rhtyd commented on issue #3458: Cannot create zone. "Fail to create a physical network" error with VMWare 6.5 hypervisor URL: https://github.com/apache/cloudstack/issues/3458#issuecomment-508490674 @AndreaGHG ah-ha! this explains why you got the database issues. CloudStack implements its locking mechanism using MySQL provided GET_LOCK which is unsupported by MariaDB/Galera (see https://mariadb.com/kb/en/library/mariadb-galera-cluster-known-limitations/). However, you may try to configure haproxy to use an active-backup setup than active-active (or round-robin) configuration. I've tested and aware that MySQL 5.5, 5.6, 5.7 works well with CloudStack, and I've not tested or setup myself but a clustering solution works with CloudStack as long as CloudStack works with a single DB instance at a time (instead of active-active or round-robin, see https://severalnines.com/blog/how-deploy-high-availability-cloudstackcloudplatform-mariadb-galera-cluster). For docs, please refer: http://docs.cloudstack.apache.org/en/latest/installguide/management-server/index.html#install-the-database-server
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