Re: [CentOS] PHP and PHP53
On 04/17/2012 12:18 AM, Max Pyziur wrote: Greetings, We have someone requesting the use of Wordpress 3.3.1. It requires PHP 5.2 minimum. Currently, our machine is running CentOS 5.7. What are the issues/concerns in upgrading from PHP 5.1 (the current PHP rpms) to PHP53? We have been using php53 on all of our centos5 servers for severeal months, now. No major problem at all. Just set the timezone in /etc/php.ini. Much thanks, Max Pyziur p...@brama.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Bye, Peter -- Peter Hopfgartner web : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Installation on a Macbook Pro with nVidia MCP89 SATA controller
Did anybody succeed in installing CentOS on a MacBook Pro with nVidia chipset (2010 edition, http://www.heise.de/mac-and-i/produkte/macbook-13-2-4-ghz-mitte-2010-86/#produkt_detail)? When I boot with the current minimal install disk, Linux does simply see non disks. Regards, Peter -- Peter Hopfgartner R3 GIS http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Installation on a Macbook Pro with nVidia MCP89 SATA controller
On 12/27/2011 03:05 PM, B.J. McClure wrote: On Tue, 2011-12-27 at 15:00 +0100, Ljubomir Ljubojevic wrote: On 12/27/2011 02:10 PM, B.J. McClure wrote: On Tue, 2011-12-27 at 09:30 +0100, Peter Hopfgartner wrote: Did anybody succeed in installing CentOS on a MacBook Pro with nVidia chipset (2010 edition, http://www.heise.de/mac-and-i/produkte/macbook-13-2-4-ghz-mitte-2010-86/#produkt_detail)? When I boot with the current minimal install disk, Linux does simply see non disks. Regards, Peter I tried CentOS 6.0 and 6.1 on Mac-Air with SSD. Installer could not find SSD and Google did not help. FWIW, Ubuntu installed fine. If you find the solution please post. All other machines in our shop are CentOS 5.x, 6.x or RHEL 6.x, so commonality would be perfect. Sorry I could not help. B.J. CentOS release 6.2 (Final) It is not clear if either of you tried CentOS 6.2, or just 6.0 and 6.2. Errr, maybe a re-read is in order? I tried CentOS 6.0 and 6.1 on Mac-Air with SSD. B.J. CentOS release 6.2 (Final) ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos I've tried 6.1 and 6.2. The entry in the kernel bugzilla should be (does not open, for me): https://bugzilla.kernel.org/show_bug.cgi?id=15923 In the Fedora Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=6080340 I guess, it all comes down to Red Hat including this patch or not. Regards, Peter -- Peter Hopfgartner R3 GIS http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] Should I switch and if so what is the procedure
On 10/06/2011 12:58 PM, Rich wrote: Its seems that I should switch then. I have 2 servers using Xen. What is the procedure to conver them? Is there procedure I should use. I have to use the same boxes I can not export vm's. I've used the following links to migrate our office servers: http://www.gloudemans.info/migrate-paravirtualized-xen-to-kvm-under-rhel/ http://www.cyberciti.biz/faq/troubleshooting-kvm-virtualization-problem-with-log-files/ http://www.cyberciti.biz/faq/rhel-linux-kvm-virtualization-bridged-networking-with-libvirt/ In any case, be cautious, make backups and don't do this at 3:00 AM. Peter On Wed, Oct 5, 2011 at 7:46 PM, Dennis Jacobfeuerborn denni...@conversis.de mailto:denni...@conversis.de wrote: On 10/05/2011 06:16 PM, Ed Heron wrote: On Wed, 2011-10-05 at 10:55 -0400, Rich wrote: Since the Xen and Linux kernel people have finally made peace and Xen is going to be included with the kernel, should I keep using the Xen virtual server with Centos or should I switch to KVM? I am running Centos 5.7 now. I guess the real question is can I still use Xen with Centos 6? The support end of life for CentOS 5 is listed as March 31, 2014 (http://wiki.centos.org/FAQ/General#head-fe8a0be91ee3e7dea812e8694491e1dde5b75e6d). There isn't any pressure, at this point, to convert your VM hosts to CentOS 6 unless there is some feature you require. I doubt RH will add XEN support to RHEL 6. They don't like to add functionality to an existing product. We can hope they bring XEN back in RHEL 7. While Xen will probably return in RHEL 7 simply because it is part of the upstream kernel now I doubt it will be officially supported by Red Hat. Between buying Qumranet (http://www.redhat.com/promo/qumranet/) and now Gluster (https://www.redhat.com/promo/storage/) it is clear that Red Hat aims to become a provider of a complete independent virtualization stack and is unlikely to support competing products directly. The question is what does Xen offer that KVM cannot provide? Looking at the slides of the KVM Forum 2011 (http://www.linux-kvm.org/page/KVM_Forum_2011) there seem to be many interesting improvements in the pipeline so at some point the question really is why hold on to Xen at all when there is not real reason to? Regards, Dennis ___ CentOS-virt mailing list CentOS-virt@centos.org mailto:CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] Connection stall when connecting to XEN guests
Hello I have a physical server (Dell Poweredge 1950III) running current CentOS 5.4 x86_64 and the XEN hypervisor, provided by CentOS. This machine has 2 virtual machines installed, both with CentOS 5.4 x86_64. Unfortunatly SSH connections coming both, from an external machine or from DOM0, regularly stall, for a period of some minutes. In other words, while working through SSH, at a given moment everything freezes and after some minutes thaws again. We have several other machines with similar hardware/software configurations, but none of these has similar stalls. Anyway, when attaching the console with xm console vm-name there are no stalls at all. Does anybody have any suggestion on where to start to trouble shoot this problem? Regards, Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com XING : http://www.xing.com/go/invita/8917535 ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS-virt] Connection stall when connecting to XEN guests
compdoc wrote: Ive seen this happen in some distros when the option 'UseDNS' is set to yes in the file sshd_config Of course, there could be issues with your network setup as well... ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt Nothing seems to change. Indeed, also pinging the guest has the same problems. I'm also monitoring this machine since this morning and services are up and down and I can not understand why. iptables on dom0 and vm guest are, at the moment, turned off. Summarizing: 1. This happens on all XEN guests on this physical server, except dom0. It does not happen on any other server/xen guest. 2. Outgoing network connections are fine. 3. xm console xen_guest works fine. Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com XING : http://www.xing.com/go/invita/8917535 ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] Who's eating our bandwidth?
Niki Kovacs wrote: Hi, I've recently setup a new server for our public libraries. For the last two years, this has been my first big job, since it involves networking eleven small to medium size public libraries. There was a hiccup some time ago when the administration hiring me wanted to do it on their own, but it took them less than two weeks to get the server hacked and lose everything. So they decided to hire me back :o) I've rented a little dedicated server at the french provider Ikoula. Really a small thing, a KVM amounting to 1/2 a processor core, 512 MB RAM and 25 GB of disk space. Usually there should be no more than like ten people working simultaneously on the library management software (running atop MySQL). For the last few days, users reported that the install was terribly slow. I checked, and indeed, the application took quite some time to respond. First thing, I wonder if the configuration I chose is too modest for the setup. Then, I took a peek in /var/log/httpd and the *-access.log files show quite some activity. Some haphazard whois on various IP addresses show me that these are no library users from around here. Like: Bogota?!? Peking?!? And quite some search engines. Since I don't need search engines for our application, I'm going to have to find a way to banish these. The log files are not very handy to decipher, so I googled a bit, and I think today I'm going to check out AWStats, which seems to be the right thing to use in that case. I'm also wondering about activity on other ports, but here also I'm taking stabs in the dark. Probably SSH, but I don't know where eventual failed attempts get logged. I also googled a bit, and I think in this domain, fail2ban will be my next experiment. I have this strange feeling that the next step in the wise direction consists in describing my ignorance :o) Any suggestions? Cheers from the sunny south of France, Niki ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Try to do some smart configuration on Apache: 1) You may consider to compress HTML, CSS and JS (http://httpd.apache.org/docs/2.2/mod/mod_deflate.html). This may save you quite some bandwidth. 2) Further, consider adding some expiration attributes (http://httpd.apache.org/docs/2.2/mod/mod_expires.html). Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] install Oracle on the Centos
Han mo wrote: Hello everyone, does anyone install the oracle on the centos? I try to install the oracle on my computer. but fail. It has problem on kernel setting and add the swap disk. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Just use the instructions that you find for Red Hat RHEL. Googling around that are tons of docs on this topic, e.g.: http://www.oracle.com/technology/pub/articles/smiley_10gdb_install.html http://www.linuxjournal.com/article/3572 Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Connection to Microsoft ISA 2006 via IPsec
Dear list members, has anybody successfully established a VPN connection with CentOS to a VPN served by a Micorosft ISO 2006 server (IPsec + tunnel mode)? Regards, Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS-virt] Migrating from VMWare Workstation
Peter Hopfgartner wrote: Dear virt list I have some virtual machines running on my notebook under VMWare 6.5.2 64 bit that I would like to move to a current 64 bit CentOS 5.3 machine with a current Intel Xeon processor. The virtual machines do use the GUI, e.g. they are not text only. Is it better to use VMware server or Xen? If using Xen, do I have to convert the images? Regards, Peter 1: you can not run XEN and VMWare server at the same time. VMWare refuses to install with a XEN-enabled kernel. 2: A How-To for migrating CentOS images is at http://www.funkypenguin.info/tutorial/how-to-convert-a-centos-5-vmware-image-to-xen/ Will try it next week. Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
[CentOS-virt] Migrating from VMWare Workstation
Dear virt list I have some virtual machines running on my notebook under VMWare 6.5.2 64 bit that I would like to move to a current 64 bit CentOS 5.3 machine with a current Intel Xeon processor. The virtual machines do use the GUI, e.g. they are not text only. Is it better to use VMware server or Xen? If using Xen, do I have to convert the images? Regards, Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Re: [CentOS] which programming language for server-side admin tasks
Rudi Ahlers wrote: Hi, I would like to spend some time learning a new coding language, but specifically for server side admin stuff, i.e. setting up users / databases / FTP accounts / virtual domains on Apache, etc. I already know PHP, but realize it's not quite suited for this kind of admin, and I suppose I need to look @ PERL / Python / C++ / Ruby? / others? Can someone give me some pointers on this? Python has become quite common for sysadmin stuff. Indeed, a lot of RedHat/Fedora (e.g. anaconda, the installer) and Ubuntu tools are really Python scripts. The code is quite readable and usually, there are Python bindings for almost every popular C library. GUI can quickly be made with PyGTK or WxPython. Programming language runtime performance is usually not an issue for sysadmin tasks, since most of the time you r program will have to wait for some disk I/O, a backup tape, etc. I basically need to write a control panel, with web access for admins to manage servers, similar to what cPanel / WebMin / Plesk / etc does right now, but something more customized for our needs. -- Kind Regards Rudi Ahlers CEO, SoftDux Hosting Web: http://www.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532 Peter ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Random server reboot after update to CentOS 5.3
Scott Silva wrote: on 6-3-2009 2:27 AM Peter Hopfgartner spake the following: Epilogue: I've tried to disable TSO (ethtool -K eth0 tso off), as was suggested on the poweredge list. This did not help. I've configured the machine to start with the 5.2 kernel in /boot/grub/grub.conf, changing the default. It has been running for 6 1/2 days, now. I would say that this helped and is what I would suggest to others experiencing the same problem, right now. Thus, current running kernel is 2.6.18-92.1.10.el5xen. Regards and thanks for all replies, Peter That sure points to a machine/kernel conflict. You could try getting the source and rebuilding to see if that solves it, or maybe a diff of the two kernel configs to see if something is different there. Maybe someting is added or turned on in the new kernel that your system doesn't like. Also, make sure your systems bioses are up to date. Not just motherboard, but any other cards that have firmware that might have an update like raidcard/sas controllers or ??? ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Dear Scott, unfortunately the machine is in production. Any downtime is really a problem since it is seen directly by our customers. I would really like to do some active effort to isolate the problem, but my boss would cut my head off, if I have to stop the machine. The firmware is not current, but according to Dell's web site I should stop almost every running service on the machine before upgrading the firmware, and in this case I would again have to watch out for my head. I do really care to provide accurate bug reports to OS projects that I use (I would guess that 90 % of my reports lead to a quick fix), but in this case I do have to make an exception and keep the machine running. Thanks, Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Random server reboot after update to CentOS 5.3
Epilogue: I've tried to disable TSO (ethtool -K eth0 tso off), as was suggested on the poweredge list. This did not help. I've configured the machine to start with the 5.2 kernel in /boot/grub/grub.conf, changing the default. It has been running for 6 1/2 days, now. I would say that this helped and is what I would suggest to others experiencing the same problem, right now. Thus, current running kernel is 2.6.18-92.1.10.el5xen. Regards and thanks for all replies, Peter Peter Hopfgartner wrote: Dear ML We upgraded a Dell Poweredge PE 1950 Server the 8th of May. Since then the server rebooted 3 times without external cause (it is located in a server farm with redundant power supply etc.). Looking at the servers monitoring infrastructure with Dell's own OpenManage tools, I get strange errors: [r...@servernew ~]# omreport system esmlog () Severity : Critical Date and Time : Mon May 11 17:46:59 2009 Description : System Software event: run-time critical stop was asserted Severity : Critical Date and Time : Fri May 15 21:07:57 2009 Description : System Software event: run-time critical stop was asserted Severity : Critical Date and Time : Wed May 20 21:00:53 2009 Description : System Software event: run-time critical stop was asserted (...) This class of errors never happened before in over a year that the server is running. There is no mention of any anomaly, except the boot messages itself, in /var/log/messages. The server runs the 64 bit flavor of CentOS hosting some XEN virtual machines and some PostgreSQL and MySQL databases. It run without any issues with CentOS 5.1 and 5.2. I interpreted these issues as some kernel/software related problem, but do not know how to make a more accurate diagnosis of the problem. Can anybody give me some hint? Has anybody had some similar issue? Regards, Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Intel Atom systems?
I had some of them, too, running for years. The only problem I incurred was with a Flash memory that degraded after a while, so I would really recommend some of thoses industrial grade flash memories. The hardware is superb. Peter nate wrote: Bill Campbell wrote: Any comments on CentOS 5 on Intel Atom CPUs? I need to build a couple of inexpensive systems that will be used primarily as gateway/firewall systems with OpenVPN, and need recommendations in reliable hardware platforms. These will need two NICs. Go with Soekris, they are built for that purpose. You can even get an SSL accelerator card for them. Mine has a ~500Mhz AMD Geode CPU, 512MB ram, I added a 1GB CF card, it has 4x100Mbit NICs, it has a slot for a PCI device, I put a bracket with another serial port on there to hook to a UPS, has a USB port, and a serial port for console access, draws a tiny amount of power. I don't consider linux a good platform for firewall or VPN devices myself, I use OpenBSD, with pf. I have an OpenVPN from my soekris box at home to my co-located server(runs Debian), have had it hooked up for almost a year now, works great. I don't need the SSL acceleration card as my commit rate at the colo is only 1Mbit, so I don't want to push a lot of traffic. http://www.soekris.com/net5501.htm These things are designed from the ground up to be firewall/VPN appliances(low end mind you, your not gonna be pushing gigabits of traffic through them). The CPU on mine doesn't even have a heat sink. nate ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Random server reboot after update to CentOS 5.3
William L. Maltby wrote: On Thu, 2009-05-21 at 20:07 +0200, Ralph Angenendt wrote: Lanny Marcus wrote: It would have been helpful, if the error message told you which system software. :-) The Upgrade from 5.2 to 5.2 seems to have been problematic for some people on this list. When you did the Upgrade, did you follow this sequence, per the CentOS 5.3 Release Notes? yum clean all yum update glibc\* yum update If not, that may or may not have anything to do with the reboots and error messages you have received. No, it would not have to do anything with the spontaneous reboots. The problem with glibc only concerns rpm, as the release notes clearly state. Since nobody else mentioned it to th OP, ... Let us not forget that often the hardware chooses to act up around the same time that some kind of (software) upgrade is performed. I've wasted a lot of time in the past *assuming* that because the hardware was rock-solid in the past, it must have been some change (I made) to the software. I suggest running diagnostics, or manually re-seating everything (especially if you had occasion to move the unit or open it recently). Memory used to age, does it still? Memtest*86 might be in order. The machine has ECC RAM and extensive hardware logging build in. It should be quite uncommon that the build in server logging would not notice a memory failure. The server diagnostics from Dell do not show any hardware failure at all, only a software problem. In my experience, memory problems lead in most cases to application instability, but I've never seen a reboot like this, that leaves absolutely no trace in the Linux logs. Taking the reboot, that happened tonight: The Dell utility says: Severity : Critical Date and Time : Thu May 21 21:16:16 2009 Description : System Software event: run-time critical stop was asserted From /var/log/messages: May 21 10:58:38 servernew auditd[18962]: Init complete, auditd 1.7.7 listening f or events (startup state enable) May 21 21:18:58 servernew syslogd 1.4.1: restart. May 21 21:18:58 servernew kernel: klogd 1.4.1, log source = /proc/kmsg started. May 21 21:18:58 servernew kernel: Bootdata ok (command line is ro root=LABEL=/) May 21 21:18:58 servernew kernel: Linux version 2.6.18-128.1.10.el5xen (mockbuil d...@builder10.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-44)) #1 SMP T hu May 7 11:07:18 EDT 2009 May 21 21:18:58 servernew kernel: BIOS-provided physical RAM map: Reassuming: nothing happens for hours and then, zack!, boom!, the server restarts. Regards, Peter Ralph snip sig stuff HTH -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Random server reboot after update to CentOS 5.3
Ralph Angenendt wrote: Lanny Marcus wrote: It would have been helpful, if the error message told you which system software. :-) The Upgrade from 5.2 to 5.2 seems to have been problematic for some people on this list. When you did the Upgrade, did you follow this sequence, per the CentOS 5.3 Release Notes? yum clean all yum update glibc\* yum update If not, that may or may not have anything to do with the reboots and error messages you have received. No, it would not have to do anything with the spontaneous reboots. The problem with glibc only concerns rpm, as the release notes clearly state. Ralph ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Would it make sense to install the kernel from CentOS 5.2? Any contraindications? Regards, Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Random server reboot after update to CentOS 5.3
JohnS wrote: On Fri, 2009-05-22 at 09:44 +0200, Peter Hopfgartner wrote: snip Would it make sense to install the kernel from CentOS 5.2? Any contraindications? Regards, Peter --- Now why in the world would you want to do that??? You running 5.3 as per your earlier post and your uname shows you running the Xen Kernel. Always run the newest kernel *unless* there are very good reasons not to and I do not see that for your situation. Use the latest 5.3 NON Xen Kernel to test it with. A random kernel reboot on a production machine is a good reason, at least from my POV. It run fine for months with 5.2 and has now problems running with 5.3. If it is not able to run XEN, then I have to trash the whole thing, since the ASp services hosten on the machine are within XEN guests. No XEN - no business. And id DID run fine before the update. My sejustion is unplug everything hooked to it but the power and network cabling. Open it up while it is running, and shake the cables lightly ( don't jerk on them). External disk array, unplug it also. USB floppies and cd drives unplug emmm all. Is it under a heavy load? High cpu usage? Some times when there is a power supply on the verge of dying you don't really know until disk I/O climbs real high thus pulling loads of wattage. Pentium 4 and up cpus are bad about this also. No heavy load, it crashes even at times when tere is almost noload at all. The power supplies are rwedundand and hardware monitoring tells me they are both fine, as is the rest of the hardware of the machine. Run memtest86 for a few hours not just a min or two and say ahh it's ok. It takes time. Is there gaps in your log files like white space? No gaps. Simply the machine restarts at a given moment. No shutdown, no traces of a kernel panic Hardware raid controller updated to latest firmware release? Indeed, updating firmware and maybe some drivers from Dell's support site will be the next actions. Ok I guess others can tack onto my list here as well.I wouldn't get to discouraged because sometimes it can take days to find the problem. Thank you for the infos, Peter ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Random server reboot after update to CentOS 5.3
The guys on the Dell PowerEdge ML seem to be attracted by the idea that it is a driver problem of the network adapter. In this case, lspci gives me: 09:00.0 Ethernet controller: Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet (rev 12) Does this match your adapter? Regards, Peter Mathew S. McCarrell wrote: Actually, I've also been experience this issue on a two identical custom built systems running 5.3 x64 with Xen. I experienced the issue under the same kernel that Peter is running and the first kernel released with 5.3. In my particular instance, I'm attributing these random crashes to hardware problems since I'm only experiencing the issues on these two systems and not an older Dell PowerEdge 850 which is set up with the same software configuration. Matt -- Mathew S. McCarrell Clarkson University '10 mccar...@gmail.com mailto:mccar...@gmail.com mccar...@clarkson.edu mailto:mccar...@clarkson.edu On Fri, May 22, 2009 at 10:26 AM, Michael A. Peters mpet...@mac.com mailto:mpet...@mac.com wrote: JohnS wrote: My sejustion is unplug everything hooked to it but the power and network cabling. Open it up while it is running, and shake the cables lightly ( don't jerk on them). External disk array, unplug it also. USB floppies and cd drives unplug emmm all. Is it under a heavy load? High cpu usage? Some times when there is a power supply on the verge of dying you don't really know until disk I/O climbs real high thus pulling loads of wattage. That's my guess. I'd swap out the power supply. My personal experience with ram issues is either kernel panic or filesystem funnyness (sometimes resulting in filesystems being remounted read only). My experience with disk I/O issues is that forcing fsck reveals filesystem errors with high frequency. Rebooting machines in my experience is almost always a failing power supply (or faulty power source - check your UPS, when they start to go bad they can cause issues). If it was a kernel issue, I suspect more people would be experiencing (unless it is caused by a third party kmod) ___ CentOS mailing list CentOS@centos.org mailto:CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Random server reboot after update to CentOS 5.3
Dear ML We upgraded a Dell Poweredge PE 1950 Server the 8th of May. Since then the server rebooted 3 times without external cause (it is located in a server farm with redundant power supply etc.). Looking at the servers monitoring infrastructure with Dell's own OpenManage tools, I get strange errors: [r...@servernew ~]# omreport system esmlog () Severity : Critical Date and Time : Mon May 11 17:46:59 2009 Description : System Software event: run-time critical stop was asserted Severity : Critical Date and Time : Fri May 15 21:07:57 2009 Description : System Software event: run-time critical stop was asserted Severity : Critical Date and Time : Wed May 20 21:00:53 2009 Description : System Software event: run-time critical stop was asserted (...) This class of errors never happened before in over a year that the server is running. There is no mention of any anomaly, except the boot messages itself, in /var/log/messages. The server runs the 64 bit flavor of CentOS hosting some XEN virtual machines and some PostgreSQL and MySQL databases. It run without any issues with CentOS 5.1 and 5.2. I interpreted these issues as some kernel/software related problem, but do not know how to make a more accurate diagnosis of the problem. Can anybody give me some hint? Has anybody had some similar issue? Regards, Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Random server reboot after update to CentOS 5.3
Ian Forde wrote: On Thu, 2009-05-21 at 15:13 +0200, Peter Hopfgartner wrote: Dear ML We upgraded a Dell Poweredge PE 1950 Server the 8th of May. Since then the server rebooted 3 times without external cause (it is located in a server farm with redundant power supply etc.). Looking at the servers monitoring infrastructure with Dell's own OpenManage tools, I get strange errors: (...) The server runs the 64 bit flavor of CentOS hosting some XEN virtual machines and some PostgreSQL and MySQL databases. It run without any issues with CentOS 5.1 and 5.2. I interpreted these issues as some kernel/software related problem, but do not know how to make a more accurate diagnosis of the problem. Can anybody give me some hint? Has anybody had some similar issue? Hmm... you *definitely* want to take this one to the Dell Linux list. Ok, done that: http://lists.us.dell.com/pipermail/linux-poweredge/2009-May/039257.html Having said that, I did some googling for: omreport run-time critical stop was asserted and found only one hit for someone that faced it in April 2007. Ok, now there are two in google search results! And Dell told them that it may have been software. I'd start there. Some additional questions: What version of CentOS? What kernel version? What version of the Dell tools? Indeed, since the only major thing that changed was an yum update passing from 52. to 5.3, this is what I would guess, too. But my craft stops here. -I ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos CentOS: 5.3 + PostgreSQL from CentOS Testing and some home build GIS package uname -a: Linux servernew 2.6.18-128.1.10.el5xen #1 SMP Thu May 7 11:07:18 EDT 2009 x86_64 x86_64 x86_64 GNU/Linux [r...@servernew ~]# omreport about Product name : Server Administrator Install Core (subscription) Version : 5.5.0 Copyright: Copyright (C) Dell Inc. 1995-2008. All rights reserved. Company : Dell Inc. Regards, Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] php 5.2
Jim Perrin wrote: On Sat, Mar 14, 2009 at 10:39 PM, Melinda Odom i...@designhosting.biz wrote: Hi, Is there any news about CentOS 5.2 updating to php 5.2? There have been packages for php 5.2 in the Centos Testing repository for a while now. They work fine (for me at least), it's just that very few folks are reporting the functionality, so they aren't moving into centosplus or more common repositories. See http://wiki.centos.org/AdditionalResources/Repositories for more information It seems to me that feedback to packages in testing are getting lost. I sent mine for PHP and PostgreSQL (both run really fine on a number of our servers), but there is no reply and no reaction. Maybe a Wiki-Page or a ticket would be a better place to gather feedback then the L. Regards, Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Status of PostgreSQL and PHP in Testing
Peter Hopfgartner wrote: Dear CentOS developers I would like to have ask some questions about the PostgreSQL and PHP packages in the current Testing repository for CentOS 5. In http://wiki.centos.org/QaWiki/TestingRepo there is a note, that the testing period is about 3 weeks. Currently, the PostgreSQL and PHP packages in http://dev.centos.org/centos/5/testing/SRPMS were created in September 08. Do the developers need more feedback about the packages in testing? Is there something (a wiki page, a ticket in the bug tracker or something else) where the feedback can be collected? I've tried the packaged on our development server, an Opteron server with a curent CentOS5-x86_64 installation with 9 GB of postgresql data, a good part of which geografical data. Basically, until now everything runs as expected. No problems with the selected packages. Regards, Peter Is there a testing plan for the packages (works with this and that software, upgrade from base works)? What is the best way I can help? Simply sending feedback to the ML? Is there a kind of policy for the upstream version, something like: version is expected to be in the next major Red Hat release, must be part of Upstream Web Stack or another Upstream product. Casting this to a concrete question: Can upgrades to PHP 5.2.8 or PostgreSQL 8.2.11 be expected to happen. And is there already a concrete plan to move those 2 packages to Plus [http://mirror.centos.org/centos/5/centosplus/]? Regards and thank you for this great distribution. The more I work with it the more I like it. Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Status of PostgreSQL and PHP in Testing
Dear CentOS developers I would like to have ask some questions about the PostgreSQL and PHP packages in the current Testing repository for CentOS 5. In http://wiki.centos.org/QaWiki/TestingRepo there is a note, that the testing period is about 3 weeks. Currently, the PostgreSQL and PHP packages in http://dev.centos.org/centos/5/testing/SRPMS were created in September 08. Do the developers need more feedback about the packages in testing? Is there something (a wiki page, a ticket in the bug tracker or something else) where the feedback can be collected? Is there a testing plan for the packages (works with this and that software, upgrade from base works)? What is the best way I can help? Simply sending feedback to the ML? Is there a kind of policy for the upstream version, something like: version is expected to be in the next major Red Hat release, must be part of Upstream Web Stack or another Upstream product. Casting this to a concrete question: Can upgrades to PHP 5.2.8 or PostgreSQL 8.2.11 be expected to happen. And is there already a concrete plan to move those 2 packages to Plus [http://mirror.centos.org/centos/5/centosplus/]? Regards and thank you for this great distribution. The more I work with it the more I like it. Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] PHP 5.2.x rpm for Centos 5? (any news)
Building the PHP source rpms from Fedora 10 should work fine. We use them for our servers. Rebuilding source RPMs is extremly easy. Regards, Peter mbneto wrote: I've searched the archives and found a post last march about a rpm version of php for centos. Any news about it? Is it still in testing? Any known issues? Where do I get it? Thanks. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] CentOS, PHP, Basic GIS
Dear Micheal, are there any good reasons not to use a normal cartesian grid? I can no tremember any GIS software that can use haxagonal tiles as a raster. Anyway, there is quite a lot of GIS software that you can obtain via EPEL [http://fedoraproject.org/wiki/EPEL]. In case you want to publish geographical informations, do yourself a favor and use some of the many excellent tools out there, have a look at http://www.osgeo.org. A good part of the world's leading open source GIS people works on those projects. Some, trying to summarize: If you want to keep your data on a database, go with PostgreSQL and PostGIS or SQLLite with it's spatial extensions. If you want to work with desktop applications, have a look at QGIS and, at a more advanced level, GRASS. If you want to publish your data on the web and feel more inclibned to PHP then to JAVA have a look at MapServer for creating the rendered images of your geographical data and to OpenLayers or Mapbender or eventulally p-mapper for publishing the rendered images on the web. These are the tools that we been are using here for years and your can go any distance with them. Regards, Peter Michael A. Peters wrote: I have no experience with GIS whatsoever. I really know squat about it. I'm currently working on a project to plot locality data for wildlife on a map of Shasta County. This is for a new herpetological club that hopes to track strength of our local herp populations, since it seems evident that in the last 20 years we lost one species of frog and are close to losing another (probably less than 100 left and they don't seem to be successfully breeding) and the declines were known, but the extent of the declines was not known well enough until it was too late. We want to try and prevent that with other species in our county by keeping records of where they currently are and where they use to be but are no longer found. When we see what appears to be shrinking range, we can investigate and if need be, request surveys by wildlife management before it is too late. Basically - the data will be plotted as a grid of regular hexagons. When locality information (museum record or photo voucher record in our own database) exists, the hexagon the record sits in gets drawn a pretty color (depending on type and age of records). I have it working on a raster (jpg) map where I guessed the latitude/longitude borders - working well enough with sample data that I know my php code works, but while it is ballpark accurate I need to do it with maps of known values. Quick and dirty option - obtain (possibly pay for) a large (at least 2k pixels wide) raster map with known lat/lon borders that has the county outline, major lakes and rivers, nothing else. The maps could be made and then resized for web view. The major problem with that model is that drawing colored hexagons near the county border and near rivers will make it more difficult to see them, thus making it harder to interpret the map. What I would prefer to do - Draw my data hexagons on a blank slate [ via imagecreate(width,height) function), then draw the county border on top of that, and then on top of that either draw the lakes/rivers and/or basic topographical lines. My preference obviously includes getting data sets for those things (county border, lakes/rivers, topography) in a format that I can parse with php to draw them with gd. My county does have some GIS data available: http://www.shastagis.co.shasta.ca.us/gissearch/search_new.aspx I don't have a clue how to get that data into format useful for drawing with gd via php. Anyone have experience with this? Can anyone recommend a (preferably free) Linux GIS program that works on CentOS that could potentially convert data files into format useful for drawing with gd? I don't need to get fancy with zoom, rotate, etc. capabilities - just a basic static flat map output. Thanks for any suggestions. I may try to find a GIS for dummies type book, though I've generally not been fond of dummy books, I kind of feel like one when it comes to GIS. ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Re: [CentOS] Problems compiling PostgreSQL package from FC8 on CentOS 5
Pintér Tibor wrote: http://yum.pgsqlrpms.org/reporpms/repoview/pgdg-centos.html t ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos Hey, this would save me a lot of time. Do they differ significantly from the Fedora/RedHat packages for things like directory layout and default configuration? Thanks, Peter -- Dott. Peter Hopfgartner R3 GIS Srl - GmbH Via Johann Kravogl-Str. 2 I-39012 Meran/Merano (BZ) Email: peter.hopfgart...@r3-gis.com Tel. : +39 0473 494949 Fax : +39 0473 069902 www : http://www.r3-gis.com ___ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
[CentOS] Problems compiling PostgreSQL package from FC8 on CentOS 5
Dear CentOS list
we are a small software company making mostly web driven GIS software.
We started to simplify out sysadmin life making RPM packages of most of
the GIS software stack. For a dependency issue we had to abandon the
upstream 8.1 PostgreSQL and install at least a 8.2 version. Taking the
package from Fedora 8 and rebuilding it for x86_64 went smoothly.
Unfortunatly the same is not true for i386. It stops with:
checking for collateindex.pl... no
checking for sgmlspl... no
checking thread safety of required library functions... no
configure: error: thread test program failed
This platform is not thread-safe. Check the file 'config.log' for the
exact reason.
You can use the configure option --enable-thread-safety-force to force
threads to be enabled. But you must then run the program in
src/test/thread and add locking function calls to your applications to
guarantee thread safety.
error: Bad exit status from
/home/peter.hopfgartner/rpmbuild/tmp/rpm-tmp.77591 (%build)
RPM build errors:
Bad exit status from
/home/peter.hopfgartner/rpmbuild/tmp/rpm-tmp.77591 (%build)
The temporary file is:
#!/bin/sh
RPM_SOURCE_DIR=/home/peter.hopfgartner/rpmbuild/SOURCES
RPM_BUILD_DIR=/home/peter.hopfgartner/rpmbuild/BUILD
RPM_OPT_FLAGS=-O2 -g -march=i386 -mcpu=i686
RPM_ARCH=i386
RPM_OS=linux
export RPM_SOURCE_DIR RPM_BUILD_DIR RPM_OPT_FLAGS RPM_ARCH RPM_OS
RPM_DOC_DIR=/usr/share/doc
export RPM_DOC_DIR
RPM_PACKAGE_NAME=postgresql
RPM_PACKAGE_VERSION=8.2.11
RPM_PACKAGE_RELEASE=1
export RPM_PACKAGE_NAME RPM_PACKAGE_VERSION RPM_PACKAGE_RELEASE
RPM_BUILD_ROOT=/home/peter.hopfgartner/rpmbuild/tmp/postgresql-8.2.11-1-root
export RPM_BUILD_ROOT
set -x
umask 022
cd /home/peter.hopfgartner/rpmbuild/BUILD
cd postgresql-8.2.11
CFLAGS=${CFLAGS:--O2 -g -march=i386 -mcpu=i686} ; export CFLAGS
CXXFLAGS=${CXXFLAGS:--O2 -g -march=i386 -mcpu=i686} ; export CXXFLAGS
# Strip out -ffast-math from CFLAGS
CFLAGS=`echo $CFLAGS|xargs -n 1|grep -v ffast-math|xargs -n 100`
CFLAGS=${CFLAGS:--O2 -g -march=i386 -mcpu=i686} ; export CFLAGS ;
CXXFLAGS=${CXXFLAGS:--O2 -g -march=i386 -mcpu=i686} ; export CXXFLAGS ;
FFLAGS=${FFLAGS:--O2 -g -march=i386 -mcpu=i686} ; export FFLAGS ;
./configure --host=i686-redhat-linux-gnu --build=i686-redhat-linux-gnu \
--target=i386-redhat-linux \
--program-prefix= \
--prefix=/usr \
--exec-prefix=/usr \
--bindir=/usr/bin \
--sbindir=/usr/sbin \
--sysconfdir=/etc \
--datadir=/usr/share \
--includedir=/usr/include \
--libdir=/usr/lib \
--libexecdir=/usr/libexec \
--localstatedir=/var \
--sharedstatedir=/usr/com \
--mandir=/usr/share/man \
--infodir=/usr/share/info --disable-rpath \
--with-perl \
--with-tcl \
--with-tclconfig=/usr/lib \
--with-python \
--with-openssl \
--with-pam \
--with-krb5 \
--enable-nls \
--enable-thread-safety \
--sysconfdir=/etc/sysconfig/pgsql \
--datadir=/usr/share/pgsql \
--with-docdir=/usr/share/doc
make all
make -C contrib all
make -C contrib/xml2 all
# Have to hack makefile to put correct path into tutorial scripts
sed s|C=\`pwd\`;|C=/usr/lib/pgsql/tutorial;| src/tutorial/Makefile
src/tutorial/GNUmakefile
make -C src/tutorial NO_PGXS=1 all
rm -f src/tutorial/GNUmakefile
pushd src/test/regress
make all
make MAX_CONNECTIONS=5 check
make clean
popd
pushd src/test/regress
make RPMTESTING=1 all
popd
PYTHON=/usr/bin/python
python_version=`${PYTHON} -c import sys; print sys.version[:3]`
python_prefix=`${PYTHON} -c import sys; print sys.prefix`
python_includespec=-I${python_prefix}/include/python${python_version}
pushd PyGreSQL
gcc $CFLAGS -fpic -shared -o _pgmodule.so ${python_includespec}
-I../src/interfaces/libpq -I../src/include -L../src/interfaces/libpq
-lpq pgmodule.c
popd
pushd Pgtcl
# pgtcl's configure only handles one include directory :-(
./configure --prefix=/usr \
--libdir=/usr/lib \
--with-tcl=/usr/lib \
--with-postgres-include=../src/interfaces/libpq -I../src/include \
--with-postgres-lib=../src/interfaces/libpq
# note: as of pgtcl 1.5.2, its makefile is not parallel-safe
make all
popd
exit 0
Does anybody have any hint how to proceed?
Regards,
Peter
--
Dott. Peter Hopfgartner
R3 GIS Srl - GmbH
Via Johann Kravogl-Str. 2
I-39012 Meran/Merano (BZ)
Email: peter.hopfgart...@r3-gis.com
Tel. : +39 0473 494949
Fax : +39 0473 069902
www : http://www.r3-gis.com
___
CentOS mailing list
CentOS@centos.org
http://lists.centos.org/mailman/listinfo/centos
