If a cluster communication issue is suspected, here are some initial checks that can be undertaken:
- Verify that the ceph.conf file has the IP address values set for cluster_network and public_network.
- Verify that the networking interface on the nodes is up. You can use a Linux utility, such as ifconfig or ip address, to view the state of the configured networking interfaces:
- Validate that all Ceph nodes are able to communicate via short hostnames. You can validate that the /etc/hosts file on each node is properly updated.
- Validate that the proper firewall ports are open for each component in the Ceph cluster. You can ...