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Example: Connecting to remote postgresql
========================================

(1) On both the local & remote hosts:

adduser -s /bin/false autossh   <with blank passwords>
-------------------------------------------------------------------

(2) On the local client create an SSH key with an empty password:

su -s /bin/sh autossh
echo 'y' |ssh-keygen -t ed25519 -N ''
-------------------------------------------------------------------

(3) If using runit for service supervision < /etc/sv/autossh/run >:

-------------------------------------------------------------------
#!/bin/sh
sleep 2
exec 2>&1
su -s /bin/sh autossh -c \
'export AUTOSSH_GATETIME=0 && nohup autossh -M 0 -o "ServerAliveInterval 60" -o "ServerAliveCountMax 3" -L 1234:localhost:1234 -N -l autossh remote.ip.addr'
------------------------------------------------------------------------------------------------------------------------------------------------------------
ln -s /etc/sv/autossh /etc/service/autossh
-------------------------------------------------------------------------------
** if running autossh in a script without using runit add -f to ssh options **|
-------------------------------------------------------------------------------

(4) Connect with:

psql -h 127.0.0.1 -p 1234 -U username -d database
-------------------------------------------------------------------------------
openssh-server: works out of the box			| ed25519 keys possible
dropbear:	echo "/bin/false" >> /etc/shells	| ecdsa keys possible
tinyssh:	port forwarding not yet implemented     | ed25519 keys possible