Setting up ControlMaster for GreatLakes

ssh_gl_no_password.md

This gist shows how to get rid of authentication when connecting to Greatlakes by ssh.

Set up ~/.ssh/config

Add the following to ~/.ssh/config

Host greatlakes
  HostName greatlakes.arc-ts.umich.edu
  User jimmyzxj
  ControlMaster auto
  ControlPath ~/.ssh/%r@%h:%p

Start up background parent process

Run the following once and authenticate using password and DUO.

ssh -CX -o ServerAliveInterval=30 -fN greatlakes

All later login will be authentication-free.

ssh greatlakes

For example:

(base) jimmy in ~/.ssh λ ssh greatlakes
Last login: Wed Nov 15 15:00:30 2023 from 35.7.36.124
*                      Advanced Research Computing                           *
                         University of Michigan
                         arc-support@umich.edu

                         Welcome to Great Lakes

User documentation: http://arc.umich.edu/greatlakes/user-guide/
The folders under /scratch are intended for data that is in active
use only.  Please do not store data there for longer than 60 days.
For usage information, policies, and updates, please see:
https://arc.umich.edu/document/greatlakes-policies/
------------------------------------------------------------------------

(base) [jimmyzxj@gl-login1 ~]$