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Fwd: Different behavior of net.ipv4.ip_local_port_range between RHEL-5 and RHEL-6
by Santi Saez 08 Nov '12

08 Nov '12

Forwarding just in case anyone is familiar with this on CentOS, thanks! -- Hello, Just found that net.ipv4.ip_local_port_range has different behavior between RHEL releases: until v6 although you have multiple source IPs you can only use a fixed number of local ports, seems that "ip_local_port_range" is a global configuration or limitation. On RHEL-6 kernel (testing with 2.6.32-279) you can bind() to N local ports per source IP, it's a per-IP limit: total ports = ip_local_port_range x source IP. The problem is that on RHEL-5 and 4 you can only make ip_local_port_range outgoing connections and you can't use different source IPs trick to increase this limitation. I have been testing and vanilla 2.6.32 kernel and other Linux distributions like Debian doesn't support this. What has been changed/patched on RHEL-6 to allow this? Santi Saez

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sudo issue error with securing commands
by Gregory Machin 08 Nov '12

08 Nov '12

Hi. I have a user that I want to limit to only running a couple of commands ... As in here user just copy and paste where needed , sorry thats all your allowed to do ... but thus far I can't get the syntax correct for the sudoers file line 115| greg ALL = /bin/chmod -R o+rx /opt line 116| greg ALL = /bin/chmod -R ug+rwx /opt line 117| greg ALL = /bin/chown -R root:root /opt line 118| greg ALL = /usr/bin/setfact -R -m u:greg.reeve:rwx /opt line 119| greg ALL = /usr/bin/setfact -d -R -m u:greg.reeve:rwx /opt visudo gives me the following : >>> /etc/sudoers: syntax error near line 116 <<< >>> /etc/sudoers: syntax error near line 117 <<< >>> /etc/sudoers: syntax error near line 118 <<< what am I missing ? thanks G

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kvm to virtualbox
by Jerry Geis 08 Nov '12

08 Nov '12

I have a KVM (qemu-img raw) that I have attempted to convert to VirtualBox. I did the convertfromraw to convert to vdi. I was hoping it would be that simple but, no. When I try to boot the image, it does not boot. Is there something "extra" I need to do - or something different? Thanks, Jerry

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Centos 6.3 x86_64, drbd, which repo? atrpms or elrepo?
by Rafał Radecki 08 Nov '12

08 Nov '12

Hi all. I am currently installing drbd on Centos 6.3 x86_64 and have two possible repos to choose. Which one in your opinion is better/provides more stable packages/etc.? Best regards, Rafal Radecki.

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Re: [CentOS] Centos 6: Dell GX270 fails to power down (but reboots)
by Keith Roberts 08 Nov '12

08 Nov '12

On Thu, 8 Nov 2012, Sorin Srbu wrote: > To: 'CentOS mailing list' <centos(a)centos.org> > From: Sorin Srbu <sorin.srbu(a)orgfarm.uu.se> > Subject: Re: [CentOS] Centos 6: Dell GX270 fails to power down (but reboots) Have you tried to shutdown from a CL console. $ pinfo shutdown: SHUTDOWN(8) Linux System Administrator’s Manual NAME shutdown - bring the system down SYNOPSIS /sbin/shutdown [-t sec] [-arkhncfFHP] time [warning-message] DESCRIPTION shutdown brings the system down in a secure way. All logged-in users are notified that the system is going down, and login(1) is blocked. It is possible to shut the system down immediately or after a specified delay. All processes are first notified that the system is going down by the signal SIGTERM. This gives programs like vi(1) the time to save the file being edited, mail and news processing programs a chance to exit cleanly, etc. shutdown does its job by signalling the init process, asking it to change the runlevel. Kind Regards, Keith ----------------------------------------------------------- Websites: http://www.karsites.net http://www.php-debuggers.net http://www.raised-from-the-dead.org.uk All email addresses are challenge-response protected with TMDA [http://tmda.net] -----------------------------------------------------------

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CentOS-announce Digest, Vol 93, Issue 5
by centos-announce-request＠centos.org 08 Nov '12

08 Nov '12

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. CESA-2012:1426 Moderate CentOS 6 kernel Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Wed, 7 Nov 2012 12:15:29 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2012:1426 Moderate CentOS 6 kernel Update To: centos-announce(a)centos.org Message-ID: <20121107121529.GA9257(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2012:1426 Moderate Upstream details at : https://rhn.redhat.com/errata/RHSA-2012-1426.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: aa500979ef80025fcaab323bf0ae7bca9f266d8a72232c24fd1033f0d923d9b5 kernel-2.6.32-279.14.1.el6.i686.rpm 56b520ec40d303ca37343521144d4cc531b6deb185a697d4a8fa9e69dd5634c0 kernel-debug-2.6.32-279.14.1.el6.i686.rpm 11b3832621c9527e6fe9ac587389584033b6c53abfb3212bab0d3cdd4fe034e9 kernel-debug-devel-2.6.32-279.14.1.el6.i686.rpm 46c934ce0a48c8a5f83fb085d518a4d35c4416ff2a66482f93fe3acb598ad24d kernel-devel-2.6.32-279.14.1.el6.i686.rpm ca17df79d119fd259fcf7657ba40a74b39835d2b1a9eb0e47e13923449c3a1e9 kernel-doc-2.6.32-279.14.1.el6.noarch.rpm 4601c967297c0c902049b440b71ee6f1e5744fc0b2a0182a864a05cec79166ae kernel-firmware-2.6.32-279.14.1.el6.noarch.rpm 7864e121f92e1b3a73e91980c91e54999e78e4674109a31380c87a27f2153b03 kernel-headers-2.6.32-279.14.1.el6.i686.rpm 11894d32c8b8bc97d322d0202b7af64be5d96b7eb6492bc109e8629ab1d4907a perf-2.6.32-279.14.1.el6.i686.rpm 699c77cff73fd096cbef7412356269ce93852d98f6de54c8ee5fbbc6bd1adee9 python-perf-2.6.32-279.14.1.el6.i686.rpm x86_64: f4762486a9617a19dfcdd41b21c46a57025e30e306ca99b65044200b5a731cee kernel-2.6.32-279.14.1.el6.x86_64.rpm b11b0e7c5739013a5228dbacd4b13615bbf3cedd7fb8eaa940cc948cd38784d6 kernel-debug-2.6.32-279.14.1.el6.x86_64.rpm 33944d04948e557b5c4c4344113b1676eddb69f4e948fea743708942c09fc768 kernel-debug-devel-2.6.32-279.14.1.el6.x86_64.rpm 6353c1917981b0b1988683fbab1b5ec2706c0f82d781ab313bbd568504847cb1 kernel-devel-2.6.32-279.14.1.el6.x86_64.rpm 5c07baf746413f725990ff3e6517c888466696300ec089601f2489764582832f kernel-doc-2.6.32-279.14.1.el6.noarch.rpm e2503630209079a150527ce96a77daff11c60c24d35ca471fa97f22891b8f2cd kernel-firmware-2.6.32-279.14.1.el6.noarch.rpm 73d5da3aa317e566b261566ff5f96ac903b8b60e13e8a687452055b75752adc8 kernel-headers-2.6.32-279.14.1.el6.x86_64.rpm 0ae67923dda011924df8c40645aceb81790f2c285199c45e4978993537ae89f2 perf-2.6.32-279.14.1.el6.x86_64.rpm 336d2f268c543c7f6495009bc5131fa33503ce54acebde5f2cd8a2f6e7d9020c python-perf-2.6.32-279.14.1.el6.x86_64.rpm Source: 0a39da580812f9f1c8031619681c3c4907221042ebc700c9835adae7b88939ee kernel-2.6.32-279.14.1.el6.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 93, Issue 5 **********************************************

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Re: [CentOS] Virtualization Options!
by Antonio da Silva Martins Junior 08 Nov '12

08 Nov '12

Hi folks, Thanks for your advices, I'll take a look on all and post what I conclude on it. Maybe I'm not clear enought, I already had CentOS5.8 Xen on my Hosts, but I'm finding a solution more "enterprise". The HA/Load Balance solution we had are self made, it is much time consuming for our needs. We are searching for something more easy (or self) administering software. This is why we take a look on VMware, Citrix, etc... We'll take a look on OpenStack, RHEV/RHEM, maybe Oracle VM... Thanks, Antonio. -- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Antonio S. Martins Jr. - Support Analyst | "Only The Shadow Knows | | Universidade Estadual de Maringá - Brasil| what evil lurks in the | | NPD - Núcleo de Processamento de Dados | Heart of Men!" | | E-Mail: asmartins(a)uem.br / shadow(a)uem.br | !!! Linux User: 52392 !!! | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ "Real Programmers don’t need comments — the code is obvious." -- Esta mensagem foi verificada pelo sistema de antivirus e acredita-se estar livre de perigo.

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Re: [CentOS] Centos 6: Dell GX270 fails to power down (but reboots)
by Rainer Traut 08 Nov '12

08 Nov '12

Am 06.11.2012 13:57, schrieb Sorin Srbu: > -----Original Message----- > From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On Behalf > Of Rainer Traut > Sent: den 6 november 2012 13:53 > To: centos(a)centos.org > Subject: Re: [CentOS] Centos 6: Dell GX270 fails to power down (but reboots) > >> Thx for all your answers, but latest Bios is installed (A07 from year 2006). >> The pc is has not crashed so far, except the poweroff thingy so I guess >> hw is ok. >> FWIW under C5 all was well. > > A wild shot; if you have physical access to the computer, could you please > open it up and check the capacitors, especially around the cpu? I looked at the capacitors, they seem good, nothing bursted or corroded. I'm inclined to say it's purely a C6 problem, as I said the behaviour is since I installed C6 on it.

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Centos 6: Dell GX270 fails to power down (but reboots)
by Rainer Traut 08 Nov '12

08 Nov '12

Hi, am using latest C6 on a Dell GX270 with latest Bios. It fails to power down but restarts when running $ sudo poweroff I tried some google hints for kernel boot option: acpi=force no help, looks like acpi is working anyway when looking in dmesg acpi=off makes e1000 nic fail to initialize Any suggestions? Rainer

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Re: [CentOS] Centos 6: Dell GX270 fails to power down (but reboots)
by m.roth＠5-cent.us 08 Nov '12

08 Nov '12

Sorin Srbu wrote: > Behalf > Of Rainer Traut > >>Thx for all your answers, but latest Bios is installed (A07 from year >> 2006). The pc is has not crashed so far, except the poweroff thingy so I guess >>hw is ok. FWIW under C5 all was well. > > A wild shot; if you have physical access to the computer, could you please > open it up and check the capacitors, especially around the cpu? Here's another one: there's an option in the BIOS of some servers for "return to previous state" on loss of power. If that's there, you might try it the other way. I don't suppose the system's still under warranty.... mark

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