Discuss October 2006

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260 participants
296 discussions

4.4 versas AS and ES
by Gregory P. Ennis 01 Nov '06

01 Nov '06

Everyone, I am a new user of Centos and have started the process of becoming informed as to what centos can do. Sorry to ask a simple question but can you tell me where centos 4.4 compares with Red Hat Enterpres AS or ES? Thanks, Greg Ennis

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CentOS 4.3 on Intel Xeon Core 2 Duo
by Marc Saric 01 Nov '06

01 Nov '06

Dear list, I am planning to buy a new server -because the new Core2 Duo based Xeons (5100 series) are considerably faster in some scenarios than Opteron machines while not beeing more expensive, I would like to hear some real-world experiences from people who have installed CentOS 4.3 or 4.4 on such a setup. Specifically: CPU: 2x Intel Xeon 5100 2GHz Board: Intel S5000 chipset RAID5: 3ware 9550SXU-4LP I have some experience with the 3ware Adapter (new kernel module needed on install) but now nothing about compatibility, extra drivers or other problems related to the relatively new Xeon/S5000 platform and CentOS 4.3/RHEL 4.3. Thanks for any feedback. -- Bye, Marc Saric

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Cluster Help
by Sherwyn Greene 01 Nov '06

01 Nov '06

Hi All, Need some information on getting the right storage array to buy for my cluster configuration can anyone help me with this my Setup so far 2 Athlon 2800 Sempron System 1 Wti Network power switch 1 24 Port 10/100 Cat5 switch 2 Adaptec 39160 scsi host adapter pci cards installed in the systems. I need to know what is the best storage solution with this configuration Thanks Sherwyn Greene Planner / I.T. Technician Project Controls Dept. Kentz-OJ's E&I Services J.V. +1 (868) 648-0876

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glibc free error rebuilding iproute-2.6.9-3.EL4.3.centos4.src.rpm
by Adam Monsen 31 Oct '06

31 Oct '06

I'm getting a strange error while rebuilding iproute-2.6.9-3.EL4.3.centos4.src.rpm ... rpmbuild --rebuild iproute-2.6.9-3.EL4.3.centos4.src.rpm ... ./normal >normal.dist *** glibc detected *** free(): invalid next size (normal): 0x08491050 *** /bin/sh: line 1: 5236 Aborted ./normal >normal.dist make[1]: *** [normal.dist] Error 134 ... + install -m 644 tc/normal.dist tc/pareto.dist tc/paretonormal.dist /data/tmp/cd654c/rpm/tmp/iproute-2.6.9-root/usr/lib/tc install: cannot stat `tc/pareto.dist': No such file or directory install: cannot stat `tc/paretonormal.dist': No such file or directory error: Bad exit status from /data/tmp/cd654c/rpm/tmp/rpm-tmp.36741 (%install) ... etc. Any ideas as to what might be causing this heap corruption? I'm using a pretty much stock CentOS 4.3 box to perform the rpm rebuild. Running the "normal" binary under gdb doesn't provide much additional info: ... *** glibc detected *** free(): invalid next size (normal): 0x08390050 *** Program received signal SIGABRT, Aborted. 0x00958bf1 in kill () from /lib/i686/libc.so.6 (gdb) bt #0 0x00958bf1 in kill () from /lib/i686/libc.so.6 #1 0x00958845 in raise () from /lib/i686/libc.so.6 #2 0x00959ea0 in abort () from /lib/i686/libc.so.6 #3 0x0098c52e in __libc_message () from /lib/i686/libc.so.6 #4 0x00992b7f in _int_free () from /lib/i686/libc.so.6 #5 0x00992f26 in free () from /lib/i686/libc.so.6 #6 0x080486a8 in main (argc=1, argv=0xbff52e44) at normal.c:54 (gdb) l 54 free(table); 55 return 0; 56 } -- Adam Monsen

1 0

Running two sshd's
by Gilles CHAUVIN 31 Oct '06

31 Oct '06

Hi all, I'm wondering whether it is feasible or not to run two distinct sshd daemons with different config options! I have a CentOS 4.4 gateway with 2 Ethernet interfaces. One is connected to the Internet and the other to the LAN. Basically, what I would like to do is having a sshd that listens to the LAN interface with password enabled auth. and a sshd bound to the Internet interface with forced key auth. (no password auth. allowed). I'm not sure that such a thing is possible using a single sshd_config file. What do you think would be the best way to do this? Is there someone here that already made a similar setup? Thanks for any help / ideas. Regards, Gilles.

5 5

mysql won't start
by David Mackintosh 31 Oct '06

31 Oct '06

OK so at some point I borked my mysql 4.1.20 installation on my x86_64 system. Possibly relevant: I have enabled the centosplus repository in yum.conf because I needed a package from there. I have not upgraded mysql from there. Everything was working, then "something" aparrently happened, and now mysql won't start. The logs say: 061031 11:37:38 mysqld started 061031 11:37:38 [ERROR] Can't start server : Bind on unix socket: Permission denied 061031 11:37:38 [ERROR] Do you already have another mysqld server running on socket: /var/lib/mysql/mysql.sock ? 061031 11:37:38 [ERROR] Aborting 061031 11:37:38 [Note] /usr/libexec/mysqld: Shutdown complete Now the naive would presume that there is a permissions problem on /var/lib/mysql/mysql.sock, right? Certainly the web suggests that this is the problem. [root@urquell2 ~]# ls -ld /var/lib/mysql/mysql.sock /var/lib/mysql ls: /var/lib/mysql/mysql.sock: No such file or directory drwxrwxr-x 4 mysql mysql 4096 Oct 31 11:39 /var/lib/mysql Or maybe I'm trying to run mysql as the wrong user? [root@urquell2 ~]# cat /etc/my.cnf [mysqld] datadir=/var/lib/mysql socket=/var/lib/mysql/mysql.sock # Default to using old password format for compatibility with mysql 3.x # clients (those using the mysqlclient10 compatibility package). old_passwords=1 [mysql.server] user=mysql basedir=/var/lib [mysqld_safe] err-log=/var/log/mysqld.log pid-file=/var/run/mysqld/mysqld.pid ...so clearly mysql is trying to tell me something but can't use the right words to describe the problem. In the highly unlikely event that someone knows what mysql is trying to say, can they tell me how I might fix this problem? But more likely I would like to reinstall the RPMs since something is broke, right? Well that isn't so simple either. [root@urquell2 ~]# rpm -e mysql error: "mysql" specifies multiple packages [root@urquell2 ~]# rpm -qa | grep mysql-4 mysql-4.1.20-1.RHEL4.1 mysql-4.1.20-1.RHEL4.1 [root@urquell2 ~]# rpm -e mysql-4.1.20-1.RHEL4.1 error: "mysql-4.1.20-1.RHEL4.1" specifies multiple packages We are not even getting to the dependancy hell this will involve. So how do I fix this problem? I'd rather not pave the system and start from scratch, but honestly if I'd done that the moment that this problem manifested, I'd probably be up and running again by now. -- /\oo/\ / /()\ \ David Mackintosh | Public Key: dave(a)xdroop.com | http://www.xdroop.com/dave/gpg.html $ gpg --recv-keys --keyserver subkeys.pgp.net 4C032504 Mystery attachment? http://wiki.xdroop.com/space/GPG

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RE: [CentOS] Centos and Network Attached Storage
by Mark Schoonover 31 Oct '06

31 Oct '06

Alexandru Asofie wrote: > Hello, > > I need to setup a NAS server on Centos. The machine will be: > Dual xeon/Dual Opteron > 4GB memory > 13x 320GB SATA + 1 hotspare > 1x 320GB SATA for OS > The server can do RAID5,6,or 10. > Has anyone installed such a software and can you recommand a specific > product? > > Thank you. I've built multi-terabyte systems around CentOS, and I'm in the process of writing up the "Poor Man's SAN" in my copious free time! ;) You don't mention what kind of RAID card you're using, but I stick with 3Ware. In a nutshell, all you need to do is a minimal install of CentOS from the first CD. Yum update everything. After this point, you can config Samba for your Windows clients, or NFS for other *nixes as needed. Could probably do AFS as well for Macs, but I haven't done that before. You'll have to wait until I get my howto done to configure hourly snapshots, etc.... HTH Mark

1 0

Microsoft Wireless Laser Mouse 6000 - WORKING
by Tom Lichti 31 Oct '06

31 Oct '06

I've found a few questions about trying to get this to work, I managed to do it, and thought I'd share: - get the evdev driver here: https://bugs.freedesktop.org/attachment.cgi?id=1745 - to install, run ./configure --prefix=/usr/X11R6, then make, make install. - edit your /etc/X11/xorg.conf like this: Section "InputDevice" Identifier "Mouse0" Driver "evdev" Option "Protocol" "evdev" Option "Dev Name" "Microsoft Microsoft Wireless Optical Mouse 1.00" Option "Dev Phys" "usb-*/input0" Option "Device" "/dev/input/event2" Option "Buttons" "9" Option "ZAxisMapping" "4 5" # wheel moves forward/back in the browser EndSection To figure out the "Dev Name", "Dev Phys" and "Device" settings cat /proc/bus/input/devices. I haven't gotten the tilt wheel to work yet, but everything else is good. You may want to swap buttons 2 and 3 as well using xmodmap. HTH Tom

1 0

RE: [CentOS] Linux World Expo - London 25th + 26th Oct 2006
by Robert Becker Cope 31 Oct '06

31 Oct '06

Dag Wieers <dag(a)wieers.com> wrote: > Is anyone else coming to help us out ? > Even for half or one day ? How did the Expo turn out? Would have been fun to have been able to help out. Maybe next year. robert

3 2

spam control
by Jerry Geis 31 Oct '06

31 Oct '06

Gents, I have added the following to /etc/mail/sendmail.mc and rebuilt it trying to control spam. I still get about 25 spam messages a day. Is there something else that can help control spam? Thanks jerry --------------------------- dnl # dnl # dnsbl - DNS based Blackhole List/Black List/Rejection list dnl # See http://www.sendmail.org/m4/features.html#dnsbl dnl # FEATURE(`dnsbl', `bl.spamcop.net', `"Spam blocked see: http://spamcop.net/bl.shtml?"$&{client_addr}')dnl FEATURE(`dnsbl', `relays.ordb.org', `"Spam blocked see: http://ordb.org/lookup/?host="$&{client_addr}')dnl FEATURE(`dnsbl', `cbl.abuseat.org', `"Spam blocked see: http://cbl.abuseat.org/lookup.cgi?ip="$&{client_addr}')dnl FEATURE(`dnsbl', `sbl.spamhaus.org', `"Spam blocked see: http://spamhaus.org/query/bl?ip="$&{client_addr}')dnl FEATURE(`dnsbl', `list.dsbl.org', `"Spam blocked see: http://dsbl.org/listing?"$&{client_addr}')dnl dnl #

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Discuss October 2006