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34753 discussions

Moving hard drives
by Slack-Moehrle 02 Mar '10

02 Mar '10

Hi All, I have a server that is running nicely, except I have hit the maximum RAM (4gb) and I wish to add more. It is an ASUS board, AMD X64 dual core, nvidia nic. What I want going to move to is a dell board, Intel Pentium M dual code, which supports 8gb of RAM. Can I just unplug the HD and move it to the new server and boot it up? I assume that the NIC will need to be re-setup, but what other issues would there be? I am not running X at all. Doing apache, zimbra, mysql. Best, -Jason

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Re: [CentOS] Inquery: popular upload tools for customer codes in use
by Robinson Tiemuqinke 01 Mar '10

01 Mar '10

On Monday, March 01, 2010 1:14 PMLes Mikesell Wrote >> Hi all, >> I've had a project to upload customer codes and some data to members >> inside a webfarm, the upload work will be done almost daily for quite >> a while. Customer needs the upload status be confirmed everytime and >> data will be verified later easily when in need. >> Is there one or more popular tools available for this purposes? open >> source is preferred, but commercial ones are fine too as long as price >Rsync over ssh is about as good as it gets for remotely updating files. > If they can assemble a tree that matches the directory structure, 'rsync -av' will show a list of files that are different (and thus >updated) and you can repeat it if you want - no output means the remote side is identical. Rsync over ssh doesn’t works but a little cumbersome – customer’s servers’ data center are far away from development site and link between is slow. So better one to data center’s one and from the latter to all others in data center. This will work better but still could be improved. Since customer has some scripts to be reloaded after codes/data are synced. >You'd probably really want to wrap this with a version control system like subversion to get history, logging, rollback capability, etc. so Is there already an existing solution like this available, open source and commercial? Thanks. --Robinson

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UnRAID
by Slack-Moehrle 01 Mar '10

01 Mar '10

has anyone heard of UnRaid at: http://lime-technology.com/ Seems interesting, runs from USB. What I like is that you can add drives to your array without having to destroy it. And it lets you add any size drive that you want. You can mix, say 1tb and 2tb drives. What other ways can I do this without UnRAID? Its limitation is that you cant do anything else and I would want to run other things like apache, mysql, etc. -Jason

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Inquery: popular upload tools for customer codes in use
by Robinson Tiemuqinke 01 Mar '10

01 Mar '10

Hi all, I've had a project to upload customer codes and some data to members inside a webfarm, the upload work will be done almost daily for quite a while. Customer needs the upload status be confirmed everytime and data will be verified later easily when in need. Is there one or more popular tools available for this purposes? open source is preferred, but commercial ones are fine too as long as price is aceeptable. Thanks. --Robinson

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multi-core performance
by Pete Kay 01 Mar '10

01 Mar '10

Hi, Does anyone know how to turn on TOE ( TCP offload engine ) and RSS ( Receive-Side Scaling)? Thanks, pete

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issues with 3rd party repos for centos
by Robert P. J. Day 01 Mar '10

01 Mar '10

i'm reading the lowdown on 3rd party repos with respect to centos here: http://wiki.centos.org/AdditionalResources/Repositories and i have a couple questions and observations. first, the entry for centosplus reads: "Popular packages from this repository include: postfix with database support, a rebuilt kernel with additional drivers & filesystem support, php5 and mysql5." however, i popped over to the centosplus packages site: http://mirror.centos.org/centos-5/5.4/centosplus/ and checked under x86_64, but i don't see any php or mysql packages. am i misreading something? next, regarding remi collet's repo: "Has been recommended on the mailing list and forum for mysql 5.1 and php5.2.9." however, if you check over there (say, under x86_64): http://rpms.famillecollet.com/enterprise/5/remi/x86_64/repoview/development… remi appears to already be up to php 5.3.1 (and even 5.3.2 under the "test" link), so the centos wiki page is a bit out of date. finally, all i want is to install PHP 5.3.x (and, obviously, dependent packages) on a stock centos 5.4 system. is remi collet's repo a good choice for that? the centos wiki recommends "extreme caution" for that repo, which makes me nervous. more to the point, are there any serious issues involving bumping up php to 5.3.1 on a stock centos 5.4 system while leaving everything else where it is? rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA Linux Consulting, Training and Kernel Pedantry. Web page: http://crashcourse.ca Twitter: http://twitter.com/rpjday ========================================================================

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another small glitch regarding 3rd party repos -- samba sernet link broken
by Robert P. J. Day 01 Mar '10

01 Mar '10

(sorry, i'm not *trying* to be a pain, i am merely succeeding.) once again, here: http://wiki.centos.org/AdditionalResources/Repositories there's a reference to "The SerNet Samba 3 Repository" -- that link is broken, the directory structure over at http://ftp.sernet.de/pub/samba/ has changed somewhat. also, the current dirs over there go up to samba 3.4 but, as of today, samba 3.5.0 is out: http://news.samba.org/releases/3.5.0/ i'm sure someone else will look into that. :-) rday -- ======================================================================== Robert P. J. Day Waterloo, Ontario, CANADA Linux Consulting, Training and Kernel Pedantry. Web page: http://crashcourse.ca Twitter: http://twitter.com/rpjday ========================================================================

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Slightly OT: check creation of a group
by Niki Kovacs 01 Mar '10

01 Mar '10

Hi, I'm currently writing an install script for an application, and my already limited Bash skills are a bit rusty. I want to check if a group exists, and if it doesn't, then create it. Only thing I found is: if [ grep medintux /etc/group ]; then continue else groupadd medintux fi Apparently I can't seem to "negate" the test, e. g. something like if !(grep medintux /etc/group) Any suggestions for the correct syntax here ? Thanks, Niki

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Python Script Issue
by Joseph L. Casale 01 Mar '10

01 Mar '10

Hey Guys, I am trying to get a python script running but I get the following error: atexit.register(atexit_handler) NameError: global name 'atexit' is not defined A Google search doesn't really help me, except confirm that I don't know anything about python:) Anyone got any ideas? Thanks, jlc

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cron mystery
by Timothy Murphy 01 Mar '10

01 Mar '10

I've just noticed that cron.daily, etc, do not seem to be running on my CentOS-5.4 system. The scripts in /etc/cron.d/ all run fine, but those in /etc/cron.hourly, etc, seem to be ignored. I see that according to /var/log/cron these commands are seen, eg Feb 28 18:01:01 helen crond[6680]: (root) CMD (run-parts /etc/cron.hourly) but none of the scripts in this directory seem to be touched. I've tried running them by hand, and this seems to work fine. Is there some problem, or subtlety, about crond under CentOS? -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

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