You can't do 2 control nodes with kolla as you need an odd number of mariadb nodes for quorum purposes (1 or 3 or more). ________________________________ From: kaqiu pi <thremes172@gmail.com> Sent: 16 March 2023 17:05 To: openstack-discuss@lists.openstack.org <openstack-discuss@lists.openstack.org> Subject: Fwd: [kolla-ansible] Whether the cluster of two control nodes is available CAUTION: This email originates from outside THG ________________________________ Hi， I'm a newer in kolla-ansibe. And I could deploy a cluster of two controll nodes by kolla-ansible. But I don't konw whether the cluster is anvailable? I would like to ask, when the number of control nodes is 2, the status of mariadb and rabbitmq clusters, are they safe and available for production? Thanks for any guidance. Good Luck Danny Webb Principal OpenStack Engineer Danny.Webb@thehutgroup.com [THG Ingenuity Logo]<https://www.thg.com> [https://i.imgur.com/wbpVRW6.png]<https://www.linkedin.com/company/thgplc/?originalSubdomain=uk> [https://i.imgur.com/c3040tr.png] <https://twitter.com/thgplc?lang=en>