oleg156-server: Warning: Permanently added 'oleg156-server' (ECDSA) to the list of known hosts.

pdsh@oleg156-client: oleg156-server: ssh exited with exit code 2
pdsh@oleg156-client: oleg156-server: ssh exited with exit code 2
pdsh@oleg156-client: oleg156-server: ssh exited with exit code 2