How do admins handle a situation with many boxes like 50 for example. If I wish to tell 50 boxes to run a handful of commands - how is that done? (I mean without actually logging into 1,2,3,4...X and executing the commands)
Thanks,
Jerry
Jerry Geis wrote:
How do admins handle a situation with many boxes like 50 for example. If I wish to tell 50 boxes to run a handful of commands - how is that done? (I mean without actually logging into 1,2,3,4...X and executing the commands)
Thanks,
Jerry _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Depending on situation, either by using a config management system like puppet or cfengine, or by using a tool like dssh or clusterssh. -Alan
Am Dienstag, den 04.08.2009, 21:35 +0200 schrieb Alan Sparks:
Jerry Geis wrote:
How do admins handle a situation with many boxes like 50 for example. If I wish to tell 50 boxes to run a handful of commands - how is that done? (I mean without actually logging into 1,2,3,4...X and executing the commands)
Thanks,
Jerry _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
Depending on situation, either by using a config management system like puppet or cfengine, or by using a tool like dssh or clusterssh. -Alan
Same here (cfengine, clusterssh). I also like mussh
Chris
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On Aug 4, 2009, at 3:32 PM, Jerry Geis wrote:
How do admins handle a situation with many boxes like 50 for example. If I wish to tell 50 boxes to run a handful of commands - how is that done?
one such tool, and links to many others, are here:
-steve
-- If this were played upon a stage now, I could condemn it as an improbable fiction. - Fabian, Twelfth Night, III,v http://five.sentenc.es
Jerry Geis wrote:
How do admins handle a situation with many boxes like 50 for example. If I wish to tell 50 boxes to run a handful of commands - how is that done? (I mean without actually logging into 1,2,3,4...X and executing the commands)
Depends what the commands have to do. For most of my management I use cfengine which runs hourly and can run things on classes of boxes.
If I want to run something *right now* I use a simple script and ssh keys, and ssh-agent to automatically login to however many boxes I want and run the command.
e.g. assuming the boxes have various names, create a text file that has all of their names and a simple 1-liner to iterate through the file and login to the systems, if they are all named similarly you can use something like seq to help
e.g.
for i in `seq -w 1 50`; do ssh username@myserver${i} "my command";done
There are also tools like clusterssh which can run the commands in parallel. Never used them myself.
nate
Jerry Geis schrieb:
How do admins handle a situation with many boxes like 50 for example. If I wish to tell 50 boxes to run a handful of commands - how is that done? (I mean without actually logging into 1,2,3,4...X and executing the commands)
Just found phpAdamoto[1] on freshmeat and will test it the next days. Right now, it is a mixture of clusterssh and self-written scripts.
[1] http://www.phpadamoto.org/Server/doc.php
Regards,
Peter
--- On Tue, 8/4/09, Jerry Geis geisj@pagestation.com wrote:
How do admins handle a situation with many boxes like 50 for example. If I wish to tell 50 boxes to run a handful of commands - how is that done? (I mean without actually logging into 1,2,3,4...X and executing the commands)
You could use a cluster shell like C3 or pdsh for this. Both are open source projects. With C3, for instance, you can define your nodes as part of a cluster and then simply run shell commands against the entire cluster or, if wanted, against a sub set of nodes.
On Tue, Aug 4, 2009 at 3:32 PM, Jerry Geisgeisj@pagestation.com wrote:
How do admins handle a situation with many boxes like 50 for example. If I wish to tell 50 boxes to run a handful of commands - how is that done? (I mean without actually logging into 1,2,3,4...X and executing the commands)
We use a combination of puppet and dsh:
http://reductivelabs.com/products/puppet/
http://www.garbled.net/clusterit.html
Puppet ensures configs are in sync, and dsh allows us to run 1 off commands across all our hosts in parallel.
- Ryan -- http://prefetch.net
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