First, if you ever have set up a shh key for connecting to remote server, you need to be aware that password-less shh key only works when your home directory on the server is not 777 (writable by others).
see this stackexchange post .
Second, I was following https://www.cyberciti.biz/faq/how-to-mount-remote-directory-filesystems-with-sshfs-on-linux/ to set up sshfs on my ubuntu machine. I put down a gist below.
