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Re: [CentOS] Old hardware, newer kernels
by Andrew Holway 30 Nov '13

30 Nov '13

Unless you are just running some home server or something the general idea of servers is to provide uptime. Servers usually start dying after about 3 to 6 years* and, if you are trying to provide uptime, searching around on ebay for someone that has a PATA hard drive, DDR memory or some ancient pcix controller will severely dent this objective. I agree that its a shame that so much of this ends up in landfill. The fact that chassis are not normally immediately reusable is a tragedy in my eyes but running old, junk equipment is even more of a tragedy when it breaks and people are relying on it. *I work a lot in HPC where servers are hammered to death. On 30 November 2013 14:33, Steve Clark <sclark(a)netwolves.com> wrote: > On 09/24/2013 03:55 PM, Lists wrote: >> On 09/19/2013 08:26 PM, Ashley M. Kirchner wrote: >>> It works for what it does. And I'm completely prepared to freeze it as far >>> as software goes. I was just curious what may have happened after that >>> particular version of the kernel, and whether there's something else I can >>> do, or call it done, slap a red sticker on it that read, "DON'T EVER >>> UPGRADE ANYMORE" and call it done. >>> >> For what it's worth, we have a single-core P3 running the latest >> Centos6/32 without issue. I realize that from a processing power stand >> point my SIP phone is probably faster, but like Ashley, it does a job >> and very well at that. (network monitor) >> >> [root@edison ~]# cat /proc/cpuinfo >> processor : 0 >> vendor_id : GenuineIntel >> cpu family : 6 >> model : 7 >> model name : Pentium III (Katmai) >> stepping : 3 >> cpu MHz : 498.456 >> cache size : 512 KB >> fdiv_bug : no >> hlt_bug : no >> f00f_bug : no >> coma_bug : no >> fpu : yes >> fpu_exception : yes >> cpuid level : 2 >> wp : yes >> flags : fpu vme de pse tsc msr pae mce cx8 mtrr pge mca cmov >> pse36 mmx fxsr sse up >> bogomips : 996.91 >> clflush size : 32 >> cache_alignment : 32 >> address sizes : 36 bits physical, 32 bits virtual >> power management: >> >> [root@edison ~]# cat /proc/version >> Linux version 2.6.32-358.18.1.el6.i686 >> (mockbuild(a)c6b10.bsys.dev.centos.org) (gcc version 4.4.7 20120313 (Red >> Hat 4.4.7-3) (GCC) ) #1 SMP Wed Aug 28 14:27:42 UTC 2013 >> >> _______________________________________________ >> CentOS mailing list >> CentOS(a)centos.org >> http://lists.centos.org/mailman/listinfo/centos >> > What is with people these days? Why if something works but it is old do people > want to say OMG you need new hardware? > > -- > Stephen Clark > *NetWolves* > Director of Technology > Phone: 813-579-3200 > Fax: 813-882-0209 > Email: steve.clark(a)netwolves.com > http://www.netwolves.com > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > http://lists.centos.org/mailman/listinfo/centos

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Old hardware, newer kernels
by Ashley M. Kirchner 30 Nov '13

30 Nov '13

I have an old server (old hardware) that's been running 6.4 with kernel 2.6.32-279.19.1.el6.i686, no problem. Except, any kernel update after that causes it not to boot anymore. All I get is a blinking cursor on the screen, nothing else. Is this the end of this hardware, no more kernel updates after this? For reference, these are all the options that kernel is booting up with (lines wrapped on purpose): title CentOS (2.6.32-279.19.1.el6.i686) root (hd0,0) kernel /boot/vmlinuz-2.6.32-279.19.1.el6.i686 ro \ root=UUID=3f79e6b6-7845-499f-b708-aef782602673 rd_NO_LUKS rd_NO_LVM \ rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 \ KEYBOARDTYPE=pc KEYTABLE=us noapic apm=off ide=nodma acpi=off \ crashkernel=auto rhgb quiet selinux=0 initrd /boot/initramfs-2.6.32-279.19.1.el6.i686.img

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Multicast routing daemon
by Ian Pilcher 30 Nov '13

30 Nov '13

Is there a multicast routing daemon included in CentOS or EPEL? (Seems like a weird question to even have to ask, but I can't seem to find one.) Thanks! -- ======================================================================== Ian Pilcher arequipeno(a)gmail.com Sent from the cloud -- where it's already tomorrow ========================================================================

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Filesystem labeling confusion or mess up
by Götz Reinicke - IT Koordinator 29 Nov '13

29 Nov '13

Hi, I do have an iscsi storage with two raidsets. I'm logged in to the target and get two devices: /dev/sdb and /dev/sdc. After formatting the devices with ext4 I realised, that I had used a wrong label, so I tried to relabel the devices. But now I'm confused: doing a e2label /dev/sdb or /dev/sdc returns always the same label name for both devices. so I did "e2label /dev/sdb students" and "e2label /dev/sdc staff" and now mounting the devices shows the same filesystem under sdb and sdc! Looks like sdc (an empty device) is gone... Any suggestions or explanations? Thanks and best regards . Götz -- Götz Reinicke IT-Koordinator Tel. +49 7141 969 82 420 E-Mail goetz.reinicke(a)filmakademie.de Filmakademie Baden-Württemberg GmbH Akademiehof 10 71638 Ludwigsburg www.filmakademie.de Eintragung Amtsgericht Stuttgart HRB 205016 Vorsitzender des Aufsichtsrats: Jürgen Walter MdL Staatssekretär im Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg Geschäftsführer: Prof. Thomas Schadt

3 4

Machine check events
by Glenn Eychaner 28 Nov '13

28 Nov '13

On my new Haswell-based machines, I am occasionally seeing entries like the following in /var/log/messages: kernel: [Hardware Error]: Machine check events logged (I would not have even noticed them, except that they get flagged by logwatch.) These messages always occur alone, and don't seem to have a corresponding entry in any other log file in /var/log. How can I get more info about these messages? Thanks, -G. -- Glenn Eychaner (geychaner(a)lco.cl) Telescope Systems Programmer, Las Campanas Observatory

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Ultrabook for CentOS?
by Nux! 28 Nov '13

28 Nov '13

Hello, I need to buy an ultrabook. Any recommendations for something that would work out of the box more or less? I do not want a Chromebook (or anything ARM) or one of these new "touch" laptops, in fact I'm after a nice matte screen. Budget is modest-ish (£500/$800) so dont go crazy. :) Thanks! -- Sent from the Delta quadrant using Borg technology! Nux! www.nux.ro

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nss_ldap loop sleeping after ...
by aurfalien 28 Nov '13

28 Nov '13

Hi, I rebooted a old Centos 5 box and now its stuck in an ever increasing timeout loop; nss_ldap: reconnecting tl LDAP server (sleeping # seconds).... This happens before network services starts. Any one know how I can break out of this? I tried booting in single user mode from the grub menu but no dice, the thing keeps nss_ldap looping. Thanks in advance, - aurf

3 2

LSB Certification
by Mark LaPierre 28 Nov '13

28 Nov '13

Hey All, Could someone provide a URL to a page that states what LSB level RHEL/CentOS 6.4 is certified to. I'm looking to download a driver: http://www.openprinting.org/printer/Epson/Epson-WorkForce_1100 They offer a driver for LSB 3.1 or LSB 3.2. I'm hoping that one of those applies to CentOS 6.4. -- _ °v° /(_)\ ^ ^ Mark LaPierre Registered Linux user No #267004 https://linuxcounter.net/ ****

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Question on list of packages on centos 7
by Jerry Geis 27 Nov '13

27 Nov '13

Is there a way to get a list of packages AND version of that package in centos/redhat 7? Perhaps from one a beta of 7 or something? I searched for "list of packages in redhat 7" and I can get a list but the list did not have any version information just the package name and description. Not off topic just "future" topic. Thanks, everyone have a great Thanksgiving! jerry

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complicated svn, apache, krb5 and selinux problem
by m.roth＠5-cent.us 27 Nov '13

27 Nov '13

CentOS 6.4. We've got a subversion repo on a server. Currently, it's set to use krb5. Trouble is, the krb5.conf is set up to use pcscd authentication (using PIV cards). Whether anything else on the server needs it, it appears that when people issue certain svn commands (I haven't nailed down which), the thing tries to look at the pcscd.pid... and selinux complains that this is naughty. (We're in permissive mode.) I don't know deeply enough if anything else really needs to do this on the server, but I'd like to fix it so that doing svn stuff does *not* invoke that call. It *appears* if I comment out the pkinit_identities, we don't get the error (for obvious reasons). Ideally, I'd like to find some way to configure subversion - maybe in the /etc/httpd/conf.d/subversion.conf - so that it doesn't try that, but we *do* want it to do password krb5 authentication. Does this make sense? If so, is it do-able? mark, back at googling

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