comming soon
- https://www.digitalocean.com/community/tutorials/how-to-configure-a-galera-cluster-with-mariadb-on-centos-7-servers
- https://mariadb.com/kb/en/getting-started-with-mariadb-galera-cluster/
- https://github.com/edf-hpc/mariadb-galera/blob/master/support-files/wsrep_notify.sh
- https://github.com/SotolitoLabs/sotolitoOS-setup/blob/master/ansible/playbooks/mariadb_ha_setup.yaml