Discuss January 2010

discuss@lists.centos.org

296 participants
322 discussions

Monitoring Dynamic IPs using Some network monitoring tool
by Rajagopal Swaminathan 04 Jan '10

04 Jan '10

Greetings, I have one centos server for network monitoring. there are remote devices which are connected through ADSL lines and hence Dynamic IPs Q1. Is there any tool which is capable of handling this type of situation? Q2. Is there a workaround for this problem Regards Rajagopal

6 14

Tiny webserver to run as root
by RedShift 03 Jan '10

03 Jan '10

Hi all Does anyone have a suggestion for some software, a tiny webserver that is able to run as root and execute CGI scripts? It should be smaller than apache and preferably even smaller than lighttpd. It doesn't need a whole lot of features, it only needs to be able to execute CGI scripts. I have tried a few: nanoweb (which is written in php as well) but has some problems with CGI scripts and when it runs in multi process mode it brings the system load up to exactly 1.00. Nullhttpd, but it's old and unmaintained. Tinyhttpd isn't up for the job as well (kept crashing at times). Thanks, Best regards, Glenn

4 3

Setting CDROM parms
by Robert 03 Jan '10

03 Jan '10

My apologies in advance for asking such an elementary question. I called myself searching the Installation Guide and Deployment Guide, with no success. The situation is that I bought a Lite-On ATAPI iHAP122 that will not burn DVDs unless I use hdparm to turn dma off. I bought that drive because it was a rare beige drive. Until I can find a decent DVD burner and/or get a Windows machine put together strictly for doing BIOS updates, running with dma disabled seems to be the best solution. (hdparm -d0 /dev/hdb ) So, my question is, where should I script the command without having to become root each time I wat to burn a DVD? 2.6.18-164.9.1.el5PAE #1 SMP Tue Dec 15 21:41:47 EST 2009 i686 athlon i386 GNU/Linux This is how it always fails: [rj@madeleine ~]$ growisofs -dvd-compat -Z /dev/hdb=/home/rj/KNOPPIX_V6.2DVD-2009-11-18-EN.iso Executing 'builtin_dd if=/home/rj/KNOPPIX_V6.2DVD-2009-11-18-EN.iso of=/dev/hdb obs=32k seek= 0' /dev/hdb: "Current Write Speed" is 16.4x1352KBps. :-[ WRITE@LBA=30h failed with SK=4h/ASC=08h/ACQ=03h]: Input/output error :-( write failed: Input/output error /dev/hdb: flushing cache /dev/hdb: updating RMA /dev/hdb: closing disc [rj@madeleine ~]$

2 2

reading -- and editing -- ebooks
by ken 03 Jan '10

03 Jan '10

Last week I bought a couple books, not ebooks. I considered buying the ebook, but don't want to need a special device/appliance to read it. I'd much prefer to read ebooks on the Linux (CentOS) machine I'm already using. Also, I'd like to be able to programmatically convert the ebook into a format I can edit myself, e.g., HTML. I have no experience owning or purchasing ebooks. Could people who have clue me in on how they work and if the above is possible. Thanks much. -- Without music, life would be a mistake. --Friedrich Nietzsche

3 5

kickstart and logins.def question
by Kwan Lowe 03 Jan '10

03 Jan '10

Hello all: Happy New Year to everyone and thank you for all the knowledge this past year. I have a hopefully simple question about kickstart. In the authconfig section I can enable ldap, credential caching, etc.. Using the GUI tool there's an option to create the user home directories on first login. The docs don't show a similar option for authconfig in kickstart. For now I'm using a sed script in the %post section of the kickstart to replace the entry in /etc/login.defs, but was curious if there is a standard method via a system utility to change this option.

2 3

Sparc?
by Slack-Moehrle 03 Jan '10

03 Jan '10

My 12 year old wants to learn more about servers and has memorized a lot of commands like ls, chmod, du, etc. He wants to have his own domain and server on the web and I have enough Static IP's, so why not foster this interest. I have an old ultra sparc 5. Are there any CentOS versions that support Sparc? Or recommendations? I know OpenBSD does, but I am more versed in Solaris and versions like Slackware or CentOS or Ubuntu. He also says that ZFS rules all and is pissed Apple did not adopt it. Kids will be kids! -Jason

10 19

chroot problem.
by Frank M. Ramaekers 03 Jan '10

03 Jan '10

First, I'm trying to following along on a document on "SecurityFocus" on "Securing MySQL: step-by-step". I'm on step 3.8 "Test the configuration". I have my CHROOT directory structure setup and the chrootuid is failing (haven't figured that one out, yet). So, I simply tried a 'chroot /chroot/mysql' and got: chroot: cannot run command `/bin/bash': No such file or directory I realized that the documentation didn't cover this so I simply: cp -a /bin/bash /chroot/mysql/bin I'm still getting the same error message when I try 'chroot /chroot/mysql': # chroot /chroot/mysql chroot: cannot run command `/bin/bash': No such file or directory It's there, I'm not sure what the problem is: # ls -l /bin/bash -rwxr-xr-x 1 root root 859120 Oct 24 2008 /bin/bash # ls -l /chroot/mysql/bin/bash -rwxr-xr-x 1 root root 859120 Oct 24 2008 /chroot/mysql/bin/bash (I'm performing this as root, since the mysql userid cannot login.) Ideas? Frank M. Ramaekers Jr. Systems Programmer MCP, MCP+I, MCSE & RHCE American Income Life Insurance Co. Phone: (254)761-6649 1200 Wooded Acres Dr. Fax: (254)741-5777 Waco, Texas 76710 _____________________________________________________ This message contains information which is privileged and confidential and is solely for the use of the intended recipient. If you are not the intended recipient, be aware that any review, disclosure, copying, distribution, or use of the contents of this message is strictly prohibited. If you have received this in error, please destroy it immediately and notify us at PrivacyAct(a)ailife.com.

5 6

I thought Y2K was over with?
by Gilbert Sebenste 03 Jan '10

03 Jan '10

Apparently not. On a command line, type: date '+%G' First Spamassassin's bug (now fixed, type "sa-update" as user root), and now this... ******************************************************************************* Gilbert Sebenste ******** (My opinions only!) ****** *******************************************************************************

3 3

questions on debuginfo.centos.org
by Ryan J M 02 Jan '10

02 Jan '10

Recently I add a debuginfo repo into my /etc/yum.repos.d/ <start> [debuggery] name=CentOS-$releasever - DebugInfo baseurl=http://debuginfo.centos.org/$releasever/$basearch/ priority=1 <end> then yum update and list shows <start> kdiff3.i386 0.9.92-14.el5 epel kding.i386 0.4.3-1.el5.rf rpmforge kdirstat.i386 2.5.2-2.el5.rf rpmforge kdnssd-avahi.i386 0.1.3-0.1.20060713svn.fc6 base kdnssd-avahi-debuginfo.i386 0.1.3-0.1.20060713svn.el5.centos debuggery kdnssd-avahi-devel.i386 0.1.3-0.1.20060713svn.fc6 base kernel-PAE.i686 2.6.18-164.9.1.el5 updates kernel-PAE-debuginfo.i686 2.6.18-92.1.6.el5.centos.plus debuggery kernel-PAE-devel.i686 2.6.18-164.9.1.el5 updates kernel-debug.i686 2.6.18-164.9.1.el5 updates kernel-debug-debuginfo.i686 2.6.18-92.1.6.el5 debuggery kernel-debug-devel.i686 2.6.18-164.9.1.el5 updates kernel-debuginfo.i686 2.6.18-92.1.6.el5.centos.plus debuggery kernel-debuginfo-common.i686 2.6.18-92.1.6.el5.centos.plus debuggery kernel-doc.noarch 2.6.18-164.9.1.el5 updates kernel-xen.i686 2.6.18-164.9.1.el5 updates kernel-xen-debuginfo.i686 2.6.18-92.1.6.el5.centos.plus debuggery kernel-xen-devel.i686 2.6.18-164.9.1.el5 updates kerneloops.i386 0.11-1.el5.rf rpmforge kexec-tools.i386 1.102pre-77.el5.3 updates kexec-tools-debuginfo.i386 1.102pre-21.el5 debuggery keychain.noarch 2.6.8-1.el5.rf rpmforge <end> I notice that the kernel debuginfo version mismatch with my currenting running kernel, then I go to the site http://debuginfo.centos.org/5/i386/ , and there do exist the following ones : <start> [ ] kernel-debuginfo-2.6.18-128.el5.centos.plus.i686.rpm 01-Apr-2009 13:57 175M [ ] kernel-debuginfo-2.6.18-164.2.1.el5.i686.rpm 30-Sep-2009 20:17 166M [ ] kernel-debuginfo-2.6.18-164.6.1.el5.centos.plus.i686.rpm 04-Nov-2009 17:24 186M [ ] kernel-debuginfo-2.6.18-164.6.1.el5.i686.rpm 04-Nov-2009 01:43 166M [ ] kernel-debuginfo-2.6.18-164.9.1.el5.centos.plus.i686.rpm 16-Dec-2009 19:28 186M [ ] kernel-debuginfo-2.6.18-164.9.1.el5.i686.rpm 16-Dec-2009 05:27 166M [ ] kernel-debuginfo-2.6.18-164.el5.i686.rpm 03-Sep-2009 10:54 166M <end> Here comes my `uname -a` <start> Linux xas 2.6.18-164.9.1.el5 #1 SMP Tue Dec 15 21:04:57 EST 2009 i686 i686 i386 GNU/Linux <end> and my yum install log <start> root@xas~ > yum install kernel-debuginfo\* Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * epel: ftp.kddilabs.jp * rpmforge: ftp-stud.fht-esslingen.de Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package kernel-debuginfo.i686 0:2.6.18-92.1.6.el5.centos.plus set to be updated ---> Package kernel-debuginfo-common.i686 0:2.6.18-92.1.6.el5.centos.plus set to be updated --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: kernel-debuginfo i686 2.6.18-92.1.6.el5.centos.plus debuggery 165 M kernel-debuginfo-common i686 2.6.18-92.1.6.el5.centos.plus debuggery 29 M Transaction Summary ================================================================================ Install 2 Package(s) Update 0 Package(s) Remove 0 Package(s) Total download size: 194 M Is this ok [y/N]: y Downloading Packages: (1/2): kernel-debuginfo-common-2.6.18-92.1.6.el5.centos. | 29 MB 03:35 (2/2): kernel-debuginf (35%) 23% [==- ] 147 kB/s | 40 MB 14:36 ETA <end> So, Is it the problem of debuginfo.centos.org/5/repodata or I missed anything? Thanks and HAPPY NEW YEAR! -- FIXME if it is wrong.

1 1

need to free space on a root partition.
by Yan Yu 02 Jan '10

02 Jan '10

Hello, there, Happy new year everyone! I am puzzled here. Could some expert help me shed some light on this? this may not be a centos specific Q.. i have a linux machine. and the root partition (/) is full.. so I moved a dir from /data to /var (/var is on a different partition), and created a link from /data/fa to /var/xyz, the files under /var/xyz is about 8G, du /var/fa 8701248 /var/fa so I thought this should free some space for me, but when I used df, it gave me similar results before and after the move.. and my rpm installation would fail due to the lack of space.. Filesystem 1K-blocks Used Available Use% Mounted on /dev/cciss/c0d0p6 15235040 15232452 0 100% / /dev/cciss/c0d0p8 other partitions have free space.... I was confused on why moving a 8G file to another partition did not free some space for me? and I did see that the disk usage for the destination partition/disk increases after the move.. any pointer is appreciated! yan

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Discuss January 2010