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
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