Re: [CentOS] good shell script examples?
I wrote a simple one a few years back: > http://www.happyhacker.org/gtmhh/basha.shtml This is great! Thanks for sharing. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] upgrading Centos-Xen when version 6 comes along
2010/11/16 Dave Stevens : > I am curious what is the best way to upgrade my dom0 and domUs to V.6 > (currently 5) when it releases. Any experience or docs on this? Hi, take a look at here: http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization/chap-Virtualization-v2v-migration.html and http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization/convert-a-local-xen-guest.html Best regards, Morten ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] upgrading Centos-Xen when version 6 comes along
On 11/15/2010 07:36 PM, Dave Stevens wrote: > I am curious what is the best way to upgrade my dom0 and domUs to V.6 > (currently 5) when it releases. Any experience or docs on this? > > Dave I know that there is discussion on getting dom0 support into Fedora 15, with maybe 50/50 chance that it will happen. I suspect that will be the focus for the near future. Xen dom0 support is going into the mainline 2.6.37 kernel, but there are still patches that are needed. Once the bugs have been ironed out, I suspect that CentOS support will follow soon after. There will be experimental kernels before then, but I would not recommend them outside of test environments. In short, stick to CentOS 5 in production for the foreseeable future. -- Digimer E-Mail: digi...@alteeve.com AN!Whitepapers: http://alteeve.com Node Assassin: http://nodeassassin.org ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] upgrading Centos-Xen when version 6 comes along
Quoting Karanbir Singh : > On 11/16/2010 12:36 AM, Dave Stevens wrote: >> I am curious what is the best way to upgrade my dom0 and domUs to V.6 >> (currently 5) when it releases. Any experience or docs on this? > > the Base CentOS-6 will have no Xen dom0 support, so you will almost > certainly want to stick with centos-5 on the dom0, for the DomU's you > can rebuild / upgrade using the regular process. > > While centos-6 goes through beta and qa, its customary to make notes > about potential upgrade paths. So keep a lookout for those closer to > release time. > > - KB OK, thanks very much. Dave > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > -- "It is no measure of health to be well adjusted to a profoundly sick society." Krishnamurti ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] upgrading Centos-Xen when version 6 comes along
On 11/16/2010 12:36 AM, Dave Stevens wrote: > I am curious what is the best way to upgrade my dom0 and domUs to V.6 > (currently 5) when it releases. Any experience or docs on this? the Base CentOS-6 will have no Xen dom0 support, so you will almost certainly want to stick with centos-5 on the dom0, for the DomU's you can rebuild / upgrade using the regular process. While centos-6 goes through beta and qa, its customary to make notes about potential upgrade paths. So keep a lookout for those closer to release time. - KB ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] upgrading Centos-Xen when version 6 comes along
I am curious what is the best way to upgrade my dom0 and domUs to V.6 (currently 5) when it releases. Any experience or docs on this? Dave -- "It is no measure of health to be well adjusted to a profoundly sick society." Krishnamurti ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Best way to configure proprietary NVidia driver on CentOS ?
Akemi Yagi wrote: > On Mon, Nov 15, 2010 at 1:35 PM, wrote: >> John Hodrien wrote: > >>> I'd previously had an identical experience to yours with kmod-nvidia, >>> but when I recently tried it all worked without a hitch. dkms-nvidia from >>> rpmforge is just too far out of date now really. >> >> Unless, of course, you have an old card that's not supported in the >> newer drivers. >> >> mark, using the 173 nVidia proprietary driver for twinview > > ELRepo provides, in addition to the latest, two older versions, 96xx and > 173xx: > > http://elrepo.org/tiki/kmod-nvidia-96xx > http://elrepo.org/tiki/kmod-nvidia-173xx > http://elrepo.org/tiki/kmod-nvidia ( <= latest ) > > They are all up to date. :-) *sigh* I guess, when I'm not this busy, I'll try what I told my manager I'd try, which is to use el Repo... mark ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] good shell script examples?
> Does anyone have any suggestions on where to look? (I'm relatively > new to bash) http://www.google.com/search?q=bash+tutorial has quite a few. I wrote a simple one a few years back: http://www.happyhacker.org/gtmhh/basha.shtml -- Spiro Harvey Knossos Networks Ltd (04) 460-2531 : (021) 295-1923 www.knossos.net.nz signature.asc Description: PGP signature ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Best way to configure proprietary NVidia driver on CentOS ?
On Mon, Nov 15, 2010 at 1:35 PM, wrote: > John Hodrien wrote: >> I'd previously had an identical experience to yours with kmod-nvidia, but >> when I recently tried it all worked without a hitch. dkms-nvidia from > rpmforge >> is just too far out of date now really. > > Unless, of course, you have an old card that's not supported in the newer > drivers. > > mark, using the 173 nVidia proprietary driver for twinview ELRepo provides, in addition to the latest, two older versions, 96xx and 173xx: http://elrepo.org/tiki/kmod-nvidia-96xx http://elrepo.org/tiki/kmod-nvidia-173xx http://elrepo.org/tiki/kmod-nvidia ( <= latest ) They are all up to date. :-) Akemi ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Best way to configure proprietary NVidia driver on CentOS ?
John Hodrien wrote: > On Mon, 15 Nov 2010, John Doe wrote: > >> I use dkms-nvidia-x11-drv and it works fine between kernel updates... >> While I know kmod is said to be better, last time I tried it, I failed to make >> it work. Maybe I will retry kmod later... > > I'd previously had an identical experience to yours with kmod-nvidia, but > when I recently tried it all worked without a hitch. dkms-nvidia from rpmforge > is just too far out of date now really. Unless, of course, you have an old card that's not supported in the newer drivers. mark, using the 173 nVidia proprietary driver for twinview ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] hwclock problem
Jobst Schmalenbach wrote, On 11/11/2010 07:41 PM: > Hi. > > I run peridocally (from cron) on all of my machines > > 30 * * * * root /sbin/hwclock --systohc > Why? AFAIK a kernel that is running ntpd and ntpd thinks has reasonably synced to the NTP server will, every _eleven_ minutes write the system time to the hardware clock, and you can't stop it without modifying the kernel or ntpd. > All of those machines in question take their time via NTP > from the same local server, and that server gets its time > from a ntp pool. > reasonable NTP setup. > Now I had to reboot a couple of them two days ago and to my surprise > all had problems with the time upon booting. > > Here are the important files: > > [r...@xx ~] #>l /etc/adjtime > 0.001687 1289518202 0.00 > 1289518202 > LOCAL > > [r...@xxx ~] #>l /etc/sysconfig/clock > ZONE="Australia/Melbourne" > UTC=false > ARC=false > > So from my understanding the hwclock should contain the local time. > > [r...@xx ~] #>date > Fri Nov 12 11:26:23 EST 2010 > [r...@xx ~] #>hwclock > Fri 12 Nov 2010 11:26:42 EST -0.167976 seconds > [r...@xx ~] #> > Is 'EST' the time zone abbreviation you expect for Melbourne? As I am based in the US, I expect 'EST' to be "Eastern Standard Time" for New York/New York, so I ask for your help in understanding. We might be able to see a different pattern if we take the TZ out of the equations. date -u ; hwclock --show --utc; date -u date ; hwclock --show ; date > However on boot I get the following: > > Nov 10 19:08:37 XX syslogd 1.4.1: restart. > Nov 10 19:08:37 XX kernel: klogd 1.4.1, log source = /proc/kmsg started. > Nov 10 19:08:37 XX kernel: Linux version 2.6.18-164.11.1.el5 > (mockbu...@builder10.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4. > 1.2-46)) #1 SMP Wed Jan 20 07:32:21 EST 2010 > Nov 10 19:08:37 XX kernel: Command line: ro root=/dev/sda2 vga=791 > Nov 10 19:08:37 XX kernel: BIOS-provided physical RAM map: > ... > ... > Nov 10 19:08:51 XX kernel: IPv6 over IPv4 tunneling driver > Nov 10 08:08:52 XX ntpdate[2464]: step time server 192.168.1.1 offset > -39599.950905 sec > Nov 10 08:08:52 XX xinetd[2447]: xinetd Version 2.3.14 started with > libwrap loadavg labeled-networking options compiled in. > > and off course dovecot falls over too "Time just moved backwards by 39599 > seconds." > > Now, 39600s is 11 hours, which is (inc DST) *MY* offset from Greenwich. > > > So what am I doing wrong? Running a Linux _Server_ as if it had to dual boot with windows. i.e. the hardware clock should be kept in UTC unless you need to boot the same machine with windows. > The idea of running hwclock is to make sure that > exactly the problem with dovecot does NOT occur, > and ntp does not have a coughing fit when the hardware > clock is not close to the correct time upon booting. The standard start script (/etc/rc.d/init.d/ntpd) does a ntpdate before running (which is what you see in your log above) to keep ntp from "coughing". > The last time I booted some of those machine was more than 200 days ago, > so the hwclock will be skewed if I do not update it. I *WAS* beginning to think like the others, that the TZ file used by hwclock and by date don't match. However, I now *believe* I KNOW the source of the delta! IIRC the kernel magic (write system time to HC every eleven minutes) I was writing about earlier ... I don't think takes into account the local TZ, i.e., it ALWAYS works UTC. I would have to read the kernel source again to prove it, or suggest to you to try the following: 1) *remove* your cron job that called hwclock, because it is and will cause problems. 2) let the machine sync with the NTP server i.e., ntpdc -c kern |grep status returns something like: status: 0009 pll fll 2a) wait 12 minutes. 3) run: date -u ; hwclock --show --utc; date -u ; \ date ; hwclock --show ; date 4) run hwclock --systohc; \ date -u ; hwclock --show --utc; date -u ; \ date ; hwclock --show ; date 5) wait 23 more minutes 6) run date -u ; hwclock --show --utc; date -u ; \ date ; hwclock --show ; date if at 3 and 6 the utc versions of date and hwclock are in sync, then it is the ntpd synced kernel that is setting a utc time into the hwclock and you need to change the last line in /etc/adjtime to UTC instead of LOCAL. Otherwise a bit more thinking is in order. good luck. -- Todd Denniston Crane Division, Naval Surface Warfare Center (NSWC Crane) Harnessing the Power of Technology for the Warfighter ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] good shell script examples?
On Mon, Nov 15, 2010 at 7:54 PM, Max Hetrick wrote: > The book Learning the bash Shell helped me out a lot. > > http://oreilly.com/catalog/9781565923478 Classic online learning guide is "Advanced Bash-Scripting Guide" http://tldp.org/LDP/abs/html/ (I use it as reference, downloaded a PDF version) cheers Sven ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Auto-Re: CentOS Digest, Vol 70, Issue 14
2010/11/14 韦加宁 : > 信已收到,谢谢! This means something like "Letter has been received, thank you!". I don't know why somebody needs such an auto-replay for mailing lists? cheers Sven ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Best way to configure proprietary NVidia driver on CentOS ?
On 15/11/10 10:21, John Hodrien wrote: > On Mon, 15 Nov 2010, John Doe wrote: > >> I use dkms-nvidia-x11-drv and it works fine between kernel updates... While >> I know kmod is said to be better, last time I tried it, I failed to make it >> work. Maybe I will retry kmod later... > > I'd previously had an identical experience to yours with kmod-nvidia, but when > I recently tried it all worked without a hitch. dkms-nvidia from rpmforge is > just too far out of date now really. > The dkms driver is deprecated in favour of the elrepo kmod-nvidia driver. If you have problems with the kmod-nvidia driver, please do subscribe and post to the elrepo mailing list and someone will be more than happy to assist you. Most problems are likely caused by not properly uninstalling any previous incarnations of the nvidia driver, be it dkms or the NVIDIA installer. Thanks. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] good shell script examples?
On Mon, Nov 15, 2010 at 04:47:02PM -0200, Kill Script wrote: > I am looking for a beginner guide to shell scripting simple tasks on CentOS > (e.g. ssh'ing into a server / router / switch, checking for certain things, > then exiting and going to the next IP). > > Does anyone have any suggestions on where to look? (I'm relatively new to > bash) I have a page where I've posted what I've found to be useful links. http://home.roadrunner.com/~computertaijutsu/shellscripting.html -- Scott Robbins PGP keyID EB3467D6 ( 1B48 077D 66F6 9DB0 FDC2 A409 FA54 EB34 67D6 ) gpg --keyserver pgp.mit.edu --recv-keys EB3467D6 Spike: A slayer with family and friends. That sure as hell wasn't in the brochure. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] good shell script examples?
On Mon, Nov 15, 2010 at 13:54, Max Hetrick wrote: > On 11/15/2010 01:47 PM, Kill Script wrote: > > I am looking for a beginner guide to shell scripting simple tasks on > > CentOS (e.g. ssh'ing into a server / router / switch, checking for > > certain things, then exiting and going to the next IP). > > > > Does anyone have any suggestions on where to look? (I'm relatively new > > to bash) > > The book Learning the bash Shell helped me out a lot. > > http://oreilly.com/catalog/9781565923478 > > Regards, > Max > To answer your question, I have liked UNIX Shells By Example by Ellie Quigley (4th edition) it has good examples with explanations. The Linux Command line and Shell Scripting Bible is a good teaching tool. A new edition is due out next year but the current edition is still useful. As to what you appear to want to do, if you require interactive logins (i.e. ssh keys not set up for password-less logins) then bash is not the best choice. For this you would want to use either Python (with pyexpect module) or the Expect scripting language (Expect is an extension of the TCL scripting language. John -- John Kennedy ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SSH keys question [RESOLVED]
On Mon, Nov 15, 2010 at 13:45, Paul Heinlein wrote: > On Mon, 15 Nov 2010, cliff here wrote: > > > You should check the perms on the dirs, ssh will not allow it use > > the keys if they are too permissive. So I would check starting at > > /home > > This is the most likely cause; I'd check there too. > > If not, > > 1. Ensure the file hash is the same (e.g., no extraneous whitespace > in the middle of the key) > 2. sshd is usually pretty good about writing errors to syslog. > > -- > Paul Heinlein <> heinl...@madboa.com <> http://www.madboa.com/ > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > Found it... In /var/log/secure I got "Authentication refused: bad ownership or modes for directory /home/zema/.ssh" I had checked the file, not the directory... Thanks all... John -- John Kennedy ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] good shell script examples?
On 11/15/2010 01:47 PM, Kill Script wrote: > I am looking for a beginner guide to shell scripting simple tasks on > CentOS (e.g. ssh'ing into a server / router / switch, checking for > certain things, then exiting and going to the next IP). > > Does anyone have any suggestions on where to look? (I'm relatively new > to bash) The book Learning the bash Shell helped me out a lot. http://oreilly.com/catalog/9781565923478 Regards, Max ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SSH keys question
I do believe the perms need to be at 700 for the ./ssh dir and 640 for the actual key files contained. On Mon, Nov 15, 2010 at 1:45 PM, Paul Heinlein wrote: > On Mon, 15 Nov 2010, cliff here wrote: > > > You should check the perms on the dirs, ssh will not allow it use > > the keys if they are too permissive. So I would check starting at > > /home > > This is the most likely cause; I'd check there too. > > If not, > > 1. Ensure the file hash is the same (e.g., no extraneous whitespace > in the middle of the key) > 2. sshd is usually pretty good about writing errors to syslog. > > -- > Paul Heinlein <> heinl...@madboa.com <> http://www.madboa.com/ > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > -- - NOTICE: This message, including all attachments, is intended for the use of the individual or entity to which it is addressed and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, or the employee or agent responsible for delivering this message to its intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by replying "Received in error" and immediately delete this message and all its attachments. - ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] good shell script examples?
I am looking for a beginner guide to shell scripting simple tasks on CentOS (e.g. ssh'ing into a server / router / switch, checking for certain things, then exiting and going to the next IP). Does anyone have any suggestions on where to look? (I'm relatively new to bash) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SSH keys question
On Mon, 15 Nov 2010, cliff here wrote: > You should check the perms on the dirs, ssh will not allow it use > the keys if they are too permissive. So I would check starting at > /home This is the most likely cause; I'd check there too. If not, 1. Ensure the file hash is the same (e.g., no extraneous whitespace in the middle of the key) 2. sshd is usually pretty good about writing errors to syslog. -- Paul Heinlein <> heinl...@madboa.com <> http://www.madboa.com/ ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Question about a hard drive error
On Wed, 10 Nov 2010, John R Pierce wrote: > On 11/10/10 6:58 PM, Gilbert Sebenste wrote: >> Hey everyone, >> >> I just got one of these today: >> >> Nov 10 16:07:54 stormy kernel: sd 0:0:0:0: SCSI error: return code = >> 0x0800 >> Nov 10 16:07:54 stormy kernel: sda: Current: sense key: Medium Error >> Nov 10 16:07:54 stormy kernel: Add. Sense: Unrecovered read error >> Nov 10 16:07:54 stormy kernel: >> Nov 10 16:07:54 stormy kernel: Info fld=0x0 >> Nov 10 16:07:54 stormy kernel: end_request: I/O error, dev sda, sector >> 3896150669 > > see where it says dev sda ? thats physical drive zero which has a read > error on that sector. > > >> Nov 10 16:07:54 stormy kernel: Read-error on swap-device (253:1:743752) >> Nov 10 16:07:54 stormy kernel: Read-error on swap-device (253:1:743760) >> Nov 10 16:07:54 stormy kernel: Read-error on swap-device (253:1:743768) >> Nov 10 16:07:54 stormy kernel: Read-error on swap-device (253:1:743776) >> Nov 10 16:07:54 stormy kernel: Read-error on swap-device (253:1:743784) >> Nov 10 16:07:54 stormy kernel: Read-error on swap-device (253:1:743792) >> Nov 10 16:07:54 stormy kernel: Read-error on swap-device (253:1:743800) >> Nov 10 16:07:54 stormy kernel: Read-error on swap-device (253:1:743808) >> >> My question is this: I have RAID00 set up, but don't really understand >> it well. This is how my disks are set up: >> >> Filesystem 1K-blocks Used Available Use% Mounted on >> /dev/mapper/VolGroup00-LogVol00 >> 1886608544 296733484 1492495120 17% / >> /dev/sda1 101086 19877 75990 21% /boot >> tmpfs 1684312 1204416479896 72% /dev/shm >> > > that is not how your disks are setup, thats how your FILE SYSTEMS are setup. Correct, apologies for the incorrect wording. > that dev/mapper thing is a LVM volume. you can display the physical volumes > behind a LVM with the command 'pvs' Thank you! That was helpful. >> Which one is having the trouble? Any ideas so I can swap it out? > > raid0 is not suitable for reliability. if any one drive in the raid0 fails > (or is removed) the whole volume has failed and will become unusable. Thanks John, I appreciate it! Both are being replaced after a nearby 55 KV power line shorted to ground and blew a manhole cover 50' into the air, damaging a lot of equipment over here, even those on UPS's. Nobody was hurt, thank goodness. But, I'll be looking into RAID 5 in the future. *** Gilbert Sebenste (My opinions only!) ** *** ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] SSH keys question
You should check the perms on the dirs, ssh will not allow it use the keys if they are too permissive. So I would check starting at /home On Mon, Nov 15, 2010 at 1:29 PM, John Kennedy wrote: > All, > I have 3 servers. All 3 are CentOS 5.5. All 3 have identical > /etc/ssh/sshd_config files. I used ssh-keygen (with no arguments) to > generate keys with no password. I then added all 3 id_rsa.pub keys to the > authorized_keys file. > With this set up, I should be able to ssh between all 3 boxes without > needing a password. The problem is that one of the servers keeps asking for > a password even with the keys set up. > > servera --> serverb No password > serverb --> servera No password > servera --> serverc Password > serverc --> servera No password > serverb --> serverc Password > serverc --> serverb No password > > If they are all identical from an ssh standpoint (at least the > authorized_keys, /etc/sshd_config, and UID for the user on all 3 hosts), why > will serverc not play nicely with the other 2> Is there something else I > should be checking? > > Thanks, > John > > -- > John Kennedy > > > ___ > CentOS mailing list > CentOS@centos.org > http://lists.centos.org/mailman/listinfo/centos > > -- - NOTICE: This message, including all attachments, is intended for the use of the individual or entity to which it is addressed and may contain information that is privileged, confidential and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, or the employee or agent responsible for delivering this message to its intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify the sender immediately by replying "Received in error" and immediately delete this message and all its attachments. - ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] SSH keys question
All, I have 3 servers. All 3 are CentOS 5.5. All 3 have identical /etc/ssh/sshd_config files. I used ssh-keygen (with no arguments) to generate keys with no password. I then added all 3 id_rsa.pub keys to the authorized_keys file. With this set up, I should be able to ssh between all 3 boxes without needing a password. The problem is that one of the servers keeps asking for a password even with the keys set up. servera --> serverb No password serverb --> servera No password servera --> serverc Password serverc --> servera No password serverb --> serverc Password serverc --> serverb No password If they are all identical from an ssh standpoint (at least the authorized_keys, /etc/sshd_config, and UID for the user on all 3 hosts), why will serverc not play nicely with the other 2> Is there something else I should be checking? Thanks, John -- John Kennedy ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] MacBook Pro and CentOS-5
On 11/15/2010 11:29 AM, James B. Byrne wrote: > >> Can't help directly with the hardware questions, but (a) if you are >> still within your Applecare coverage, take the thing in and get >> anything that doesn't work fixed before touching the OS, and (b) >> you might try Virtualbox with Centos as a guest (or VMware if you >> don't mind paying for it). I've generally found the vendor- >> supplied native video, sleep, and wireless tools work best on >> laptops and virtual machines work well enough for the client-type >> things I do under Centos. > > Well, I have done the Apple support thing and Apple's official > position is that I have an interference problem. The fact that I > have six other laptops plus two X-Boxes, all with wireless > connections, in the same household and none of which exhibit the > problems that I have with the Macbook, is quite beside the point > insofar as the Apple Genii are concerned. > > This to me is utter BS, since I can see in the log files that that > the wireless driver is arbitrarily disconnecting the link due to > "lack of activity" and then choking when trying to reconnect. There > are a host of other odd little symptoms that also lead me to believe > that it is the Apple drivers that are at the root of the problem. That actually seems pretty unlikely, since a bazillion other people use the same drivers... Or at least it is a quirk of your setup that triggers the issue. Do you have wireless phones in the same frequency range nearby? I do, and see disconnects that I think are related in my d-link router logs but haven't seen any problems with connections being re-established from anything including my son's macbook. Have you used wireless in any other locations, and if so, do you always see the same problem? > For one thing, a frequent occurrence is that I get a 'browser is > offline' (in both Safari and Firefox) when opening a new tab, but > the existing tabs in the same browser instance can visit new pages > on existing connections!!?? How that works is beyond me but it > happens, often. That doesn't make much sense but you are probably trying to reuse a socket that has received a reset - browsers open several sockets simultaneously and the others might not have been busy during the network disconnect. > And it is the wireless NIC that I most need fixed. Right now I have > to shut down the Airport and restart it to clear the problems. In > itself this is no big deal, but I am just so tried of having to do > this with such an expensive piece of kit. Do you mean disable the wireless NIC and re-enable (which sort-of makes sense) or doing something to the router? If you really have to restart the router, that's probably the source of the problem. > If CentOS does not support the wireless in the Macbook then I am > stuck with the sucker until I get up enough gumption to buy a > Toshiba. Which is what I should have done when I allowed myself to > be talked into the HP to begin with. Hardware is all pretty much the same - it either works or it doesn't. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] can't find ldapseaerch
>> >> [r...@virtcent13 ~]# ldapsearch >> ldapsearch: Command not found. >> [r...@virtcent13 ~]# whereis ldapsearch >> ldapsearch: /usr/bin/ldapsearch /usr/share/man/man1/ldapsearch.1.gz $ file /usr/bin/ldapsearch $ ldd /usr/bin/ldapsearch ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] ipvs and destination hashing...
Hi, just in case some ipvs knowledgable people read this... I tried to find some info on ipvs destination hashing on the net but did not find anything... Right now we have a basic direct routing round-robin keepalived configuration: abc.example.com (a.b.c.d) => LVS ( round-robin ) => server_[1..n] with IP[1..n]. If we use the dh option, on what would the hashing be done? I saw some pseudo code that states that the hash is based on the destination IPs in the packets... But there is only 1 IP in input and the output IPs are selected by round-robin already (so no point dhing them)... Do we have to have n IPs for abc.example.com (in the dns) and the hashing will be done on these IPs? Thx, JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] MacBook Pro and CentOS-5
This is off list topic, but I have seen weirdness in airport cards on macs especially when connecting to Apple's Airport. A cheap fix is to buy a 2nd wireless access point and make sure to use that in bridged mode so it is not acting as a router and wire that to your airport base station. I like said before trying using an external hard drive to install CentOS onto and try your wireless card and other hardware drivers. This is a free solution except for the cost of the hard drive. -Jeff On Nov 15, 2010, at 9:29 AM, James B. Byrne wrote: > > On Mon, November 15, 2010 11:44, Les Mikesell wrote: > >> >> Can't help directly with the hardware questions, but (a) if you are >> still within your Applecare coverage, take the thing in and get >> anything that doesn't work fixed before touching the OS, and (b) >> you might try Virtualbox with Centos as a guest (or VMware if you >> don't mind paying for it). I've generally found the vendor- >> supplied native video, sleep, and wireless tools work best on >> laptops and virtual machines work well enough for the client-type >> things I do under Centos. > > Well, I have done the Apple support thing and Apple's official > position is that I have an interference problem. The fact that I > have six other laptops plus two X-Boxes, all with wireless > connections, in the same household and none of which exhibit the > problems that I have with the Macbook, is quite beside the point > insofar as the Apple Genii are concerned. > > This to me is utter BS, since I can see in the log files that that > the wireless driver is arbitrarily disconnecting the link due to > "lack of activity" and then choking when trying to reconnect. There > are a host of other odd little symptoms that also lead me to believe > that it is the Apple drivers that are at the root of the problem. > For one thing, a frequent occurrence is that I get a 'browser is > offline' (in both Safari and Firefox) when opening a new tab, but > the existing tabs in the same browser instance can visit new pages > on existing connections!!?? How that works is beyond me but it > happens, often. > > And it is the wireless NIC that I most need fixed. Right now I have > to shut down the Airport and restart it to clear the problems. In > itself this is no big deal, but I am just so tried of having to do > this with such an expensive piece of kit. > > If CentOS does not support the wireless in the Macbook then I am > stuck with the sucker until I get up enough gumption to buy a > Toshiba. Which is what I should have done when I allowed myself to > be talked into the HP to begin with. > > -- > *** 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 mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] MacBook Pro and CentOS-5
On Mon, November 15, 2010 11:44, Les Mikesell wrote: > > Can't help directly with the hardware questions, but (a) if you are > still within your Applecare coverage, take the thing in and get > anything that doesn't work fixed before touching the OS, and (b) > you might try Virtualbox with Centos as a guest (or VMware if you > don't mind paying for it). I've generally found the vendor- > supplied native video, sleep, and wireless tools work best on > laptops and virtual machines work well enough for the client-type > things I do under Centos. Well, I have done the Apple support thing and Apple's official position is that I have an interference problem. The fact that I have six other laptops plus two X-Boxes, all with wireless connections, in the same household and none of which exhibit the problems that I have with the Macbook, is quite beside the point insofar as the Apple Genii are concerned. This to me is utter BS, since I can see in the log files that that the wireless driver is arbitrarily disconnecting the link due to "lack of activity" and then choking when trying to reconnect. There are a host of other odd little symptoms that also lead me to believe that it is the Apple drivers that are at the root of the problem. For one thing, a frequent occurrence is that I get a 'browser is offline' (in both Safari and Firefox) when opening a new tab, but the existing tabs in the same browser instance can visit new pages on existing connections!!?? How that works is beyond me but it happens, often. And it is the wireless NIC that I most need fixed. Right now I have to shut down the Airport and restart it to clear the problems. In itself this is no big deal, but I am just so tried of having to do this with such an expensive piece of kit. If CentOS does not support the wireless in the Macbook then I am stuck with the sucker until I get up enough gumption to buy a Toshiba. Which is what I should have done when I allowed myself to be talked into the HP to begin with. -- *** 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] MacBook Pro and CentOS-5
Being a mac system admin and support specialist and CentOS guy. I can say you can always try using an external hard drive to boot the Mac off of and install CentOS on that drive to play around and test out all the drivers for video card, wireless, etc... I don't boot into CentOS but have it running in Parallels and it runs great. I also do recommend to get your Mac repaired too, just be sure to clone your hard drive off to an external drive before sending it into the shop. Apple is known to completely erase hard drives with no warning. -Jeff On Nov 15, 2010, at 8:44 AM, Les Mikesell wrote: > On 11/15/2010 10:18 AM, James B. Byrne wrote: >> After a long, and quite disheartening, series of hardware problems >> with my HP laptop I decided to try out a Mac (late 2009 Intel based >> 19.5 inch). In the months since January past I have discovered this >> to be no significant improvement and I have grown tired of the >> persistent wireless connectivity problems and am totally put off by >> the upgrade to OSX-10.6.4 which killed HD graphics using Open-Gl. >> Since July, trying to use HD on my Mac now blackens half the screen >> and then locks the system. >> >> I am contemplating wiping the system and installing CentOS-5.5 >> instead. Before my frustration leads me to run straight on into a >> wall, what can I expect to NOT work on the Macbook if I do this? I >> do need wireless, albeit I really cannot say that I have it now. I >> also dearly would like to get back HD graphics as well. > > Can't help directly with the hardware questions, but (a) if you are > still within your Applecare coverage, take the thing in and get anything > that doesn't work fixed before touching the OS, and (b) you might try > Virtualbox with Centos as a guest (or VMware if you don't mind paying > for it). I've generally found the vendor-supplied native video, sleep, > and wireless tools work best on laptops and virtual machines work well > enough for the client-type things I do under Centos. > > -- > Les Mikesell > lesmikes...@gmail.com > ___ > 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
[CentOS] Auto-Re: CentOS Digest, Vol 70, Issue 15
信已收到,谢谢! ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] MacBook Pro and CentOS-5
On 11/15/2010 10:18 AM, James B. Byrne wrote: > After a long, and quite disheartening, series of hardware problems > with my HP laptop I decided to try out a Mac (late 2009 Intel based > 19.5 inch). In the months since January past I have discovered this > to be no significant improvement and I have grown tired of the > persistent wireless connectivity problems and am totally put off by > the upgrade to OSX-10.6.4 which killed HD graphics using Open-Gl. > Since July, trying to use HD on my Mac now blackens half the screen > and then locks the system. > > I am contemplating wiping the system and installing CentOS-5.5 > instead. Before my frustration leads me to run straight on into a > wall, what can I expect to NOT work on the Macbook if I do this? I > do need wireless, albeit I really cannot say that I have it now. I > also dearly would like to get back HD graphics as well. Can't help directly with the hardware questions, but (a) if you are still within your Applecare coverage, take the thing in and get anything that doesn't work fixed before touching the OS, and (b) you might try Virtualbox with Centos as a guest (or VMware if you don't mind paying for it). I've generally found the vendor-supplied native video, sleep, and wireless tools work best on laptops and virtual machines work well enough for the client-type things I do under Centos. -- Les Mikesell lesmikes...@gmail.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] MacBook Pro and CentOS-5
After a long, and quite disheartening, series of hardware problems with my HP laptop I decided to try out a Mac (late 2009 Intel based 19.5 inch). In the months since January past I have discovered this to be no significant improvement and I have grown tired of the persistent wireless connectivity problems and am totally put off by the upgrade to OSX-10.6.4 which killed HD graphics using Open-Gl. Since July, trying to use HD on my Mac now blackens half the screen and then locks the system. I am contemplating wiping the system and installing CentOS-5.5 instead. Before my frustration leads me to run straight on into a wall, what can I expect to NOT work on the Macbook if I do this? I do need wireless, albeit I really cannot say that I have it now. I also dearly would like to get back HD graphics as well. Regards, -- *** 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] RPM/YUM on CentOS 5.4 issue - multiple versions of the same package installed
Gabriel Tabares wrote, On 11/15/2010 08:05 AM: > On 11/11/2010 13:47, Gabriel Tabares wrote: >> Hi all, >> >> We currently have an issue with multiple versions of a custom package >> being installed. The RPM contains a liquibase script (a Java-based DB >> change management tool) and a %post script to run liquibase. >> >> We are installing with scripts that run "yum update liquibase-script". >> >> If the %post script runs correctly, it returns 0 and the application >> gets installed correctly but, if the %post script fails, it returns -1 >> and the application does get installed, but the old one does not get >> unistalled, so if I run "rpm -qa | grep liquibase-script" I get a list >> of all the versions that have been installed. >> >> I know that the files have been installed correctly, as the RPM contents >> have the same name but different content and I have checked it. >> >> Why is this happening? >> >> I thought that %post scripts failing do not prevent the application to >> installing and that RPM installation is atomic, so installing one >> package will remove the previous verison. Is there any way to prevent >> this issue? >> >> We're using CentOS 5.4 on x86_64 >> > Any suggestion, guys? > > Thanks > > Gabriel > The fedora folks have a pretty thorough how to: http://fedoraproject.org/wiki/PackageMaintainers/CreatingPackageHowTo And man package-cleanup Hope this helps. -- Todd Denniston Crane Division, Naval Surface Warfare Center (NSWC Crane) Harnessing the Power of Technology for the Warfighter ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] updating to gtk+ >= 2.0
>> In that case: >> >> yum install gtk2 gtk2-devel > > Funny thing is those are already installed. > > However I require a later version of gtk+. > > I'm attempting to compile from source. > CentOS comes with an old version of GTK 2. Most application these days require a later version of the library, so you have two realistic options: * Compile GTK from source and install it out of the standard library path, then specify the include paths for compiling and use LD_LIBRARY_PATH before running the application. * Use another Linux distritbution or wait for CentOS 6 There's another option that is not guaranteed to work, copy all the libraries you need from another Linux distribution (Fedora?) into a directory, use LD_LIBRARY_PATH and pray that it works with CentOS, but I would not place much trust on this option. I would personally go for the latter option as compiling a new version of GTK and its dependencies is not for the faint of heart, specially for something as obsolete (by choice) as CentOS. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] hwclock problem
On 11/11/2010 06:41 PM, Jobst Schmalenbach wrote: > Hi. > > I run peridocally (from cron) on all of my machines > >30 * * * * root /sbin/hwclock --systohc > > All of those machines in question take their time via NTP > from the same local server, and that server gets its time > from a ntp pool. > > Now I had to reboot a couple of them two days ago and to my surprise > all had problems with the time upon booting. > > Here are the important files: > > [r...@xx ~] #>l /etc/adjtime > 0.001687 1289518202 0.00 > 1289518202 > LOCAL > > [r...@xxx ~] #>l /etc/sysconfig/clock > ZONE="Australia/Melbourne" > UTC=false > ARC=false > > So from my understanding the hwclock should contain the local time. > > [r...@xx ~] #>date > Fri Nov 12 11:26:23 EST 2010 > [r...@xx ~] #>hwclock > Fri 12 Nov 2010 11:26:42 EST -0.167976 seconds > [r...@xx ~] #> > > However on boot I get the following: > > Nov 10 19:08:37 XX syslogd 1.4.1: restart. > Nov 10 19:08:37 XX kernel: klogd 1.4.1, log source = /proc/kmsg started. > Nov 10 19:08:37 XX kernel: Linux version 2.6.18-164.11.1.el5 > (mockbu...@builder10.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4. > 1.2-46)) #1 SMP Wed Jan 20 07:32:21 EST 2010 > Nov 10 19:08:37 XX kernel: Command line: ro root=/dev/sda2 vga=791 > Nov 10 19:08:37 XX kernel: BIOS-provided physical RAM map: > ... > ... > Nov 10 19:08:51 XX kernel: IPv6 over IPv4 tunneling driver > Nov 10 08:08:52 XX ntpdate[2464]: step time server 192.168.1.1 offset > -39599.950905 sec > Nov 10 08:08:52 XX xinetd[2447]: xinetd Version 2.3.14 started with > libwrap loadavg labeled-networking options compiled in. > > and off course dovecot falls over too "Time just moved backwards by 39599 > seconds." > > Now, 39600s is 11 hours, which is (inc DST) *MY* offset from Greenwich. > > > So what am I doing wrong? > The idea of running hwclock is to make sure that exactly the problem with > dovecot does NOT occur, and ntp does not have a coughing fit when the > hardware clock is not close to the correct time upon booting. > The last time I booted some of those machine was more than 200 days ago, so > the hwclock will be skewed if I do not update it. By any chance is /etc/localtime a symlink to a file system that is not mounted early in the boot process? That's why /etc/localtime is normally a _copy_ of the appropriate zoneinfo file. -- Bob Nichols "NOSPAM" is really part of my email address. Do NOT delete it. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] RPM/YUM on CentOS 5.4 issue - multiple versions of the same package installed
On 11/11/2010 13:47, Gabriel Tabares wrote: > Hi all, > > We currently have an issue with multiple versions of a custom package > being installed. The RPM contains a liquibase script (a Java-based DB > change management tool) and a %post script to run liquibase. > > We are installing with scripts that run "yum update liquibase-script". > > If the %post script runs correctly, it returns 0 and the application > gets installed correctly but, if the %post script fails, it returns -1 > and the application does get installed, but the old one does not get > unistalled, so if I run "rpm -qa | grep liquibase-script" I get a list > of all the versions that have been installed. > > I know that the files have been installed correctly, as the RPM contents > have the same name but different content and I have checked it. > > Why is this happening? > > I thought that %post scripts failing do not prevent the application to > installing and that RPM installation is atomic, so installing one > package will remove the previous verison. Is there any way to prevent > this issue? > > We're using CentOS 5.4 on x86_64 > Any suggestion, guys? Thanks Gabriel ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] xServes are dead ;-( / SAN Question
> I tought of that, and I will be needing something like this, since I have > some services that need to be restarted in the event of them dying or being > killed. > > But I'm not that much confortable scripting a modification of the initab to > activate / deactivate services on a server-by-server basis. > Have a look at monit. We are using it for restarting critical services (heartbeat, postfix, apache) if they fail and it has been simple to set up and stable. The most useful thing is that it emails you whenever the PID of the process changes or it has to restart it. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Does "yum update tzdata" update /etc/localtime?
On Monday 15 November 2010 00:13:53 Jobst Schmalenbach wrote: > Does "yum update tzdata" update /etc/localtime or does this need > to be done manually? No, it doesn't. It is created by Anaconda during install. > [this is part of the hwclock problem, a guy from sage-au has given me a > hint] I mentioned this file on your other thread last night but afterwards I thought you had it right since the output for your date commands contained "EST" which is correct for your timezone. -- Jorge ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] hwclock problem
Hi, > On 11/14/10 5:38 PM, Jobst Schmalenbach wrote: > > Ok I try that, but the thing is: > > > > * motherboards not that old > > * its exactly 11 hours (+/- a couple of seconds) each time > > > sounds like a conflict between time zones.a PC hardware clock could > be set to UTC or local time. I always set my PC Hardware clocks to > localtime, and make sure Unix knows it. darnit, I can't remember > where > that setting is right now. Seems to me that the kernel is expecting the hardware clock to be at UTC. This may be a bug in hwclock or a typo in /etc/sysconfig/clock Have you tried to setting the hwclock to UTC and leaving it there? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] can't find ldapseaerch
On Sat, 2010-11-13 at 18:09 -0500, bluethundr wrote: > hello list > > I'm having a very strange problem with my centos 5.5 system. For some > strange reason, this machine cannot find ldapsearch: > > [r...@virtcent13 ~]# ldapsearch > ldapsearch: Command not found. > > > [r...@virtcent13 ~]# whereis ldapsearch > ldapsearch: /usr/bin/ldapsearch /usr/share/man/man1/ldapsearch.1.gz > > ldapsearch currently lives at /usr/bin along with a lot of other > really very useful tools. > > > /usr/bin is also _clearly_ on my root path:i > > [r...@virtcent13 ~]# echo $PATH > /usr/kerberos/sbin:/usr/kerberos/bin:/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/usr/X11R6/bin > > And here are the permissions and modes for this tool: > > [r...@virtcent13 bin]# ls -l ldapsearch > -rwxr-xr-x 1 root wheel 65336 Aug 11 09:20 ldapsearch given your 'echo $PATH' it should work... you might want to verify the package... [r...@srv1 ~]# rpm -q --whatprovides /usr/bin/ldapsearch openldap-clients-2.3.43-3.el5 [r...@srv1 ~]# rpm -V openldap-clients # 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] Best way to configure proprietary NVidia driver on CentOS ?
On Mon, 15 Nov 2010, John Doe wrote: > I use dkms-nvidia-x11-drv and it works fine between kernel updates... While > I know kmod is said to be better, last time I tried it, I failed to make it > work. Maybe I will retry kmod later... I'd previously had an identical experience to yours with kmod-nvidia, but when I recently tried it all worked without a hitch. dkms-nvidia from rpmforge is just too far out of date now really. jh ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Best way to configure proprietary NVidia driver on CentOS ?
From: Nicolas Kovacs > What's the best (cleanest, easiest, whatever) way to install the proprietary > NVidia driver on CentOS 5.5 ? Usually I'm using the RPMForge 3rd party repo > and compile the odd missing package myself from a Fedora SRPM. But the > nvidia > packages look a bit like a mess. DKMS has errors in the startup script > (looking for a nonexistent log_action_msg and the likes), so I wonder if > it's > best to just download the driver from nvidia.com and build it myself. I use dkms-nvidia-x11-drv and it works fine between kernel updates... While I know kmod is said to be better, last time I tried it, I failed to make it work. Maybe I will retry kmod later... JD ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
