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Control Plane High Availability

Control Plane High Availability#

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


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