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Last active November 19, 2023 16:29
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Systemd service for autossh
Description=Keeps a tunnel to '' open
# -p [PORT]
# -l [user]
# -M 0 --> no monitoring
# -N Just open the connection and do nothing (not interactive)
ExecStart=/usr/bin/autossh -M 0 -N -q -o "ServerAliveInterval 60" -o "ServerAliveCountMax 3" -p 22 -l autossh -L 7474: -i /home/autossh/.ssh/id_rsa
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MestreLion commented Jun 16, 2023

@jotakar :

What I see is that service stop autossh every few minutes, why? where is the error?

Don't use -f when using autossh as a systemd simple service. It will fork autossh (put in the background) and confuse systemd into thinking it ended.


Of course you do, without it autossh will give up if the very first connection attempt fails.

Systemd's Restart=always and RestartSec=60 can take care of that. You usually want autossh to fail fast if it can't do the first connection, as it usually means misconfiguration or authentication issues, and giving up after first attempt helps highlighting that on the journalctl logs.

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stokito commented Jul 4, 2023

JFYI: I created an SSH tunnel SystemD service that works without the autossh

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