I have a pretty hefty script that does some SSHing to different boxes. It's a pain in the butt if it gets so far and fails to connect to the last box. Is there a way of timing out on an ssh if it fails to connect and retrying?
pseudo code:
ssh $user@$server "dosomething; dosomethingelse"
if [ 20 seconds passed and not connected]
drop connection
retry ssh
fi
My last script got stuck and I was pretty disappointed. Maybe some kind of loop would help.
Thanks in advance
This isn't a complete answer but you can make ssh timeout by using:
ssh -o ConnectTimeout=5 <user>@<host>...
In this case the timeout would be 5 seconds but you can set that to whatever. What I don't know is what the result of the ssh is if it times out. Maybe if you have a box you know will timeout you can check it. Echo the exit code after it runs:
echo $?
If it times out and the exit code is anything other than 0 you can trigger off that and retry. If it times out and the exit code is 1 this may not work because if the ssh fails for other reasons you might get into a loop. Maybe you could set it up to retry a certain number of times and then fail.
Anyway, hope this helps.