Control Plane High Availability

Control Plane High Availability

The following pre-requisites are required in order to configure an HA control plane:

Requirements

Load Balancer

A load balancer with a single external address should be configured as the IP gateway for the controllers. The load balancer should allow traffic to each controller on the following ports:

• 6443
• 8132
• 8133
• 9443

Cluster configuration

On each controller node, a k0s.yaml configuration file should be configured. The following options need to match on each node, otherwise the control plane components will end up in very unknown states:

• network
• storage: Needless to say, one cannot create a clustered control plane with each node only storing data locally on SQLite.
• externalAddress

Full configuration file refrence