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Possible bug in ifup-eth script of Centos 5.2 (combination of bond and bridge)
by Marco Fretz 24 Jul '08

24 Jul '08

Dear CentOS, I think i found a "bug" in the /etc/sysconfig/network-scripts/ifup-eth script of CentOS 5.2. i can post the my changed ifup-eth script if you want. Am I the first one with this problem? Situation: - eth2 and eth3 should be in bond1 interface - bond1 should be an interface of bridge named "iscsi" the problem is that the brctl addif command in ifup-eth gets executed before the slave interfaces of a bonding are enslaved. brctl addif fails if you are trying to add a bonding interface to a bridge and the bonding interface have no slaves. my solution was to switch the order in the ifup-eth script: - to the bonding (slave interfaces) stuff before the bridge stuff and its working... the bonding interface gets his slaves and can be added to the bridge without any errors. best regards Marco

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Bind Firewall Rules
by John Hinton 24 Jul '08

24 Jul '08

OK, so does anybody have a good firewall rule solution for what we're supposed to be doing with bind these days? Obviously port 53 is no longer enough. TIA John Hinton

11 17

OT: Content system preferences, KnowledgeTree vs Alfresco
by Jim Perrin 24 Jul '08

24 Jul '08

We're in the market for a new content system at work. Right now it's between KnowledgeTree and alfresco. Mostly we're looking for something with the ability to upload, tag with various meta-data, and share among various other systems via webdav, cifs, etc. Does anyone have any personal preferences or experiences with these two products? -- During times of universal deceit, telling the truth becomes a revolutionary act. George Orwell

2 1

BackupPC won't fork after CentOS 5.2 upgrade
by Ben 24 Jul '08

24 Jul '08

For some time now i have been running BackupPC 3.1.0 on CentOS 5.1 x86_64 however after upgrading to CentOS 5.2 BackupPC will not start. "sudo /etc/init.d/backuppc start" return OK but there is no BackupPC processes. This fails also. # sudo -u backuppc /usr/bin/BackupPC -d # echo $? 0 This succeeds, but of course does not fork. # sudo -u backuppc /usr/bin/BackupPC So for some reason after the CentOS 5.2 upgrade it will not fork into the background. I have run the perl debugger over it and up until the fork everything is fine. Nothing appears in the LOG. Any ideas would be appreciated. Ben PS. Here is a list of installed perl packages. # rpm -qa | grep perl perl-String-CRC32-1.4-2.fc6 perl-Crypt-DES-2.05-4.el5 perl-Compress-Zlib-1.42-1.fc6 perl-DateTime-Format-Mail-0.30-4.el5 perl-libwww-perl-5.805-1.1.1 perl-MIME-Lite-3.01-5.el5 nagios-plugins-perl-1.4.11-2.el5 perl-Config-IniFiles-2.39-6.el5 perl-Digest-SHA1-2.11-1.2.1 perl-Digest-HMAC-1.01-15 perl-File-RsyncP-0.68-1.c5 mod_perl-2.0.2-6.3.el5 perl-Params-Validate-0.88-3.el5 perl-URI-1.35-3 perl-Archive-Zip-1.16-1.2.1 perl-DateTime-0.41-1.el5 perl-DateTime-Format-W3CDTF-0.04-1.el5 perl-HTML-Parser-3.55-1.fc6 perl-XML-Parser-2.34-6.1.2.2.1 perl-Time-modules-2003.1126-4.el5.1 perl-MailTools-1.77-1.el5 perl-5.8.8-10.el5_2.3 perl-Net-SNMP-5.2.0-1.el5.1 perl-BSD-Resource-1.28-1.fc6.1 perl-Class-Singleton-1.03-3.el5 perl-HTML-Tagset-3.10-2.1.1 perl-XML-RSS-1.31-1.el5 perl-Geo-IP-1.28-3.el5 perl-TimeDate-1.16-5.el5

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Linux is Not Boot-Up
by Balaji 24 Jul '08

24 Jul '08

Dear All, Currently i am using CentOS 4.4 Linux After i am rebooted the PC and I have getting problem like /etc/rc.d/rc.sysinit: line 126: 442 Segmentation fault /bin/dmesg -n $LOGLEVEL Initialization hardware... /etc/rc.d/rc.sysinit: line 167: 450 Segmentation fault LC_ALL=C fgrep -xq "$1" /etc/hotplug/blacklist >/dev/null /etc/rc.d/rc.sysinit: line 167: 455 Segmentation fault LC_ALL=C fgrep -xq "$1" /etc/hotplug/blacklist 2>/dev/null ................. Out of Memory: Killed process 722(sh). Out of Memory: Killed process 1133(sh). Out of Memory: Killed process 1151(sh). .................. 07/21 17:32:20 checklock: stat failed, no file 07/21 17:32:20 locking the line 07/21 17:32:20 makelock(ttys1) called 07/21 17:32:20 checklock: stat failed, no file 07/21 17:32:20 cannot open /proc/0/cmdline: No such file or directory .................. After i have rebooted the PC once again and I have getting same problem continuously. After booted up the server, login showing as "(none) login:". The following error are display on screen while execute the commands:- -bash-3.00$ ifconfig Warning: cannot open /proc/net/dev (No such file or directory). Limited output. -bash-3.00$ ls ls:error while loading shared libraries: Ej: cannot open shared object file: No such file or directory. -bash-3.00$ ll -bash: ll: command not found We are not sure why this is happening. Can some one throw light on this. Regards -S.Balaji

2 1

Help recovering from an LVM issue
by Clint Dilks 24 Jul '08

24 Jul '08

Hi People I just updated a CentOS 5.2 Server that is a Guest inside VMware ESX 3.50 Server using "yum update". As far as I can tell the only three packages were updated Jul 24 16:37:49 Updated: php-common - 5.1.6-20.el5_2.1.i386 Jul 24 16:37:50 Updated: php-cli - 5.1.6-20.el5_2.1.i386 Jul 24 16:37:50 Updated: php - 5.1.6-20.el5_2.1.i386 But when I rebooted the Server one of my Volume Groups VolGroup01 would not mount. By removing all references to VolGroup1 in /etc/fstab I was able to get a system that boots. Unfortunately I am not that familiar with LVM but using the following commands it looks like all the information about my logical volumes on VolGroup01 is gone is this correct? Is there likely to be any chance of recovering from this ? vgscan Reading all physical volumes. This may take a while... Found volume group "VolGroup01" using metadata type lvm2 Found volume group "VolGroup00" using metadata type lvm2 pvs --units=h PV VG Fmt Attr PSize PFree /dev/sda2 VolGroup00 lvm2 a- 9.88G 0 /dev/sda3 VolGroup00 lvm2 a- 90.00G 0 /dev/sdb1 VolGroup01 lvm2 a- 19.97G 19.97G lvdisplay --- Logical volume --- LV Name /dev/VolGroup00/LogVol00 VG Name VolGroup00 LV UUID cEWsVM-8M8w-0gWY-FFoh-bGLT-sf0M-sbosUD LV Write Access read/write LV Status available # open 1 LV Size 98.00 GB Current LE 3136 Segments 2 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:0 --- Logical volume --- LV Name /dev/VolGroup00/LogVol01 VG Name VolGroup00 LV UUID B8Y0UO-LATT-ohl2-kvfZ-bO1W-4cP8-3a6pVz LV Write Access read/write LV Status available # open 1 LV Size 1.88 GB Current LE 60 Segments 1 Allocation inherit Read ahead sectors auto - currently set to 256 Block device 253:1 Thank you for any advice you may have relating to this.

1 1

CentOS 4.4 Linux Booting problem
by Balaji 24 Jul '08

24 Jul '08

Dear All, I'm running linux CentOS 4.4. Everything was working fine, then one day I tried to log in, and my computer "hung" Upon reboot I got this error message after the GRUB Bootloader screen: /etc/rc.d/rc.sysinit: line 126: 442 Segmentation fault /bin/dmesg -n $LOGLEVEL Initialization hardware... /etc/rc.d/rc.sysinit: line 167: 450 Segmentation fault LC_ALL=C fgrep -xq "$1" /etc/hotplug/blacklist >/dev/null /etc/rc.d/rc.sysinit: line 167: 455 Segmentation fault LC_ALL=C fgrep -xq "$1" /etc/hotplug/blacklist 2>/dev/null ................. Out of Memory: Killed process 722(sh). Out of Memory: Killed process 1133(sh). Out of Memory: Killed process 1151(sh). .................. 07/21 17:32:20 checklock: stat failed, no file 07/21 17:32:20 locking the line 07/21 17:32:20 makelock(ttys1) called 07/21 17:32:20 checklock: stat failed, no file 07/21 17:32:20 cannot open /proc/0/cmdline: No such file or directory .................. After i have rebooted the PC once again and I have getting same problem continuously. After booted up the server, login showing as "(none) login:". The following error are display on screen while execute the commands:- -bash-3.00$ ifconfig Warning: cannot open /proc/net/dev (No such file or directory). Limited output. -bash-3.00$ ls ls:error while loading shared libraries: Ej: cannot open shared object file: No such file or directory. -bash-3.00$ ll -bash: ll: command not found We are not sure why this is happening. Can some one throw light on this. Regards -S.Balaji

2 1

Adaptec RAID 3805 / 5805
by Florin Andrei 23 Jul '08

23 Jul '08

Anybody using these? Pros? Cons? Drivers for CentOS 5? Config / management utility? -- Florin Andrei http://florin.myip.org/

1 0

3ware 9650SE drivers for CentOS 5.0-EL kernel 2.6.18-8
by Gert Vandenreyt 23 Jul '08

23 Jul '08

Hi, I'm trying to install K12LTSP based on CentOS 5.0-el 32bits kernel 2.6.18-8 on a server with 3ware 9650SE raid controller. Does anybody know where I can find a driver diskette for the raid controller as this is only supported from kernel 2.6.19. Thanks for any help Gert

4 3

RE: [CentOS] Ideas for stopping ssh brute force attacks
by Bowie Bailey 23 Jul '08

23 Jul '08

Bo Lynch wrote: > just wanted to get some feedback from the community. Over the last few > days I have noticed my web server and email box have attempted to > ssh'd to using weird names like admin,appuser,nobody,etc.... None of > these are valid users. I know that I can block sshd all together with > iptables but that will not work for us. I did a little research on > google and found programs like sshguard and sshdfilter. Just wanted > to know if anyone had any experience with anything like these > programs or have any other advice. I really appreciate it. The simplest thing is to change the port. I know it's "security through obscurity", but it works well and can be used along with whatever other security enhancements you care to use. -- Bowie

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