- Discuss - lists.centos.org

pure-ftpd-1.0.22
by David Hrbáč 18 Nov '07

18 Nov '07

Hi, anyone successfully compiled http://download.pureftpd.org/pub/pure-ftpd/snapshots/pure-ftpd-1.0.22.tar.b… Thanks, David

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Video conferencing package: Ekiga or other?
by Lanny Marcus 18 Nov '07

18 Nov '07

My wife bought an inexpensive store brand web cam, so she can do video conferencing with people using Microsoft NetMeeting. Probably it is not supported in Linux and we will need to buy a supported web cam. I installed the Ekiga package. Is there something easier to configure and use or is Ekiga the best way to go? TIA! -- Lanny --------------------------------------------------------- Over 800 Magazine titles up to 85% off http://lowcostmagazines.com/

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Correctly displaying different charsets in Gnome-Terminal
by Niki Kovacs 18 Nov '07

18 Nov '07

Hi, I'm using CentOS 5.0 with GNOME on almost all my desktops. My system is in french, so the default charset ($LANG) is fr_FR.UTF-8. I'm in charge of our public library database server, running Debian Sarge. It's mainly running a LAMP server with a few extra PHP modules, and it's hosting our library management software. Since the app refuses to work correctly with UTF-8, I set the general system locale on the server to fr_FR@euro (ISO-8859-1). When I administrate that server remotely from, say, a desktop running Slackware (which defaults to ISO, not Unicode), characters in the console get displayed correctly. For example, 'less /root/ChangeLog.txt' will display my ChangeLog file (with french special characters) correctly. But when I open an SSH session on my CentOS machine in a GNOME Terminal, the french special characters are all replaced by inverted question marks. And the same goes for the MySQL monitor: all the french characters in the entries (é, à, ç, ù, ...) are incorrectly displayed. Q: how can I display all that correctly from within my Gnome Terminal? cheers, Niki Kovacs

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Firfox plugins but no sound
by Robert Spangler 18 Nov '07

18 Nov '07

Hello everyone, I run a 64bit system here and install flash plugins for firefox using nspluginwrapper. I get the movies but there is no sound. Flashplayer is: flash-plugin-9.0.48.0-release.i386.rpm nspluginwrappers are: nspluginwrapper-0.9.91.5-1.x86_64.rpm nspluginwrapper-i386-0.9.91.5-1.x86_64.rpm Any help in tracking this down would be great. Thnx. -- Regards Robert Smile... it increases your face value!

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Running a local mirror of centos?
by Jason Pyeron 18 Nov '07

18 Nov '07

Now that we have 28 centos boxes up and running, we really want to minimize the up2date traffic. Is there a how to on mirroring centos? We are using rsync -azHv --delete-excluded --delete rsync://mirrors.kernel.org/centos/ --exclude-from=centos.excludes --bwlimit=64 --progress centos/ But then what? -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- - - - Jason Pyeron PD Inc. http://www.pdinc.us - - Sr. Consultant 10 West 24th Street #100 - - +1 (443) 269-1555 x333 Baltimore, Maryland 21218 - - - -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, purge the message from your system and notify the sender immediately. Any other use of the email by you is prohibited.

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mount sftp or ftp+ssl drive on windows
by Bazy 18 Nov '07

18 Nov '07

Hello guys, I would like to mount a sftp or a ftp with ssl (vsftp with ssl) on to a Windows machine as an X: drive. So far I found SftpDrive witch costs only $39 :) and I don't want it. Do any of you have a positive experience with something like this? I need it cause I will install a very important software on that drive, witch doesn't need to be on the local disk of the windows machine. Thank you!

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How to make fdisk recognize increased iSCSI LUN?
by Mindaugas 17 Nov '07

17 Nov '07

Hello, How to explain to fdisk that /dev/sda size changed? I increased LUN on storage, reloaded iscsi, did echo 1 > /sys/<something>/rescan. And I see in "dmesg" that kernel found new size of the LUN. But when I type "fdisk /dev/sda" it still shows old size. On /dev/sda1 sits LVM PV and I'd like to resize it instead of adding one more PV to volume group. CentOS 4.4 64bits. Thanks, Mindaugas

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Basic Network question pinging different subnets
by Bob Metelsky 17 Nov '07

17 Nov '07

Hi Im a little perplexed by this situation I have centos 4.5 installed on 2 pcs - each with 2 network cards machine 1 eth0 Link encap:Ethernet HWaddr 00:14:2A:6B:C8:CC inet addr:10.54.7.2 Bcast:10.54.7.255 Mask:255.255.255.0 eth1 Link encap:Ethernet HWaddr 00:11:50:9B:A2:90 inet addr:10.54.0.2 Bcast:10.54.0.255 Mask:255.255.255.0 machine 2 eth0 Link encap:Ethernet HWaddr 00:14:2A:69:4C:47 inet addr:10.54.7.3 Bcast:10.54.7.255 Mask:255.255.255.0 eth1 Link encap:Ethernet HWaddr 00:11:50:9B:A5:0A inet addr:10.54.0.3 Bcast:10.54.0.255 Mask:255.255.255.0 machine 1 & 2 can ping each other on either subnets machine 3 (windows)... C:\>ipconfig Connection-specific DNS Suffix . : IP Address. . . . . . . . . . . . : 10.54.7.16 Subnet Mask . . . . . . . . . . . : 255.255.255.0 Default Gateway . . . . . . . . . : 10.54.7.1 cant ping anything on the 10.54.0 subnet, nor does that subnet show up ip using a port scanner... C:\>ping 10.54.0.2 Pinging 10.54.0.2 with 32 bytes of data: Request timed out. Request timed out. C:\>ping 10.54.7.2 Pinging 10.54.7.2 with 32 bytes of data: Reply from 10.54.7.2: bytes=32 time<1ms TTL=64 Reply from 10.54.7.2: bytes=32 time<1ms TTL=64 Any ideas why this is happening? I dont have a firewall on the 10.54 address, Thanks Bob

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Mailing list archive
by centos＠911networks.com 17 Nov '07

17 Nov '07

Hi, Is there a searchable mailing archive? http://lists.centos.org/pipermail/centos/ I don't see a way of searching it. -- Thanks http://www.911networks.com When the network has to work

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A good primer to User Administration?
by Eric B. 17 Nov '07

17 Nov '07

Hi, I've been running Linux as a workstation OS for years, and have been dealing with Windows networks and standalone Linux servers for a while now. However, the time has come for me to complete redo the server installation and am looking to move to a complete CentOS install base, with only Windows workstations. My question is the following. I've been searching online for a good reference to describe good practices when building a linux network, but haven't really been able to find much when it comes to best practices for user administration, ACLs, "optimal" (or recommended) file locations, etc. For example, I know I need an LDAP server, but not sure how that ties into system login, or how to use a Linux LDAP server as the basis for a primary domain controller (is it still called that given Windows AD world?), etc. Or even how to properly create group structures and ACLs that accurately reflect group ownership/etc. The octal permissions at the file level are only good enough for a single group; I need to give multiple groups different permissions on the same files, etc. I realize that there are a lot of questions that I need to research, but I was hoping someone could point me in the direction of some advanced admin docs with best practices, etc. Most of the stuff I find relates on how to set up a basic standalone PC, without any reference to how to network together a bunch of servers running off central authentication, etc... Thanks for the advice! Eric

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CentOS-announce Digest, Vol 33, Issue 12
by centos-announce-request＠centos.org 17 Nov '07

17 Nov '07

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-2007:1013 Critical CentOS 3 s390(x) samba - security update (Pasi Pirhonen) 2. CESA-2007:1038 Moderate CentOS 4 s390(x) openldap - security update (Pasi Pirhonen) 3. CESA-2007:0969 Moderate CentOS 4 s390(x) util-linux - security update (Pasi Pirhonen) 4. CESA-2007:0969 Moderate CentOS 3 s390(x) util-linux - security update (Pasi Pirhonen) 5. CESA-2007:1045 Moderate CentOS 3 s390(x) net-snmp - security update (Pasi Pirhonen) 6. CESA-2007:1045 Moderate CentOS 4 s390(x) net-snmp - security update (Pasi Pirhonen) 7. CESA-2007:0701 Low CentOS 4 s390(x) xterm - security update (Pasi Pirhonen) 8. CESA-2007:0709 Low CentOS 4 s390(x) wireshark - security update (Pasi Pirhonen) ---------------------------------------------------------------------- Message: 1 Date: Fri, 16 Nov 2007 16:58:05 +0200 From: Pasi Pirhonen <upi(a)centos.fi> Subject: [CentOS-announce] CESA-2007:1013 Critical CentOS 3 s390(x) samba - security update To: centos-announce(a)centos.org Message-ID: <20071116145805.GV18540(a)centos.fi> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory 2007:1013 https://rhn.redhat.com/errata/RHSA-2007-1013.html The following updated files have been uploaded and are currently syncing to the mirrors: s390: updates/s390/RPMS/samba-3.0.9-1.3E.14.1.s390.rpm updates/s390/RPMS/samba-client-3.0.9-1.3E.14.1.s390.rpm updates/s390/RPMS/samba-common-3.0.9-1.3E.14.1.s390.rpm updates/s390/RPMS/samba-swat-3.0.9-1.3E.14.1.s390.rpm s390x: updates/s390x/RPMS/samba-3.0.9-1.3E.14.1.s390x.rpm updates/s390x/RPMS/samba-client-3.0.9-1.3E.14.1.s390x.rpm updates/s390x/RPMS/samba-common-3.0.9-1.3E.14.1.s390x.rpm updates/s390x/RPMS/samba-swat-3.0.9-1.3E.14.1.s390x.rpm -- Pasi Pirhonen - upi(a)iki.fi - http://pasi.pirhonen.eu/ Top-postings silently ignored

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How to create initrd.img
by David Hrbáč 17 Nov '07

17 Nov '07

Hi, anyone to point me URL on initrd.img creating? I have custom kernel and want to create initrd.img for install media. mkinitrd /tmp/initrd.img 2.6.18-8.1.14.el5.hrb -v -f create unusable file for install media. Thanks, David

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Re: Samba Upgrade on Centos 3
by Ben Mohilef 17 Nov '07

17 Nov '07

> After today's samba update, Centos 3 boxes can not use samba to > communicate with each other, although Windows and the Centos 3 boxes > see each other correctly as do RHEL5 and the Centos3 boxes. The du Upon further investigation, samba can only no longer use wildcards of any type or do things like 'ls' . Doing ls /mnt/SHARE/<complete file name> works fine whereas ls /mnt/SHARE/<partial>* gives an invalid result. I wonder if there is still is a compilation option (there was a few years ago) to enable/disable wildcards which is either turned off or has been disabled? If one knows the complete file name on a Centos 3 share then one has no problem. Windows boxes (and Linux boxes other than Centos 3) work fine and that is the way most admins use samba so this is hardly a crisis. ( Unlike the Ubuntu people who report that nmbd is segfaulting on their boxes and apparently have a different problem). regards, benm

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Installing java on CentOS 5
by Craig White 16 Nov '07

16 Nov '07

strugging with things here... tried tracking the info on the Wiki (which apparently is now in need of a maintainer)... http://wiki.centos.org/HowTos/JavaOnCentOS My primary interest is using Xalan/Saxon/xslt/xsl-fo docbook generation. I was thinking that all I really need is jre but downloaded both jre and jdk just in case. can anyone tell me what I'm doing wrong? (after removing both jdk & jre)... -rw-r--r-- 1 root root 56835774 Sep 25 00:47 jdk-6u3-linux-i586.rpm -rw-r--r-- 1 root root 18835725 Sep 25 00:45 jre-6u3-linux-i586.rpm I tried installing each of them but they never show up in # alternatives --config java # rpm -qa|grep jpackage jpackage-utils-1.7.3-1jpp.2.el5 # rpm -ivh jre-6u3-linux-i586.rpm Preparing... ########################################### [100%] 1:jre ########################################### [100%] Unpacking JAR files... rt.jar... jsse.jar... charsets.jar... localedata.jar... plugin.jar... javaws.jar... deploy.jar... # alternatives --config java There is 1 program that provides 'java'. Selection Command ----------------------------------------------- *+ 1 /usr/lib/jvm/jre-1.4.2-gcj/bin/java Enter to keep the current selection[+], or type selection number: Craig

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Problem running a setuid Perl script on CentOS 4.5
by Alfred von Campe 16 Nov '07

16 Nov '07

I'm trying to create a setuid Perl script (yes, I am aware about the security implications), but am getting this error: % cat testsetuid.pl #!/usr/bin/perl -UT print "My real user id is $< but my effective user id is $>\n"; exit(0); % ./testsetuid.pl Can't do setuid (cannot exec sperl) I am using the stock Perl that came with CentOS 4.5. The problem I am trying to solve is to run a software build as a particular user. We want any user to be able to submit a build job that runs on the build machine as the designated build user. If there is a better way to do this, I'm open to suggestions. Alfred

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change BIOS time setting in Xen?
by Christian Nygaard 16 Nov '07

16 Nov '07

How to you change the BIOS time settings in a Xen HVM fully virtualized guest virtual machine? Right now the BIOS time setting seems to be 3007 as year instead of 2007 which leads to funny problems after the os boots. Cheers, Chris

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LSI 1068e (Super Micro OEM) - kernel update problem
by Michael Mertel 16 Nov '07

16 Nov '07

Hello, I'am using a LSI 1068e OEM version from Super Micro (see lspci). I was able to install a plain CentOS5 with the binary drivers I got from Super Micro. 06:00.0 SCSI storage controller: LSI Logic / Symbios Logic Unknown device 0059 (rev 04) Subsystem: Super Micro Computer Inc Unknown device a180 Flags: bus master, fast devsel, latency 0, IRQ 10 I/O ports at e000 [size=256] Memory at febfc000 (64-bit, non-prefetchable) [size=16K] Memory at febe0000 (64-bit, non-prefetchable) [size=64K] Expansion ROM at fe800000 [disabled] [size=2M] Capabilities: [50] Power Management version 2 Capabilities: [68] Express Endpoint IRQ 0 Capabilities: [98] Message Signalled Interrupts: 64bit+ Queue=0/0 Enable- Capabilities: [b0] MSI-X: Enable- Mask- TabSize=1 But if I try to load the XEN kernel or a newer kernel all I got is a kernel panic, because the new kernel does not know about the megasr.ko module that I installed from disk. So I did the following (without final success): - cp /lib/modules/2.6.18-8.el5/updates/* /lib/modules/2.6.18-8.1.15.el5/updates - depmod -a 2.6.18-8.1.15.el5 - created a new initrd-cpio file and copied megasr.ko into the lib directory The systems starts loading the kernel and its ramdisk, and then hangs: Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block (0,0) I'am a bit lost, what else I can do to get this working? Best Regards --Michael

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weird cron problem
by Andreas Kuntzagk 16 Nov '07

16 Nov '07

Hi, I'm having some problems with a script in /etc/cron.daily. It's quite simple: ------ #!/bin/sh touch /mnt/Backup/foo rsnapshot daily ----- So the touch gets executed, but the rsnapshot not. If I run manually > run-parts /etc/cron.daily/ everything's fine. Also when I run rsnapshot from roots crontab. So I have no idea what's the issue here. Any ideas / recommendations what to check? Andreas

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CentOS-announce Digest, Vol 33, Issue 11
by centos-announce-request＠centos.org 16 Nov '07

16 Nov '07

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-2007:0703 Moderate CentOS 4 ia64 openssh - security update (Pasi Pirhonen) 2. CESA-2007:1003 Moderate CentOS 4 ia64 openssl - security update (Pasi Pirhonen) 3. CESA-2007:0779 Low CentOS 4 ia64 mailman - security update (Pasi Pirhonen) 4. CESA-2007:0387 Moderate CentOS 4 ia64 tcpdump - security update (Pasi Pirhonen) 5. CESA-2007:0737 Moderate CentOS 4 ia64 pam - security update (Pasi Pirhonen) 6. CESA-2007:0709 Low CentOS 4 ia64 wireshark - security update (Pasi Pirhonen) 7. CESA-2007:0701 Low CentOS 4 ia64 xterm - security update (Pasi Pirhonen) 8. CESA-2007:1016 Critical CentOS 4 ia64 samba - security update (Pasi Pirhonen) 9. CESA-2007:1003 Moderate CentOS 4 s390(x) openssl - security update (Pasi Pirhonen) 10. CESA-2007:0703 Moderate CentOS 4 s390(x) openssh - security update (Pasi Pirhonen) 11. CESA-2007:0775 Low CentOS 4 s390(x) mailman - security update (Pasi Pirhonen) 12. CESA-2007:1038 Moderate CentOS 4 ia64 openldap - security update (Pasi Pirhonen) 13. CESA-2007:1045 Moderate CentOS 4 ia64 net-snmp - security update (Pasi Pirhonen) 14. CESA-2007:0969 Moderate CentOS 4 ia64 util-linux - security update (Pasi Pirhonen) 15. CESA-2007:0969 Moderate CentOS 3 i386 util-linux - security update (Tru Huynh) 16. CESA-2007:0969 Moderate CentOS 3 x86_64 util-linux - security update (Tru Huynh) 17. CESA-2007:1013 Critical CentOS 3 i386 samba - security update (Tru Huynh) 18. CESA-2007:1013 Critical CentOS 3 x86_64 samba - security update (Tru Huynh) 19. CESA-2007:1045 Moderate CentOS 3 i386 net-snmp - security update (Tru Huynh) 20. CESA-2007:1045 Moderate CentOS 3 x86_64 net-snmp - security update (Tru Huynh) 21. CESA-2007:1013-01: Critical CentOS 2 i386 samba security update (John Newbigin) 22. CESA-2007:1016 Critical CentOS 4 s390(x) samba - security update (Pasi Pirhonen) 23. CESA-2007:1045 Moderate CentOS 3 ia64 net-snmp - security update (Pasi Pirhonen) 24. CESA-2007:1013 Critical CentOS 3 ia64 samba - security update (Pasi Pirhonen) 25. CESA-2007:0969 Moderate CentOS 3 ia64 util-linux - security update (Pasi Pirhonen) 26. CESA-2007:0737 Moderate CentOS 4 s390(x) pam - security update (Pasi Pirhonen) 27. CESA-2007:0387 Moderate CentOS 4 s390(x) tcpdump - security update (Pasi Pirhonen) ---------------------------------------------------------------------- Message: 1 Date: Thu, 15 Nov 2007 17:52:23 +0200 From: Pasi Pirhonen <upi(a)centos.fi> Subject: [CentOS-announce] CESA-2007:0703 Moderate CentOS 4 ia64 openssh - security update To: centos-announce(a)centos.org Message-ID: <20071115155223.GB18540(a)centos.fi> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory 2007:0703 https://rhn.redhat.com/errata/RHSA-2007-0703.html The following updated files have been uploaded and are currently syncing to the mirrors: ia64: updates/ia64/RPMS/openssh-3.9p1-8.RHEL4.24.ia64.rpm updates/ia64/RPMS/openssh-askpass-3.9p1-8.RHEL4.24.ia64.rpm updates/ia64/RPMS/openssh-askpass-gnome-3.9p1-8.RHEL4.24.ia64.rpm updates/ia64/RPMS/openssh-clients-3.9p1-8.RHEL4.24.ia64.rpm updates/ia64/RPMS/openssh-server-3.9p1-8.RHEL4.24.ia64.rpm -- Pasi Pirhonen - upi(a)iki.fi - http://pasi.pirhonen.eu/ Top-postings silently ignored

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creating rpms for distribution
by Dave 16 Nov '07

16 Nov '07

Hello, I'm wanting to package some software for CentOS 5 which is currently not in rpm form. I was wondering if anyone had done this, if so i'd like to hear from you offlist. I've got a number of questions on this, my eventual goal is to submit them. Thanks. Dave.

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Localize CUPS?
by Niki Kovacs 16 Nov '07

16 Nov '07

Hi, I've been setting up a networked printer in a 100% Linux LAN, and there's only one small problem left: how do I localize the CUPS interface (e. g. the pages I see when opening http://localhost:631 in a browser)? My system is localized in french. LANG is fr_FR.UTF-8 in /etc/sysconfig/i18n. And I checked Firefox: it's supposed to open web content in French. Curiously, I had done similar installs before with Slackware 12, and there, the CUPS interface displayed in french "out of the box", e. g. without specifying it in cupsd.conf. Now IIRC, I had explicitly set a whole bunch of environment variables on my Slackware install (LC_MESSAGES and the likes) to french. 1) Could it be that? 2) Which variable would that be, and where do I set these in CentOS? Slackware's localization variables are all meant to be set in /etc/profile.d/lang.sh. Where is the orthodox place to do that in CentOS? cheers, Niki Kovacs

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NS Question
by Victor Padro 16 Nov '07

16 Nov '07

Hello everyone, I got a question, I'm not new in the linux scene or even a geek, but I am confused about certain stuff regarding Bind, DNS stuff, or whatsoever, maybe it's a silly question. Anyway. About 3 years ago I hired a dedicated server in certain company, for hosting my site and some other sites, didn't work at all the plan I had, nevertheless I was using Redhat 9 or something related to redhat, and using plesk as a control panel at that time, i was able to configure two dns servers on that box using the web interface, ns1.olddomain.com and ns2.olddomain.com using two public different IP addresses (201.56.xx.84, 201.56.xx.86), but now i want to do it without using plesk or even a control panel, now can i do this using CentOS? Maybe a tutorial, a howto could help me do the job, i am trying to migrate/learn more about networking using linux, but essencially how does it work, do i need two eth interfaces, virtual adapters, etc. Any help given will be apreciated. Thank you all. Sorry for my english, btw.

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phpmyadmin on centos 4
by Hiep Nguyen 16 Nov '07

16 Nov '07

hi there, i have a centos box with phpmyadmin installed, but i don't remember how i installed phpmyadmin 2.7.0-pl2. now i want to upgrade it with yum, but i don't find any phpmyadmin on my centos box. i tried: rpm -qa | grep phpmyadmi, but found nothing. is there an easy way to upgrade phpmyadmin? thanks, T. Hiep

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Seeking docbook-to-man package
by Kenneth Porter 16 Nov '07

16 Nov '07

I'm looking for a source RPM for docbook-to-man. I'm trying to build/install pxlib: <http://pxlib.sourceforge.net/installation.php> The tarball is set up to create an RPM, but it fails to convert its SGML documentation to man pages because I'm missing docbook-to-man. I found the latter here: <http://www.oasis-open.org/docbook/tools/dtm/> I'm hoping someone has packaged this and has a source RPM available.

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IO causing major performance issues
by Antonio Varni 16 Nov '07

16 Nov '07

Hello everyone. I'm wondering what other people's experiences are WRT systems becoming unresponsive (unable to ssh in, etc) for brief periods of time when a large amount of IO is being performed. It's really starting to cause a problem for us. We're on Dell PowerEdge 1955 blades - but this same issue has caused us problems on PE1950, PE1850, PE1750 servers. We're running Centos 4.5 right now. I know Centos 5 includes ionice, more io scheduler/elevator selections like deadlock/etc. Perhaps that would fix this issue. We're running the latest PERC firmware. The specific issue I'm referring to at this point is on a system running mysql. All mysql data files are on a netapp filer but mysql's tmp directory is on local disk. Whenever a lot of temp tables are created (and thus written and deleted from local disk quickly) we can't even log in to the machine - and our monitoring system gets all freaked out and we get lots of pages, etc... FYI this is two disks with hardware raid 1. Is it just me? Or is this specific to Dell systems, or is this just the state of the Linux kernel these days? Is there some magical patch I can apply to make this issue go away :) Thanks in advance for any insight into this issue. Antonio -- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ antonio varni [ technology ] ESTALEA, L.P. 629 State Street #222 Santa Barbara, CA 93101 v 805.252.0115 f 805.899.2697 e avarni(a)estalea.com w www.estalea.com

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Re: [CentOS] IO causing major performance issues
by Ross S. W. Walker 16 Nov '07

16 Nov '07

Well the CFQ scheduler tries to do just that, but if the amount of io is overwhelming even it cannot compensate. Writes take longer then reads and for a mirror they have to happen on both drives before they can service another request. I suggest you put the temp database on a tempfs to avoid the problem. Set cfq scheduler on /dev/sda if it isn't already. Other then that you could try a different file system like xfs or jfs to see if that helps. -Ross -----Original Message----- From: centos-bounces(a)centos.org <centos-bounces(a)centos.org> To: CentOS mailing list <centos(a)centos.org> Sent: Thu Nov 15 19:29:20 2007 Subject: RE: [CentOS] IO causing major performance issues Of course IO can swamp the file system. My point is that the kernel should at least give enough time-slices to the other processes (like sshd) so we can still log in. It's not asking a lot from the kernel - to just log in via ssh really. -- _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ antonio varni [ technology ] ESTALEA, L.P. 629 State Street #222 Santa Barbara, CA 93101 v 805.252.0115 f 805.899.2697 e avarni(a)estalea.com w www.estalea.com On Thu, 15 Nov 2007, Ross S. W. Walker wrote: > redhat(a)mckerrs.net wrote: > > Antonio Varni wrote: > > > > > > Hello everyone. > > > > > > I'm wondering what other people's experiences are WRT systems becoming > > > unresponsive (unable to ssh in, etc) for brief periods of time when > > > a large amount of IO is being performed. It's really starting to > > > cause a problem for us. We're on Dell PowerEdge 1955 blades > > > - but this same > > > issue has caused us problems on PE1950, PE1850, PE1750 servers. > > > > > > We're running Centos 4.5 right now. I know Centos 5 includes > > > ionice, more > > > io scheduler/elevator selections like deadlock/etc. Perhaps that would > > > fix this issue. We're running the latest PERC firmware. > > > > > > The specific issue I'm referring to at this point is on a > > > system running > > > mysql. All mysql data files are on a netapp filer but mysql's > > > tmp directory > > > is on local disk. Whenever a lot of temp tables are created (and thus > > > written and deleted from local disk quickly) we can't even > > > log in to the > > > machine - and our monitoring system gets all freaked out and we get > > > lots of pages, etc... FYI this is two disks with hardware raid 1. > > > > > > Is it just me? Or is this specific to Dell systems, or is this just > > > the state of the Linux kernel these days? Is there some magical patch > > > I can apply to make this issue go away :) > > > > > > > > > Thanks in advance for any insight into this issue. > > > > > > Antonio > > > > I have noticed similar behaviour on all sort of linuxes (in > > particular, ssh into the box is really slow when it's doing > > IO) and wondered why, but never really thought about > > investigating any further. > > > > Unfortunately, I do a lot of work with solaris and the funny > > thing is that I have *never* seen a solaris kernel exhibit > > this sort of behaviour. Even if it is installed on normal > > IDE/SATA disks. And, in fact, even if installed on the exact > > same hardware. > > > > > > Now I'm curious.....especially given that I'm right in the > > middle of pushing to get rid of solaris in favour of RHEL. > > It really depends what the system is doing, what services you are > running and how you have it configured. > > You had Solaris installed, what services was it running? > > You had Linux installed, what services was it running? > > Database temp tables and logs can generate an enormous amount of > io which can swamp the file systems of any system. > > I have seen it on Windows and Linux, so I don't see why Solaris > would be any different. > > You could always try a different scheduler to see if that helps, > for instance if you are using 'cfq' try 'deadline'. > > -Ross > > ______________________________________________________________________ > This e-mail, and any attachments thereto, is intended only for use by > the addressee(s) named herein and may contain legally privileged > and/or confidential information. If you are not the intended recipient > of this e-mail, you are hereby notified that any dissemination, > distribution or copying of this e-mail, and any attachments thereto, > is strictly prohibited. If you have received this e-mail in error, > please immediately notify the sender and permanently delete the > original and any copy or printout thereof. > > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > http://lists.centos.org/mailman/listinfo/centos > _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos ______________________________________________________________________ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof.

1 0

Yum update fails
by Aron.Darling＠Emulex.Com 15 Nov '07

15 Nov '07

I updated my centos 4.5 server to centos last week and I am now getting errors when I attempt to do a yum update: [root@AJD-slag ~]# yum update Loading "installonlyn" plugin Plugin "fastestmirror" uses deprecated constant TYPE_INTERFACE. Please use TYPE_INTERACTIVE instead. Loading "fastestmirror" plugin Setting up Update Process Setting up repositories update 100% |=========================| 951 B 00:00 base 100% |=========================| 1.1 kB 00:00 addons 100% |=========================| 951 B 00:00 extras 100% |=========================| 1.1 kB 00:00 Determining fastest mirrors Traceback (most recent call last): File "/usr/bin/yum", line 29, in ? yummain.main(sys.argv[1:]) File "/usr/share/yum-cli/yummain.py", line 94, in main result, resultmsgs = base.doCommands() File "/usr/share/yum-cli/cli.py", line 381, in doCommands return self.yum_cli_commands[self.basecmd].doCommand(self, self.basecmd, self.extcmds) File "/usr/share/yum-cli/yumcommands.py", line 150, in doCommand return base.updatePkgs(extcmds) File "/usr/share/yum-cli/cli.py", line 672, in updatePkgs self.doRepoSetup() File "/usr/share/yum-cli/cli.py", line 104, in doRepoSetup yum.YumBase.doRepoSetup(self, thisrepo=thisrepo) File "/usr/lib/python2.4/site-packages/yum/__init__.py", line 313, in doRepoSetup self.plugins.run('postreposetup') File "/usr/lib/python2.4/site-packages/yum/plugins.py", line 153, in run func(conduitcls(self, self.base, conf, **kwargs)) File "/usr/lib/yum-plugins/fastestmirror.py", line 78, in postreposetup_hook repo.set('urls', repomirrors[str(repo)]) AttributeError: 'YumRepository' object has no attribute 'set' Any suggestions, Google has not been my friend today. Thanks, Aron

3 3

sdc1 without the sdc
by Scott Moseman 15 Nov '07

15 Nov '07

So I'm working with the iSCSI Initiator and an EqualLogic SAN. I'm not sure when this might have happened, but it appears that the /dev/sdc device is missing, yet the /dev/sdc1 partition exists AND is mountable. Is there a method to re-create the /dev/sdc device? I cannot dd or fdisk it, obviously, but I can mount the /dev/sdc1 partition and it works just fine. Not having the /dev/sdc is messing up my multipath setup (let alone whatever else might be affected). scsi3 : SFNet iSCSI driver Vendor: EQLOGIC Model: 100E-00 Rev: 2.3 Type: Direct-Access ANSI SCSI revision: 05 SCSI device sdc: 8417280 512-byte hdwr sectors (4310 MB) SCSI device sdc: drive cache: write through SCSI device sdc: 8417280 512-byte hdwr sectors (4310 MB) SCSI device sdc: drive cache: write through sdc: sdc1 Attached scsi disk sdc at scsi3, channel 0, id 0, lun 0 # ls -l /dev/sdc* brw-rw---- 1 root disk 8, 33 Nov 7 14:45 /dev/sdc1 Thanks, Scott

2 5

Installing skype in CentOS 5
by Andrew Allen 15 Nov '07

15 Nov '07

Having just upgraded my system from CentOS 4.4 to 5.0, I'm a bit disappointed that I still can't install skype from the skype repo using yum - when I try yum install skype, I end up with: libsigc++20-2.0.17-1.el5. 100% |=========================| 217 kB 00:13 ---> Package libsigc++20.i386 0:2.0.17-1.el5.rf set to be updated --> Running transaction check --> Processing Dependency: qt4-x11 >= 4.2 for package: skype --> Finished Dependency Resolution Error: Missing Dependency: qt4-x11 >= 4.2 is needed by package skype Any ideas please as to how this can be overcome so that I can install and run this very useful utility? Andy

4 13

central logging/analysis
by Johnny Tan 15 Nov '07

15 Nov '07

I'm interested in doing centralized logging & analysis of logs from my CentOS boxes. I messed around with syslog-ng and it seems like it's a better syslog. But I noticed most of the "usual suspects" of third-party repo maintainers (Dag, Axel, etc.) don't include it. Karanbir has an el4 version, but all my boxes are CentOS 5. I was going to go ahead and roll my own RPM (or, rather, rebuild Karanbir's el4 version), but it occurred to me to check what others were using in this space. Just sticking with plain old syslogd? Paying for splunk? Is there something else I haven't heard about? johnn

3 3

FTP with web interface
by Ugo Bellavance 15 Nov '07

15 Nov '07

Hi, I'm looking for a simple way to be able to administer ftp accounts on Centos4 (or 5, if needed). The best would be to have a web interface to do so, but I think I'd rather avoid using webmin... I've seen some tutorials for getting ftp servers to work with MySQL DBs, but I'd like to know how people are working. I'd like to have a separate set of users for ftp than for system. Thanks, -- Ugo Bellavance

4 3

IP range of Google Analytics server farm
by Simon Jolle 15 Nov '07

15 Nov '07

Hi Centos Users I would like to allow outgoing traffic to Google Analytics servers (destination port 80). I wish to do a iptables rule. How to whitelist all Google Analytics servers? cheers Simon -- XMPP: sjolle(a)swissjabber.org

3 3

Nagios on CentOS 4.5
by Jason Ross 15 Nov '07

15 Nov '07

First off I am a linux / CentOS newbies so go easy on me. Just curious if anyone out there is running Nagios on CentOS 4.5. I have now installed it on a second server due to issue but the issues have come back to haunt me. The OS is running on an IBM NetVista. Every thing in both installs is identical as are the problems. Once I have Nagios up and monitoring every thing hangs. Even a terminal will hang before it finally just locks up. The only thing that brings it back is a reboot. Even stopping the services doesn't work. Disk space seems fine and even during the hangs there doesn't seems to be anything taking up a tremendous amount of resources. After a reboot every thing works fine for several hours. Any guesses or suggestions? Jason Ross

6 11

AW: [CentOS] Linux PDA/smartphone sync?
by Marc R. 15 Nov '07

15 Nov '07

Hi Ugo, Maybe "Funambol" could do the job :-) Many Devices will work with this Software, But i'm unsure if your Device will work. For Details you should have a closer look to: http://www.funambol.com/opensource/ Regards, Marc Rebischke ----- Ursprüngliche Nachricht ----- Von: Ugo Bellavance <ugob(a)lubik.ca> Gesendet: Mittwoch, 14. November 2007 22:13 An: centos(a)centos.org Betreff: [CentOS] Linux PDA/smartphone sync? Hi, I think I'll finally be able to move away from windows... I just installed linux and I'm wondering what people use as smartphones/PDA. I currently use a motorola V710 phone, which allows me to sync my contacts and calendar, which is all I need. I may change it soon, so I'd like to know what is best to work with linux (I use evolution right now, connected to an exchange (eventually scalix) server). I'm trying to get moto4linux to work, but I'm not even sure if I'll be able to sync my calendar + contacts with this. Any advice? Regards, -- Ugo Bellavance _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos

1 0

OT: Scripting with sudo password
by James A. Peltier 15 Nov '07

15 Nov '07

Completely off topic, but I'm sure someone out there is using scripts that require a sudo password of some sort, so I'll ask. What are people doing to automate tasks that required sudo passwords in order to run? sudo without a password is not an option for me, but I would like to be able to enter the password once have it saved and then read back when sudo is required. something like run_on_all_hosts perform_sudo_command script prompts for password script lauches on all hosts and passes password when required. Any examples? -- James A. Peltier Technical Director, RHCE SCIRF | GrUVi @ Simon Fraser University - Burnaby Campus Phone : 778-782-3610 Fax : 778-782-3045 Mobile : 778-840-6434 E-Mail : jpeltier(a)cs.sfu.ca Website : http://gruvi.cs.sfu.ca | http://scirf.cs.sfu.ca MSN : subatomic_spam(a)hotmail.com

7 9

Linux PDA/smartphone sync?
by Ugo Bellavance 15 Nov '07

15 Nov '07

Hi, I think I'll finally be able to move away from windows... I just installed linux and I'm wondering what people use as smartphones/PDA. I currently use a motorola V710 phone, which allows me to sync my contacts and calendar, which is all I need. I may change it soon, so I'd like to know what is best to work with linux (I use evolution right now, connected to an exchange (eventually scalix) server). I'm trying to get moto4linux to work, but I'm not even sure if I'll be able to sync my calendar + contacts with this. Any advice? Regards, -- Ugo Bellavance

2 1

rsync problem
by Scott Moseman 14 Nov '07

14 Nov '07

I have a simple script that sends one file to two locations on the same destination server. Here's the code: DEST="remotehost" SRC="/home/boss/application.conf" DST1="/home/user1/application.conf" DST2="/home/user2/application.conf" RSYNC1=`rsync -caW -e ssh $SRC $DEST:$DST1` RSYNC2=`rsync -caW -e ssh $SRC $DEST:$DST2` This runs every 5 minutes. What I'm seeing is the first location occasionally gets a *partial* file, but the second location never has a problem. There does not appear to be any obvious correlation to why this would be happening. I have never witnessed the problem when running the script by hand to try and duplicate, witness any error output, etc. Any idea how to troubleshoot? Or how I can get rsync to verify the file has been transferred without error? A more reliable alternative than using rsync for this situation? Thanks, Scott

2 2

OT: Slow browsers or slow connections?
by Mark Hull-Richter 14 Nov '07

14 Nov '07

I have AT&T (formerly SBC) DSL for my primary internet connection here, and tonight it has been exceptionally, extraordinarily S - L - O - W.... Pages that normally load in, at most, seconds, are taking several minutes to locate, even common, frequent access pages like Google, Gmail, etc. I called AT&T, of course, and all they know about is IE, which, as you can probably guess, I rarely use. Normally I use SeaMonkey, with Firefox as a last ditch backup, on the Linux side, and SeaMonkey in my Windows VM-guest, with IE as the absolute last ditch backup. I tried their on-the-phone-quick-fix and turned off my modem and router for the recommended 20 seconds (more like 30), and this did no good as far as I could see. (The router is for convenience when I need multiple connections - typically, as now, this is the only computer connected to it.) However, I played along with their "support" person (they need more support than they give out...), and their suggestion was to go into IE (groan, double groan to fire up the Windows VM guest), delete all cookies, delete all files, and clear the history. Funny thing is, that worked - for IE. So, I go back to my CentOS SeaMonkey and clear the cache and the history. I'm not sure what else to do, though, because that didn't solve the problem, and Firefox is as slow as my SeaMonkey. Any suggestions? Are there corollaries to IE's "files" for SM or Ff? Thanks. mhr

10 16

RE: [centos] how to know when files have finished ftping? --antairrestored
by Colht, Charles 14 Nov '07

14 Nov '07

Just to chime in here, what I use is another file that is transferred last. It can be zero sized. Just some name you look for and then delete when you are done for next time. It doesn't matter how long that one takes because you will know that the important files are already transferred. chuck -----Original Message----- From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On Behalf Of Neil Aggarwal Sent: Monday, November 12, 2007 7:28 AM To: 'CentOS mailing list' Subject: RE: [centos] how to know when files have finished ftping? --antairrestored Geoff: I used lsof. Thanks everyone for the suggestions. Neil -- Neil Aggarwal, (832)245-7314, www.JAMMConsulting.com Eliminate junk email and reclaim your inbox. Visit http://www.spammilter.com for details. > Here's a thought: what about doing an lsof? If a file is > still being written by ftpd it should be open for writing. _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos *********************************************************************************** This transmittal may contain confidential information intended solely for the addressee. If you are not the intended recipient, you are hereby notified that you have received this transmittal in error; any review, dissemination, distribution or copying of this transmittal is strictly prohibited. If you have received this communication in error, please notify us immediately by reply or by telephone (collect at 907-297-3000) and ask to speak with the message sender. In addition, please immediately delete this message and all attachments. Thank you. ACS

4 3

mirrors.kernel.org path change...
by John R Pierce 14 Nov '07

14 Nov '07

minor thing, the URL has changed for the mirrors.kernel.org rsync... its now.. rsync://mirrors.kernel.org/mirrors/centos or mirrors.kernel.org::mirrors/centos (previously, it was rsync://mirrors.kernel.org/centos ) this probably should be updated on http://www.centos.org/modules/tinycontent/index.php?id=13

1 0

Pre-built kernel 2.6.20 for CentOS 5?
by Kevin Thorpe 14 Nov '07

14 Nov '07

Can anyone point me towards a pre-built kernel 2.6.20 for CentOS 5? I need the later version to run Yosemite backup. I thought I was being clever and installed a Fedora kernel and it worked 99%, sadly the bit that didn't was the tape device which rather spoiled things. thanks, Kevin Thorpe

7 10

Re: [CentOS] configuring sendmails domain
by Ross S. W. Walker 14 Nov '07

14 Nov '07

Look at submit.mc for email sent from localhost. -Ross -----Original Message----- From: centos-bounces(a)centos.org <centos-bounces(a)centos.org> To: centos(a)centos.org <centos(a)centos.org> Sent: Tue Nov 13 21:31:28 2007 Subject: [CentOS] configuring sendmails domain > > ----- Original Message ----- > From: "Jerry Geis" <geisj at pagestation.com <http://lists.centos.org/mailman/listinfo/centos>> > To: "CentOS ML" <centos at centos.org <http://lists.centos.org/mailman/listinfo/centos>> > Sent: Wednesday, November 14, 2007 12:11:02 PM (GMT+1000) Australia/Brisbane > Subject: [CentOS] configuring sendmails domain > > I tried editing sendmail.cf and changing the Dj line to X.com > so any email originating from my machine would be X.com not m.X.com > where m is machine name. > > I typed make in the /etc/mail directory and did service sendmail restart. > > This did not work. email still shows as m.X.com > > What am I missing so as to NOT have the machine name in the email address. > I just want the domain. > > Thanks, > > Jerry > _______________________________________________ > CentOS mailing list > CentOS at centos.org <http://lists.centos.org/mailman/listinfo/centos> > http://lists.centos.org/mailman/listinfo/centos > > -- > This message has been scanned for viruses and > dangerous content by MailScanner, and is > believed to be clean. > > > > > Editing the .cf file is not the way to do this sort of thing. Ensure you have the sendmail-cf package installed and make your changes to the /etc/mail/sendmail.mc file and then type 'make' to build the new .cf. Then restart sendmail. > > > Incidentally, the .mc file has the necessary parameters in it that you may be looking for; > > > dnl MASQUERADE_AS(`mydomain.com')dnl > dnl # > dnl # masquerade not just the headers, but the envelope as well > dnl # > dnl FEATURE(masquerade_envelope)dnl > dnl # > dnl # masquerade not just @mydomainalias.com, but @*.mydomainalias.com as well > dnl # > dnl FEATURE(masquerade_entire_domain)dnl > dnl # > dnl MASQUERADE_DOMAIN(localhost)dnl > dnl MASQUERADE_DOMAIN(localhost.localdomain)dnl > dnl MASQUERADE_DOMAIN(mydomainalias.com)dnl > dnl MASQUERADE_DOMAIN(mydomain.lan)dnl > > > I changed all the above to my X.com domain removed the dnl's on the line did a make in the /etc/mail directory, did service sendmail restart and I still get m.X.com and not just X.com What am I still missing something? Thanks, Jerry _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos ______________________________________________________________________ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof.

1 0

yum hangs when installing uucp
by Dave 14 Nov '07

14 Nov '07

Hello, I've got a CentOS 5 box. I want to install the uucp rpm to give access to the cu command. I do a yum -y install uucp and yum is hanging on the transaction test. I get the file downloaded fine, but on transaction test yum freezes and i have to kill it's pid to stop it. Any ideas? I'm looking for a program for serial terminals. Thanks. Dave.

3 2

Need advice on storage
by boisvert.guy＠videotron.ca 14 Nov '07

14 Nov '07

Hi all, I have a CentOS 4.5 server running on a workstation mainboard (PCI Slots only). We have now one 200 Gigs IDE disk dedicated for e-mail server storage. We use Communigate Pro and the server has 45 Outlook clients with the MAPI connector (All mailboxes on the server). When a user opens Outlook, a refresh of the local cache is performed for his data. There is a big "Public" area (about 50 Gigs) where all the projects data/infos are stored (all that on the same IDE hard disk). Clients cache updates are performed on e-mail folder access. We noticed server response slowdown as the number of user increased (quite normal!). Now we want to upgrade the server to get better performance. I'd like to know if, as a temporary cheap upgrade, software RAID with a Sil 3124 and 2 x Raptor WD740ADFD (74 Gigs with NCQ) in Software RAID 0 would bring a significant performance boost. If it is the case, that would permit to phase out this server in 1-2 years and we'd upgrade the whole server after.Here a the specs of the actual "server":Asus A7V600 (I know, that's bad but it just works!!!)Athlon 2500+1 Gig RAM (we'll probably put 1 more gig soon if it can help)System Hard Disk: WD 80 GigsMail hard disk: Western Digital WD2000JB (IDE 200 Gigs) EXT3 on LVMBackups hard disk: 1 x 200 Gigs IDE, 1 x 320 Gigs SATA, 1 x 750 Gigs SATA --> LVM Total of 1270 GigsAny help / experience would be appreciated.TIA,Guy Boisvert

7 15

Re: [CentOS] Need advice on storage
by Ross S. W. Walker 14 Nov '07

14 Nov '07

If you are seeing iowaits that high then something needs to be done. You CAN gain performance by striping, but the downtime due to disk failure can make your decision making skills look flawed. For a mail server I highly recommend RAID10 and drives with high RPM so you get better random io performance as 99% of io on a mail home server will be random io and while regular SATA drives would be ok for a file server which is mostly sequential they will stack up io waits on a busy mail or database server. The raptors are costly because they run at 10k rpm and have low seek times, this gives them much better random io performance, but sequential io is the same with regular SATA drives. In fact sequential io performance is almost identical between 7200rpm SATA and 15000rpm SAS the real difference is in random io where the 15k drives are 2x faster (1.2MB of 4k random ios a second versus 640KB of 4k random ios a second, unbuffered). If you have an external enclosure then that will help, but make sure the array is compatible with the drives you want. SATA disks cannot go into a SCSI array, though some SAS enclosures and controllers allow you to mix SAS and SATA drives (LSI is one). Performance can trump size here so if the choice is between 200GB 7200 rpm SATA drives or 72GB 15000rpm SAS drives, if your data fits onto the 72GB drives (probably 140GB if in a 4 drive RAID10) go with the 72GB drives (taking growth into consideration too). Hardware RAID can help too if you utilize onboard battery backed up write-back cache. The more write-back cache the better, just make sure it is battery backed up (BBU). -Ross -----Original Message----- From: centos-bounces(a)centos.org <centos-bounces(a)centos.org> To: CentOS mailing list <centos(a)centos.org> Sent: Tue Nov 13 01:58:27 2007 Subject: Re: [CentOS] Need advice on storage ----- Message d'origine ----- De: Kenneth Price <kprice(a)nowyouknow.net> Date: Lundi, Novembre 12, 2007 10:58 pm Objet: Re: [CentOS] Need advice on storage À: CentOS mailing list <centos(a)centos.org> > > You've already received a few responses about reconfiguring your > entireserver, so I'll avoid that route and simply answer your > question straight. > > "No" > > There will not be a "significant" performance boost striping > only 2 drives. > The 10K RPM Raptors alone will definitely increase performance, > but there > is little/no real advantage striping them together. Getting any > significant performance increase from a RAID array really > requires at > *least* 4 drives ... the more the merrier ... although I'll > probably catch > some flack from that statement. :-) > > A previous poster mentioned increasing your RAM from 1Gb to 2Gb. > That was > an excellent idea and should be done in parallel with whatever drive > changes you make. > > Regards, > Ken > > Thanks Ken. That's a good thing to know that software striping won't really boost performance, i then won't waste money on that avenue. I cannot explain why as i don't know about Linux drivers architecture and general system low level behavior but maybe somebody on this list could give us a clue. As i said on my previous post, i found that the server is inside a rack that has a VTRAK 15100 SCSI to SATA Enclosure with a free SCSI bus (the unit has 2 independant bus) and hard disk slots. I think we have a spare Adaptec 39160 so if it's the case, i could go with this solution and buy 4 x WD 250 Gigs "YS" (RAID) serie drives @ about 75$ each and put all this in RAID 10. The unit supports NCQ. It remains to be seen how well it can perform even if they are talking about "up to 200 MBps". Regards, Guy Boisvert ______________________________________________________________________ This e-mail, and any attachments thereto, is intended only for use by the addressee(s) named herein and may contain legally privileged and/or confidential information. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution or copying of this e-mail, and any attachments thereto, is strictly prohibited. If you have received this e-mail in error, please immediately notify the sender and permanently delete the original and any copy or printout thereof.

2 1

CentOS-announce Digest, Vol 33, Issue 10
by centos-announce-request＠centos.org 14 Nov '07

14 Nov '07

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-2007:0961 Moderate CentOS 4 ia64 ruby - security update (Pasi Pirhonen) 2. CESA-2007:0961 Moderate CentOS 4 s390(x) ruby - security update (Pasi Pirhonen) 3. CESA-2007:0961 Moderate CentOS 4 i386 ruby - security update (Johnny Hughes) 4. CESA-2007:0961 Moderate CentOS 4 x86_64 ruby - security update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Tue, 13 Nov 2007 15:51:34 +0200 From: Pasi Pirhonen <upi(a)centos.fi> Subject: [CentOS-announce] CESA-2007:0961 Moderate CentOS 4 ia64 ruby - security update To: centos-announce(a)centos.org Message-ID: <20071113135134.GZ18540(a)centos.fi> Content-Type: text/plain; charset="us-ascii" CentOS Errata and Security Advisory 2007:0961 https://rhn.redhat.com/errata/RHSA-2007-0961.html The following updated files have been uploaded and are currently syncing to the mirrors: ia64: updates/ia64/RPMS/irb-1.8.1-7.EL4.8.1.ia64.rpm updates/ia64/RPMS/ruby-1.8.1-7.EL4.8.1.ia64.rpm updates/ia64/RPMS/ruby-devel-1.8.1-7.EL4.8.1.ia64.rpm updates/ia64/RPMS/ruby-docs-1.8.1-7.EL4.8.1.ia64.rpm updates/ia64/RPMS/ruby-libs-1.8.1-7.EL4.8.1.ia64.rpm updates/ia64/RPMS/ruby-mode-1.8.1-7.EL4.8.1.ia64.rpm updates/ia64/RPMS/ruby-tcltk-1.8.1-7.EL4.8.1.ia64.rpm -- Pasi Pirhonen - upi(a)iki.fi - http://pasi.pirhonen.eu/ Top-postings silently ignored

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printing problem
by umair shakil 14 Nov '07

14 Nov '07

Salam, I am using CentOs 4.4, i have network printer with ip 192.168.1.88. when i click the option to print document, it seems everything is OK, printer shows with bliking of Data light but no print..... what i am missing??? Regards, Umair Shakil ETD

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freenx
by Michael Oevermann 14 Nov '07

14 Nov '07

Hello, I am having problems getting freenx running in CentOS 4.5 i386_64. I know this is not a new problem, however, I havn't found a solution in all the postings I found on the web. I did exactly what is supposed to work and described in detail at http://wiki.centos.org/HowTos/FreeNX After doing that I can connect to the server with nxcleint without problem but I get only a black screen. In the files .nx/S.../session and errors I see the warning Warning: Unrecognized session type 'unix-gnome'. Assuming agent session. The same happens with KDE. With the command nxloadconfig --check I get the output Warning: Could not find nxdesktop in /usr/bin. RDP sessions won't work. Warning: Could not find nxviewer in /usr/bin. VNC sessions won't work. Warning: Invalid value "APPLICATION_LIBRARY_PRELOAD=/usr/lib/ libX11.so.6.2:/usr/lib/libXext.so.6.4:/usr/lib/libXcomp.so.2:/usr/lib/ libXcompext.so:/usr/lib/libXrender.so.1.2". /usr/lib/libX11.so.6.2 could not be found. Users will not be able to run a single application in non-rootless mode. Warning: Invalid value "COMMAND_FOOMATIC=/usr/lib/cups/driver/ foomatic-ppdfile" Users will not be able to use foomatic. Warning: "/usr/lib/cups/backend/nxipp" is not executable. Users will not be able to enable printing. Warning: "/usr/lib/cups/backend/smb" is not executable. Users will not be able to enable printing. Warning: Invalid value "COMMAND_START_CDE=cdwm" Users will not be able to request a CDE session. Warning: Invalid cupsd version of "/usr/sbin/cupsd". Need version 1.2. Users will not be able to enable printing. Error: Could not find 1.5.0 or 2.[01].0 or 3.0.0 version string in nxagent. NX 1.5.0 or 2.[01].0 or 3.0.0 backend is needed for this version of FreeNX. Errors occured during config check. Please correct the configuration file. The libraries are definitely not where nx looks for them - they are located at /usr/lib64/NX/lib (and symlinks under (usr/lib/NX/lib). What is going wrong here? I also tried to use nxconfig with --setup- nomachine-key with the same results, except that I did not need to import the key in the nxclient anymore. Does anyone has an idea to solve the problem? Many thanks for help Michael

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configuring sendmails domain
by Jerry Geis 14 Nov '07

14 Nov '07

I tried editing sendmail.cf and changing the Dj line to X.com so any email originating from my machine would be X.com not m.X.com where m is machine name. I typed make in the /etc/mail directory and did service sendmail restart. This did not work. email still shows as m.X.com What am I missing so as to NOT have the machine name in the email address. I just want the domain. Thanks, Jerry

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Sso the Linux way?
by Jason Pyeron 14 Nov '07

14 Nov '07

So I was googling around about this over the last week and here is what I found: nis/yp is for some reason bad. Kerbos is holy, but no how-to's that don't involve windows and active directory. What is the recommended sso approach for centos? Where are there examples / docs to follow? Jason -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- - - - Jason Pyeron PD Inc. http://www.pdinc.us - - Sr. Consultant 10 West 24th Street #100 - - +1 (443) 269-1555 x333 Baltimore, Maryland 21218 - - - -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- This message is for the designated recipient only and may contain privileged, proprietary, or otherwise private information. If you have received it in error, purge the message from your system and notify the sender immediately. Any other use of the email by you is prohibited.

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