Machine Health Checks

CAPL supports auto-remediation of workload cluster Nodes considered to be unhealthy via MachineHealthChecks.

Enabling Machine Health Checks

While it is possible to manually create and apply a MachineHealthCheck resource into the management cluster, using the self-healing flavor is the quickest way to get started:

clusterctl generate cluster $CLUSTER_NAME \
  --kubernetes-version v1.33.4 \
  --infrastructure linode-linode \
  --flavor self-healing \
  | kubectl apply -f -

This flavor deploys a MachineHealthCheck for the workers and another MachineHealthCheck for the control plane of the cluster. It also configures the remediation strategy of the kubeadm control plane to prevent unnecessary load on the infrastructure provider.

Configuring Machine Health Checks

Refer to the Cluster API documentation for further information on configuring and using MachineHealthChecks.