Remote shutdown of machines

[sktoo]

I have 20 machines running on linux and am finding difficult in shutting down down one by one. can someone help me write a script that will shut them all from one machine? i will be so greateful for your assistance.

[Mudgen]

I have one machine with a PKI trust set up in root's authorized_keys on the others. With a list of server names, one per line, I use a script like:
grep -v "^#" servers.txt|while
read node
do
ssh root@$node "shutdown -h 0"
done

[nickhalliwell]

I have 20 machines running on linux and am finding difficult in shutting down down one by one. can someone help me write a script that will shut them all from one machine? i will be so greateful for your assistance.

I am using Ubuntu and use a program called gshutdown. If you Google gshutdown you will find there site, sorry cant post it here as that is not allowed. Appears to work OK.

[alf55]

Or google for "clustersh".

[Mudgen]

Or google for "clustersh".

I think you meant clusterssh. Pretty much replicates in a gui what I described for command line, but at a host key level of trust, if that satisfies your needs better.