coordinating a script to run on only one of identical load-balanced servers

Posted by Amos Shapira on Server Fault See other posts from Server Fault or by Amos Shapira
Published on 2011-11-24T22:49:14Z Indexed on 2011/11/25 2:01 UTC
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centos

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cron

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cluster

I have two identically configured CentOS 5 servers (possibly more in the future). I need to run a cron job on any one of them and that it'll run only on one of them.

I know about RedHat Cluster Suite (we use it on other servers), but it's a too big a gun to use for this task, plus it doesn't really behave well for less than three nodes.

Is there anything light-weight I can use for that?

The servers can communicate with each other directly. I suppose I can develope something over ssh or nrpe (two server which are already installed on these servers), but I was wondering whether there is something already available.

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