Discuss March 2008

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Centos v3.3 CD 2
by Luis-Miguel Astudillo 15 Nov '11

15 Nov '11

Sorry, I have been away for a while. has anyone fixed CD2 fotr CentOS v3.3 ? -- Luis

6 7

Lingering dhclient issue
by Alfred von Campe 22 Jun '11

22 Jun '11

I recently reconfigured some CentOS 4.3 systems that were using DHCP to use static IP addresses. At the same time, the systems were moved to a new VLAN. Here is the approximate sequence of events that took place: 1. ifdown eth0 2. edit /etc/sysconfig/network-scripts/ifcfg-eth0 with static IP address 3. wait for network folks to reconfigure switch 4. ifup eth0 I may have reversed steps 1 and 2 on some of the systems. The problem was that the dhclient process didn't go away, and kept renewing the old lease. Our DHCP server is configured to contact the DNS server and update the entry for each host it serves. So the DNS entries for these systems were pointing to the old address in the old VLAN. The eth0 interface itself just kept the static IP address for which it was configured. It took me a while to figure out what was going on. My question is, what could I have done to avoid this (other than killing the dhclient process)? Is there a better way to reconfigure an interface to use a static address? I am not interested in solutions that involve using a GUI (i.e., only command line solutions). Thanks, Alfred

9 17

what pkg contains libstdc++-libc6.2-2.so.3
by Fong Vang 02 Feb '11

02 Feb '11

In CentOS 4.1/2, what package contains this library: libstdc++-libc6.2-2.so.3? I installed a couple of the compat- packages, but this library is still missing.

8 8

mod_mono on centos5?
by Dave 07 Sep '09

07 Sep '09

Hello, Does anyone have mod_mono rpm or srpm compiled for centos5? Thanks. Dave.

4 4

Reformatting a USB drive
by Todd Cary 29 Sep '08

29 Sep '08

I have a USB drive that has been formatted as NTFS. Can I reformat it? I have identified these properties about it /dev/sda1 /media/Extrnl_Bkup Not sure what to do next since the GUI will not mount a NTFS disk (expected). Todd -- Ariste Software 2200 D Street Ext Petaluma, CA 94952 (707) 773-4523

9 15

Reg. VNC server and Windows and Centos interworking
by Padmaja 13 Jul '08

13 Jul '08

Hi all, I have a Windows XP PC and a Centos PC (Centos 4.3 release, kernel- 2.6.9-34.EL) which are in the same LAN. Currently, I am able to use VNC server on the centos to view the Windows PC, but not able to view the Centos PC from the Windows PC. This applies for even file sharing also. The samba server is running and I can view the windows network from Centos PC but in the Windows network, not able to view the Centos PC. Also not able to print from Centos to the LAN printer. Any help is greatly appreciated. Thank You, Padmaja

7 10

NFS options on kernel parameters
by vincenzo romero 13 Jul '08

13 Jul '08

Hello, I am running an NFS server/PXE on a Cent OS 5.1 server. I have defined an NFS export with "no_root_squash" option in my /etc/exports file: # # NFS Export Files # /export/images *(rw,sync,no_root_squash) ... A client PXE boots as a diskless station to the above server into a root-NFS directory underneath the above /export/images export. When the client boots; the NFS export is NOT root-Squashing - whenever I touch a file, it is created as user nobody and NOT root. I would like to NFS root-squash the root directory. I believe that I am missing to pass a parameter in my kernel - (defined in .. /pxelinux.cfg/default) .. currently my kernel parameters are: APPEND root=/dev/nfs rw nfsroot=192.1.2.5:/export/images/root-fs ip=dhcp ... would anyone be kind to provide advise on how I can mount my client so that I am ensure that the "no_root_squash" setting is enabled? thanks in advace. -- best, Vince

3 3

ext3 errors
by Les Mikesell 17 May '08

17 May '08

I recently set up a new system to run backuppc on centOS 5 with the archive stored on a raid1 of 750 gig SATA drives created with 3 members with one specified as "missing". Once a week I add the 3rd partition, let it sync, then remove it. I've had a similar system working for a long time using a firewire drive as the 3rd member, so I don't think the raid setup is the cause of the problem. I may have had problems with the drive power connectors initially but I think that is fixed now and I can't see any hardware errors being logged (the system/log files are on different drives). About once a week, I get an error like this, and the partition switches to read-only. --- Feb 24 04:48:20 linbackup1 kernel: EXT3-fs error (device md3): htree_dirblock_to_tree: bad entry in directory #869973: directory entry across bloc ks - offset=0, inode=3915132787, rec_len=42464, name_len=11 Feb 24 04:48:20 linbackup1 kernel: Aborting journal on device md3. Feb 24 04:48:20 linbackup1 kernel: ext3_abort called. Feb 24 04:48:20 linbackup1 kernel: EXT3-fs error (device md3): ext3_journal_start_sb: Detected aborted journal Feb 24 04:48:20 linbackup1 kernel: Remounting filesystem read-only Feb 24 04:48:33 linbackup1 kernel: EXT3-fs error (device md3): htree_dirblock_to_tree: bad entry in directory #4212181: rec_len % 4 != 0 - offse t=0, inode=4054525677, rec_len=1183, name_len=121 ---- 'fsck -y' seems to fix it up, but it keeps happening. Is this likely to be leftover cruft from the hardware issues or are there problems in ext3/raid1/sata drivers? The way backuppc stores data with millions of hardlinks in the archive it isn't really practical to copy it off, reformat, and start over. -- Les Mikesell lesmikesell(a)gmail.com

4 10

CentOS5.1 PHP 5.2 RPMs?
by James Fidell 06 May '08

06 May '08

Is there a PHP 5.2 build for CentOS5.1 anywhere? Unfortunately I need a fix for a SOAP bug that is present in the current 5.1.6 release. James

4 10

Securing SSH
by Tim Alberts 20 Apr '08

20 Apr '08

So I setup ssh on a server so I could do some work from home and I think the second I opened it every sorry monkey from around the world has been trying every account name imaginable to get into the system. What's a good way to deal with this?

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Discuss March 2008