... and *then* tell me it wasn't aligned,
and I played with it several times, and it absolutely would NOT align
it, nor offer to do so.
When I was building out a 6.0 box a few days ago using 4k sector
drives, I first booted into rescue mode and partitioned using
fdisk via:
fdisk -uc -H 224 -S 56 /dev/sd{a,b,c,d}
(I'm not sure, but the -H and -S might be irrelevent due to the -uc.)
snip
No joy - I think I have to use parted - the drive was too big for fdisk.
mark
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Re: [CentOS] ext4, 4k sector alignment
--On Monday, July 25, 2011 02:19:16 PM -0400 m.r...@5-cent.us wrote: No joy - I think I have to use parted - the drive was too big for fdisk. I should have mentioned that this was with 1.5TB disks. I think there's a limit somewhere beyond 2TB for fdisk. Devin ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] what really starts x11
my inittab file has 5 for starting x on centos 6 however x is not starting what do i look for as why x is not starting ? it doesnt even attempt to start that i can tell no screen flashing or anything jerry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] what really starts x11
On Mon, 25 Jul 2011, Jerry Geis wrote: To: CentOS ML centos@centos.org From: Jerry Geis ge...@pagestation.com Subject: [CentOS] what really starts x11 my inittab file has 5 for starting x on centos 6 however x is not starting what do i look for as why x is not starting ? it doesnt even attempt to start that i can tell no screen flashing or anything Hello Jerry. Is X windows actually installed? Can you run startx from a command-line prompt? Keith - Websites: http://www.karsites.net http://www.php-debuggers.net http://www.raised-from-the-dead.org.uk All email addresses are challenge-response protected with TMDA [http://tmda.net] - ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] what really starts x11
lists-centos wrote: switch inittab to 3. that will get you a line-mode login. after logging in, issue the command startx and debug from there. - Richard Original Message Date: Monday, July 25, 2011 02:36:02 PM -0400 From: Jerry Geis ge...@pagestation.com To: CentOS ML centos@centos.org Subject: [CentOS] what really starts x11 my inittab file has 5 for starting x on centos 6 however x is not starting what do i look for as why x is not starting ? it doesnt even attempt to start that i can tell no screen flashing or anything jerry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos End Original Message thanks actually i tried that. it does start. it just doesnt start automatically. i can start it manually jerry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ext4, 4k sector alignment
On Mon, Jul 25, 2011 at 1:10 PM, Les Mikesell lesmikes...@gmail.com wrote: I've mentioned this problem before but put off doing anything about it and maybe now someone can suggest the best solution. I have a 3-member RAID1 set where one of the members is periodically swapped and rotated offsite. The filesystem contains a backuppc archive which has millions of hardlinks that make it impractical to copy with a file-oriented approach. The current filesystem is ext3 with one partition that uses the entire disk capacity (no lvm). It works as is, but... I'd like to use a laptop size drive for the swapped member and the only ones available that match the size have 4k sectors. I have swappable, trayless SATA bays available for both drive sizes. The problem is that with the current partition layout, the drive with 4k sectors takes more than a day to re-sync even though on read access the speed is a match for the full sized drives that sync in a few hours. My questions for any filesystem experts are: Is there a way to adjust the existing md partitions to get the right alignment for 4k sectors without having to do a file-oriented copy to new partitions? A resize + a dd copy to shift the position might be feasible time-wise if that would work. Is it worth converting to ext4? Is there a difference between doing this on 5.6 or 6.x? If I start over from scratch with 6.x, will the partitioning tools automatically align for 4k sector drives (with/without lvm?)? -- Les Mikesell lesmikes...@gmail.com I've wondered many times, though haven't tried it, if the issues with hard links and backuppc could be solved by using a container file with a loopback mount, and then that file could be moved around as needed without running into hard-link issues. In this case, you could format the external drive in the optimal mode for 4k sectors, then create a container file and mount it using loopback. Then add the loopback device to the mdraid and have it sync. -☙ Brian Mathis ❧- ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ext4, 4k sector alignment
On 7/25/2011 1:42 PM, Brian Mathis wrote: I've wondered many times, though haven't tried it, if the issues with hard links and backuppc could be solved by using a container file with a loopback mount, and then that file could be moved around as needed without running into hard-link issues. In this case, you could format the external drive in the optimal mode for 4k sectors, then create a container file and mount it using loopback. Then add the loopback device to the mdraid and have it sync. It doesn't really help with the problem as it stands, which is that the target disk (a swappable sata, not really external) has no extra space that would permit shifting the alignment. It might work to shrink the existing size, then partition the new drives with the right offset, but I may just start from scratch and keep the old drives around in case I need the old history. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] [CentOS 6] what really starts x11
actually i tried that. it does start. it just doesnt start automatically. i can start it manually jerry One centos 6 I found /etc/init/prefdm.conf In it there is exec /etc/X11/prefdm -nodaemon When I run this by hand all it does is log me out - no X windows starting up. This is what is not happening. X is not starting on reboot. /etc/inittab has runlevel 5. Thoughts? Jerry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On 07/25/2011 07:26 PM, Les Mikesell wrote: [snip] My condition in that case was that you couldn't count on the RPM to work anyway once the distribution changes. So you'll likely be repeating that extra effort anyway. Not sure what you mean with once the distribution changes but within a major CentOS/RHEL version (e.g. 5 or 6) there is a stable ABI so an update to the distro should not introduce issues. In my experience apps deployed on RHEL 5.1 work equally on 5.7. If they work crappy, hire better developers :) And of course your next install may be on a non-RPM based system, making any rpm-packaging effort moot. So do people in the Windows world decide to *not* build msi packages because their PHB might decide to replace all Windows with RHEL/CentOS? I have never seen that (the not building msi packages that is). And neither the reverse. I build versioned packages so (amongst other things) I can create a controlled and predictable environment. Are you going to install from source on thousands of servers or do you push *one* tested rpm? I know what I will be doing. Anything else just does not make sense to me. Regards, Patrick ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] [CentOS 6] what really starts x11
Jerry Geis wrote: actually i tried that. it does start. it just doesnt start automatically. i can start it manually jerry One centos 6 I found /etc/init/prefdm.conf In it there is exec /etc/X11/prefdm -nodaemon When I run this by hand all it does is log me out - no X windows starting up. This is what is not happening. X is not starting on reboot. /etc/inittab has runlevel 5. Thoughts? Jerry I finally see in /var/log/messages (which I looked at first) that the error. prefdm is respawning too fast... still stuck... I tried removing all files in the ~ directory in /root and my user. Same result no X windows by default. startx still works. Jerry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On 7/25/2011 3:34 PM, Patrick Lists wrote: My condition in that case was that you couldn't count on the RPM to work anyway once the distribution changes. So you'll likely be repeating that extra effort anyway. Not sure what you mean with once the distribution changes but within a major CentOS/RHEL version (e.g. 5 or 6) there is a stable ABI so an update to the distro should not introduce issues. In my experience apps deployed on RHEL 5.1 work equally on 5.7. If they work crappy, hire better developers :) The context for the issue was someone moving from 5.x to 6.x. And of course your next install may be on a non-RPM based system, making any rpm-packaging effort moot. So do people in the Windows world decide to *not* build msi packages because their PHB might decide to replace all Windows with RHEL/CentOS? But wouldn't it be better if they actually did that instead of locking themselves into a single vendors system? I have never seen that (the not building msi packages that is). And neither the reverse. How do you deal with java apps in cross platform environments? -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] [CentOS 6] what really starts x11
Jerry Geis wrote: Jerry Geis wrote: actually i tried that. it does start. it just doesnt start automatically. i can start it manually jerry One centos 6 I found /etc/init/prefdm.conf In it there is exec /etc/X11/prefdm -nodaemon When I run this by hand all it does is log me out - no X windows starting up. This is what is not happening. X is not starting on reboot. /etc/inittab has runlevel 5. Thoughts? Jerry I finally see in /var/log/messages (which I looked at first) that the error. prefdm is respawning too fast... still stuck... I tried removing all files in the ~ directory in /root and my user. Same result no X windows by default. startx still works. Jerry WOW - after following the scripts prefdm - gdm - somehow gdm was not even installed. Not sure how that can be with a graphical install on kickstart and asking also @general-desktop and @internet-browser in my kickstart file. Anyway when I did yum reinstall gdm it said it wasnt installed. so I did yum install gdm and it installed - I rebooted and X is now running. Again - not sure how gdm did not get installed. Maybe I'll add that to the kickstart file. Jerry ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] [CentOS 6] what really starts x11
On 2011-07-25 22:37, Jerry Geis wrote: prefdm is respawning too fast Most likely Xorg is crashing. You are in runlevel 5, therefor prefdm continues to try and respawn. Check the log in /var/log/Xorg.0.log and then correct what's wrong. Could be dr5iver issue. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ext4, 4k sector alignment
On 7/25/2011 1:42 PM, Brian Mathis wrote: I've wondered many times, though haven't tried it, if the issues with hard links and backuppc could be solved by using a container file with a loopback mount, and then that file could be moved around as needed without running into hard-link issues. In this case, you could format the external drive in the optimal mode for 4k sectors, then create a container file and mount it using loopback. Then add the loopback device to the mdraid and have it sync. It doesn't really help with the problem as it stands, which is that the target disk (a swappable sata, not really external) has no extra space that would permit shifting the alignment. It might work to shrink the existing size, then partition the new drives with the right offset, but I may just start from scratch and keep the old drives around in case I need the old history. -- Les Mikesell lesmikes...@gmail.com I thought this was a 3-disk RAID1? Can't you repartition the hotswap disk and still have the data on the other 2? Why would you need to shrink the existing partition? Just blow it away and resync the data once you rebuild the disk. -☙ Brian Mathis ❧- ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] [CentOS 6] what really starts x11
Jerry Geis wrote: Jerry Geis wrote: Jerry Geis wrote: snip I finally see in /var/log/messages (which I looked at first) that the error. prefdm is respawning too fast... snip WOW - after following the scripts prefdm - gdm - somehow gdm was not even installed. Not sure how that can be with a graphical install on kickstart and asking also @general-desktop and @internet-browser in my kickstart file. Yeah, they changed the group names, as I think I mentioned last week. To *stupid* things, like GNOME Desktop Environment (RPM Fusion Free). Anyway when I did yum reinstall gdm it said it wasnt installed. so I did yum install gdm and it installed - I rebooted and X is now running. snip Two guesses mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ext4, 4k sector alignment
On 7/25/2011 4:05 PM, Brian Mathis wrote: On 7/25/2011 1:42 PM, Brian Mathis wrote: I've wondered many times, though haven't tried it, if the issues with hard links and backuppc could be solved by using a container file with a loopback mount, and then that file could be moved around as needed without running into hard-link issues. In this case, you could format the external drive in the optimal mode for 4k sectors, then create a container file and mount it using loopback. Then add the loopback device to the mdraid and have it sync. It doesn't really help with the problem as it stands, which is that the target disk (a swappable sata, not really external) has no extra space that would permit shifting the alignment. It might work to shrink the existing size, then partition the new drives with the right offset, but I may just start from scratch and keep the old drives around in case I need the old history. I thought this was a 3-disk RAID1? Can't you repartition the hotswap disk and still have the data on the other 2? Why would you need to shrink the existing partition? Just blow it away and resync the data once you rebuild the disk. The disk I want to add is the same size as the existing disks if expressed in 512 byte sectors - and they have one partition taking all of the disk space. If I add a leading offset to get the 4k alignment, there won't be enough room for the existing partition size. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ext4, 4k sector alignment
On 07/25/11 2:17 PM, Les Mikesell wrote: The disk I want to add is the same size as the existing disks if expressed in 512 byte sectors - and they have one partition taking all of the disk space. If I add a leading offset to get the 4k alignment, there won't be enough room for the existing partition size. you sure its that tight?different brand and model 1TB (or whatever) drives vary all over the place in actual size. generally newer ones are a hair bigger than older ones. you need at most 7 sectors to achieve 4 kilobyte alignment. -- john r pierceN 37, W 122 santa cruz ca mid-left coast ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ext4, 4k sector alignment
On 7/25/2011 4:26 PM, John R Pierce wrote: On 07/25/11 2:17 PM, Les Mikesell wrote: The disk I want to add is the same size as the existing disks if expressed in 512 byte sectors - and they have one partition taking all of the disk space. If I add a leading offset to get the 4k alignment, there won't be enough room for the existing partition size. you sure its that tight?different brand and model 1TB (or whatever) drives vary all over the place in actual size. generally newer ones are a hair bigger than older ones. you need at most 7 sectors to achieve 4 kilobyte alignment. The full sized disks are Seagates: Host: scsi7 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: ST3750640NS Rev: 3.AE and fdisk sees this: Disk /dev/sdh: 750.1 GB, 750156374016 bytes 255 heads, 63 sectors/track, 91201 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes The 2.5 ones are WD's: Host: scsi9 Channel: 00 Id: 00 Lun: 00 Vendor: ATA Model: WDC WD7500BPVT-0 Rev: 01.0 Type: Direct-AccessANSI SCSI revision: 05 fdisk: Disk /dev/sdi: 750.1 GB, 750156374016 bytes 255 heads, 63 sectors/track, 91201 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Don't see any extra space there unless you can shift the partition start forwards. There's a very new 1 TB drive that might fit in the swappable bays (a cute little thing that fits 2 in a floppy drive space), but when I got these 750Gb was as large as you could go without adding extra height. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] nfsv4 and kerberos - fails to mount
On Mon, 2011-07-25 at 12:58 -0400, Rob Kampen wrote: Rob Kampen wrote: On 07/19/2011 04:43 PM, Olaf Mueller wrote: Rob Kampen wrote: Hello, nfs4 with kerberos works fine here on CentOS 5.6. change exports to [...]gss/krb([...] [...]gss/krb([...] My /etc/exports says '... gss/krb5(...'. Got this already And 'SECURE_NFS=yes' is set in /etc/sysconfig/nfs. This too is set All needed services are running? - rpcsvcgssd (server) - rpcidmapd (server) - rpcgssd (client) Yes all running A very good instruction, in my opinion, to get it running is http://sadiquepp.blogspot.com/2009/02/how-to-configure-nfsv4-with-kerberos-in.html. This was one of the ones I used - will start from the beginning again. Thanks for comments regards Olaf I have put the nfs4 with Kerberos on hold as it seems there may be a problem with the basic kerberos install. Probably an issue with your keytab. the link above cotains some hints: 1) you need to add an nfs (not host!) principal and 2) use ktadd -e des-cbc-crc:normal Add only the des-cbc-crc:normal key, not one of the others as (at least in the past, I have not checked later kernels like the one in centos 6) to see if this is still applies. In order to allow the des key to work you need the following in /etc/krb5.conf (in the libdefaults section): allow_weak_crypto = true With these settings nfs mounting works for me, but see my comments below first, before you try to mount a nfs file system /usr/kerberos/sbin/kprop: Decrypt integrity check failed while getting initial ticket With the keytab you showed, first try a kinit for a user. does that succeed? What does a klist show after this? This way you can check the ticket generation. Only when that succeeds try the nfs mount Louis ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On 07/25/2011 10:49 PM, Les Mikesell wrote: The context for the issue was someone moving from 5.x to 6.x. Still normal procedures apply: port to the new platform and/or rebuild for the new platform, test on the new platform, rinse repeat, verify, give seal of approval, package and finally deploy the RPM(s). So do people in the Windows world decide to *not* build msi packages because their PHB might decide to replace all Windows with RHEL/CentOS? But wouldn't it be better if they actually did that instead of locking themselves into a single vendors system? Really? No. I wish you good luck with the DLL hell caused by your non-versioned, non-packaged, non-controllable, non-manageable source install on a few thousand servers. You don't get freedom or not-being-locked-in from not using best practices like versioned packaging. The choice for a certain platform was made. Deal with it. I have never seen that (the not building msi packages that is). And neither the reverse. How do you deal with java apps in cross platform environments? RHEL5 life cycle ends on 31/03/2017 so for now I don't. Regards, Patrick ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ext4, 4k sector alignment
On 07/25/11 2:44 PM, Les Mikesell wrote: 255 heads, 63 sectors/track, 91201 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes where is your existing partition starting? if its on a track or cylinder boundary... then sure, you can move it forward by using something that will let you partition by sectors. -- john r pierceN 37, W 122 santa cruz ca mid-left coast ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ext4, 4k sector alignment
On 7/25/2011 5:33 PM, John R Pierce wrote: On 07/25/11 2:44 PM, Les Mikesell wrote: 255 heads, 63 sectors/track, 91201 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes where is your existing partition starting? if its on a track or cylinder boundary... then sure, you can move it forward by using something that will let you partition by sectors. Device Boot Start End Blocks Id System /dev/sdh1 1 91201 732572001 fd Linux raid autodetect It doesn't need to boot. And the 3rd member doesn't need to autodetect, although I do want to be able to mount it independently if needed. Should it work to use the raw disk instead of a partition? -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] CentOS6 on EC2
Anyone successfully got CentOS6 running on EC2. We have bundled a pvgrub image but get to Initialising Xen virtual ethernet driver. and the system stops outputting? -- Thanks, Richard Shade Integration Engineer RightScale - http://www.rightscale.com/ phone: 8055004164x1018 ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ext4, 4k sector alignment
On 07/25/11 3:54 PM, Les Mikesell wrote: Device Boot Start End Blocks Id System /dev/sdh1 1 91201 732572001 fd Linux raid autodetect It doesn't need to boot. And the 3rd member doesn't need to autodetect, although I do want to be able to mount it independently if needed. Should it work to use the raw disk instead of a partition? thats by cylinder, which is an old MSDOS legacy thing. I believe parted and probably some other programs let you partition by sector instead. you previously wrote... On 07/25/11 2:44 PM, Les Mikesell wrote: 255 heads, 63 sectors/track, 91201 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes so, a 'cylinder' is 8225 kbytes per that. simply cutting that down by a few kbytes will get you on your 4K boundary. right now a cylinder is 255*63 = 16065 sectors. which is most certainly not divisible by 8 (8 512 byte sectors is 4K bytes) -- john r pierceN 37, W 122 santa cruz ca mid-left coast ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Sudo #includedir function ignored CentOS 6
I am unable to get the #includedir function to work with sudo. This works just fine on all my CentOS 5.6 servers, but on 6 it is being ignored. I have this line in the file /etc/sudoers.d/zabbix-puppet zabbix ALL=NOPASSWD: /var/lib/zabbix/bin/start_puppet However sudo still requires a password. If I put that same line into /etc/sudoers file , there is no password prompt. At the end of my sudoers file I have this line #includedir /etc/sudoers.d It seems that line is being ignored. The permissions on the file in that directory are 0440. Any ideas would be greatly appreciated. Thanks - Trey ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Sudo #includedir function ignored CentOS 6
Correction, seems to be broken in 5.6 as well...I also had this interesting argument with sudo... # visudo -c -f /etc/sudoers.d/zabbix-puppet /etc/sudoers.d/zabbix-puppet: syntax error near line 0 parse error in /etc/sudoers.d/zabbix-puppet near line 0 (((NOTE: I made absolutely no changes , just did :q))) # visudo -f /etc/sudoers.d/zabbix-puppet /etc/sudoers.d/zabbix-puppet: syntax error near line 0 # visudo -c -f /etc/sudoers.d/zabbix-puppet /etc/sudoers.d/zabbix-puppet: parsed OK :-/ - Trey On Mon, Jul 25, 2011 at 6:41 PM, Trey Dockendorf treyd...@gmail.com wrote: I am unable to get the #includedir function to work with sudo. This works just fine on all my CentOS 5.6 servers, but on 6 it is being ignored. I have this line in the file /etc/sudoers.d/zabbix-puppet zabbix ALL=NOPASSWD: /var/lib/zabbix/bin/start_puppet However sudo still requires a password. If I put that same line into /etc/sudoers file , there is no password prompt. At the end of my sudoers file I have this line #includedir /etc/sudoers.d It seems that line is being ignored. The permissions on the file in that directory are 0440. Any ideas would be greatly appreciated. Thanks - Trey ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Sudo #includedir function ignored CentOS 6
On Mon, Jul 25, 2011 at 7:41 PM, Trey Dockendorf treyd...@gmail.com wrote: I am unable to get the #includedir function to work with sudo. This works just fine on all my CentOS 5.6 servers, but on 6 it is being ignored. I have this line in the file /etc/sudoers.d/zabbix-puppet zabbix ALL=NOPASSWD: /var/lib/zabbix/bin/start_puppet However sudo still requires a password. If I put that same line into /etc/sudoers file , there is no password prompt. At the end of my sudoers file I have this line #includedir /etc/sudoers.d It seems that line is being ignored. The permissions on the file in that directory are 0440. Have you tried zabbix ALL = NOPASSWD: /var/lib/zabbix/bin/start_puppet (spaces before and after =)? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Sudo #includedir function ignored CentOS 6
On 07/25/11 4:41 PM, Trey Dockendorf wrote: I am unable to get the #includedir function to work with sudo. This works just fine on all my CentOS 5.6 servers, but on 6 it is being ignored. I have this line in the file /etc/sudoers.d/zabbix-puppet zabbix ALL=NOPASSWD: /var/lib/zabbix/bin/start_puppet However sudo still requires a password. If I put that same line into /etc/sudoers file , there is no password prompt. At the end of my sudoers file I have this line #includedir /etc/sudoers.d did you edit these files with visudo -f /path/to/file ? I'd try that. -- john r pierceN 37, W 122 santa cruz ca mid-left coast ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] tabs in emacs fundamental mode?
I'm noticing that under CentOS 6, emacs fundamental mode is no longer inserting tabs at factor-of-8 tabstops, but rather is doing some funky guess-the-intended-tab-distance thing like text mode has done for a while, currently using three spaces per tab key. Has anyone tracked down where this was changed and, more to the point, how to get the old CentOS 5 behavior back? FWIW, I'm invoking it as emacs -nw filename. LANG is C. Devin -- He is one of those people who would be enormously improved by death.- H. H. Munro ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
Am 24.07.2011 14:04, schrieb Always Learning: The challenge is how to do an easily transition from one major version to its successor version with the least physical, emotional, intellectual and time-consuming effort. Paul, as much as I understand your point of view, I must disagree taking upstream's and CentOS's position. Your description reflects a home user or an administrator with just less than a handful of systems. CentOS and RHEL aims for the enterprise use. Of course that does not imply people can not rely on this stable platform in very small environments, but that's not the focus of the OS design. And speaking about the enterprise scenario, no serious administrator will risk the proper function of his install base by going risky paths. Typically the OS is just the base for the middleware and application level. Switching to a new major level of OS with lots of important changes means, the administrator will have to test and adjust his setup of OS and application use in multiple aspects. This even applies to applications the base OS ships with. In enterprise environments, where the CentOS systems are more than a simple shell box or a trivial webserver, it is more time consuming to find all the possible places to adjust the obsolete configurations being transferred by an upgrade and to find the tripping points than to run a clean and fresh installation with a defined state. In less trivial setups the applications even get wrecked because of library changes and such. I am a sysadmin for an enterprise running both RHEL and AIX...both of them being enterprise level OSes. IBM has managed to support in place upgrading of their OSes from one major version to another for several versions, now...in fact, each release is, according to IBM, a separate release, with technical levels or maintenance levels and service packs being in-level patches. So, going from 5.3 TL6 SP6 to 5.3 TL12 is as considered patching and is as simple as running smitty update_all from within an appropriately configured repository directory (or directories), much like running yum update. On the other hand, going from 5.1 anything to 5.2 anything, 5.2 to 5.3, 5.3 to 6.1 is considered a major release...and upgrading those, in place, is fully supported by IBM, and is as simple as either booting from an appropriate boot disk, or using the appropriately configured NIM boot and install/up process. If IBM can make this happen for their OS, and Red Hat certainly supports such a process in the Fedora line of releases (including the ability to list additional repositories for remote installation as part of the process), they could certainly make it a supportable option for the RHEL line. -- Mike Burger http://www.bubbanfriends.org Visit the Dog Pound II BBS telnet://dogpound2.citadel.org or http://dogpound2.citadel.org To be notified of updates to the web site, visit: https://www.bubbanfriends.org/mailman/listinfo/site-update or send a blank email message to: site-update-subscr...@bubbanfriends.org ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Upgrading from CentOS 5.6 to 6.0
On Tue, 26 Jul 2011, Mike Burger wrote: If IBM can make this happen for their OS, and Red Hat certainly supports such a process in the Fedora line of releases (including the ability to list additional repositories for remote installation as part of the process), they could certainly make it a supportable option for the RHEL line. The upstream supports nothing as to Fedora, and indeed, members of that project regularly (and seem to gleefully) break forward compatability But you are missing the point -- WHY spend the engineering effort on trying to support such Major 'upgradeany's? A new deployment takes mere minutes for a commercial shop, and by NOT supporting such explicitly, the upstream avoids much support and engineering load. [I say this having done an 'upgradeany' and run into a later 'nss' in C5 than the C6 initial media provides, that required some head scratching, and a nasty workaround, to solve over the weekend] -- Russ herrold ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On Mon, 2011-07-25 at 10:05 -0400, R P Herrold wrote: On Sun, 24 Jul 2011, Craig White wrote: you made a vacuous argument. Hunh. You are ** still ** trolling here [arguing against package management] and on this thread [C 6 matters], Craig? I thot back on June 13 you said here: easier just to give up - I moved my new servers to ubuntu - no more new CentOS installs any more still running some CentOS 5 servers... what's your point? Craig -- This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On Tue, 26 Jul 2011, Mike Burger wrote: If IBM can make this happen for their OS, and Red Hat certainly supports such a process in the Fedora line of releases (including the ability to list additional repositories for remote installation as part of the process), they could certainly make it a supportable option for the RHEL line. The upstream supports nothing as to Fedora, and indeed, members of that project regularly (and seem to gleefully) break forward compatability I can not believe that the upstream does not guide/provide direction with regard to the Fedora project, given that the Fedora project is still the test bed for what eventually goes into the upstream's commercially supported product. But you are missing the point -- WHY spend the engineering effort on trying to support such Major 'upgradeany's? A new deployment takes mere minutes for a commercial shop, and by NOT supporting such explicitly, the upstream avoids much support and engineering load. Quite simply, because the customer base, which is paying the upstream for support, is requesting that such a process be supported. Quite simply, as well, because the upstream is selling the customer on the idea that their product is an enterprise level product. Other enterprise level *NIX providers support this process...the customer may reasonably expect that this provider do the same. Sure...it may take only a few minutes for a commercial shop to deploy an OS, it takes that shop much more time to have to reinstall and reconfigure the applications that run on those OS instances, test, cut over, etc. Additionally, not every shop is running their entire Linux infrastructure in a VM based environment. For those running physical systems, the hardware may still be within their viable hardware lifecycle, but be in need of a newer version of the OS. Should the customer have to purchase an additional physical system for each instance of their OS that must be upgraded from one major release to the next? Where would that leave the customer, as far as having been sold on the cost effectiveness of their Linux installs vs other commercial *NIX offerings? How about those virtualized environments? Spinning up a new VM environment to eventually replace the existing VM with a new OS instance may also require the purchase of additional hardware, in an effort to support the temporary resources needed to spin up, configure and test the new instances prior to putting them into live use. The cost of testing and then supporting live upgrade scenarios, born by the upstream, would likely be less than the cost to the customer base in potential hardware and manpower cycles, and would undoubtedly build the upstream more good will from the customer base. Consider, again, that the feature to perform an upgrade (and not via a hidden upgradeany command line option) is available in the version of Anaconda (the installation tool used by the upstream) that is in use for Fedora intallations and upgrades, and that particular compilation of Anaconda does include the ability to specify those third party repositories from which one may have installed packages. It may be compiled out of the binary that is in use by the upstream, but any of us who have also used their test environment know that it's there, and are more than aware that the upstream has and continues to disable certain features of various included tools when shipping those tools in their commercially supported distribution. -- Mike Burger http://www.bubbanfriends.org Visit the Dog Pound II BBS telnet://dogpound2.citadel.org or http://dogpound2.citadel.org To be notified of updates to the web site, visit: https://www.bubbanfriends.org/mailman/listinfo/site-update or send a blank email message to: site-update-subscr...@bubbanfriends.org ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On Tue, Jul 26, 2011 at 01:07:36AM -0400, Mike Burger wrote: On Tue, 26 Jul 2011, Mike Burger wrote: But you are missing the point -- WHY spend the engineering effort on trying to support such Major 'upgradeany's? A new deployment takes mere minutes for a commercial shop, and by NOT supporting such explicitly, the upstream avoids much support and engineering load. Quite simply, because the customer base, which is paying the upstream for support, is requesting that such a process be supported. If there's sufficient customer demand _and_ if RH decide it's worth it then they might support it. However I can tell you that the 20,000+ RH machines at my place will not be major-version upgraded in-place; they'll be rebuilt (possibly onto new hardware; maybe onto a split-mirror). That's how we do Linux; that's how we do Solaris; heck, that's even how we do AIX. Our support dollars are pushing RedHat in a different direction. We don't care about in-place major-version upgrades. -- rgds Stephen ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] ext4, 4k sector alignment
On 07/25/2011 10:10 AM, Les Mikesell wrote: I've mentioned this problem before but put off doing anything about it and maybe now someone can suggest the best solution. I have a 3-member RAID1 set where one of the members is periodically swapped and rotated offsite. The filesystem contains a backuppc archive which has millions of hardlinks that make it impractical to copy with a file-oriented approach. The current filesystem is ext3 with one partition that uses the entire disk capacity (no lvm). It works as is, but... I'd like to use a laptop size drive for the swapped member and the only ones available that match the size have 4k sectors. I have swappable, trayless SATA bays available for both drive sizes. The problem is that with the current partition layout, the drive with 4k sectors takes more than a day to re-sync even though on read access the speed is a match for the full sized drives that sync in a few hours. My questions for any filesystem experts are: Is there a way to adjust the existing md partitions to get the right alignment for 4k sectors without having to do a file-oriented copy to new partitions? A resize + a dd copy to shift the position might be feasible time-wise if that would work. Is it worth converting to ext4? Is there a difference between doing this on 5.6 or 6.x? If I start over from scratch with 6.x, will the partitioning tools automatically align for 4k sector drives (with/without lvm?)? For LVM's see the --dataalignment and --dataalignmentoffset options. For md devices, my understanding is that the raid superblock is at the end of the partition, so the data is aligned with wherever the partition starts. I verified this using: hexdump /dev/md1 | head -6 hexdump /dev/sda4 | head -6 Nataraj ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On 07/26/2011 01:32 PM, R P Herrold wrote: On Tue, 26 Jul 2011, Mike Burger wrote: If IBM can make this happen for their OS, and Red Hat certainly supports such a process in the Fedora line of releases (including the ability to list additional repositories for remote installation as part of the process), they could certainly make it a supportable option for the RHEL line. The upstream supports nothing as to Fedora, and indeed, members of that project regularly (and seem to gleefully) break forward compatability But you are missing the point -- WHY spend the engineering effort on trying to support such Major 'upgradeany's? A new deployment takes mere minutes for a commercial shop, and by NOT supporting such explicitly, the upstream avoids much support and engineering load. [I say this having done an 'upgradeany' and run into a later 'nss' in C5 than the C6 initial media provides, that required some head scratching, and a nasty workaround, to solve over the weekend] RPH is definitely right about gleefully breaking forward compatibility. It is easier to control compatibility backward and forward when you're deploying a closed (or at least tightly controlled) system as opposed to one that boils with change the way the Fedora upstream does. Example: systemd Find a way to make a transition from 6x to 7.0 seamless by way of a simple yum update once SysV init goes away and all system services must grow configuration files and drop init scripts. That's just one subsystem, there are other huge changes as well (Gnome3...). IBM and the tightly controlled (and decades long) OS/360 - z/OS process or their linear passes through AIX Ver.n - Ver.n+i do not compare to Red Hat's situation. Anyway, compatibility is often complex enough for IBM to address by quietly including emulators for their previous systems instead of shooting for base compatibility. The key to Red Hat's success has been its hands-off approach to the Fedora Project. If Red Hat ever desires to implement something they must first present working implementations for acceptance by FESCo -- which implies promising, working implementations. This forces a lot of unique situations, but the primary effects are: * Advances occur at a rate difficult to compare to other projects * Entire subsystems can be marked obsolete if a working implementation demonstrates superior function (systemd ousting the venerated SysV init is an example of this nothing sacred attitude) * Technical debate about anything/everything crosses company, private and personal lines in ways difficult to interpret from a traditional development perspective * The chaos level is high (marked by the inability for any one person to be an expert on everything at a given time -- by the time one thing is thoroughly understood something else has changed) * Absolute forward and backward compatibility requires too much effort, so the concept of compatibility moves up two levels to the data layer[1] IBM, on the other hand, has a long-term compatibility program they consider to be at the core of their business model (System/360 history is interesting here). They plan their changes around a few subsystems they consider to be sacred. If you want to change something sacred you have to plan it out through the high priest in charge of that subsystem -- and it is acceptable for major system changes to take several years. The whole thought process is entirely different -- as are their target markets. Red Hat is a good value for large- to huge-sized businesses, and IBM is a better value (sometimes with a mix of Red Hat in some areas/departments) for titanic- to ZOMG-sized businesses. I apologize for the long message. I didn't have time to write a short one. -Iwao [1] I've been thinking about this a bit and I've come to think that there are roughly three layers to compatibility -- so I'll define them here since I referenced my own definition: 1- Absolute forward and backward compatibility. Code builds and runs in exactly the same way on any system in the series. This is the level IBM shoots for. System upgrades and downgrades are clean, reliable and easy to recommend and support. In Linux terms this would mean you could load, say, RHEL 3 and yum upgrade to RHEL 6.1 -- whether that is through a yum-initiated upgrade chain or a one-step upgrade is of no concern to the user. 2- Configuration compatibility. Implementations change in radical ways, but the interpretation, format and semantics of configuration files is absolutely respected between versions and often between competing implementations of a single standard. OpenLDAP's move to cn=config while retaining the ability for slapd.conf to be read and converted to a cn=config loadable set of LDIFs is an example of this. This is roughly what Microsoft used to aim for (somewhere on the road between XP and 8 they seem to have totally quit the idea, though). In Linux terms this would
Re: [CentOS] Upgrading from CentOS 5.6 to 6.0
On 07/26/2011 02:07 PM, Mike Burger wrote: But you are missing the point -- WHY spend the engineering effort on trying to support such Major 'upgradeany's? A new deployment takes mere minutes for a commercial shop, and by NOT supporting such explicitly, the upstream avoids much support and engineering load. Quite simply, because the customer base, which is paying the upstream for support, is requesting that such a process be supported. And this would be a sensible argument, were it not being made on the CentOS list. Folks here aren't paying anyone anything. This is more like an extension of the Fedora community, in a way -- free testers and freeloaders. Big deal. Red Hat doesn't *need* to do anything for us, come to think of it they're already doing quite a bit, so I see no point in complaining. -Iwao ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
