Check whether a connection exists to a remote host using paramiko

Question

I m using single object of paramiko.SSHClient() for executing a command on a remote machine.

so i m using ssh.exec_command(cmd)

But if the connection to remote host is lost, ssh.exec_command hangs up.

Is there a way to check for connection existence before ssh.exec_command()????

Answer 1

If you have a long running SSH connection, you may want to use the Keep Alive parameter via Transport.set_keepalive.

Answer 2

As an alternate possibility, maybe execnet would work. It wraps the command line ssh command instead, so it's definitely not the paramiko approach... just a though.