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w00t
Asked: 2010-05-21 00:39:54 +0800 CST

Same command on multiple servers

  • 772

I'm just wondering if there is any fellow sysadmin with the need to execute one command on multiple servers. If so, what technique are you using?

I have grown tired to ssh-ing to 3-5 servers and executing the same thing over and over again, so I'm thinking to make my life easier.
Also, I think I should create keys so I don't have to enter passwords anymore (though I'm using root). After 2 years of doing this, I kind of developed a laziness.

I googled it up, I know about cssh, pssh, tentakel (this one seems cool), and the more pro-genre - Puppet (of which I just heard of, didn't invest the time to read the docs).

BTW, I'm using XP+putty, so if there is any putty-cool-thingy available, that's welcome too. If not, I can always ssh to one server and from there start my rest-of-the-servers-conquest :) *evil*

Hit me up. Thanks.

ssh command

6 Answers

  1. Best Answer

    Look at:
    clusterssh

    • 8

  2. If you're a Ruby person then Capistrano is worth considering. If you're keen on the idea of Puppet then cfengine and bcfg2 are also worth taking a look at.

    I'm really liking Capistrano for regular tasks, though I'm not sure I'm using it very well and I'd probably benefit from some training. For more one-off tasks I'd recommend clusterssh.

    • 2

  3. Have a look at:

    http://www.millardsoftware.com/puttycs

    It is a wrapper around PuTTy that performs a similar function to Cluster SSH.

    • 2

  4. dssh or pssh may provide you with what you need.

    • 2

  5. If you have ssh keys setup and installed and want something simple:

    #!/bin/bash
SRVLST="server1 server2"

for SRV in $SRVLST
do
    echo Logging into root\@$SRV
    ssh root@$SRV "$1"
done

    However if you really want to controll things properly you should look at a utility such as Puppet

    • 0

  6. If you need just to execute the same commands on a set of servers, then I would suggest clusterssh: I use it routinely and it works very well.

    • 0