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/mnt/sysimage/dev folder in rescue mode
by Mogens Kjaer 25 Mar '10

25 Mar '10

If I boot C5 from DVD in rescue mode, chroot to /mnt/sysimage, and try to do a grub-install /dev/sda it will fail because the /dev folder is empty (in the chroot environment). Until now I've then created the missing nodes manually, but is there a smarter way of doing this? Some devfs that needs to be mounted on top of /dev? Mogens -- Mogens Kjaer, Carlsberg A/S, Computer Department Gamle Carlsberg Vej 10, DK-2500 Valby, Denmark Phone: +45 33 27 53 25, Mobile: +45 22 12 53 25 Email: mk(a)crc.dk Homepage: http://www.crc.dk

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mkisofs help?
by Slack-Moehrle 24 Mar '10

24 Mar '10

Hi All, I am following: http://www.linuxinsight.com/how-to-flash-motherboard-bios-from-linux-no-dos… to make a bootable CD to flash my bios I get to mkisofs step, but what I get is not what I think I want. I dont understand if I unmount /tmp/floppy how the Mkisofs command of: mkisofs -o bootcd.iso -b FDOEM.144 FDOEM.144 how I get everything in /tmp/floppy Here is what I did: wget http://www.fdos.org/bootdisks/autogen/FDOEM.144.gz gunzip FDOEM.144.gz mkdir /tmp/floppy mount -t vfat -o loop FDOEM.144 /tmp/floppy Copied the flash files to /tmp/floppy umount /tmp/floppy mkisofs -o bootcd.iso -b FDOEM.144 FDOEM.144 Can anyone help? -Jason

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Rebuild - Again!?
by gene.poole＠macys.com 24 Mar '10

24 Mar '10

I putzd around and messed up my primary system. I could get it back with a bunch of work a-rounds but I've decided to do a complete rebuild of it. What I need to run on this machine (besides the CentOS 5.2 OS) is Oracle 11g (requires gnome), VMware Server 2, JBoss 5, plus some other tidbits. Does anyone have or know of a checklist that I can use to make sure I've done everything correctly (as least as far as the OS install and configuration is concerned)? Thanks, Gene Poole

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mounting gfs partition hangs
by sandra-llistes 24 Mar '10

24 Mar '10

Hi, I have configured two machines for testing gfs filesystems. They are attached to a iscsi device and centos versions are: CentOS release 5.4 (Final) Linux node1.fib.upc.es 2.6.18-164.el5 #1 SMP Thu Sep 3 03:33:56 EDT 2009 i686 i686 i386 GNU/Linux The problem is if I try to mount a gfs partition it hangs. [root@node2 ~]# cman_tool status Version: 6.2.0 Config Version: 29 Cluster Name: gfs-test Cluster Id: 25790 Cluster Member: Yes Cluster Generation: 4156 Membership state: Cluster-Member Nodes: 2 Expected votes: 2 Quorum device votes: 2 Total votes: 4 Quorum: 3 Active subsystems: 9 Flags: Ports Bound: 0 Node name: node2.fib.upc.es Node ID: 2 Multicast addresses: 239.192.100.35 Node addresses: 147.83.41.130 [root@node2 ~]# cman_tool nodes Node Sts Inc Joined Name 0 M 0 2010-03-24 14:46:22 /dev/web/web 1 M 4156 2010-03-24 17:08:36 node1.fib.upc.es 2 M 4132 2010-03-24 14:46:09 node2.fib.upc.es [root@node2 ~]# group_tool hangs... [root@node1 ~]# mount -t gfs /dev/home2/home2 /home2 hangs... If I cancel the command I can return to the terminal and I don't see anything in log files. The resource /dev/home2/home2 is accessible by the two nodes and if I try to mount /home2 with lock_nolock there is no problem. cluster.conf is: <?xml version="1.0"?> <cluster alias="gfs-test" config_version="29" name="gfs-test"> <quorumd device="/dev/web/web" interval="1" min_score="1" tko="10" votes="2"> <heuristic interval="10" program="/bin/ping -t1 -c1 147.83.41.1" score="1"/> </quorumd> <fence_daemon post_fail_delay="0" post_join_delay="3"/> <clusternodes> <clusternode name="node1.fib.upc.es" nodeid="1" votes="1"> <fence> <method name="1"> <device name="gfs-test" nodename="node1.fib.upc.es"/> </method> </fence> </clusternode> <clusternode name="node2.fib.upc.es" nodeid="2" votes="1"> <fence> <method name="1"> <device name="gfs-test" nodename="node2.fib.upc.es"/> </method> </fence> </clusternode> </clusternodes> <cman/> <fencedevices> <fencedevice agent="fence_manual" name="gfs-test"/> </fencedevices> <rm> <resources> <clusterfs device="/dev/home2/home2" force_unmount="0" fsid="1605" fstype="gfs" mountpoint="/home2" name="home alumnes" options=""/> </resources> </rm> </cluster> Any help will be welcomed. Thanks, Sandra

2 1

help!
by Roland RoLaNd 24 Mar '10

24 Mar '10

hello, i've just wrote the following : more ./*.csv | grep -i XXX | echo "Dear XXX, This email is for informative purposes. Your total number of hours for the week of `date` is: `cut -d, -f2` hours Kindly note that the average weekly working hours is : 40." | /usr/sbin/sendEmail -t mail(a)domain.com -u Test email- disregard it -f othermail(a)subdomain.com -s smtp.domain.com:25 this looks in a csv file that exists in the same directory for XX and outputs the field right next to it as you notice from : `cut -d, -f2` It's working pretty fine for just one user, but i have to do the same for 432 person. and its obviously not as professional as it should be due to the following reasons: 1. i have to fill the name for each person in place of XXX as well as their MAIL(a)domain.com 2. the date command gives the hour as well which is a bit annoying can anyone guide me on how to proceed? as you notice im a bit of a newbie with bash and im trying my best to improve my one liners/scripts thanks :) _________________________________________________________________ Hotmail: Trusted email with powerful SPAM protection. https://signup.live.com/signup.aspx?id=60969

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Patched KVM RPMs (solves 'network shutdown under heavy load')
by Timo Schoeler 24 Mar '10

24 Mar '10

Hi list, due to the necessity of having a patched KVM running, I build some new RPMs. However, only kmod-kvm-83-105.27.x86_64.rpm is important to replace the 'original' one as it's the only package that contains the patch. I didn't rename the packages, though, hopefully in order not to break the upgrade path provided to us. The patch adresses following problem: 'Fix a race condition where qemu finds that there are not enough virtio ring buffers available and the guest make more buffers available before qemu can enable notifications.' [0], the thread startet as 'network shutdown under heavy load' [1]. KVM already contains the fix (since February 19th, IIRC), CentOS' packages doesn't. The RPMs can be found here: http://www.riscworks.net/CentOS/KVM/fix-virt-io-ring-buffer-race/ Best, Timo [0] -- http://marc.info/?l=kvm&m=126564542625725&w=2 [1] -- http://www.mail-archive.com/kvm@vger.kernel.org/msg26033.html

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Publishing a webcam on a web page?
by Stephen Harris 24 Mar '10

24 Mar '10

This talk of cameras has reminded me of a problem I've not yet been able to solve. I have a Logitech Communicate STX ( ID 046d:08ad Logitech, Inc. QuickCam Communicate STX ) This seems to work under v4l on CentOS 5.4. If I load xawtv (from rpmforge) then I can view the image from the camera. But what I'd like to be able to do is have the image appear on a web page (maybe streaming video or maybe multi-part image using old-fashioned server-push web technology from 1995 :-)). Anyone have any recommended tools for this? Thanks! -- rgds Stephen

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Configure Webcam in centos 5.4
by Krishna Chandra Prajapati 23 Mar '10

23 Mar '10

Hi list, I looking for a solution about how to configure webcam in centos 5.4 What are the webcam packages available in centos. Any help is highly appreciated. Regards, Krishna

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kafi25@gmail.com
by kafi Mouhamed Radouane 23 Mar '10

23 Mar '10

kafi25(a)gmail.com

1 0

Connect to MySQL monitor on another host in the LAN ?
by Niki Kovacs 23 Mar '10

23 Mar '10

Hi, I'm running a medical application on a local network, using MySQL as a database. The application can also connect to remote hosts, so the idea is to install it on one machine acting as a "server", and then install it on the other machines on the LAN, but configure these to use the database on the "server". I guess before doing that, I'll better try and get comfortable with connecting remotely using the MySQL monitor itself, that is, without any application or some other frontend. Up until now, I've only configured MySQL in two situations. Either on standalone desktop workstations, or on a web server (LAMP). After installing MySQL (yum install mysql-server), the default setup has a few accounts without any password. First thing I usually do (correct me if this is wrong) is clean up these accounts and only keep one main root@localhost account. Something like this : [root@raymonde:~] # mysql Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 2 Server version: 5.0.77 Source distribution Type 'help;' or '\h' for help. Type '\c' to clear the buffer. mysql> use mysql; Reading table information for completion of table and column names You can turn off this feature to get a quicker startup with -A Database changed mysql> select user, host, password from user; +------+-----------+----------+ | user | host | password | +------+-----------+----------+ | root | localhost | | | root | raymonde | | | root | 127.0.0.1 | | | | localhost | | | | raymonde | | +------+-----------+----------+ 5 rows in set (0.00 sec) mysql> delete from user where user = ''; Query OK, 2 rows affected (0.01 sec) mysql> delete from user where host = 'raymonde'; Query OK, 1 row affected (0.00 sec) mysql> delete from user where host = '127.0.0.1'; Query OK, 1 row affected (0.01 sec) mysql> select user, host, password from user; +------+-----------+----------+ | user | host | password | +------+-----------+----------+ | root | localhost | | +------+-----------+----------+ 1 row in set (0.00 sec) mysql> set password for root@localhost = password('********'); Query OK, 0 rows affected (0.00 sec) mysql> select user, host, password from user; +------+-----------+------------------+ | user | host | password | +------+-----------+------------------+ | root | localhost | 2d97271980b60f82 | +------+-----------+------------------+ 1 row in set (0.00 sec) mysql> quit; So much for the standalone setup. Now what would be an orthodox (and somewhat secure) configuration to be able to connect to this MySQL server on 'raymonde' from another machine in the LAN ? Do I have to (re)create a root@raymonde MySQL account and eventually give it the same password than root@localhost ? Cheers, Niki

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