galera/server/clustercheck.yml

parameters:
  _param:
    galera_clustercheck_password: clustercheck
  galera:
    clustercheck:
      enabled: True
      user: clustercheck
      password: ${_param:galera_clustercheck_password}
      port: 9200
      available_when_donor: 0
      available_when_readonly: 0
  mysql:
    server:
      users:
      - name: clustercheck
        password: ${_param:galera_clustercheck_password}
        database: '*.*'
        grants: PROCESS