Ok I’m not sure about how Rockstor creates local users but you’ll need to log in as root or sudo to root and perform the following steps.
mkdir -p /home/jean/.ssh && chown -R jean /home/jean
echo “[contents of public key]” > /home/jean/.ssh/authorized_keys
In that case confirm that the public key exists in it. If it does confirm that the permissions are as follows with ls -l
-rw------- and that it’s owned by “jean” (should be the 3rd column). If that’s the case then check /var/log/auth.log for errors.