kubernetes: Volume stuck in attaching state when using multiple PersistentVolumeClaim

I’m using Kube 1.4.5, and AWS storage.

When I try to attach multiple volumes using PVC’s, one of the volumes consistently gets stuck in the attaching state whilst the other is successful.

Below are the definitions that I used.

sonar-persistence.yml

---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: sonarqube-data
spec:
  capacity:
    storage: 5Gi
  accessModes:
    - ReadWriteOnce
  awsElasticBlockStore:
    volumeID: aws://eu-west-1a/vol-XXXXXXX
    fsType: ext4

---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: sonarqube-extensions
spec:
  capacity:
    storage: 5Gi
  accessModes:
    - ReadWriteOnce
  awsElasticBlockStore:
    volumeID: aws://eu-west-1a/vol-XXXXXX
    fsType: ext4

sonar-claim.yml

---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: sonarqube-data
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 5Gi

---
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
  name: sonarqube-extensions
spec:
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 5Gi

sonar-deployment.yml

---
apiVersion: extensions/v1beta1
kind: Deployment
metadata:
  name: sonar
spec:
  replicas: 1
  template:
    metadata:
      name: sonar
      labels:
        name: sonar
    spec:
      containers:
        - image: sonarqube:lts
          args:
            - -Dsonar.web.context=/sonar
          name: sonar
          env:
            - name: SONARQUBE_JDBC_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: postgres-pwd
                  key: password
            - name: SONARQUBE_JDBC_URL
              value: jdbc:postgresql://sonar:5432/sonar
          ports:
            - containerPort: 9000
              name: sonar
          volumeMounts:
          - name: sonarqube-data
            mountPath: /opt/sonarqube/data
          - name: sonarqube-extensions
            mountPath: /opt/sonarqube/extensions
      volumes:
        - name: sonarqube-data
          persistentVolumeClaim:
            claimName: sonarqube-data
        - name: sonarqube-extensions
          persistentVolumeClaim:
            claimName: sonarqube-extensions

The data volume always appears to be successful, and maybe coincidentally is first in the list. I have tried this multiple times but the result is always the same.

The error message is as follows:

Unable to mount volumes for pod "sonar-3504269494-tnzwo_default(2cc5292c-a5d4-11e6-bd99-0a82a8a86ebf)": timeout expired waiting for volumes to attach/mount for pod "sonar-3504269494-tnzwo"/"default". list of unattached/unmounted volumes=[sonarqube-data sonarqube-extensions]
Error syncing pod, skipping: timeout expired waiting for volumes to attach/mount for pod "sonar-3504269494-tnzwo"/"default". list of unattached/unmounted volumes=[sonarqube-data sonarqube-extensions]