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strange network problem
by Michael Schumacher 09 Mar '10

09 Mar '10

Hi, I am trying to fix a problem I have for about a week now. The environment is: --several independent servers with Centos5.4 on the latest patchlevel (example will be server2) All of them are working properly. --a machine with Xen installed to host some virtual machines (xenserver1) --domu servers on xenserver1 (crmserver1, winserver1) The whole network is connected with a Lancom router to a DSL line. Some days ago I noticed that server2 was updated properly, but xenserver1, crmserver1 and winserver were not updating the OS properly. They seemed to be cut off the internet. I can ping from all to all servers internally, I can ssh from all to all servers internally and I can browse the Internet from server2 successfully (using IP-numbers and hostnames), but xenserver1 and its domu clients could not connect to the internet. I checked the firewalls on xenserver, and crmserver1. They seemed to be OK and stopping them with "etc/init.d/iptables stop" didn't solve the problem. I can resolve hostnames: >[root@xenserver1 ~]# nslookup www.centos.org >Server: 192.168.1.1 >Address: 192.168.1.1#53 > >Non-authoritative answer: >Name: www.centos.org >Address: 72.232.194.162 but I cannot browse neither to "elinks http://www.centos.org" nor to 72.232.194.162, however, I can ping www.centos.org successfully. the network routes seem to be OK : >[root@xenserver1 ~]# route >Kernel IP routing table >Destination Gateway Genmask Flags Metric Ref Use Iface >10.1.1.0 * 255.255.255.0 U 0 0 0 eth1 >192.168.122.0 * 255.255.255.0 U 0 0 0 virbr0 >169.254.0.0 * 255.255.0.0 U 0 0 0 eth0 >192.168.0.0 * 255.255.0.0 U 0 0 0 eth0 >default LANCOM_1751_1.p 0.0.0.0 UG 0 0 0 eth0 (eth1 is a drbd interface) > [root@crmserver1 ~]# route > Kernel IP routing table > Destination Gateway Genmask Flags Metric Ref Use Iface > 169.254.0.0 * 255.255.0.0 U 0 0 0 eth0 > 192.168.0.0 * 255.255.0.0 U 0 0 0 eth0 > default LANCOM_1751_1.p 0.0.0.0 UG 0 0 0 eth0 Has anybody any clue where to look? best regards --- Michael Schumacher PAMAS Partikelmess- und Analysesysteme GmbH Dieselstr.10, D-71277 Rutesheim Tel +49-7152-99630 Fax +49-7152-996333 Geschäftsführer: Gerhard Schreck Handelsregister B Stuttgart HRB 252024

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looking for lshw xml parser
by Alan McKay 09 Mar '10

09 Mar '10

Hey folks, Google brings up one concrete hit at http://chadsikorra.com/?p=96 but I contacted the author and he said it is buggy and needs a fair bit of work, so I decided against using it. That's about all I was able to come up with. Anything else out there? thanks, -Alan -- “Don't eat anything you've ever seen advertised on TV” - Michael Pollan, author of "In Defense of Food"

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Re: [CentOS] Recover RAID
by Jeff Sadino 09 Mar '10

09 Mar '10

I have access to all of the HEX data on each drive, and I now which sector each stripe starts at. Is there any way that I can reconstruct my data from that? When a file gets split up in RAID0, does the controller use the same sectors on each stripe to write the file parts? Thanks, Jeff On Wed, Mar 3, 2010 at 9:39 PM, Sorin Srbu <sorin.srbu(a)orgfarm.uu.se> wrote: > >-----Original Message----- > >From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On > Behalf > >Of Timo Schoeler > >Sent: Thursday, March 04, 2010 8:15 AM > >To: CentOS mailing list > >Subject: Re: [CentOS] Recover RAID > > > >>> Backups? I wish :) I will now. > >>[...] > >> Eh? Raid0 with no backups? For real? > > > >Backups are for sissies; running a hara-kiri RAID demands *not* having > >backups. Or did the kamikaze pilots have parachutes? > > 8-) > > Or as Linus Torvalds is said to have said; "Real men don't use backups, > they > post their stuff on a public ftp server and let the rest of the world make > copies." > > ;-) > -- > /Sorin > > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > http://lists.centos.org/mailman/listinfo/centos > >

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/etc/group file entries
by Bill Campbell 08 Mar '10

08 Mar '10

Looking at the documentation of the /etc/group file including some google searches, it appears to me that, contrary to the man pages for group, Linux systems generally do not put membership user names for the user's primary group in the record for it in the /etc/group file, only for secondary groups. FreeBSD seems to do the same thing while SCO OpenServer has full entries for the primary group as well as secondaries. Is there a best practice when manipulating these regarding line length? I've see articles that recommend splitting long entries into multiple group lines with the same group id, while at least some SuSE Linux Enterprise systems produce single long lines (30,869 characters on a site with about 5,100 accounts). How would the system's group maintenance routines interact with a group file where this was done? Bill -- INTERNET: bill(a)celestial.com Bill Campbell; Celestial Software LLC URL: http://www.celestial.com/ PO Box 820; 6641 E. Mercer Way Voice: (206) 236-1676 Mercer Island, WA 98040-0820 Fax: (206) 232-9186 Skype: jwccsllc (206) 855-5792 The man who produces while others dispose of his product is a slave. Ayn Rand

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Re: [CentOS] Backuppc-updates on CentOS
by Scott Silva 08 Mar '10

08 Mar '10

on 2-25-2010 1:44 AM Sorin Srbu spake the following: > Hi all, > > I installed BackupPC on one of my Centos 5.4-machines following the wiki at > http://wiki.centos.org/HowTos/BackupPC#head-725ed151d366bcf182cea92f765c373…, > where BackupPC is installed from the c5-testing repo. > > root@mach012 ~/ [0]# rpm -qa backuppc > backuppc-3.1.0-1.el5.centos > root@mach012 ~/ [0]# > > Seeing how there's been some updates to BackupPC in the near past, I thought > I'd run a yum update to get the updated package. That didn't work. So I > searched pbone.net for a BackupPC package on CentOS5 but didn't find any. > Doing the same search for RHEL5 gave me two packages (one for i386 and one for > x86_64); v3.1.0-5. > Looking more closely I saw that the RHEL5-packages were from epel, a repo one > maybe shouldn't choose as a primary repo for ones CentOS-systems if you can > help it. At least that's the impression I got from the various posts to this > list. > > I thought all packages available from the prominent American upstream provider > got a treatment from the CentOS crew? Am I wrong or am I missing something > really basic, or some part of the CentOS philosophy here? Or isn't BackupPC a > package worthy of being CentOSified? 8-) > 3.1.0 is the latest stable version... The newer version has been marked beta for a few years now

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Re: [CentOS] Centos 5.4 DNS resolution issue
by Gaurav Nangla 08 Mar '10

08 Mar '10

I can ping the google.com ip addresses (209.85.231.104) but can't ping the FQDN, obviously DNS is broken. I can also ping the nameserver ip addresses specified in /etc/resolv.conf. -- Gaurav On Sun, Mar 7, 2010 at 10:48 PM, Gaurav Nangla <gaurav.knangla(a)gmail.com>wrote: > Hi Everyone, > I've setup a Centos 5.4 (x86_64) box in a VM recently; the trouble is I just > can't get internet to work on it. > > Pinging the resolved google.com ips, nameserver ips works fine but DNS > lookup queries don't. > > Here's some of the digging around that I did: > > dig google.com > ; <<>> DiG 9.3.6-P1-RedHat-9.3.6-4.P1.el5 <<>> google.com > ;; global options: printcmd > ;; connection timed out; no servers could be reached > > nslookup google.com > ;; connection timed out; no servers could be reached > > I didn't observe any UDP/TCP packets during dig and nslookup either > > cat /etc/resolv.conf > ; generated by /sbin/dhclient-script > > nameserver 208.67.220.220 > > nameserver 208.67.222.222 > > Also my /etc/nsswitch.conf is in order and contains the "hosts: files dns" > entry. > > What could be wrong? > > -- > Best Regards, > Gaurav >

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creating partitions on a 2.7TB drive
by Khusro Jaleel 08 Mar '10

08 Mar '10

Hello, sorry for the long email, it's a little hard to explain this issue. The gist of it is that the Ubuntu version of parted allowed me to do something which perhaps should not be allowed i.e. creating partitions on a 2.7TB drive when the partition table is not *gpt* but *msdos*. I am trying to configure 2 identical servers, both are Dell Poweredge 2970 machines with 6 disks in them configured as a RAID 5 with one hotspare, and both give me 2.726TB of space after the RAID 5 is configured. There are slight differences between the BIOS versions and Firmware versions of the LSI disk controller, etc but I'm not sure that matters in this case. Now, I setup server "A" a few months ago and for some reason that I don't remember now I resorted to using a Ubuntu 64-bit LiveCD to create the partitions. Since the disk is larger than 2TB, I had to use 'parted' to create the partitions. So I happily created the partitions I wanted which are below: / 50 GB /var 20 GB /data the remainder (a large partition) Now, after a few months I forgot all about the Ubuntu LiveCD and tried to setup server "B" using the CentOS 5.3 x86_64 CD. However the installer immediately complained that "this disk in using a GPT partition table and this computer cannot boot using GPT" and it keeps saying this no matter what I do. I've tried creating a separate /boot partition, using LVMs for everything, etc but nothing works, even "dd" did not give me much luck, although perhaps I should try deleting the "end" of the disk rather than the beginning? I have now noticed that when press Ctrl-Alt-F2 on server "B" during the CentOS install and attempt to use 'parted' it says that the "label" type is "gpt". It allows me to create new partitions, etc but it's no help because the installer keeps complaining that the machine will not boot with a GPT partition table. So I need to really use a "msdos" partition type to boot this machine successfully, but the CentOS version of parted will not allow me to do that. The additional mystery is that if I check server "A" which I partitioned a few months ago using Ubuntu, the "label" type is "msdos"!! How is that possible? In addition if I use the CentOS CD and try to use parted on server "A" now, it gives the following error: --------------------------- # parted GNU Parted 1.8.1 Using /dev/sda Welcome to GNU Parted! Type 'help' to view a list of commands. (parted) p Error: msdos labels do not support devices that have more than 4294967295 sectors. --------------------------- BUT if I reboot this same server (server A) again using the Ubuntu LiveCD parted works just fine! It prints the label type as "msdos", and it prints the above partition table correctly and gives me the right size for it and everything. So what is going on here? Is the Ubuntu parted somehow buggy and allowing me to do something dangerous that I will regret later, or can I just ignore the label setting in parted and continue to setup Server "B" the same as "A" and hope for the best? I would appreciate any insights.

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how to download the source of kdebase
by cjzjm100 08 Mar '10

08 Mar '10

Hi,man! I want to see the source code of konqueror and some of softwares in CentOS，so i tried to down the SRPM,but i found that all in kdebase were patch files. Where can i download the full source code. By the way i had tried this:yumdownloader --source kdebase,but it could not find kdebase.

1 0

Multi-wan setup, trying to build a script that ease setup, need help :)
by Gabriel - IP Guys 08 Mar '10

08 Mar '10

Working on a multiwan script based on the page http://lartc.org/howto/lartc.rpdb.multiple-links.html You can find the script at http://pastie.org/859350 I'm trying to make sure that the logic is correct, and that it'll work I think it would, and ideas to make it a better script, feel free to throw them my way. Look forward to hearing from you.

1 0

Tripwire on Centos
by Bob Aiello 08 Mar '10

08 Mar '10

does anyone know which versions of tripwire work on Centos? I am using 2.6.18-028stab059.6 Thanks in advance! Bob http://www.linkedin.com/in/BobAiello

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