sshfs is failing with "remote host has disconnected"
You get a lot more information about the failure if you run sshfs as:
sshfs -odebug,sshfs_debug,loglevel=debug user@host ...
Usually this will give you something a lot more helpful to debug the problem.
It was requiring tty (this basically means something cannot be run in the background, but needs an active terminal window to run). So I added the following to /etc/sudoers
(edited by doing visudo
):
Defaults:basicuser !requiretty
I want it to not require tty only for that one command, but it may not be possible to do that: https://unix.stackexchange.com/a/80159