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34758 discussions

Is parralel processing automatically done on multi-core CPU's?
by Rudi Ahlers 06 Mar '10

06 Mar '10

Hi, I just noticed this article, http://www.howtoforge.net/fully-utilizing-your-x-core-cpu which uses http://code.google.com/p/ppss/ for parralel processing. So, can anyone tell me if parralel processing happens automatically on CentOS, or would I need to use this script as well? We mainly have Dual Core & Dual CPU, Dual Core (i.e. 8 cores) servers and it would be benefitial to know whether any applications on the server could automatically use all 8 cores, or whether I need todo something on the servers to get this working? -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

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how to open a tcp port?
by hadi motamedi 06 Mar '10

06 Mar '10

Dear All On my CentOS , I want to open tcp port 4965 but my server does not contain /etc/sysconfig/iptables . Can you please let me know how to open this port ? Thank you

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Video driver for ThinkPad T61 laptop?
by Aleksey Tsalolikhin 06 Mar '10

06 Mar '10

Hi. Any suggestions how I can get a video driver for my ThinkPad T61 laptop? I've got CentOS 5.4 on it but Xorg crashes when I try to change resolution, and Xorg.log has: (WW) intel: No matching Device section for instance (BusID PCI:0:2:1) found (--) PCI:*(0:2:0) Intel Corporation unknown chipset (0x2a02) rev 12, Mem @ 0xf8100000/20, 0xe0000000/28, I/O @ 0x1800/3 (--) PCI: (0:2:1) Intel Corporation unknown chipset (0x2a03) rev 12, Mem @ 0xf8200000/20 I didn't find one on the vendor's website. Is there something I can do? Best, -at

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old package location?
by Les Mikesell 05 Mar '10

05 Mar '10

After an update to 5.4, squid seems to no longer let you override Cache-Control: no-cache headers in a refresh pattern so I need to go back to an older version. But I've forgotten where the archive of old rpms lives... -- Les Mikesell lesmikesell(a)gmail.com

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Intrusion Detection
by Dan Burkland 05 Mar '10

05 Mar '10

Hello all, I have been exploring the various intrusion detection systems available for the Linux platform and was wondering what ones you all would recommend? I have used AIDE before and while it is extremely easy to setup, it does not support the ability to send alerts as files are changed (allows one to be aware of an intrusion almost immediately). Thank you, Dan Burkland

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grub.conf and /proc/cmdline
by Jerry Geis 05 Mar '10

05 Mar '10

I have a grub.conf (below) with pci=nomsi, also /proc/cmdline and dmesg | more do not show the pci=nomsi. How can this be? there are no strange characters after quiet and before pci=nomsi. It was edited with vi. What can I do to get this parameter in my kernel boot line. Jerry ----------------- default=0 timeout=5 splashimage=(hd0,0)/boot/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.18-164.11.1.el5) root (hd0,0) kernel /boot/vmlinuz-2.6.18-164.11.1.el5 ro root=LABEL=/ rhgb quiet pci=nomsi initrd /boot/initrd-2.6.18-164.11.1.el5.img cat /proc/cmdline ro root=LABEL=/ rhgb quiet dmesg | more Linux version 2.6.18-164.11.1.el5 (mockbuild(a)builder10.centos.org) (gcc version 4.1.2 20080704 (Red Hat 4.1.2-46)) #1 SMP Wed Jan 20 07:32:21 EST 2010 Command line: ro root=LABEL=/ rhgb quiet BIOS-provided physical RAM map:

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Re: [CentOS] Where i download CentOS 4 iso for SPARC?
by J.Witvliet＠MINDEF.NL 05 Mar '10

05 Mar '10

________________________________ From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On Behalf Of Luigi Castro Cardeles Sent: Thursday, March 04, 2010 9:12 PM To: CentOS list Subject: [CentOS] Where i download CentOS 4 iso for SPARC? Hi, at http://www.centos.org/product.html show that centos support SPARC architecture. Where can i download a iso? The only one i can find is this: http://beta.centos.org/centos/4.2beta/os/sparc/ and this link is broken. Best Regard's Luigi Castro Cardeles I thought that the people from aurotalinux.org were the few still remaining to work on sparc.... Not CentOS, but another RH-fork hw ______________________________________________________________________ Dit bericht kan informatie bevatten die niet voor u is bestemd. Indien u niet de geadresseerde bent of dit bericht abusievelijk aan u is toegezonden, wordt u verzocht dat aan de afzender te melden en het bericht te verwijderen. De Staat aanvaardt geen aansprakelijkheid voor schade, van welke aard ook, die verband houdt met risico's verbonden aan het elektronisch verzenden van berichten. This message may contain information that is not intended for you. If you are not the addressee or if this message was sent to you by mistake, you are requested to inform the sender and delete the message. The State accepts no liability for damage of any kind resulting from the risks inherent in the electronic transmission of messages.

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ImageMagick Bug
by Michael A. Peters 05 Mar '10

05 Mar '10

Hello, I am experience a segfault while trying to use convert between svg and png. I suspect that the bug I am experiencing is identical to this one: https://bugzilla.redhat.com/show_bug.cgi?id=472253 I can try the suggested patch myself, but is this the kind of thing that maybe could be patched in CentOS plus repository until RHEL has an approved patch? The report looks several years old yet there still isn't one, which isn't a good sign. The issue I'm dealing with, on my web site I am moving a lot of the currently gd generated dynamic png images to svg but since not all browsers support svg, I need to convert from svg to png for a fallback. I suspect I'm not the only one who wants to do this sort of thing, so segfault in convert from svg to gif/png is really something that probably should have a fix readily available. I'm running CentOS 5.x

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Hylafax does not pick up.
by James B. Byrne 04 Mar '10

04 Mar '10

We run the distro HylaFax on a CentOS-5.4 host. On infrequent occasions we notice that the server will not pick up an incoming call. It reports listening to modem rings. Now, it seems to me that picking up the call should be under the control of the modem but I notice that there exists a setting in Hylafax for the number of rings before picking up. The default value for this is 0 (zero) but we have it set to 1 (one). Because of this option I am not sure whether there is something wrong with the server or with the modem. Has anyone else experienced this problem and discovered its cause? -- *** 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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Permissions problem
by Sean Carolan 04 Mar '10

04 Mar '10

What am I doing wrong here? I need to be able to write to /var/cvs. This used to work before I moved these groups into an LDAP directory instead of /etc/group: [scarolan@watcher:/var/cvs]$ touch test.txt touch: cannot touch `test.txt': Permission denied [scarolan@watcher:/var/cvs]$ ls -ld drwxrwsr-x 4 cvs cvsgrp 4096 May 18 2008 . [scarolan@watcher:/var/cvs]$ id scarolan uid=4002(scarolan) gid=4002(scarolan) groups=10000(operations),10001(cvsgrp),4002(scarolan)

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