S VERSION OWNER GROUP NAME IP PORT COMMENTį 1. We have a ClusterControl cluster that consists of three nodes: :~# s9s controller -list -long Initial situationįirst, let’s take a look at how the initial situation looks like. Let’s go through some scenarios that may happen.

In this blog post we would like to focus on how the ClusterControl cluster behaves in a situation where one of the nodes becomes unavailable.

We have two blog posts in which we have explained how to setup Cmon HA, using Galera Cluster as a backend database across the ClusterControl nodes and how to configure HAProxy as a loadbalancer to point to an active ClusterControl node. On the other hand, how can we ensure that ClusterControl itself will be highly available and be able to manage the database nodes? ClusterControl may be deployed in a couple of different ways, one of them is to form a cluster of ClusterControl nodes and then ensure that there is always a node that will be able to deal with the cluster management. High availability is a must these days and ClusterControl performs a key role in ensuring that your database clusters will stay up and running.

Z info 974