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OT: Video Surveillance SW on CentOS
by Lanny Marcus 19 May '11

19 May '11

I suggested to our Homeowners Association that we begin a Private Forum (phpBB) and web site. That suggestion has been well received and we will proceed with that. Now, I have become involved in a much more complex and important project, which is Video Surveillance, for the entrance to our subdivision. I Googled and found two (2) things for Linux that seem to be OK: (a) ZoneMinder http://www.zoneminder.com/ (b) Motion http://www.lavrsen.dk/foswiki/bin/view/Motion/WebHome Both are licensed under the GPL. Motion is available from the RPMForge Repository, which is a big "plus", for installation, upgrades and removal. ZoneMinder seems to be a much more active project. I would appreciate Feedback, from anyone who has used either or both of these programs. Pros and Cons? Also, if anyone has other Software to recommend, to run on CentOS, that information will be appreciated. The idea is to have at least two (2) cameras. One for Arrivals and One for Departures. ------------------------------------------------------ TIA! Lanny Our Computer2.com Domain Name is For Sale, on Sedo.com

4 5

Centos 5.6 kernel errors
by Matt Keating 19 May '11

19 May '11

Hi guys, Is anyone else having kernel issues with CentOS 5.6? I cant get it stable on as a LAMP platform. Everything is up-to-date and yet I'm running into major problems. How do I make sense of these kernel errors? Any help will be greatly appreciated, as I'm now had to roll back to an old copy of CentOS to keep my systems stable. Random Cron: 14857 kernel: Oops: 0003 [#3] 14857 kernel: SMP 14857 kernel: CPU: 0 14857 kernel: EIP is at pgd_free+0x104/0x140 14857 kernel: eax: 00000000 ebx: 00000000 ecx: 00000400 edx: 80000003 14857 kernel: esi: e8caa000 edi: e8caa000 ebp: e8cffd68 esp: e8cffd48 14857 kernel: ds: 007b es: 007b ss: 0069 14857 kernel: Process crond (pid: 2620, threadinfo=e8cfe000 task=e9419550) 14857 kernel: Stack: <0>e8caa000 00000000 00000003 e8ca3c44 e8ca6018 e8c6f740 e8c6f788 e8c6f740 14857 kernel: e8cffd7c c011bd9b e8ca6000 e8c6f788 e8c6f740 e8cffd90 c011be50 e8c6f740 14857 kernel: e8cffde8 00007ff0 e8cffe20 c0170a8a e8c6f740 e8c6f740 c030b547 e8cffdb8 14857 kernel: Call Trace: 14857 kernel: [<c01058bd>] show_stack_log_lvl+0xcd/0x120 14857 kernel: [<c0105abb>] show_registers+0x1ab/0x240 14857 kernel: [<c0105dc1>] die+0x111/0x240 14857 kernel: [<c01130a7>] do_page_fault+0x5f7/0x931 14857 kernel: [<c01052ab>] error_code+0x2b/0x30 14857 kernel: [<c011bd9b>] __mmdrop+0x1b/0x50 14857 kernel: [<c011be50>] mmput+0x80/0xa0 14857 kernel: [<c0170a8a>] flush_old_exec+0x1ba/0xb30 14857 kernel: [<c0191e1f>] load_elf_binary+0x26f/0x1780 14857 kernel: [<c0171602>] search_binary_handler+0x92/0x240 14857 kernel: [<c0171923>] do_execve+0x173/0x215 14857 kernel: [<c0103892>] sys_execve+0x42/0xa0 14857 kernel: [<c0105119>] syscall_call+0x7/0xb 14857 kernel: Code: e1 0c 25 ff 0f 00 00 09 c1 89 ce 83 ce 01 81 ee 01 00 00 40 31 db 89 5c 24 04 89 f7 89 34 24 e8 53 eb ff ff 31 c0 b9 00 04 00 00 <f3> ab a1 e4 ec 3a c0 89 74 24 04 89 04 24 e8 39 dc 04 00 8b 45 Random while updating a package with yum: 14857 kernel: Oops: 0003 [#4] 14857 kernel: SMP 14857 kernel: CPU: 0 14857 kernel: EIP is at pgd_free+0x104/0x140 14857 kernel: eax: 00000000 ebx: 00000000 ecx: 00000400 edx: 80000002 14857 kernel: esi: e8545000 edi: e8545000 ebp: e8c8bd68 esp: e8c8bd48 14857 kernel: ds: 007b es: 007b ss: 0069 14857 kernel: Process yum (pid: 2721, threadinfo=e8c8a000 task=e9f65550) 14857 kernel: Stack: <0>e8545000 00000000 00000003 e854c1d8 e8546018 e8c6f040 e8c6f088 e8c6f040 14857 kernel: e8c8bd7c c011bd9b e8546000 e8c6f088 e8c6f040 e8c8bd90 c011be50 e8c6f040 14857 kernel: e8c8bde8 00007ff0 e8c8be20 c0170a8a e8c6f040 e8c6f040 c030b547 e8c8bdb8 14857 kernel: Call Trace: 14857 kernel: [<c01058bd>] show_stack_log_lvl+0xcd/0x120 14857 kernel: [<c0105abb>] show_registers+0x1ab/0x240 14857 kernel: [<c0105dc1>] die+0x111/0x240 14857 kernel: [<c01130a7>] do_page_fault+0x5f7/0x931 14857 kernel: [<c01052ab>] error_code+0x2b/0x30 14857 kernel: [<c011bd9b>] __mmdrop+0x1b/0x50 14857 kernel: [<c011be50>] mmput+0x80/0xa0 14857 kernel: [<c0170a8a>] flush_old_exec+0x1ba/0xb30 14857 kernel: [<c0191e1f>] load_elf_binary+0x26f/0x1780 14857 kernel: [<c0171602>] search_binary_handler+0x92/0x240 14857 kernel: [<c0171923>] do_execve+0x173/0x215 14857 kernel: [<c0103892>] sys_execve+0x42/0xa0 14857 kernel: [<c0105119>] syscall_call+0x7/0xb 14857 kernel: Code: e1 0c 25 ff 0f 00 00 09 c1 89 ce 83 ce 01 81 ee 01 00 00 40 31 db 89 5c 24 04 89 f7 89 34 24 e8 53 eb ff ff 31 c0 b9 00 04 00 00 <f3> ab a1 e4 ec 3a c0 89 74 24 04 89 04 24 e8 39 dc 04 00 8b 45 While serving httpd pages: May 19 12:19:19 ip-10-234-90-180 kernel: Unable to handle kernel paging request at virtual address e6579000 May 19 12:19:19 ip-10-234-90-180 kernel: printing eip: May 19 12:19:19 ip-10-234-90-180 kernel: c01123c4 May 19 12:19:19 ip-10-234-90-180 kernel: 00589000 -> *pde = 00000003:b9f9a027 May 19 12:19:19 ip-10-234-90-180 kernel: 0058a000 -> *pme = 00000003:146e0067 May 19 12:19:19 ip-10-234-90-180 kernel: 005c4000 -> *pte = 80000008:10392063 May 19 12:19:19 ip-10-234-90-180 kernel: Oops: 0003 [#1] May 19 12:19:19 ip-10-234-90-180 kernel: SMP May 19 12:19:19 ip-10-234-90-180 kernel: Modules linked in: fuse dm_mirror dm_multipath dm_mod May 19 12:19:19 ip-10-234-90-180 kernel: CPU: 0 May 19 12:19:19 ip-10-234-90-180 kernel: EIP: 0061:[<c01123c4>] Tainted: GF VLI May 19 12:19:19 ip-10-234-90-180 kernel: EFLAGS: 00010246 (2.6.16-xenU #1) May 19 12:19:19 ip-10-234-90-180 kernel: EIP is at pgd_free+0x104/0x140 May 19 12:19:19 ip-10-234-90-180 kernel: eax: 00000000 ebx: 00000000 ecx: 00000400 edx: 80000008 May 19 12:19:19 ip-10-234-90-180 kernel: esi: e6579000 edi: e6579000 ebp: c2f95f00 esp: c2f95ee0 May 19 12:19:19 ip-10-234-90-180 kernel: ds: 007b es: 007b ss: 0069 May 19 12:19:19 ip-10-234-90-180 kernel: Process httpd (pid: 8267, threadinfo=c2f94000 task=d78a3a70) May 19 12:19:19 ip-10-234-90-180 kernel: Stack: <0>e6579000 00000000 00000003 c2039a1c d75c7018 ed181200 ed181248 d78a3a70 May 19 12:19:19 ip-10-234-90-180 kernel: c2f95f14 c011bd9b d75c7000 ed181248 ed181200 c2f95f28 c011be50 ed181200 May 19 12:19:19 ip-10-234-90-180 kernel: ed181200 ed181234 c2f95f44 c011fdd0 ed181200 ed181200 c2f94000 d78a3a70 May 19 12:19:19 ip-10-234-90-180 kernel: Call Trace: May 19 12:19:19 ip-10-234-90-180 kernel: [<c01058bd>] show_stack_log_lvl+0xcd/0x120 May 19 12:19:19 ip-10-234-90-180 kernel: [<c0105abb>] show_registers+0x1ab/0x240 May 19 12:19:19 ip-10-234-90-180 kernel: [<c0105dc1>] die+0x111/0x240 May 19 12:19:19 ip-10-234-90-180 kernel: [<c01130a7>] do_page_fault+0x5f7/0x931 May 19 12:19:19 ip-10-234-90-180 kernel: [<c01052ab>] error_code+0x2b/0x30 May 19 12:19:19 ip-10-234-90-180 kernel: [<c011bd9b>] __mmdrop+0x1b/0x50 May 19 12:19:19 ip-10-234-90-180 kernel: [<c011be50>] mmput+0x80/0xa0 May 19 12:19:19 ip-10-234-90-180 kernel: [<c011fdd0>] exit_mm+0x80/0x100 May 19 12:19:19 ip-10-234-90-180 kernel: [<c0120bc3>] do_exit+0xf3/0x8f0 May 19 12:19:19 ip-10-234-90-180 kernel: [<c01213fb>] do_group_exit+0x3b/0xd0 May 19 12:19:19 ip-10-234-90-180 kernel: [<c01214a5>] sys_exit_group+0x15/0x20 May 19 12:19:19 ip-10-234-90-180 kernel: [<c0105119>] syscall_call+0x7/0xb May 19 12:19:19 ip-10-234-90-180 kernel: Code: e1 0c 25 ff 0f 00 00 09 c1 89 ce 83 ce 01 81 ee 01 00 00 40 31 db 89 5c 24 04 89 f7 89 34 24 e8 53 eb ff ff 31 c0 b9 00 04 00 00 <f3> ab a1 e4 ec 3a c0 89 74 24 04 89 04 24 e8 39 dc 04 00 8b 45 May 19 12:19:19 ip-10-234-90-180 kernel: <1>Fixing recursive fault but reboot is needed! Thanks, Matt

2 3

KVM vs ESXi
by Drew 19 May '11

19 May '11

Morning Everyone, I'm busy doing a rebuild of my home server and am tossing between VMware and KVM for this build. I already have experience with ESX, we use it at work, but I'm debating trying out KVM for a while. The server itself is a budget build using a Supermicro X8SAX board w/ i7-950 & 12GB RAM, LSI 3081 SAS RAID (1068e based), rolled into a NorcoTek 16 Bay SAS case. Not fancy but also decent enough for home use. I don't expect high performance out of this unit so unless the gear is hopelessly outclassed, I'm not in a position to entertain upgrading. Right now forking over $1000-$1500 on a $2000 system for a pair of higher end LSI/3ware/Acreca controller just isn't in the budget. ;-) My question to everyone are these: -How well does KVM support Windows Guests? I'm already running a Server 2008r2 and WHS 2011 (based on 08r2) machines at home which I want to consolidate into this box. -Does KVM have a concept of virtual switches and and are they tied to physical NICs? ESXi allows me to create a vSwitch that isn't tied to a physical NIC so I can create a DMZ that exists solely within the host system. I'd like to replicate that if possible. I know these are probably questions that I could answer on my own by RTFM but I have already, and never really got the answers I needed. Pretty much every how-to assumed I'd be doing basic stuff and not dabbling with advanced stuff. I also know that what's written doesn't always match what's in the field and you folks are the field. And with CentOS 6 just around the corner (no flame wars please, my nomex pants are at the cleaners :-P ) I'm wanting to know if it's worth holding off another month or so on finalizing my build. Thanks, -- Drew "Nothing in life is to be feared. It is only to be understood." --Marie Curie

7 6

Re: [CentOS] EL 6 rollout strategies? (Scientific Linux)
by Janne TH. Nyman 19 May '11

19 May '11

Who cares? I find it amazing that these guys still keep on building and providing considering how their "users" treat them. Team CentOS, keep your heads up. For me, you are still the best thing that happened since sliced bread. Come on, community, where is your love? My 2 pence, Janne "Janski" AKA JNixus Nyman Founder of Newman IT Solutions Ltd -----Original Message----- From: centos-request(a)centos.org Reply-to: centos(a)centos.org To: centos(a)centos.org Subject: CentOS Digest, Vol 76, Issue 16 Date: Mon, 16 May 2011 12:00:02 -0400 Re: [CentOS] EL 6 rollout strategies? (Scientific Linux)

17 30

ServerRaid Driver compatibility with Centos
by Reshiv Nayar 18 May '11

18 May '11

Hi all, Does anyone know that what driver verisons of the IBM ServeRaid family are supported by the different verisons of Centos? Many thanks & regards!

2 1

Feed a list of filenames to vim
by Jussi Hirvi 18 May '11

18 May '11

There are some googlable ways to feed a list of filenames to vim, but I stumble on weird results. With my filelist, I try to do cat list | xargs vim ...to edit the files listed in the file "list". Here's what happens: [root@lasso2 tempdir]# ls -l total 8 -rw-r--r-- 1 root root 0 May 17 18:28 a -rw-r--r-- 1 root root 0 May 17 18:28 b -rw-r--r-- 1 root root 3 May 17 18:31 c -rw-r--r-- 1 root root 12 May 17 18:43 list [root@lasso2 tempdir]# cat list ./a ./b ./c [root@lasso2 tempdir]# cat list | xargs vim 3 files to edit Vim: Warning: Input is not from a terminal Ok, so far, so good. And after this, the file a opens, as expected. However, the contents show as all uppercase. And everything I write is uppercase too. I can move to the next file (:n) even though the command shows as uppercase (:N). I cannot quit vim, however. When I do ":q", I get blank screen, and I have to close the terminal window. If I do instead cat list | xargs less ...it works as expected. And with cat list | xargs vi ...(in a fresh terminal window), the editing goes just perfect, but when I quit vi, the terminal will not show the commands I write, and the display gets garbled (no newlines etc.). What is happening? - Jussi

11 24

Re: [CentOS] Some thoughts about EL 6
by Gerhard Schneider 18 May '11

18 May '11

> Is there any bugzilla report for this? > SL or redhat? > Thx > Rainer Not from my side. I'm CentOS user - only testing 6.0 The tape issue has been discussed on the linux-scsi mailing list 6 months ago - including some fix - and there was a bug report for the Ubuntu 2.6.32 kernel. The slab issue has been discussed in the rhelv6-list in February. Sorry, but the large servers I used for testing are back in business with CentOS 5.6 after playing around for one week (it's my way to check that issues are not hardware related). Gerhard Schneider -- Gerhard Schneider Institute of Lightweight Design and e-Mail: gs(a)ilsb.tuwien.ac.at Structural Biomechanics (E317) Tel.: +43 664 60 588 3171 Vienna University of Technology / Austria Fax: +43 1 58801 31799 A-1040 Wien, Gusshausstrasse 27-29 http://www.ilsb.tuwien.ac.at/~gs/

2 1

sipwitch for Centos 5
by Dario Lesca 18 May '11

18 May '11

Hi, someone have use or rebuild sipwitch on Centos 5.x? http://www.gnu.org/software/sipwitch/ http://pkgs.org/package/sipwitch-runtime Someone know where is (if exist) a rpm for centos5? Thanks for info ... and Thanks to All for the great Work, Centos5.6 is a great S.O. server! -- Dario Lesca <d.lesca(a)solinos.it>

2 1

a hardware question
by m.roth＠5-cent.us 18 May '11

18 May '11

We need to replace several servers, quickly - four of our Dell PE 1950's died in one week. (!!!) So, we're looking around, and I was checking out IBM. I customized to what we want, and hit 'continue', and suddenly there's another $800 for a "system common planar" that's "required". Googling only finds specs with it - does anyone know what it is? I mean, it's not like it's the motherboard, right? mark

7 11

Can't build Keepalived 1.2.1 on CentOS-4
by Santi Saez 18 May '11

18 May '11

Hello, I get this error when trying to build Keepalived 1.2.1 on a CentOS-4 box: # gcc -g -O2 (..) -D_WITH_LVS_ -D_WITH_VRRP_ -c smtp.c In file included from ../include/vrrp.h:31, from ../include/smtp.h:34, from smtp.c:27: *../include/vrrp_ipaddress.h:32:27: linux/if_addr.h: No such file or directory* In file included from ../include/vrrp.h:31, from ../include/smtp.h:34, from smtp.c:27: In a CentOS-5 box 'linux/if_addr.h' file is owned by "kernel-headers" package and I can build Keepalived 1.2.1 without problems, but in CentOS-4 there is no such file, how can I solve this? thanks! Regards, -- Santi Saez http://powerstack.org/

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