Configuring Password-Free Login

To ensure the communication between services on different nodes, configure password-free login on all nodes.

1. Generate a public key on each OpenStack and Ceph node.

   ssh-keygen -t rsa

   

   • The options are default settings during the configuration. You can press Enter to confirm the settings one by one.
   • If a key already exists on the node, skip this step for the node.
   Figure 1 Generating a key
   
2. Distribute the keys to each node.

   ssh-copy-id controller
   ssh-copy-id compute01
   ssh-copy-id compute02
   ssh-copy-id ceph-storager

   

   Enter yes and the node password as prompted.

   Figure 2 Distribute the keys.