Question

I need to create a script which will connect 4 different servers one by one, and check if the server is running then execute a command and exit. If first server is not running then connect to second and exit.

I am thinking about connecting through SSH script using key based authentication.

Please help.

Answer 1

What about

hosts="host1 host2 host3"

for h in $hosts; do
    ssh -o BatchMode=yes -o ConnectTimeout=7 $h command
    [ $? -eq 0 ] && break
done