tunnelkeeper

TunnelKeeper keeps SSH tunnels open

Install it as a service with tunnelkeeper install.

Create a config file /opt/tunnelkeeper/etc/tunnels.conf. It's an ssh config file, so see man ssh_config for information. TunnelKeeper will connect to each host listed, and make sure every connection in tunnels.conf stays open in the background.

If you make changes to tunnels.conf, run systemctl restart tunnelkeeper.