crm cluster join fails. ERROR: No such file or directory: '/etc/corosync/corosync.conf'

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Environment

SUSE Linux Enterprise Server 15

Situation

Cluster is up on node1. On joining node2 to the cluster it fails:

node2:~ # crm cluster join -c node1
INFO: BEGIN Configuring csync2
INFO: END Configuring csync2
INFO: Merging known_hosts
INFO: BEGIN Probing for new partitions
INFO: END Probing for new partitions
ERROR: cluster.join: [Errno 2] No such file or directory: '/etc/corosync/corosync.conf'

Resolution

Ensure Network Interface Card (NIC) names are identical on all nodes.

Cause

In this scenario, node1 has network interface eth0, but doesn't have eth1, while node2 has network interface eth1, but doesn't have eth0.

When the node2 NIC name doesn't exist on node1, the crm script fails to setup csync2 on node1. As the result of that, /etc/corosync/corosync.conf is not copied from node1 to node2.

Status

Reported to Engineering

Additional Information

Reference:
https://documentation.suse.com/sle-ha/15-SP4/single-html/SLE-HA-administration/#sec-ha-requirements-other

Disclaimer

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