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Virtualization software to install Windows as guest on CentOS 5 as host ?
by Hadi Motamedi 05 Feb '10

05 Feb '10

Dear All I need to install Windows as guest on my CentOS 5 as host . Can you please give me the link to download the requierd rpm package for this purpose ? Thank you _________________________________________________________________ Hotmail: Powerful Free email with security by Microsoft. https://signup.live.com/signup.aspx?id=60969

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Unable to update a CentOS 4 : urlopen error nonnumeric port: 8080
by robert mena 04 Feb '10

04 Feb '10

Hi, I am trying to update a CentOS 4.4 but the yum update gives me error messages Setting up Update Process Setting up repositories http://mirror.centos.org/centos/4/updates/i386/repodata/repomd.xml: [Errno 4] IOError: <urlopen error nonnumeric port: '8080?'> Trying other mirror. Cannot open/read repomd.xml file for repository: update failure: repodata/repomd.xml from update: [Errno 256] No more mirrors to try. Error: failure: repodata/repomd.xml from update: [Errno 256] No more mirrors to try. I can access the web from this machine. Any ideas?

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Display a warning message at a certain time ?
by Niki Kovacs 04 Feb '10

04 Feb '10

Hi, I'm currently installing a CentOS 5 desktop as a public internet access point. The machine shuts down every day automatically at 22:30. Is there a way I can display a message in GNOME at 22:15 warning the user that the machine will shutdown in 15 minutes ? Any suggestions ? Niki Kovacs

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OpenSSH-5.3p1 selinux problem on CentOS-5.4.
by James B. Byrne 04 Feb '10

04 Feb '10

Note: I am digest subscriber so if you could copy me directly on any reply to the list I would appreciate it very much. I sent this to the OpenSSH list (secureshell(a)securityfocus.com) yesterday and received no response so I am asking here in hopes that someone else has run across this problem on CentOS. We have encountered a situation that requires sftp access to one of our server by an outside agency. This will be used for a data push application only and we need to secure our server from trespass via this access. After a modest amount of research we decided that the best answer was to use a more recent version of OpenSSH (5.3p1)that supports chroot as a configurable option. I obtained the software from the openssh.org website and built it using the libedit packages from the CentOS testing repo. These were the option used: ./configure --prefix=/opt --with-libedit --with-md5-passwords --with-pam --with-selinux --with-tcp-wrappers The new server software works fine for regular ssh/sftp users. However, when logging on as a member of the chroot group we obtain this error: ssh_selinux_getctxbyname: ssh_selinux_getctxbyname: security_getenforce() failed I have found reports of this exact error via Google in several places dating back to 2006, but these all seem to devolve into either: this has been fixed in version x.y.z on distribution Q, where x.y.z is less than 5.3 and Q is not CentOS. Or, the selinux filesystem has to be mounted inside the chroot directory. Since I assume the former is never going to happen for CentOS, at least not in time to do me any good, I am looking for an explanation of what the latter means and how it is accomplished. Our current SELinux status on that host is: # sestatus SELinux status: enabled SELinuxfs mount: /selinux Current mode: permissive Mode from config file: permissive Policy version: 21 Policy from config file: targeted Our chroot directory path is: /var/data/sshchroot The questions are: 1. Is it possible to mount the selinux filesystem twice on the same host having different roots? 2. If so, then how is this accomplished? 3. If not, then is there anything else that I can do, besides disabling selinux support in the sshd daemon, to get this to work? Sincerely, -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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Re: [CentOS] OpenSSH-5.3p1 selinux problem on CentOS-5.4.
by James B. Byrne 04 Feb '10

04 Feb '10

On Thu, February 4, 2010 10:08, Marc Wiatrowski wrote: > >> >> > Have you looked at using rssh as the users shell? You can limit the > user to a chroot sftp only. Its not stock, but ssh can then be. > > http://dag.wieers.com/rpm/packages/rssh/ > I looked at rssh briefly yesterday when someone suggested it. Had I known of it before we started down this road then we might have used it instead. However, at the moment we seem to have a working solution and so we will stick with that for now. I am not sure what effect disabling SELinux support in SSH actually has from a security standpoint. So, if anyone cares to enlighten me on the the consequences I would like to know. Regards, -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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CentOS-announce Digest, Vol 60, Issue 1
by centos-announce-request＠centos.org 04 Feb '10

04 Feb '10

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-2010:0076 Important CentOS 4 i386 kernel - security and bug fix update (Tru Huynh) 2. CESA-2010:0076 Important CentOS 4 x86_64 kernel - security and bug fix update (Tru Huynh) ---------------------------------------------------------------------- Message: 1 Date: Thu, 4 Feb 2010 13:33:45 +0100 From: Tru Huynh <tru(a)centos.org> Subject: [CentOS-announce] CESA-2010:0076 Important CentOS 4 i386 kernel - security and bug fix update To: centos-announce(a)centos.org Message-ID: <20100204123345.GE24821(a)sillage.bis.pasteur.fr> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory CESA-2010:0076 kernel security update for CentOS 4 i386: https://rhn.redhat.com/errata/RHSA-2010-0076.html The following updated file has been uploaded and is currently syncing to the mirrors: i386: updates/i386/RPMS/kernel-2.6.9-89.0.20.EL.i586.rpm updates/i386/RPMS/kernel-2.6.9-89.0.20.EL.i686.rpm updates/i386/RPMS/kernel-devel-2.6.9-89.0.20.EL.i586.rpm updates/i386/RPMS/kernel-devel-2.6.9-89.0.20.EL.i686.rpm updates/i386/RPMS/kernel-hugemem-2.6.9-89.0.20.EL.i686.rpm updates/i386/RPMS/kernel-hugemem-devel-2.6.9-89.0.20.EL.i686.rpm updates/i386/RPMS/kernel-smp-2.6.9-89.0.20.EL.i586.rpm updates/i386/RPMS/kernel-smp-2.6.9-89.0.20.EL.i686.rpm updates/i386/RPMS/kernel-smp-devel-2.6.9-89.0.20.EL.i586.rpm updates/i386/RPMS/kernel-smp-devel-2.6.9-89.0.20.EL.i686.rpm updates/i386/RPMS/kernel-xenU-2.6.9-89.0.20.EL.i686.rpm updates/i386/RPMS/kernel-xenU-devel-2.6.9-89.0.20.EL.i686.rpm updates/i386/RPMS/kernel-doc-2.6.9-89.0.20.EL.noarch.rpm source: updates/SRPMS/kernel-2.6.9-89.0.20.EL.src.rpm You may update your CentOS-4 i386 installations by running the command: yum update kernel\* Tru -- Tru Huynh (mirrors, CentOS-3 i386/x86_64 Package Maintenance) http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xBEFA581B

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alsa
by mattias 04 Feb '10

04 Feb '10

How to install alsa for sound I use vmware and it requre alsa

2 3

Yum: strange dependencies
by Fajar Priyanto 04 Feb '10

04 Feb '10

Hi all, On Centos 5.4 minimum installation, I tried to install these packages (notice the dependencies): =================================================================================================================== Package Arch Version Repository Size =================================================================================================================== Installing: mc i386 1:4.6.1a-35.el5 base 2.1 M mdadm i386 2.6.9-2.el5 base 827 k ntp i386 4.2.2p1-9.el5.centos.2.1 updates 1.3 M sudo i386 1.6.9p17-5.el5 base 218 k Installing for dependencies: exim i386 4.63-3.el5 base 1.2 M mysql i386 5.0.77-4.el5_4.1 updates 4.8 M perl i386 4:5.8.8-27.el5 base 12 M perl-DBI i386 1.52-2.el5 base 600 k postgresql-libs i386 8.1.18-2.el5_4.1 updates 196 k Transaction Summary =================================================================================================================== Install 9 Package(s) Update 0 Package(s) Remove 0 Package(s) Total download size: 23 M I didn't want all those dependencies, especially exim and mysql. So, instead of installing mc, mdadm, ntp, and sudo at the same time, I installed them one by one and this time no exim and mysql (mc still wanted perl, fine) dependencies. Any thought why was that? Thank you.

2 2

Updating gfortran in CentOS 5.4?
by Jon Forrest 04 Feb '10

04 Feb '10

We're finding that several of the packages we need don't compile using the version 4.1.2 of gfortran that comes with CentOS 5.4. So, I've built the latest version of gfortran (e.g. 4.4.2) but I've done it so that all the new version's files go in /share/apps/gnu so that they don't interfere with the standard gcc distribution (building gfortran requires building some parts of gcc). Although I can compile and run a simple fortran "Hello, world" program using the version of gfortran I built this way, trying to run a more complex application, such as charmm (a molecular dynamics program), fails. When I run charmm, I get the message "Killed". Running strace ./charmm shows execve("./charmm", ["./charmm"], [/* 43 vars */] <unfinished ...> +++ killed by SIGKILL Since "Hello, world" compiles and runs, but charmm compiles and doesn't run, there's something wrong with how charmm is linked. Also, although the 'file charmm' command shows an ELF 64-bit dynamically linked file, 'ldd charmm' says " not a dynamic executable" (note no file name). So, something is strange. What have other people done about building new versions of gfortran on CentOS 5.4? Is this worth the trouble? Or, is it better to just go with Intel Fortran? Cordially, -- Jon Forrest Research Computing Support College of Chemistry 173 Tan Hall University of California Berkeley Berkeley, CA 94720-1460 510-643-1032 jlforrest(a)berkeley.edu

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atime, relatime query
by Rajagopal Swaminathan 04 Feb '10

04 Feb '10

Greetings, I am aware that mounting filesystems with noatime option greatly increases speed. I have tried to follow discussion on the pros and cons of using noatime. I have however not been able to mount with the option relatime in centos 5.2. But in a production db server, which is backed up by HP DP, is it advisable to mount with noatime? Anybody care to share their experience on it? Regards Rajagopal

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