PowerEdge：ノードが既存のLinuxクラスターに参加できない

node01:~ # crm status
Cluster Summary:
  * Stack: corosync
  * Current DC: node01 (version 2.1.2+20211124.ada5c3b36-150400.4.14.9-2.1.2+20211124.ada5c3b36) - partition with quorum
  * Last updated: Thu Oct 26 13:44:44 2023
  * Last change:  Thu Oct 26 13:27:44 2023 by root via crm_node on node01
  * 1 node configured
  * 0 resource instances configured

Node List:
  * Online: [ node01 ]

Full List of Resources:
  * No resources

node02:~ # crm cluster join
INFO: Join This Node to Cluster:
  You will be asked for the IP address of an existing node, from which
  configuration will be copied.  If you have not already configured
  passwordless ssh between nodes, you will be prompted for the root
  password of the existing node.

IP address or hostname of existing node (e.g.: 192.168.1.1) []node01
INFO: The user 'hacluster' will have the login shell configuration changed to /bin/bash
Continue (y/n)? y
INFO: Generating SSH key for hacluster
INFO: Configuring SSH passwordless with hacluster@node01
INFO: BEGIN Configuring csync2

WARNING: csync2 run failed - some files may not be sync'd
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'

node01:~ # csync2 -x
Peer did provide a wrong SSL X509 cetrificate.

node01:~ # csync2-rm-ssl-cert node2
Certificate for 'node2' not in local database.

SSL X509証明書が正しくありません

次のコマンドを使用して、古いエントリーを削除します:(メモ: SLES12の場合、VERSION=3)

# echo "DELETE FROM x509_cert WHERE peername='HOST2';" |sqlite${VERSION} /var/lib/csync2/$(echo $HOSTNAME | tr [:upper:] [:lower:]).db${VERSION}

この例では、次のようになります。

node01: # echo "DELETE FROM x509_cert WHERE peername='node02';" |sqlite3 /var/lib/csync2/$(echo $HOSTNAME | tr [:upper:] [:lower:]).db3

node02からクラスターに再度参加すると成功します。

node02:~ # crm cluster join
INFO: Join This Node to Cluster:
  You will be asked for the IP address of an existing node, from which
  configuration will be copied.  If you have not already configured
  passwordless ssh between nodes, you will be prompted for the root
  password of the existing node.

IP address or hostname of existing node (e.g.: 192.168.1.1) []node01
INFO: BEGIN Configuring csync2
INFO: END Configuring csync2
INFO: Merging known_hosts
INFO: BEGIN Probing for new partitions
INFO: END Probing for new partitions
Address for ring0 [192.168.XXX.XXX]192.168.XXX.XXX
INFO: Hawk cluster interface is now running. To see cluster status, open:
INFO:   https://192.168.XXX.XXX:7630/
INFO: Log in with username 'hacluster', password 'XXXXX'
WARNING: You should change the hacluster password to something more secure!
INFO: BEGIN Waiting for cluster
..                                                                      
INFO: END Waiting for cluster
INFO: BEGIN Reloading cluster configuration
INFO: END Reloading cluster configuration
INFO: Done (log saved to /var/log/crmsh/crmsh.log)

クラスターのステータスを確認します。

node02:~ # crm status
Cluster Summary:
  * Stack: corosync
  * Current DC: node01 (version 2.1.2+20211124.ada5c3b36-150400.4.14.9-2.1.2+20211124.ada5c3b36) - partition with quorum
  * Last updated: Thu Oct 26 14:10:32 2023
  * Last change:  Thu Oct 26 14:05:22 2023 by hacluster via crmd on node01
  * 2 nodes configured
  * 0 resource instances configured

Node List:
  * Online: [ node01 node02 ]

Full List of Resources:
  * No resources