autossh
Run, monitor and restart SSH connections.
Auto-reconnects to keep port forwarding tunnels up. Accepts all ssh
flags.
More information: https://www.harding.motd.ca/autossh.
-
Start an SSH session, restarting when a monitoring port fails to return data:
autossh -M {{monitor_port}} "{{ssh_command}}"
-
Forward a local port to a remote one, restarting when necessary:
autossh -M {{monitor_port}} -L {{local_port}}:localhost:{{remote_port}} {{user}}@{{host}}
-
Fork
autossh
into the background before executingssh
and don't open a remote shell:
autossh -f -M {{monitor_port}} -N "{{ssh_command}}"
-
Run in the background, with no monitoring port, and instead send SSH keep-alive packets every 10 seconds to detect failure:
autossh -f -M 0 -N -o "ServerAliveInterval 10" -o "ServerAliveCountMax 3" "{{ssh_command}}"
-
Run in the background, with no monitoring port and no remote shell, exiting if the port forward fails:
autossh -f -M 0 -N -o "ServerAliveInterval 10" -o "ServerAliveCountMax 3" -o ExitOnForwardFailure=yes -L {{local_port}}:localhost:{{remote_port}} {{user}}@{{host}}
-
Run in the background, logging
autossh
debug output andssh
verbose output to files:
AUTOSSH_DEBUG=1 AUTOSSH_LOGFILE={{path/to/autossh_log_file.log}} autossh -f -M {{monitor_port}} -v -E {{path/to/ssh_log_file.log}} {{ssh_command}}
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