Why is Trellis so unpredictable? Failed to connect to the host via ssh: Permission denied (publickey)

[MWDelaney]

See my reply here:

Trouble Setting Up SSH Forwarding, I think

Trellis regenerates the server’s key after initial provisioning. Remove the server’s entry from ~/.ssh/known_hosts and deploy again.

You’ll need to delete the known_hosts entry each time you reprovision the server.