- Discuss - lists.centos.org

unable to check in code to svn when files contain spaces or characters
by Agnello George 26 Jan '11

26 Jan '11

i got a file like this and i need add it into my svn admin/upload_data/FINAL leg list 19_01_2010 to agar (Merged data in one).xls i as able to add other files with space using the following command : svn st |grep ? |cut -c8- |sed 's/ /\\ /g' |xargs svn add however there are some special characters like ( ) +#@ that svn cannot understand as the full path of the file . can some one help me in this in perl or in shell . -- Regards Agnello D'souza

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kickstart and grub parameters
by Keith Keller 26 Jan '11

26 Jan '11

Hey list, I recently started working with kickstart. It is awesome! I really had no idea how easy it would be to use. I do have one strange issue, that's really not that important, but that I'd like to figure out. I like to watch all the kernel boot messages go by in text mode by default, and when I've set up a box in the past, I've modified grub's menu.lst file to remove all the GUI components of the boot. But when I try this from a kickstart-installed box, either from a %post section or manually, I still get (mostly) the GUI boot process. Here's my relevant menu.lst exerpts: first, the one working the way I like: #boot=/dev/hda default=0 timeout=5 #splashimage=(hd0,0)/grub/splash.xpm.gz #hiddenmenu title CentOS (2.6.18-194.11.4.el5) root (hd0,0) kernel /vmlinuz-2.6.18-194.11.4.el5 ro root=LABEL=/ initrd /initrd-2.6.18-194.11.4.el5.img Then, the one not behaving the way I expect: #boot=/dev/sda default=0 timeout=5 #splashimage=(hd0,0)/grub/splash.xpm.gz #hiddenmenu title CentOS (2.6.18-53.el5) root (hd0,0) kernel /vmlinuz-2.6.18-53.el5 ro root=LABEL=/ initrd /initrd-2.6.18-53.el5.img I'm not sure why they're behaving differently; AFAICT the two are the same modulo the kernel version. Any suggestions for what I can look at next? --keith -- kkeller(a)wombat.san-francisco.ca.us

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Re: [CentOS] Recommendation for a Linux alternative to Centos - ATH9K disaster
by Les Bell 25 Jan '11

25 Jan '11

Les Mikesell <lesmikesell(a)gmail.com> wrote: >> Running XP as a server??? << There are lots of bloatware Windows products which use MS SQL server as an embedded database, Les. My personal favourite was the software for a TV tuner card (Pinnacle) which used SQL Server to store its program schedule. Bloatware of the first order, and unstable as hell, too. Meanwhile, for those who a spot of schadenfreude: http://failblog.org/2011/01/25/m-thru-f-why-so-blue/ Best, --- Les Bell [http://www.lesbell.com.au] Tel: +61 2 9451 1144

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mail problems after setting up lynx for https with c_rehash
by Rob Kampen 25 Jan '11

25 Jan '11

Hi List, I am not sure it's related but after I ran c_rehash over my ssl certificate directory I am having email delay problems. 1. my thunderbird client now regularly times out and tells me the smtp server is not available - a retry always works - this never occurred before. I do use TLS for the smtp server on port 25 for my connection. 2. another mail server that regularly sends me mail reports:- ********************************************** ** THIS IS A WARNING MESSAGE ONLY ** ** YOU DO NOT NEED TO RESEND YOUR MESSAGE ** ********************************************** The original message was received at Mon, 24 Jan 2011 21:12:16 -0800 from relay07 [10.183.136.126] ----- Transcript of session follows ----- <rkampen(a)reaching-clients.com>... Deferred: 403 4.7.0 TLS handshake failed. Warning: message still undelivered after 1 minute Will keep trying until message is 5 days old The mails arrive just fine a bit later - related?? I have checked the load on the server - low I have checked maillog and can see nothing different or unusual running centos 5.5 on 2.6.18-194.26.1.el5 BTW lynx with https is working just fine now Not sure where to look next - any ideas or suggestions appreciated TIA

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adding raid1 to running system
by dwoody1 25 Jan '11

25 Jan '11

I have followed the procedure on the Centos page: http://wiki.centos.org/HowTos/CentOS5ConvertToRAID My setup is slightly different. I am using two partitions, / and /home. I have setup swap as a file, /home/swapfile. My hard drives are 500Gig sda and sdb. In modifying the instructions for initializing sdb I have: used /dev/md0 for / (sdb1) used /dev/md1 for /home (sdb2) In section 3.6 The line: mount /dev/RaidSys/Root /mnt/root.new was changed to mount /dev/md0 /mnt/root.new Everything seems to go well until I get to section 4.4.1/4.4.2 Install grub. The commands for installing grub show success but when I edit the /mnt/root.new/boot/grub/menu.lst the contents still point to hd0 not hd1. In section 4.4.4 I am not sure how the following should be changed: umount /mnt/boot.new mount /dev/md0 /mnt/root.new/boot The umount is not needed in my case but should the second line be: mount /dev/md0 /mnt/root.new Other info I have found includes creating a /etc/mdadm.conf. This is not referred to in the instructions. Are the changes I have made correct? Am I missing any other changes? Thanks for any help, David

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mysqld status discrepancy
by ken 25 Jan '11

25 Jan '11

Bug, explainable, or expected?? Checking the status of mysqld as root, then as a regular user: # /etc/init.d/mysqld status mysqld (pid 4806) is running... $ /etc/init.d/mysqld status mysqld dead but subsys locked

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kernel security issues
by Dave 25 Jan '11

25 Jan '11

Hi, after watching the security alerts for the centos kernel I've the impression that altought they are fixed fastly there are more alerts than for the vanilla one of the same version. Question: Are those alerts mostly specifically centos related or do they also affect the vanilla sources? -- mailintern(a)123mail.org -- http://www.fastmail.fm - Access your email from home and the web

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tar-ing subdirectories separately
by Johan Martinez 25 Jan '11

25 Jan '11

I want to backup a directory using tar, but want separate tarballs for each subdirectory. For example: # ls dir1 subdir1 subdir2 subdir3 Will it possible to do it using only tar command? Or will I need another separate piece of logic/control? I thought of writing a shell script with three tar commands for each subdirectory, but that's not elegant way of doing it. Also, it may not scale as number of subdirectories change. Any other solutions or tips for doing this will be really helpful. Thank you jM

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kernel security issues+
by Dave 25 Jan '11

25 Jan '11

-- mailintern(a)123mail.org -- http://www.fastmail.fm - A no graphics, no pop-ups email service

1 0

kernel update
by mahmoud mansy 25 Jan '11

25 Jan '11

hey guys, i wanna update the kernel of thw centos 5.5,to the 2.6.32 version! is there any compatablity issues with stuff like glibc or otheres!

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iproute2 custom tables and rules the CentOS way...
by Ray Van Dolson 24 Jan '11

24 Jan '11

Hi all; I have a custom iproute2 table and a few rules to go along with it (CentOS 5) -- I have added the table to /etc/iproute2/rt_tables. if-up and friends doesn't seem to handle this real gracefully. How are those of you out there doing something similar managing this customization? I don't really want to muck with /etc/init.d/network or the if-up scripts to avoid breaking upgrades. rc.local my best bet? Thanks, Ray

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putting "/tmp" to memory
by kellyremo 24 Jan '11

24 Jan '11

"to memory" means: mounting a ~2 GByte filesystem [ tmpfs?, or ramfs? ], and put the "/tmp" on it. [ e.g.: 4 GByte ram in the pc ]. what to write in the "/etc/fstab"? I would like to collect the [ answers too:P ]: Advantages: - Memory is way faster then HDD/SSD, so it could speed things up - "SSD amortization" is less Disadvantages: - Security? [ how to set this up to be secure? any clear howtos/links regarding it? :O ] Really thank you for any good help...

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Re: [CentOS] Is it okay?
by Lisandro Grullon 24 Jan '11

24 Jan '11

Why don't you download the DVD, it give you much more than disc 1. >>> Parshwa Murdia 01/19/11 1:41 PM >>> Hi, I have downloaded the following version: CentOS-5.5-i386-LiveCD-Release2.iso from the mirror: http://ftp.iitm.ac.in/centos/5.5/isos/i386/ What I want to ask is that 'Release2' is the complete OS and after installation we can use 'yum update'. So at first, is it enough (as I am not going to download the complete set of 7 CDs)? -- Regards, Parshwa Murdia Making the simple complicated is commonplace, making the complicated simple, awesomely simple, that's innovation.. -C Mingus _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos

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Re: [CentOS] Why one shouldn't cross post [was: putting "/tmp" to memory]
by m.roth＠5-cent.us 24 Jan '11

24 Jan '11

Rudi Ahlers wrote: > On Mon, Jan 24, 2011 at 3:33 PM, Leonard den Ottolander > <leonard(a)den.ottolander.nl> wrote: >> On Sun, 2011-01-23 at 21:00 -0500, Mailing List wrote: >>> I can not see the reason to why his question is being scrutinized. If >>> I needed an answer whether it be homework or legitimate work I was doing, I would >>> ask where ever I thought I would get the right answer. >> >> Cross posting, especially such basic questions is frowned upon. It's a >> very selfish attitude, childish even, as in "I need everyone's attention >> and I need it right now". It shows you don't appreciate the effort <snip> > > Instead of wasting time and bandwidth on this flame, why not just tell > him what todo? Rudi, this is an explanation of *why* it's frowned on, and a link to the std. nettiquitte FAQ. If you think this is a flame, you've never seen a *real* flame. Or, for that matter, google for someone being MSTed.... mark, who got on usenet in '91

1 0

ifcfg-rh: error: Unknown connection type 'Bridge'
by James B. Byrne 24 Jan '11

24 Jan '11

CentOS-5.5 # uname -a Linux inet05.hamilton.harte-lyne.ca 2.6.18-194.32.1.el5 #1 SMP Wed Jan 5 17:52:25 EST 2011 x86_64 x86_64 x86_64 GNU/Linux Can anyone tell me why I am seeing these error message? Specifically, why is TYPE=Bridge giving Unknown connection type 'Bridge'? Jan 13 08:25:31 inet05 nm-system-settings: Loaded plugin ifcfg-rh: (c) 2007 - 2008 Red Hat, Inc. To report bugs please use the NetworkManager mailing list. Jan 13 08:25:32 inet05 nm-system-settings: ifcfg-rh: parsing /etc/sysconfig/network-scripts/ifcfg-lo ... Jan 13 08:25:32 inet05 nm-system-settings: ifcfg-rh: parsing /etc/sysconfig/network-scripts/ifcfg-bridge0 ... Jan 13 08:25:32 inet05 nm-system-settings: ifcfg-rh: error: Unknown connection type 'Bridge' Jan 13 08:25:32 inet05 nm-system-settings: ifcfg-rh: parsing /etc/sysconfig/network-scripts/ifcfg-eth0 ... Jan 13 08:25:32 inet05 nm-system-settings: ifcfg-rh: read connection 'System eth0' Jan 13 08:25:32 inet05 nm-system-settings: ifcfg-rh: Ignoring connection 'System eth0' and its device because NM_CONTROLLED was false. Jan 13 08:25:32 inet05 gconfd (byrnejb-5832): Resolved address "xml:readwrite:/home/byrnejb/.gconf" to a writable configuration source at position 0 Jan 13 08:25:34 inet05 pcscd: winscard.c:304:SCardConnect() Reader E-Gate 0 0 Not Found Jan 13 08:25:35 inet05 nm-system-settings: Adding default connection 'Auto eth0' for /org/freedesktop/Hal/devices/net_00_1c_c0_d2_ef_82 My script files look like this: #bridge0 DEVICE=bridge0 TYPE=Bridge BOOTPROTO=static IPADDR=216.185.71.25 NETMASK=255.255.255.0 GATEWAY=216.185.71.1 ONBOOT=yes #eth0 DEVICE=eth0 ONBOOT=yes BRIDGE=bridge0 NM_CONTROLLED=no -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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curious reboot output
by Tim Dunphy 24 Jan '11

24 Jan '11

Hello list! I was just curious about the output of a command I typed. [root@LCENT02:~] #last reboot | head -1 reboot system boot 2.6.18-194.26.1. Wed Dec 29 20:03 (24+01:33) This is odd because this machine was rebuilt today (Saturday 1/22) in mid afternoon. Just curious how the output of this command could NOT know this? Also I notice that on select machines the command init 6 does not seem to reboot the machine. I have to type the reboot command in order for this to actually happen. Any troubleshooting tips here? Thanks -- GPG me!! gpg --keyserver pgp.mit.edu --recv-keys F186197B

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Re: [CentOS] ethernet configuration
by Ritika Garg 24 Jan '11

24 Jan '11

I gave '/sbin/ifconfig | grep HWaddr' to get the MAC address but its not returning anything.

4 3

how to control Hard Drive light from Linux?
by Rudi Ahlers 24 Jan '11

24 Jan '11

Hi all, Does anyone know how to control a hard drive light from Linux? I'm building a 24bay Linux File server which will run software RAID and I need an easy way for the engineers to see which HDD has gone bad. Most of our NAS devices has 2 lights on the hard drive cages and they automatically signal a bad one (reg light, light constant on , etc) but I can't figure out how todo this from Linux. -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

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pen drive, hard disk, cd not being detected
by Ritika Garg 23 Jan '11

23 Jan '11

I am working in Centos5.5. Pen drive, hard disk, cd are not being recognised. During booting, "mounting local filesystems [failed]" is displayed among other errors which I am unable to see as the messages proceed fast. Are these messages stored in some file, so that I can check them and report all the errors that are displayed during booting.

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NOD32 on Linux
by kellyremo 23 Jan '11

23 Jan '11

Anyone using it? http://beta.eset.com/linux What are the experiences? Does it slows down the pc? Do we need it?

4 3

nspluginviewer crashes on Konqueror web browser
by Keith Roberts 23 Jan '11

23 Jan '11

Does anyone else have this problem on Centos 5.5 ? Message from KDE Crash Handle is: The application unknown (nspluginviewer) crashed and caused the signal 11 (SIGSEGV) Kind Regards, Keith Roberts ----------------------------------------------------------------- Websites: http://www.karsites.net http://www.php-debuggers.net http://www.raised-from-the-dead.org.uk All email addresses are challenge-response protected with TMDA [http://tmda.net] -----------------------------------------------------------------

1 0

tcptrack for Centos 5.5 32bit rpm
by Keith Roberts 23 Jan '11

23 Jan '11

Hi list. I have rebuilt tcptrack now. You can get it from here: http://www.karsites.net/centos/downloads/5.5/tcptrack-1.3.0-1.el5.i386.rpm It's not signed, so to install it with yum as root user, do: # yum localinstall --nogpgcheck tcptrack-1.3.0-1.el5.i386.rpm in the directory you d/l it to. Kind Regards, Keith Roberts ----------------------------------------------------------------- Websites: http://www.karsites.net http://www.php-debuggers.net http://www.raised-from-the-dead.org.uk All email addresses are challenge-response protected with TMDA [http://tmda.net] -----------------------------------------------------------------

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Mount Point Ownership & Group
by Manish Kathuria 23 Jan '11

23 Jan '11

I am facing problems assigning the owner and group to an ext3 filesystem being mounted from an external storage. I created a mount point /vol and changed its owner and group to alpha and beta respectively (as required). The ext3 filesystem (LV from the external storage) was then mounted on /vol using the mount command. However, after mounting the filesystem the owner and group of /vol changed back to root. How do I ensure that the owner and group for this (and other) external filesystem to be mounted dynamically are preserved as required ? The mount options uid and gid don't seem to work for ext3 filesystems. Are there any other options for this purpose? Thanks, Manish

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Re: [CentOS] Missing Dependency
by Terry Hickey 23 Jan '11

23 Jan '11

I'm not sure what the problem is here. I asked a simple question. If I did not give enough or gave the the wrong information, a simple message to that end would have been good. I don't have a bunch of letters behind my name. I am almost entirely self taught. I started with Linux in 1995 on an old slackware server a very knowledgeable man built for me and was my remote lifeline for the first couple of years. Since then I have built and ran probably 15 Internet servers ranging from old slackware stuff to Redhat. I just retired my last Redhat 9 server a while ago. I currently have in service Gentoo, Fedora, CentOS and a Cacti Monitoring server that I can't remember the flavor of Linux they built it on. When I get a problem I don't know what to do, I Google or go to one of my many bookmarked sites. Or, I ask someone if all else fails. So, I was designing a Web Site and one of the scripts didn't work. Looking at the error logs and googling the error led me to determine my PHP needed an upgrade and even listed a painless way to do it. However, it didn't work because of a missing dependency. I had not found the answer about to how to fix the dependency problem and, I had joined this list about a week ago. I have been very impressed with the quality of most of the posts so I thought I would ask here. I am not really interested if the version of PHP came bundled with 4.8 or not. It seems it didn't. I probably upgraded it to fix another error I was getting. I thought I had given all the relative information with my first question. Sorry for bothering you. Terry ----- Original Message ----- From: "Kai Schaetzl" <maillists(a)conactive.com> To: <centos(a)centos.org> Sent: Saturday, January 22, 2011 2:31 PM Subject: Re: [CentOS] Missing Dependency > Karanbir Singh wrote on Sat, 22 Jan 2011 16:29:42 +0000: > >> Quite an irrelevant point Kai, its shipped in the centosplus repo[1] and >> this is the centos list, making this the perfect place to bring up the >> issue. > > Karanbir, you are in the wrong thread. I didn't question the location for > the topic, I questioned the quality of information. > > Kai > > -- > 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

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rsync via crontab spawns over 20 processes
by aurfalien＠gmail.com 23 Jan '11

23 Jan '11

Hi all, I've been running rsync via cron for a while now and all is well. However on one particular new 5.5 box, whenever its runs via crontab, the machine ends up with over 20 rsync processes and a load of ~14 and eventually the machine dies. But when running manually, I see it spawn 3 processes with a load of 1.5. My rsync command is simply; rsync --delete -avvH --progress source target Any thoughts? - aurf

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ethernet configuration
by Ritika Garg 23 Jan '11

23 Jan '11

I pressed the tab "probe" by mistake near "bind to MAC address" in system->administration->network->edit->hardware device. After this the MAC address disappeared. Internet is not working. Shall I write the MAC address and activate again?

2 1

iscsi-iname
by rainer＠ultra-secure.de 23 Jan '11

23 Jan '11

Hi, I'm trying to set my iSCSI initiator name to a different value than the default. I edited /etc/iscsi/initiatorname.iscsi but iscsi-iname still shows the old value. How would I change it so it reflects the hostname? Best Regards, Rainer

1 0

Let's talk about compression rates
by S Mathias 23 Jan '11

23 Jan '11

http://pastebin.com/raw.php?i=MwDnhknf $ ls -Sl total 461252 -rw-rw-r--. 1 g g 111709730 Jan 22 11:06 linux-2.6.37.zip -rw-rw-r--. 1 g g 93174605 Jan 22 11:03 linux-2.6.37.tar.gz -rw-rw-r--. 1 g g 73552510 Jan 22 11:10 linux-2.6.37.tar.bz2 -rw-rw-r--. 1 g g 66333786 Jan 22 11:16 linux-2.6.37.7z -rw-rw-r--. 1 g g 64035788 Jan 22 11:16 linux-2.6.37.tar.7z -rw-rw-r--. 1 g g 63480808 Jan 22 11:20 linux-2.6.37.tar.xz $ I presume kernel.org knows this. Why doesn't people use e.g.: XZ? This is the same as in PDF's. DJVU files could be amazing too. They could compress [convert] a 400 MByte PDF to a 20 MByte DJVU. Amazing. Why don't these technologies spread?? Any opinions regarding it? Thanks.

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cloning a server
by PA 22 Jan '11

22 Jan '11

Hi, I have a centos 5 (current) mail server that I have compiled dovecot/postfix and installed some packages like mysql etc. These packages have been configured and changed to my liking. How can I now save all this and install it on another server without having to do all the work of compiling installing and configuring the same applications. Is it possible to burn this server image into multiple DVD's make it bootable and then install on another server. Basically I want to clone this server and make it easy to install on another similar hardware server without having to install centos and then manually installing/configuring dovecot/postfix/mysql etc. Not sure if I can create a bootable ISO that will install on new servers or what my options are. I would appreciate any suggestions. Paul

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Missing Dependency
by Terry Hickey 22 Jan '11

22 Jan '11

Problem: I am trying to update the php package PHP Version 5.1.6 on CentOS release 4.8 to get rid of a script error: "PHP Fatal error: Call to undefined function dom_import_simplexml" while running yum update php I get the following --> Running transaction check --> Processing Dependency: libt1.so.5 for package: php-gd --> Finished Dependency Resolution Error: Missing Dependency: libt1.so.5 is needed by package php-gd I have searched on google and none of the solutions seem to work. Does anyone have any ideas? Terry

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Re: [CentOS] How to disable screen locking system-wide?
by Giles Coochey 22 Jan '11

22 Jan '11

And in those nine years you claim to have had at least one major security incident. It beggars my belief.... You now publicly declare that your company not just advocates the sharing of passwords, but certainly encourages it, if not make it compulsory. If you were to have another security incident you would probably be hard pressed to be able to point the finger at anyone, especially as your lax security procedures are now public knowledge. Troll? Sorry for top posting Sent from my HTC Smartphone ----- Reply message ----- From: "Rudi Ahlers" <Rudi(a)SoftDux.com> Date: Thu, Jan 20, 2011 17:44 Subject: [CentOS] How to disable screen locking system-wide? To: "CentOS mailing list" <centos(a)centos.org> On Thu, Jan 20, 2011 at 6:29 PM, Giles Coochey <giles(a)coochey.net> wrote: > On 20/01/2011 17:11, Rudi Ahlers wrote: >> >> The message I'm trying to bring across is that users in the company >> shouldn't have passwords which admin doesn't know, or can't access. >> The PC's and data, well at least in our company, is the property of >> the company. Making it more difficult for an engineer to gain access >> to a user's PC automatically arises suspicion >> > > Hi Rudi, > > Your stance on this is counter-intuitive to me, are you able to cite any > good reference which recommends that administrators know user passwords? > > -- No, I can't. But I've been running a hosting & development company for 9 years now and this is the first problem I get out of the way right on the first day of an employees job. I'm personally involved in the accounts department (when I actually get time) since I want to know what goes on in my company. I also work close with the developers when needed. We trust everyone in the office, and being it an open-plan office, it's easy to see if someone is at someone else's desk when they're not supposed to be. Staff logoff and shutdown every night, so that's not an issue. But, it is a big issue when a staff member goes on leave, or even just on lunch and switch-off their cellphones and I can't get hold of them to get a password to login to a PC if I need to. The account PC, for that matter is encrypted, with no network access so one needs to be in front if it to access the data. User accounts also doesn't mean much to me. I know how it sounds, but I care more about the data than the user's account. As long as I can access whatever I want, whenever I want. -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532 _______________________________________________ CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos

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Storage Area Network
by Nastou Panagiotis 22 Jan '11

22 Jan '11

Hello, I have a Rocks cluster based on Centos 5.2. Can this Centos version support a Storage Area Network? What kind of software do I need for installing and managing it? Regards, Panos Nastou Dpt of Mathematics Aegean University Samos Island Greece

2 1

Xen; xm usb-add syntax - or - where is xm usb-attach
by aurfalien＠gmail.com 22 Jan '11

22 Jan '11

Hi all, I'm running Centos 5.5 with Xen 4.0.1 Would like to use a USB key (not a block device) in my domU. Dom0 lsusb yields; Bus 002 Device 004: ID 064f:0bd8 ABC-Systems AB CDE/FG xm usb-add shows; Usage: xm usb-add <domain> <[host:bus.addr] [host:vendor_id:product_id]> Not sure what combo will work in this case. However, I've read some notes regarding xm usb-attach. What subset of Xen do I need for this command to show? - aurf

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CentOS and Dell MD3200i / MD3220i iSCSI w/ multipath
by Edward Morbius 22 Jan '11

22 Jan '11

We've been wrestling with this for ... rather longer than I'd care to admit. Host / initiator systems are a number of real and virtualized CentOS 5.5 boxes. Storage arrays / targets are Dell MD3220i storage arrays. CentOS is not a Dell-supported configuration, and we've had little helpful advice from Dell. There's been some amount of FUD in that Dell don't seem to know what Dell's own software installation (the md3 Dell doesn't seem to have much OS experience generally. Their docs are pretty inconsistent. I've noted omissions, terminology differences, and procedural differences among the "Owner's Manual", "Deployment Guide", a professional services "Remote Services Installation Agreement" service description. Some of the multipathing guidance we've had comes from their EqualLogic line of storage servers. Questions: 1: Is there anyone out there running this configuration and are you satisfied with it? 2: We get a set of error messages on the initator at target login. These appear to be benign, and web research suggests it's the result of a driver configuration issue in trying to send instructions to a http://comments.gmane.org/gmane.linux.iscsi.open-iscsi/5970 http://bit.ly/gguLl7 MD3000i boxes have 1 controller that can execute IO and one that cannot execute READ/WRITE IO until a special command is sent. In older kernels, layers like the partition scanning and udev and hal would send down IO to those disabled paths and we would see IO errors like in your link. In newer kernels we have device handler modules (for MD3000i you would want scsi_dh_rdac (so do "modprobe scsi_dh_rdac" and then lsmod to see if it is there)) that will detect if the path is not active and if so it will either not send the IO or it will not print a error message since we expect the IO to fail. We'd prefer *not* seeing spurious I/O errors that we don't have to sift through looking for real storage issues. 3: The MD32xxi series is a dual-controller array with multiple ports on each controller. Multiple targets can be logged into from an initiator, with the pathways aggregated by the Linux multipath (device-mapper-multipath) system. There's very little clear documentation on multipath. In particular, any way to trigger alerting from multipath events / failures, or iscsi session actions, would be helpful. The MD32xxi series only supports reporting from a GUI management utility (MDSM) which would be at best problematic to run in a server environment. The other question is: is multipathing typical of iSCSI configuation? Little of the iSCSI docs I've found discusses multipath configurations at all: http://www.open-iscsi.org/ http://www.cuddletech.com/articles/iscsi/index.html (good but very dated) http://www.cyberciti.biz/tips/rhel-centos-fedora-linux-iscsi-howto.html (no mention of multipathing) 4: Dell suggests a shutdown procedure including a flush of multipathing paths ("multipath -F" -- in the "Owner's Manual"): 3 Flush the Device Mapper multipath maps list to remove any old or modified mappings # multipath F Presumably this would go into one of the init scripts -- perhaps the /etc/init.d/multipath script, as part of the "stop" sequence (after the multipath daemon is killed). Anyone done this or know why the practice is recommended? Based on our experience with Dell I would NOT recommend this configuration for others. But we're stuck with it, and any help in getting things configured would be very helpful and gratefully received. I'm also hoping to get clearance to release docs we've generated, though that's the subject of some internal negotiation. -- Dr. Ed Morbius Chief Scientist Krell Power Systems Unlimited

3 5

vmware
by mattias 22 Jan '11

22 Jan '11

Can i run xen and vmware on the same machine?

6 10

smartmontools SRPM fails
by Mike McCarty 22 Jan '11

22 Jan '11

I want to install smarmontools v 5.40, and so I pulled the SRPM for 5.39 so I could patch and install... $ wget -Nc ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/s… However, the install of the source fails. $ rpm -ivh smartmontools-5.39.1-2.el6.src.rpm warning: smartmontools-5.39.1-2.el6.src.rpm: V3 RSA/MD5 signature: NOKEY, key ID fd431d51 1:smartmontools warning: user mockbuild does not exist - using root warning: group mockbuild does not exist - using root ########################################### [100%] error: unpacking of archive failed on file /home/jmccarty/devtools/RebuildRPM/build/SOURCES/smartd.initd;4d39deaa: cpio: MD5 sum mismatch Is the SRPM corrupted? I've pulled a few from other places for other versions (like Fedora) from pbone, and they all have this problem. Any hints available? Mike -- p="p=%c%s%c;main(){printf(p,34,p,34);}";main(){printf(p,34,p,34);} Oppose globalization and One World Governments like the UN. This message made from 100% recycled bits. You have found the bank of Larn. I speak only for myself, and I am unanimous in that!

4 7

vmware
by mattias 21 Jan '11

21 Jan '11

I solved it I installed the openvz kernel without openvz utilites And now vmware works

1 0

Let's talk about HTTPS Everywhere
by S Mathias 21 Jan '11

21 Jan '11

Ok. It's a Firefox Add-on: https://www.eff.org/https-everywhere Questions: 1) But: Why can't i find it on the offical Firefox Add-ons site?: https://addons.mozilla.org/en-US/firefox/ 2) Did anyone audited the "HTTPS Everywhere" code? 3) Can someone trust this Add-on? Is it safe to install/use? 4) If it's so great why isn't it more prevalent? What's youre opinion? Or answer? :\ Thanks!

11 18

how to set imagemagicks tmp folder?
by S Mathias 21 Jan '11

21 Jan '11

my /tmp is too small [when i want to use "convert"]. how can i set imagemagick, to use an other tmp folder, what has enough space? thank you!

6 8

Is there a difference between RHEL 6 and 5.6?
by Robert Moskowitz 21 Jan '11

21 Jan '11

I have seen over the past few months subjects on RHEL 6 and RHEL 5.6 Are these two different builds for Centos to chase or one in the same?

6 8

looking for a package
by m.roth＠5-cent.us 21 Jan '11

21 Jan '11

I'm trying to update a workstation, and it wants to update mpeg2-utils. But that has a dependency of libmpeg2-0.5.1-3, for i386. epel doesn't have it, and I tried looking on rpmfusion.org, and I can only find a very few packages there. Anyone have an idea which of the regular repositories carries libmpeg2? mark

5 4

oprofile problem in centos with custom kernel
by Yannis Klonatos 21 Jan '11

21 Jan '11

Hi! I am trying to profile my custom 2.6.37 linux kernel with oprofile in centos 5.5, and i have encountered the following problem. (Before everyone starts shouting, I know that custom kernels are not supported by centos team, however I really need to run a modified version, due to a project concerning my MSc thesis. So i hope for your understanding :-) . I have build the kernel with the following flags: CONFIG_DEBUG_KERNEL=y CONFIG_OPROFILE=y # CONFIG_OPROFILE_EVENT_MULTIPLEX is not set CONFIG_HAVE_OPROFILE=y CONFIG_FRAME_POINTER=y CONFIG_KPROBES=y CONFIG_HAVE_KPROBES=y CONFIG_KPROBE_EVENT=y CONFIG_SAMPLE_KPROBES=m under various suggestions i have googled in the net. I run oprofile using the following instructions: #!/bin/bash rm oprof_output.txt /usr/bin/opcontrol --init /usr/bin/opcontrol --setup --event=CPU_CLK_UNHALTED:100000:0:1:1 --vmlinux /usr/src/kernels/linux-2.6.37/vmlinux /usr/bin/opcontrol --reset /usr/bin/opcontrol --start /usr/bin/opcontrol --stop /usr/bin/opcontrol --dump /usr/bin/opreport -f -a -l --symbols --image-path=/lib/modules/$(uname -r)/kernel >> oprof_output.txt My problem is that the output reported by a simple run contains many of the following lines 304 304 26.0051 26.0051 /vmlinux-unknown /vmlinux-unknown /vmlinux-unknown 186 490 15.9110 41.9162 /vmlinux-unknown /bin/bash /vmlinux-unknown any idea or suggestion as how to resolve the vmlinux-unknown problem? I would gladly provide any other information you may need. Thanks in advance, Yannis

1 0

Re: [CentOS] cloning a server
by Paul A 21 Jan '11

21 Jan '11

I was looking into this, creating my own rpms and using kickstart. Thanks for all the info guys. Paul Spiro Harvey <spiro(a)knossos.net.nz> wrote: >> Basically I want to clone this server and make it easy to install on >> another similar hardware server without having to install centos and >> then manually installing/configuring dovecot/postfix/mysql etc. Not >> sure if I can create a bootable ISO that will install on new servers >> or what my options are. I would appreciate any suggestions. > >We use Kickstart. > >You can build a customised Kisckstart script to install anything you >want. Just put custom config files accessible off a web server, and you >can just copy those over as part of the setup. Or package them up into >your own RPMs and run your own repo. In fact, if you're doing several >of these, it's probably recommended to run your own repo with the base >and updates for speed and bandwidth savings. > >You can have kickststart run a "yum update" so each box will have the >latest updates as at install time. > >Your boot CD or flash stick can auto-boot the kickstart files, so all >you have to do is insert the media and turn the box on. Once it's done, >all you have to do is reboot and you're ready to go. > > >-- >Spiro Harvey Knossos Networks Ltd >(04) 460-2531 : (021) 295-1923 www.knossos.net.nz > >_______________________________________________ >CentOS mailing list >CentOS(a)centos.org >http://lists.centos.org/mailman/listinfo/centos

1 0

/etc/rc.conf on CentOS 5.5?
by Jason S-M 20 Jan '11

20 Jan '11

Hi All I am investigating an Apache change I was told about that involved adding apache22_http_accept_enable="YES" to /etc/rc.conf, but I don't think this exists on CentOS 5. Can anyone help me decide where to make this change? -Jason

4 5

problems with OpenVPN 2.1.4 on Centos 5.5
by Boris Epstein 20 Jan '11

20 Jan '11

Hello listmates, I've got this Centos 5.5 box which I am trying to configure as an OpenVPN server. Now 2.1.4 seems to have added pkcs11 support and that stops me from creating the CA and other necessary files: [root@gw5fl 2.0]# . ./vars bash: /usr/share/doc/openvpn-2.1.4/easy-rsa/2.0/whichopensslcnf: Permission denied NOTE: If you run ./clean-all, I will be doing a rm -rf on /usr/share/doc/openvpn-2.1.4/easy-rsa/2.0/keys [root@gw5fl 2.0]# ./clean-all [root@gw5fl 2.0]# ./build-ca Please edit the vars script to reflect your configuration, then source it with "source ./vars". Next, to start with a fresh PKI configuration and to delete any previous certificates and keys, run "./clean-all". Finally, you can run this tool (pkitool) to build certificates/keys. [root@gw5fl 2.0]# Now, the tool I seem to need (from the "vars" file): export PKCS11TOOL="pkcs11-tool" does not seem to be there and I am not sure how to install it as I couldn't find it. So, any perspective on what this mess is all about and how to get out of it would be much appreciated. Thanks. Boris.

5 12

xfs_quota - space differs between du -h vs report -h
by aurfalien＠gmail.com 20 Jan '11

20 Jan '11

Hi all, I'm having fun getting to know xfs_quotas. I do notice some irregularities. When running xfs_quota -s -c /dev/sdc1 And then running report -h, for user barney, his used space is 4.9G while his soft/hard limit is 5G. Since I set 5, all is well, but when I run du -hs on barnies dir, it shows only 4G used. I can adjust for the diff so that my quotas can be set to 6G when I really mean 5G, that is if its a linear diff vs a algo diff. However I was hoping you all could shed some light on this. - aurf

1 0

Re: [CentOS] How to disable screen locking system-wide?
by Mike McCarty 20 Jan '11

20 Jan '11

Sorin Srbu wrote: >> -----Original Message----- >> From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On >> Behalf Of Tom H >> Sent: Thursday, January 20, 2011 1:03 PM >> To: CentOS mailing list >> Subject: Re: [CentOS] How to disable screen locking system-wide? >> >> >> In our environment, leaving your desk without locking your >> computer/screen is punished with a disciplinary hearing and three such >> hearings result in dismissal. Having one person using another's >> account is considered a security risk. > > Sounds kinda' harsh. May I ask what industry this is in? Sounds pretty normal to me. I've worked for a variety of companies over a period of over twenty years, and similar policies were in effect in each one. At one company where I worked, possesion of another person's password was immediate dismissal grounds, though not automatic. Any company which doesn't exercise "due diligence" to protect its trade secrets will lose when trying to recover from an industrial espionage incident. I know from personal experience, since I was at a company which went after another for theft of IP, and nearly wound up having to testify in court. A friend of mine did have to. All employees were required to attend a seminar presented by the full time legal staff, explaining what IP is, and how it is protected. One thing we were told very forcefully was that we were to have good passwords (and what that meant), and that we were never to divulge our passwords to anyone else. IANAL, but I suggest that anyone who has any intellectual property (patents, trade secrets, trade marks) get a lawyer to explain what they are, what the differences are, and how to protect them. They need different kinds of protection, and trade secrets, especially, are hard to protect without good, secret passwords. Mike -- p="p=%c%s%c;main(){printf(p,34,p,34);}";main(){printf(p,34,p,34);} Oppose globalization and One World Governments like the UN. This message made from 100% recycled bits. You have found the bank of Larn. I speak only for myself, and I am unanimous in that!

1 1

dmesg and messages differences
by Keith Roberts 20 Jan '11

20 Jan '11

Hi everyone. I just wondered what's the difference between /var/log/dmesg, and /var/log/messages? Why do we have 2 log files that are similar? Kind Regards, Keith Roberts ----------------------------------------------------------------- Websites: http://www.karsites.net http://www.php-debuggers.net http://www.raised-from-the-dead.org.uk All email addresses are challenge-response protected with TMDA [http://tmda.net] -----------------------------------------------------------------

6 6

Re: [CentOS] How to disable screen locking system-wide?
by Tom H 20 Jan '11

20 Jan '11

On Thu, Jan 20, 2011 at 7:55 AM, 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 Tom H >>Sent: Thursday, January 20, 2011 1:03 PM >>To: CentOS mailing list >>Subject: Re: [CentOS] How to disable screen locking system-wide? >> >> >>In our environment, leaving your desk without locking your >>computer/screen is punished with a disciplinary hearing and three such >>hearings result in dismissal. Having one person using another's >>account is considered a security risk. > > Sounds kinda' harsh. May I ask what industry this is in? Finance. >>I don't know the exact path but you can use gconftool-2 (or >>gconf-editor as a GUI) to set the screensaver not to lock (and mimick >>doing so by changing the screensaver preferences in >>"System-Preferences-Screensaver"). > > That's a per-user setting you describe, right? Yes but someone's posted a global gconftool-2 recipe.

2 2

Re: [CentOS] How to disable screen locking system-wide?
by m.roth＠5-cent.us 20 Jan '11

20 Jan '11

Rudi Ahlers wrote: > On Thu, Jan 20, 2011 at 3:47 PM, Jerry Franz <jfranz(a)freerun.com> wrote: >> On 01/20/2011 02:55 AM, Rudi Ahlers wrote: >>> <snip>> >> If you don't have full administrative access to the machine >> *independent* of people's day-to-day login accounts you are doing it >> wrong and need to hire a competent IT admin - because your current one >> doesn't know what heck they are doing. > > Benjamin, I'm sorry to say this, but you're wrong! > > Sometimes you need to access a PC of a staff member who is busy with > something right now. And I'm not talking about administrative access. > Sure, I can access any PC via root login, and frankly for that matter > I can also reset any user's password via root login. > > The message I'm trying to bring across is that users in the company > shouldn't have passwords which admin doesn't know, or can't access. > The PC's and data, well at least in our company, is the property of > the company. Making it more difficult for an engineer to gain access > to a user's PC automatically arises suspicion I very strongly disagree with this, and agree with Benjamin. I do *not* want anyone else knowing my password, and whenever I have to be there when someone's entering a new one, I perform the Traditional Sysadmin Admiration of the Ceiling while they do it. I can't see any reason to have to know someone's password. If I need to be them, then going in as root, and su - <username> will do it. mark

1 0

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