Using Grsync to perform a remote to local backup works OK (grsync 1.2.6/ubuntu 18.04 LTS), just run on the local server ssh-keygen then ssh-copy-id to the remote server and grsync will complete sync not asking for the password.
Using Grsync to perform a remote to local backup works OK (grsync 1.2.6/ubuntu 18.04 LTS), just run on the local server ssh-keygen then ssh-copy-id to the remote server and grsync will complete sync not asking for the password.