Discuss

discuss@lists.centos.org

34753 discussions

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 24 Jul '08

24 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

8 11

Ideas for stopping ssh brute force attacks
by Bo Lynch 23 Jul '08

23 Jul '08

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. -- Bo Lynch

22 26

NFS V4?
by David Dyer-Bennet 23 Jul '08

23 Jul '08

Looks like just starting the nfs service turns on V2, 3, and 4 (based on reading the script, reading the man pages, and looking at the ports using netstat -l). However, I can connect using -t nfs in the mount, and -t nfs4 fails. I don't believe this is a firewall issue, internal IPs are fully open to each other according to an early rule in iptables. $ sudo mount host03:/home/ddb /mnt/ddb -t nfs4 -o rw,hard,intr mount: permission denied but $ sudo mount host03:/home/ddb /mnt/ddb -t nfs -o rw,hard,intr $ I'm not sure I especially care about NFS V4 (this is to share the programmers' home directories, so it's easy to work on any of the production systems; it won't be particularly high-load or any particularly strange usage pattern), but I care about understanding things at least. Both systems are running Centos 4.6. Any ideas? -- David Dyer-Bennet, dd-b(a)dd-b.net; http://dd-b.net/ Snapshots: http://dd-b.net/dd-b/SnapshotAlbum/data/ Photos: http://dd-b.net/photography/gallery/ Dragaera: http://dragaera.info

4 7

How to get additional packages? How secure is Yum?
by Manuel Reimer 23 Jul '08

23 Jul '08

Hello, I'm coming from Slackware and I'm searching for another distribution to run on my desktop and in near future also on a server. The *top priority* for me is security! I've test-installed CentOS on one of my test systems. So far anything went OK. After trying a bit, I would like to ask some questions: - What is the suggested way to get *secure and trusted* additional packages? I don't want packages packaged by "someone" who doesn't have the required experience and who doesn't do the packaging on a dedicated "build host" which isn't used for anything else than building packages. I tried the Dag-Repository. Seems to be well done and as Dag is member of the CentOS-Staff, I think his packages are trustworthy. Unfortunately I'm unsure if they are secure. For example there is a Drupal package which is *out of date*! So there should either be an update or the package maybe should be removed at all as it is a security hole! Is there a repository available which only has that much packages as the maintainer is able to keep secure? - My second question is about: http://www.cs.arizona.edu/people/justin/packagemanagersecurity/attacks-on-p… Yum also seems to affected, so a malicious mirror would be able to downgrade a package on a server where it's suggested to be *upgraded* to a patched version. When will Yum be fixed and what is the suggested way to get Yum more secure? Thanks in advance for any answers. Yours Manuel -- () ascii ribbon campaign - against html mail /\ - gegen HTML-Mail answers as html mail will be deleted automatically! Antworten als HTML-Mail werden automatisch gelöscht! GMX Kostenlose Spiele: Einfach online spielen und Spaß haben mit Pastry Passion! http://games.entertainment.gmx.net/de/entertainment/games/free/puzzle/61691…

5 6

e-SATA card well supported by Linux (CentOS) with built-in drivers and that supports hot plug
by Filipe Brandenburger 23 Jul '08

23 Jul '08

Hi, I'm looking for a good e-SATA card, preferrently one that is supported by Linux with built-in drivers (no need to compile the modules from the vendor), or at least that the vendor's drivers are packaged with dkms or something similar that makes it easy on kernel upgrades. It's essential that the card supports hot-plugging, because we want to use it to plug backup drives and have them rotated. We are testing one e-SATA drive from LaCie. We tested the Adaptec eSATA II RAID 1225SA, but just to get the module to compile right it was a huge PITA, and we still haven't gotten it to recognize our LaCie drive (we're still not sure why). Instead of spending more time making that s*#t work, I would rather buy another one, but then I would try to get one that works out-of-the box. I don't need that the card supports RAID, it really does not matter to me. Any advice will be much appreciated. Thanks, Filipe

1 0

[Fwd: Re: [CentOS] fail2ban needs shorewall?]
by andylockran 23 Jul '08

23 Jul '08

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I've used denyhosts. If you do have an issue with fail2ban, it does pretty much the same thing. Andy - -------- Original Message -------- Subject: Re: [CentOS] fail2ban needs shorewall? Date: Wed, 23 Jul 2008 17:08:07 +0200 From: Kai Schaetzl <maillists(a)conactive.com> Reply-To: CentOS mailing list <centos(a)centos.org> To: centos(a)centos.org References: <VA.000032df.013be7a4(a)news.conactive.com> <200807231353.49975.tony.molloy(a)ul.ie> <VA.000032e0.0165b628(a)news.conactive.com> <200807231453.05336.tony.molloy(a)ul.ie> Tony Molloy wrote on Wed, 23 Jul 2008 14:53:05 +0100: > you can specify noarch on the install > line. that's what I did, I was just curious. Kai - -- Kai Schätzl, Berlin, Germany Get your web at Conactive Internet Services: http://www.conactive.com _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iEYEARECAAYFAkiHX8EACgkQauMjEM4rxIS+OACgkb8cbA7lppmZh0COd4dFS2/W sz8AnRnVnxTpCMCUMOUwyOPF8eKk+bDP =nU4V -----END PGP SIGNATURE-----

2 1

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

Discuss