I'm setting up some background SSH tunnel for some backup procedures. However I'm worried the ssh process just sitting around. At the end of my script I kill the PID, but what if something happens to my script and it doesn't finish. I want something that's a bit more robust.
Is there anyway to get the SSH tunnel to kill itself after X seconds / minutes?
At the moment I'm starting it like this
ssh -f -N -L 14880:internalserver:3306 gateway.example.com
And then using lsof to get the PID that's opened that port.