TCB13 , 9 months ago

SSH config is versatile, what I do is keep a simple .ssh/config file like this in every machine that isn’t synced:

<span style="color:#323232;">Host *
</span><span style="color:#323232;">  IdentitiesOnly no
</span><span style="color:#323232;">  AddKeysToAgent yes
</span><span style="color:#323232;">  IdentityFile "machinexyz-key-file"
</span><span style="color:#323232;">
</span><span style="color:#323232;">Include "~/Preferences/ssh/config"
</span>

This file will simply configure it to use the IdentityFile of this machine and import another file that has the actual host definitions at ~/Preferences/ssh/config - that is the one I sync with Syncthing. This gives a nice way to customize settings for each machine (key path and whatnot) while keeping a global file with in sync between all of them.

For reference here is ~/Preferences/ssh/config:

<span style="color:#323232;">Host *
</span><span style="color:#323232;">  IdentitiesOnly no
</span><span style="color:#323232;">  AddKeysToAgent yes
</span><span style="color:#323232;">
</span><span style="color:#323232;">host server1
</span><span style="color:#323232;">  hostname x.x.x.x
</span><span style="color:#323232;">  user xxxxx
</span><span style="color:#323232;">  port 1111
</span><span style="color:#323232;">
</span><span style="color:#323232;">host server2
</span><span style="color:#323232;">  hostname x.x.x.x
</span><span style="color:#323232;">  user xxxxx
</span><span style="color:#323232;">  port 2222
</span>