Discuss December 2008

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247 participants
257 discussions

Any way to reduce CPU use of OpenSSH?
by Steve Snyder 15 Dec '08

15 Dec '08

On my CentOS v5.2 server (dual Pentium4) the OpenSSH daemon stands out as being the most CPU-intensive of the applications running, It's used 176 minutes of CPU time in the last 2 days alone. Is there any way to lower the CPU utilization without compromising security? (I.e. without using a less processor-intensive encrypt/decrypt algorithm?) I'm getting the CPU use figures from top, so there no fine-grained info on exactly what code is taking so much time. I'm assuming that the bulk of the time is spent in the OpenSSL libraries. Is there some hardware add-on or processor-specific optimization that would reduce the CPU load incurred by OpenSSH? Thanks.

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OT supermicro server chassis?
by Gordon McLellan 15 Dec '08

15 Dec '08

Does anyone have a supermicro 942i server chassis? I'm trying to figure out if it has a true nine 5.25" drive bays, or if the one occupied by the 3.5" caddy is special / crippled. What I want to do is install three of the supermicro 5x3 hot swap backplanes and I'm gunshy about buying one site unseen. Thanks! Gordon

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Centos 5.2 yum check-update fails - repo change?
by Dave Stevens 15 Dec '08

15 Dec '08

A couple of days ago I run yum update to take care of installing new updates for evolution.i386, evolution-data-server.i386 and nscd.i386 . The update went through with no fuss. Yesterday when I ran check-update I got the exact same updates list. So I did not run yum update, thinking this was a sync error or a repo issue. Today (just a few minutes ago) I ran the update check again and got the same list. So I ran yum clean all and now I get a different error, detailed below. Anyone know why this happens or what to do? I see the epel mirror has changed but don't know why or what to make of it. Advice welcome. Dave --------------- transcript follows ----------------------- [admin@cserver ~]$ yum check-update Loading "fastestmirror" plugin Loading "priorities" plugin Loading mirror speeds from cached hostfile * epel: www.muug.mb.ca * virtualmin: software.virtualmin.com * virtualmin-universal: software.virtualmin.com * base: centos.arcticnetwork.ca * updates: www.muug.mb.ca * addons: www.muug.mb.ca * extras: www.muug.mb.ca 0 packages excluded due to repository priority protections evolution.i386 2.12.3-8.el5_2.3 updates evolution-data-server.i386 1.12.3-6.el5_2.3 updates nscd.i386 2.5-24.el5_2.2 updates [admin@cserver ~]$ man yum [admin@cserver ~]$ yum clean all Loading "fastestmirror" plugin Loading "priorities" plugin You need to be root to perform this command. [admin@cserver ~]$ su - Password: [root@cserver ~]# yum clean all Loading "fastestmirror" plugin Loading "priorities" plugin Cleaning up Everything Cleaning up list of fastest mirrors [root@cserver ~]# exit logout [admin@cserver ~]$ yum check-update Loading "fastestmirror" plugin Loading "priorities" plugin Determining fastest mirrors * epel: www.muug.mb.ca * virtualmin: software.virtualmin.com * virtualmin-universal: software.virtualmin.com * base: www.muug.mb.ca * updates: www.muug.mb.ca * addons: www.muug.mb.ca * extras: www.muug.mb.ca Error: Cannot retrieve repository metadata (repomd.xml) for repository: epel. Please verify its path and try again [admin@cserver ~]$ yum check-update Loading "fastestmirror" plugin Loading "priorities" plugin Determining fastest mirrors * epel: mirror.its.uidaho.edu * virtualmin: software.virtualmin.com * virtualmin-universal: software.virtualmin.com * base: ftp.telus.net * updates: ftp.telus.net * addons: ftp.telus.net * extras: ftp.telus.net Error: Cannot retrieve repository metadata (repomd.xml) for repository: epel. Please verify its path and try again [admin@cserver ~]$ -- Canada must refuse to be entangled in any more wars fought to make the world safe for capitalism. -- The Regina Manifesto, 1933

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CentOS PPC architecture support
by Stewart Williams 15 Dec '08

15 Dec '08

I have a system with a PowerPC cpu which I'd like to run CentOS on in a production environment (albeit for a home personal server.) Does anyone know if the CentOS team are actually going to support PPC? I have found a page which states release 4 is in beta[1]. But little else. Is there lack of demand for support for this aging arch? Is there a lack of volunteers? I'd be willing to test the releases and bug report, or help out in anyway I can. Fedora has good support, however, I don't really want to update the system often. [1] http://www.centos.org/modules/news/article.php?storyid=65

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GNOME + Firefox - Mouse froze - what key combination to revive?
by Lanny Marcus 15 Dec '08

15 Dec '08

Earlier, I was using GNOME and Firefox and the Mouse died. I had to kill the power, to get the box going again, because it doesn't have a reset switch; which is *not* an elegant way to get going. What key combination would get me going or to a shell? CentOS 5, fully updated, 32 bit. TIA!

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CentOS Bug Reporting Policy
by Hywel Richards 15 Dec '08

15 Dec '08

I'm a little confused about what you are supposed to do when you discover a bug with CentOS (and by implication RHEL). Is there some policy as to what to do and where to report the bug? It doesn't seem appropriate to report it to http://bugs.centos.org because CentOS is kept in-sync with the upstream, so bugs will never get fixed in CentOS, only in the upstream distribution. Unless there is some feedback mechanism from this CentOS bugtracker to Redhat that I am unaware of. So that makes the obvious place to report any bugs http://bugzilla.redhat.com, but do they (Redhat) have any opinion on people reporting bugs observed on a CentOS distribution there? Do they welcome it or do they discourage it? There is certainly no CentOS product classification in their bugzilla I can see. So, in short, is there any CentOS bug reporting policy, and is it written down anywhere? Hywel.

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CentOS-announce Digest, Vol 46, Issue 6
by centos-announce-request＠centos.org 15 Dec '08

15 Dec '08

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-2008:1028 Moderate CentOS 3 ia64 cups - security update (Pasi Pirhonen) 2. CESA-2008:1021 Moderate CentOS 3 ia64 enscript - security update (Pasi Pirhonen) 3. CESA-2008:1021 Moderate CentOS 4 s390(x) enscript - security update (Pasi Pirhonen) ---------------------------------------------------------------------- Message: 1 Date: Mon, 15 Dec 2008 18:56:30 +0200 From: Pasi Pirhonen <upi(a)centos.fi> Subject: [CentOS-announce] CESA-2008:1028 Moderate CentOS 3 ia64 cups - security update To: centos-announce(a)centos.org Message-ID: <20081215165630.GA13827(a)centos.fi> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory 2008:1028 https://rhn.redhat.com/errata/RHSA-2008-1028.html The following updated files have been uploaded and are currently syncing to the mirrors: ia64: updates/ia64/RPMS/cups-1.1.17-13.3.55.ia64.rpm updates/ia64/RPMS/cups-devel-1.1.17-13.3.55.ia64.rpm updates/ia64/RPMS/cups-libs-1.1.17-13.3.55.ia64.rpm -- Pasi Pirhonen - upi(a)iki.fi - http://pasi.pirhonen.eu/ Top-postings silently ignored

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CentOS 5 Dom0 doesn't start all DomU images
by Devraj Mukherjee 15 Dec '08

15 Dec '08

Hello all, I have a CentOS Dom0 booting CentOS DomU, I am able to start multiple DomUs from the command line using xm create, but if I copy the configuration files to /etc/xen/auto only one of the DomUs seem to start up automatically. Has anyone experienced anything similar before? Any pointers / hints? Thanks. -- "I never look back darling, it distracts from the now", Edna Mode (The Incredibles)

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SSH login to centos
by Gopinath Achari 15 Dec '08

15 Dec '08

Hi all, SSH login to Centos 5.2 (Fresh installed) system takes a long time, what is the problem. anyone aware of this -- Regards, Gopinath M

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Centos4: USB disk standby?
by Rainer Traut 15 Dec '08

15 Dec '08

Hi, I've decided to use an external USB disk as backup with rsync. This works fine. When the external disk is mounted, it does not go into standby/sleep/whatever, though I'm using it only for 30minutes at night. Is there a way to do this with C4, 2.6.9-78.0.8.ELsmp? E.g. unmount/some special command/upgrade to 5.2? Thx Raier

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Discuss December 2008