Good ways to restart all the computers in a remote cluster?

Posted by vgm64 on Super User See other posts from Super User or by vgm64
Published on 2010-03-23T19:18:20Z Indexed on 2010/03/23 19:23 UTC
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Filed under:

reboot

|

unix

|

cluster

I have a cluster that I manage and from time to time I get emails from each node (and head node) begging to be restarted after an automatic upgrade.

Currently, my best solution so far is a shell script like:

 $> cat cluster_reboot.sh
 ssh [email protected] reboot
 ssh [email protected] reboot
 ssh [email protected] reboot
 ssh [email protected] reboot
 ssh [email protected] reboot
 ssh [email protected] reboot

I end up just typing the root password six times, but it works, I guess. Is there a better way? Can I force the head node to reboot the computers for me?

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