Pod 'calico-typha' Not Running on Master Node

Problem

In a test cluster with less than 3 schedulable nodes, calico-typha is not running.

Environment

• Platform9 Managed Kubernetes (PMK)
• Cluster with less than 3 schedulable nodes
• Calico Typha

Resolution

Scenario #1:

The replicas are hard-coded to 3 in PMK repo to support a large cluster. For a cluster less than 3 nodes , we can reduce the number of replicas to 1:

~# kubectl scale deploy [Deployment-Name] --replicas=1

Scenario #2:

For a cluster with 3 nodes where a single master is marked unschedulable, remove the taint on master node using below command:

~# kubectl taint node [Master-IP] node-role.kubernetes.io/master:NoSchedule-

Note: Removing taint on master will allow the scheduler to schedule new pods on master.

Additional Information

There is a known issue and our development team is working on the fix. We will keep this article up-to-date when this feature is implemented.