https://jira.mariadb.org/browse/MDEV-13329?workflowName=MariaDB+v4&stepId=6
[MDEV-13329] node cannot join cluster if being monitored by maxscale - Jira
join cluster
https://knowledge.broadcom.com/external/article/274590/the-slave-pam-node-nonmaster-pam-node-is.html
The slave PAM node (/Non-Master PAM node) is not able to join in the cluster