Why master node is not selected as OSD candidate?

[ccokee]

Hi, I have a raspberry pi cluster running k8s with rook. All the raspberrys have the same elements and specs. But surprisingly, only workers/nodes are selected as OSD candidate. Does anyone know why is this happening?

[travisn]

@ccokee To run on the master nodes, you need to add tolerations such as the following to the CephCluster CR:

  placement:
    all:
      tolerations:
      - key: node-role.kubernetes.io/master
        operator: Exists
        effect: NoSchedule