Learn more about HPC Architecture here.

Generally, only the master node is connect to the internet, and the compute nodes are inter-connected with master node via a switch.

Steps:

1. SSH into your master node.

2. Create new keys using ssh-keygen. No passphrase would be better for ease of access, but worse security.

3. Find the ip addresses of your (any) compute node from the /etc/hosts/ file from masternode. We don’t need to copy our ssh key to other nodes, as that happens itself.

4. Copy the public keys to compute nodes using ssh-copy-id $USER@10.10.10.101. Where 10.10.10.101 is the ip of your compute node.

5. Now you will be prompted to enter password for $USER, after that you can schedule your jobs using pbs.