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Example: Connecting to remote postgresql
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(1) On both the local & remote hosts:
adduser -s /bin/false autossh <with blank passwords>
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(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 ''
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(3) If using runit for service supervision < /etc/sv/autossh/run >:
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#!/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'
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ln -s /etc/sv/autossh /etc/service/autossh
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** if running autossh in a script without using runit add -f to ssh options **|
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(4) Connect with:
psql -h 127.0.0.1 -p 1234 -U username -d database
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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
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