Discuss January 2013

discuss@lists.centos.org

186 participants
156 discussions

How to setup RAID 5 + 1 hot spare?
by Ren Wen shan 24 Jan '13

24 Jan '13

Hello everyone, I am new to this group so please forgive me if this question has been already asked. With four identical hard drives, I want to setup RAID 5 + 1 hot spare by a fresh CentOS (6.3) installation. I have read this article ( http://www.centos.org/docs/5/html/Deployment_Guide-en-US/s1-raid-config.html) and watched this video (http://www.youtube.com/watch?v=qm3MkuTfDLw) now I have the basic ideas. However, due to my limited experience and knowledge on this area, I am still confused. To make things easier, I only need a swap and a `/' partition. Could you give me any hint on this? What should I read to get the basic knowledge? How can I setup a simple RAID 5 + hot spare? Regards, - Meatball

5 4

load balancer recommendations
by Boris Epstein 24 Jan '13

24 Jan '13

Hello all, The question is not necessarily CentOS-specific - but there are lots of bright people on here, and - quite possibly - the final implementation will be on CentOS hence I figured I'd ask it here. Here is the situation. I need to configure a Linux-based network load balancer (NLB) solution. The idea is this. Let us say I have a public facing load balancer machine with an public IP of, say, 50.50.50.50. It is to receive the traffic (let's say, HTTP traffic) and then route it to two private HTTP servers, let's say, 192.168.10.10 and 192.168.10.11. It has to have persistence - i.e., be state- and session-aware. If for whatever reason one of the servers goes down the remaining pool shares all the traffic in some fashion (be it eound robin, saturation based, whatever). We have tried Vyatta ( http://vyatta.org/ ) and ZeroShell ( http://www.zeroshell.org/ ) and both are very good but their NLB seems to be externally facing (i.e., you have several internet connections and are trying to divide your traffic between them). What we need is an "internally facing" one, if I may say so. Any advice on what may help us would be greatly appreciated. Thanks. Boris.

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CentOS-announce Digest, Vol 95, Issue 8
by centos-announce-request＠centos.org 24 Jan '13

24 Jan '13

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CEBA-2013:0183 CentOS 5 dhcp Update (Johnny Hughes) 2. CEEA-2013:0182 CentOS 5 tzdata Update (Johnny Hughes) 3. CEEA-2013:0182 CentOS 6 tzdata Update (Johnny Hughes) 4. CESA-2013:0189 Important CentOS 5 ipa-client Update (Johnny Hughes) 5. CESA-2013:0188 Important CentOS 6 ipa Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Wed, 23 Jan 2013 12:40:47 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2013:0183 CentOS 5 dhcp Update To: centos-announce(a)centos.org Message-ID: <20130123124047.GA13439(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2013:0183 Upstream details at : https://rhn.redhat.com/errata/RHBA-2013-0183.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 88b008663c1963d2bffe3a16d4e17170d5017a5bb9041e3ee3c4824248173bce dhclient-3.0.5-33.el5_9.i386.rpm 556cee1704117e8a7630e3b197633205c8bed4a167b2e3d40e2ce83845006fed dhcp-3.0.5-33.el5_9.i386.rpm ea4b62476b2349649174759296c4b1739daabcb89f440e605688245da19cde3f dhcp-devel-3.0.5-33.el5_9.i386.rpm bf6fd769cd961194ee768e1f8a57c0ad1b9c9ab7bbeca8c0f9de98ac307ac943 libdhcp4client-3.0.5-33.el5_9.i386.rpm 31156a4535677bf88ede06b60b448e62dc0d28c216320057869d3a6ea4c3736b libdhcp4client-devel-3.0.5-33.el5_9.i386.rpm x86_64: 7a1ef83e73bb262ba7931c9fc89ba9c900a0e394bf8d3a82da60b3fa4cc96283 dhclient-3.0.5-33.el5_9.x86_64.rpm 6eb11ad00c765e875a8119858d3561fd86cf65a364f3815be7122b283ae0304f dhcp-3.0.5-33.el5_9.x86_64.rpm ea4b62476b2349649174759296c4b1739daabcb89f440e605688245da19cde3f dhcp-devel-3.0.5-33.el5_9.i386.rpm 1ac71574fbc9d1fc901e47b88095c27d64647bbc16a8f174e8616e5c66396f3b dhcp-devel-3.0.5-33.el5_9.x86_64.rpm bf6fd769cd961194ee768e1f8a57c0ad1b9c9ab7bbeca8c0f9de98ac307ac943 libdhcp4client-3.0.5-33.el5_9.i386.rpm 50b91a20735c13d14c98aada04bdb8abb12c773ff392e201c3380229add46681 libdhcp4client-3.0.5-33.el5_9.x86_64.rpm 31156a4535677bf88ede06b60b448e62dc0d28c216320057869d3a6ea4c3736b libdhcp4client-devel-3.0.5-33.el5_9.i386.rpm 5d50b8365ebcf9b261276f8ad9e38db440a1d41d3a9472c4b387976ff915ef87 libdhcp4client-devel-3.0.5-33.el5_9.x86_64.rpm Source: ee79693de248e632fe2b2e9a568273aeb1bf4dd20c819c14503a46cc52766aa3 dhcp-3.0.5-33.el5_9.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Wed, 23 Jan 2013 12:42:30 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEEA-2013:0182 CentOS 5 tzdata Update To: centos-announce(a)centos.org Message-ID: <20130123124230.GA13566(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Enhancement Advisory 2013:0182 Upstream details at : https://rhn.redhat.com/errata/RHEA-2013-0182.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 2fc16e767eaea2c2e6a24fd86c82e46494c23f4142327ba45856e304b6bac821 tzdata-2012j-1.el5.i386.rpm a856c5f400fa08740bcce28059496b362ad6cb7a8babfe6cca93fd8acaa25877 tzdata-java-2012j-1.el5.i386.rpm x86_64: f83dd8e168ee4420c987dc4f44a0e2b20a617bb3c9be48cfff8e0420b042eff7 tzdata-2012j-1.el5.x86_64.rpm f266ccdc0ddd679e08c14986819ad7a699329498c1ecdc4e9a84e61877a7cbd5 tzdata-java-2012j-1.el5.x86_64.rpm Source: 93733af1ba3c9c4bfed394b1e29353b971309cc59dd0df07e54a7c274930eff9 tzdata-2012j-1.el5.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 3 Date: Wed, 23 Jan 2013 13:56:09 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEEA-2013:0182 CentOS 6 tzdata Update To: centos-announce(a)centos.org Message-ID: <20130123135609.GA16684(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Enhancement Advisory 2013:0182 Upstream details at : https://rhn.redhat.com/errata/RHEA-2013-0182.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: f39b680b1a413f6cfc5abf2d3f1989b3147783077f0f212b1374bca5d5cb41b9 tzdata-2012j-1.el6.noarch.rpm 68c687880cda6b35f41d8a92e4ed82baa12b87b0afc1617193835ae350558f0b tzdata-java-2012j-1.el6.noarch.rpm x86_64: f39b680b1a413f6cfc5abf2d3f1989b3147783077f0f212b1374bca5d5cb41b9 tzdata-2012j-1.el6.noarch.rpm 68c687880cda6b35f41d8a92e4ed82baa12b87b0afc1617193835ae350558f0b tzdata-java-2012j-1.el6.noarch.rpm Source: 92cfd069f79474c16aaf717a63db9353ea7c8078d0cd575ad54d46fc920b5792 tzdata-2012j-1.el6.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 4 Date: Wed, 23 Jan 2013 23:41:10 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2013:0189 Important CentOS 5 ipa-client Update To: centos-announce(a)centos.org Message-ID: <20130123234110.GA13755(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2013:0189 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2013-0189.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: f3758189982b98bb70f0d7069189c7aabce5d2849d8082729f23a664953725ca ipa-client-2.1.3-5.el5_9.2.i386.rpm x86_64: 63fa34584371e643e2f654e781ca402f8bf713c815f2b8c55ec335da34796b5b ipa-client-2.1.3-5.el5_9.2.x86_64.rpm Source: f927d7bfa9a7ef9461ad033dc334a442d8b963e703a8ac299b2ac4c7612a6344 ipa-client-2.1.3-5.el5_9.2.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 5 Date: Thu, 24 Jan 2013 03:12:49 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2013:0188 Important CentOS 6 ipa Update To: centos-announce(a)centos.org Message-ID: <20130124031249.GA24000(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2013:0188 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2013-0188.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: d08142fe9a357c11cbb46f2db8761d34fe5ee1997a3f0b4ee3f0c405d2b17279 ipa-admintools-2.2.0-17.el6_3.1.i686.rpm 711ff3c1df50339ade3b9fbc4bb0e6f1218826b932190283e4b2a55d2a05c610 ipa-client-2.2.0-17.el6_3.1.i686.rpm 2cb19ac5e3845b131823143d74ac4bf7921b8457e544ea860f35a43b47005d79 ipa-python-2.2.0-17.el6_3.1.i686.rpm 89d33f2f4eda6d2954b76a38699a466f08b8147bdcfb352d32c20d01aa34528b ipa-server-2.2.0-17.el6_3.1.i686.rpm afa09c14fe60ff9da391d614244ee2d7f61ce8a12272e09db35cd523a30713db ipa-server-selinux-2.2.0-17.el6_3.1.i686.rpm x86_64: d239379741fd345b5f2ba0eafb6a68466b9327469eb4d65bc66e8371da131a24 ipa-admintools-2.2.0-17.el6_3.1.x86_64.rpm 5e69eb6cbc39e5e70d6a4954ae546d468828af587a77d5b329d61669f4e9cb80 ipa-client-2.2.0-17.el6_3.1.x86_64.rpm 5c91ed60f8c24b2edb53f13fb31e07bbd00443ae7c5da1416692645f115df9ea ipa-python-2.2.0-17.el6_3.1.x86_64.rpm 1a001ab55dd2cbeddee005f990ec166b851a1dd10a9d4734e4567da3f8cc56bd ipa-server-2.2.0-17.el6_3.1.x86_64.rpm 8f944d90398a8829248cb2a819a3f4168b59d2d00d266fff681a0013652ce716 ipa-server-selinux-2.2.0-17.el6_3.1.x86_64.rpm Source: 972cad725ee654b34d7ef6f72860d2e78f4247e99626ac25a377b67f0be9f2cb ipa-2.2.0-17.el6_3.1.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 95, Issue 8 **********************************************

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centos certification
by Adekoya Adekunle 24 Jan '13

24 Jan '13

hi, any certification on centos ? if yes where can i buy study materials ?

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cronjob not running
by Adekoya Adekunle 24 Jan '13

24 Jan '13

i did this from the console crontab -e then i inserted this in my vi editor 10 * * * * curl http://mysite.com/test.php then i exited vi then i did crontab -l and the cron job was listed then i did /sbin/service crond start and i waited for 10 mins to get a message echo to my console. the message is displayed in my browser when the php script(http://mysite.com/test.php) is loaded via my browser. The message is also shown on my console when d curl command is run direct from the console. the problem is getting the message from the cronjob. what could be wrong ? could it be that the job is not well setup ? note , i logged in as root user. please help regards kunle

6 11

clock sync/drift
by Matt Garman 23 Jan '13

23 Jan '13

Hi, We have a little over 100 servers, almost all running CentOS 5.7. Virtually all are Dell servers, generally a mix of 1950s, R610s, and R410s. We use NTP and/or PTP to sync their clocks. One phenomenon we've noticed is that (1) on reboot, the clocks are all greatly out of sync, and (2) if the PTP or NTP process is stopped, the clocks start drifting very quickly. If it was isolated to one or two servers, I'd dismiss the issue. I also had this problem under CentOS 4. I suspect something is mis-configured, because I can't imagine the hardware clock on ALL these servers is *that* bad. Anyone else dealt with anything similar? Thanks! Matt

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dhclient in 5.9 having trouble with dhcpd in 6.3 ?
by Stephen Harris 23 Jan '13

23 Jan '13

I have a KVM setup. Host is 6.3. I have a bridged client running 5.9 Since upgrading to 5.9 I noticed that ntpd is being restarted every 12 hours. Jan 20 08:00:25 mercury ntpd[16103]: ntpd exiting on signal 15 Jan 20 20:00:26 mercury ntpd[27462]: ntpd exiting on signal 15 Jan 21 08:00:27 mercury ntpd[11343]: ntpd exiting on signal 15 Jan 21 20:00:28 mercury ntpd[25148]: ntpd exiting on signal 15 Jan 22 08:00:29 mercury ntpd[6254]: ntpd exiting on signal 15 Jan 22 20:00:30 mercury ntpd[20424]: ntpd exiting on signal 15 Jan 23 08:00:31 mercury ntpd[2101]: ntpd exiting on signal 15 Looking at logs this appears to be corrolated to boot.log entries Jan 22 08:00:29 mercury NET[20506]: /sbin/dhclient-script : updated /etc/resolv.conf Jan 22 20:00:30 mercury NET[2080]: /sbin/dhclient-script : updated /etc/resolv.conf Jan 22 20:00:30 mercury NET[2188]: /sbin/dhclient-script : updated /etc/resolv.conf Jan 23 08:00:31 mercury NET[16383]: /sbin/dhclient-script : updated /etc/resolv.conf Jan 23 08:00:31 mercury NET[16485]: /sbin/dhclient-script : updated /etc/resolv.conf Hmm, looking at messages Jan 23 07:58:26 mercury dhclient: 5 bad udp checksums in 5 packets Jan 23 07:58:38 mercury dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67 (xid=0x3265b988) Jan 23 07:59:13 mercury dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67 (xid=0x3265b988) Jan 23 07:59:22 mercury dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67 (xid=0x3265b988) Jan 23 07:59:22 mercury dhclient: 5 bad udp checksums in 5 packets Jan 23 07:59:30 mercury dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67 (xid=0x3265b988) Jan 23 08:00:13 mercury dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67 (xid=0x3265b988) Jan 23 08:00:13 mercury dhclient: 5 bad udp checksums in 5 packets Jan 23 08:00:31 mercury NET[16383]: /sbin/dhclient-script : updated /etc/resolv.conf Jan 23 08:00:31 mercury dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 5 (xid=0x41b67d6c) Jan 23 08:00:31 mercury dhclient: DHCPOFFER from 10.0.0.134 Jan 23 08:00:31 mercury dhclient: DHCPREQUEST on eth0 to 255.255.255.255 port 67 (xid=0x41b67d6c) Jan 23 08:00:31 mercury dhclient: DHCPACK from 10.0.0.134 (xid=0x41b67d6c) Jan 23 08:00:31 mercury NET[16485]: /sbin/dhclient-script : updated /etc/resolv.conf Jan 23 08:00:31 mercury dhclient: bound to 10.0.0.135 -- renewal in 17809 seconds. And the dhcp server (on the host) Jan 23 07:59:39 penfold dhcpd: DHCPACK on 10.0.0.135 to 00:1d:09:1c:c8:7e via br0 Jan 23 07:59:51 penfold dhcpd: DHCPREQUEST for 10.0.0.135 from 00:1d:09:1c:c8:7e via br0 Jan 23 07:59:51 penfold dhcpd: DHCPACK on 10.0.0.135 to 00:1d:09:1c:c8:7e via br0 Jan 23 08:00:04 penfold dhcpd: DHCPREQUEST for 10.0.0.135 from 00:1d:09:1c:c8:7e via br0 Jan 23 08:00:04 penfold dhcpd: DHCPACK on 10.0.0.135 to 00:1d:09:1c:c8:7e via br0 Jan 23 08:00:13 penfold dhcpd: DHCPREQUEST for 10.0.0.135 from 00:1d:09:1c:c8:7e via br0 Jan 23 08:00:13 penfold dhcpd: DHCPACK on 10.0.0.135 to 00:1d:09:1c:c8:7e via br0 Jan 23 08:00:31 penfold dhcpd: DHCPOFFER on 10.0.0.135 to 00:1d:09:1c:c8:7e via br0 Jan 23 08:00:31 penfold dhcpd: DHCPREQUEST for 10.0.0.135 (10.0.0.134) from 00:1d:09:1c:c8:7e via br0 Jan 23 08:00:31 penfold dhcpd: DHCPACK on 10.0.0.135 to 00:1d:09:1c:c8:7e via br0 So it's definitely looking like dhclient doesn't like dhcpd. Server is dhcp-4.1.1-31.0.1.P1.el6.centos.1.x86_64 qemu-kvm-0.12.1.2-2.295.el6_3.10.x86_64 Client is dhclient-3.0.5-31.el5_8.1 Other than being noisy, it doesn't look like things are breaking, but it's definitely wrong :-) -- rgds Stephen

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CentOS-announce Digest, Vol 95, Issue 7
by centos-announce-request＠centos.org 23 Jan '13

23 Jan '13

2 1

totem fails to open .wmv file
by Mark LaPierre 23 Jan '13

23 Jan '13

Hey All, Totem has stopped playing .wmv files recently. I don't know exactly when this happened, but I know I've played .wmv files not too very long ago. I've got 372 .wmv files all of which I've played at one time. When I try to launch any one of the .wmv files from file manager totem pops up but the controls are not functional. If I start totem from a terminal there is no feedback: [mlapier@mushroom Media]$ totem myfile.wmv When I try to open a .wmv file using Movie/Open the controls are not functional. [mlapier@mushroom Media]$ cd /usr/bin/ [mlapier@mushroom bin]$ ls | grep gst- gst-feedback gst-feedback-0.10 gst-inspect gst-inspect-0.10 gst-launch gst-launch-0.10 gst-typefind gst-typefind-0.10 gst-xmlinspect gst-xmlinspect-0.10 gst-xmllaunch gst-xmllaunch-0.10 [mlapier@mushroom bin]$ rpm -qa | grep ^gst gstreamer-ffmpeg-0.10.11-2.el6.i686 gstreamer-plugins-base-0.10.29-1.el6.i686 gstreamer-0.10.29-1.el6.i686 gstreamer-plugins-bad-free-0.10.19-2.el6.i686 gstreamer-plugins-good-0.10.23-1.el6.i686 gstreamer-tools-0.10.29-1.el6.i686 gstreamer-plugins-ugly-0.10.18-4.el6.i686 gstreamer-python-0.10.16-1.1.el6.i686 [mlapier@mushroom bin]$ gst-inspect-0.10 WishingWell.wmv (gst-inspect-0.10:23840): GStreamer-WARNING **: Failed to load plugin 'WishingWell.wmv': WishingWell.wmv: cannot open shared object file: No such file or directory Could not load plugin file: Opening module failed: WishingWell.wmv: cannot open shared object file: No such file or directory [mlapier@mushroom Media]$ [mlapier@mushroom Media]$ gst-launch-0.10 WishingWell.wmv ERROR: pipeline could not be constructed: Unrecoverable syntax error while parsing pipeline WishingWell.wmv . [mlapier@mushroom Media]$ [mlapier@mushroom Media]$ gst-typefind-0.10 WishingWell.wmv WishingWell.wmv - video/x-ms-asf [mlapier@mushroom Media]$ Do you need to see the output of gst-feedback-0.10? It's quite lengthy. -- _ °v° /(_)\ ^ ^ Mark LaPierre Registerd Linux user No #267004 https://linuxcounter.net/ ****

3 5

Re: [CentOS] crontab and gedit
by Adekoya Adekunle 23 Jan '13

23 Jan '13

i tried this(gedit /etc/crontab). it loads a file. the content of this file is different from what i have in crontab -e. why the difference ? On Wed, Jan 23, 2013 at 12:31 PM, Reindl Harald <h.reindl(a)thelounge.net>wrote: > > > Am 23.01.2013 12:23, schrieb Adekoya Adekunle: > > hi, > > > > How can I open crontab with gedit any any other editor ? > > i want to edit my cron jobs with other editors beside vi > > su - > gedit /etc/crontab > >

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