my-rook-config/cluster/examples/kubernetes/cassandra/operator.yaml

# Namespace where Cassandra Operator will live
apiVersion: v1
kind: Namespace
metadata:
  name: rook-cassandra-system

---

# Cassandra Cluster CRD
apiVersion: apiextensions.k8s.io/v1beta1
kind: CustomResourceDefinition
metadata:
  name: clusters.cassandra.rook.io
spec:
  group: cassandra.rook.io
  names:
    kind: Cluster
    listKind: ClusterList
    plural: clusters
    singular: cluster
  scope: Namespaced
  version: v1alpha1
  validation:
    openAPIV3Schema:
      properties:
        spec:
          type: object
          properties:
            version:
              type: string
              description: "Version of Cassandra"
            datacenter:
              type: object
              properties:
                name:
                  type: string
                  description: "Datacenter Name"
                racks:
                  type: array
                  properties:
                    name:
                      type: string
                    members:
                      type: integer
                    configMapName:
                      type: string
                    jmxExporterConfigMapName:
                      type: string
                    storage:
                      type: object
                      properties:
                        volumeClaimTemplates:
                          type: object
                          # TODO: Check if we can ref the already existing schema
                      required:
                       - "volumeClaimTemplates"
                    placement:
                      type: object
                    resources:
                      type: object
                      properties:
                        # TODO: Check if we can ref the already existing schema
                        cassandra:
                          type: object
                        sidecar:
                          type: object
                      required:
                        - "cassandra"
                        - "sidecar"
                    sidecarImage:
                      type: object
                  required:
                    - "name"
                    - "members"
                    - "storage"
                    - "resources"
              required:
                - "name"
          required:
            - "version"
            - "datacenter"

---

# ClusterRole for cassandra-operator.
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
  name: rook-cassandra-operator
rules:
  - apiGroups:
      - ""
    resources:
      - pods
    verbs:
      - get
      - list
      - watch
      - delete
  - apiGroups:
      - ""
    resources:
      - services
    verbs:
      - "*"
  - apiGroups:
      - ""
    resources:
      - persistentvolumes
      - persistentvolumeclaims
    verbs:
      - get
      - delete
  - apiGroups:
      - ""
    resources:
      - nodes
    verbs:
      - get
  - apiGroups:
      - apps
    resources:
      - statefulsets
    verbs:
      - "*"
  - apiGroups:
      - policy
    resources:
      - poddisruptionbudgets
    verbs:
      - create
  - apiGroups:
      - cassandra.rook.io
    resources:
      - "*"
    verbs:
      - "*"
  - apiGroups:
      - ""
    resources:
      - events
    verbs:
      - create
      - update
      - patch
---
# ServiceAccount for cassandra-operator. Serves as its authorization identity.
apiVersion: v1
kind: ServiceAccount
metadata:
  name: rook-cassandra-operator
  namespace: rook-cassandra-system
---
# Bind cassandra-operator ServiceAccount with ClusterRole.
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
  name: rook-cassandra-operator
roleRef:
  apiGroup: rbac.authorization.k8s.io
  kind: ClusterRole
  name: rook-cassandra-operator
subjects:
- kind: ServiceAccount
  name: rook-cassandra-operator
  namespace: rook-cassandra-system
---
# cassandra-operator StatefulSet.
 apiVersion: apps/v1
 kind: StatefulSet
 metadata:
   name: rook-cassandra-operator
   namespace: rook-cassandra-system
   labels:
     app: rook-cassandra-operator
 spec:
   replicas: 1
   serviceName: "non-existent-service"
   selector:
     matchLabels:
       app: rook-cassandra-operator
   template:
     metadata:
       labels:
         app: rook-cassandra-operator
     spec:
       serviceAccountName: rook-cassandra-operator
       containers:
       - name: rook-cassandra-operator
         image: rook/cassandra:master
         imagePullPolicy: "Always"
         args: ["cassandra", "operator"]
         env:
         - name: POD_NAME
           valueFrom:
             fieldRef:
               fieldPath: metadata.name
         - name: POD_NAMESPACE
           valueFrom:
             fieldRef:
               fieldPath: metadata.namespace