RabbitMQ docker image read-only configMap mount

repro_failing.yaml

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: rabbitmq-config
data:
  enabled_plugins: |
      [rabbitmq_management].
  rabbitmq.conf: |
      loopback_users.guest = false

---
apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
  name: rabbitmq
spec:
  serviceName: na
  replicas: 1
  template:
    metadata:
      labels:
        app: rabbitmq
    spec:
      terminationGracePeriodSeconds: 10
      containers:
      - name: rabbitmq-k8s
        image: rabbitmq:3.8-rc
        volumeMounts:
          - name: config-volume
            mountPath: /etc/rabbitmq
        ports:
          - name: http
            protocol: TCP
            containerPort: 15672
          - name: amqp
            protocol: TCP
            containerPort: 5672
        livenessProbe:
          exec:
            command: ["rabbitmqctl", "status"]
          initialDelaySeconds: 60
          periodSeconds: 60
          timeoutSeconds: 15
        readinessProbe:
          exec:
            command: ["rabbitmqctl", "status"]
          initialDelaySeconds: 20
          periodSeconds: 60
          timeoutSeconds: 10
        imagePullPolicy: Always
        env:
          - name: RABBITMQ_DEFAULT_USER
            value: bunny
      volumes:
        - name: config-volume
          configMap:
            name: rabbitmq-config
            items:
            - key: rabbitmq.conf
              path: rabbitmq.conf
            - key: enabled_plugins
              path: enabled_plugins

repro_workaround.yaml

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: rabbitmq-config
data:
  enabled_plugins: |
      [rabbitmq_management].
  rabbitmq.conf: |
      loopback_users.guest = false

---
apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
  name: rabbitmq
spec:
  serviceName: na
  replicas: 1
  template:
    metadata:
      labels:
        app: rabbitmq
    spec:
      terminationGracePeriodSeconds: 10
      initContainers:
      - name: copy-config
        image: rabbitmq:3.8-rc
        command: [ "sh", "-c", "cp /tmp/rabbitmq/rabbitmq.conf /etc/rabbitmq/rabbitmq.conf" ]
        volumeMounts:
          - name: config-volume
            mountPath: /tmp/rabbitmq
          - name: writeable-volume
            mountPath: /etc/rabbitmq
      containers:
      - name: rabbitmq-k8s
        image: rabbitmq:3.8-rc
        volumeMounts:
          - name: writeable-volume
            mountPath: /etc/rabbitmq
        ports:
          - name: http
            protocol: TCP
            containerPort: 15672
          - name: amqp
            protocol: TCP
            containerPort: 5672
        livenessProbe:
          exec:
            command: ["rabbitmqctl", "status"]
          initialDelaySeconds: 60
          periodSeconds: 60
          timeoutSeconds: 15
        readinessProbe:
          exec:
            command: ["rabbitmqctl", "status"]
          initialDelaySeconds: 20
          periodSeconds: 60
          timeoutSeconds: 10
        imagePullPolicy: Always
        env:
          - name: RABBITMQ_DEFAULT_USER
            value: bunny
      volumes:
        - name: writeable-volume
          emptyDir: {}
        - name: config-volume
          configMap:
            name: rabbitmq-config
            items:
            - key: rabbitmq.conf
              path: rabbitmq.conf
            - key: enabled_plugins
              path: enabled_plugins

repro_working.yaml

---
apiVersion: v1
kind: ConfigMap
metadata:
  name: rabbitmq-config
data:
  enabled_plugins: |
      [rabbitmq_management].
  rabbitmq.conf: |
      loopback_users.guest = false

---
apiVersion: apps/v1beta1
kind: StatefulSet
metadata:
  name: rabbitmq
spec:
  serviceName: na
  replicas: 1
  template:
    metadata:
      labels:
        app: rabbitmq
    spec:
      terminationGracePeriodSeconds: 10
      containers:
      - name: rabbitmq-k8s
        image: rabbitmq:3.8-rc
        volumeMounts:
          - name: config-volume
            mountPath: /etc/rabbitmq
        ports:
          - name: http
            protocol: TCP
            containerPort: 15672
          - name: amqp
            protocol: TCP
            containerPort: 5672
        livenessProbe:
          exec:
            command: ["rabbitmqctl", "status"]
          initialDelaySeconds: 60
          periodSeconds: 60
          timeoutSeconds: 15
        readinessProbe:
          exec:
            command: ["rabbitmqctl", "status"]
          initialDelaySeconds: 20
          periodSeconds: 60
          timeoutSeconds: 10
        imagePullPolicy: Always
      volumes:
        - name: config-volume
          configMap:
            name: rabbitmq-config
            items:
            - key: rabbitmq.conf
              path: rabbitmq.conf
            - key: enabled_plugins
              path: enabled_plugins