Question

我的Kubernetes服务失败，看来该服务不想挂载卷。

Unable to mount volumes for pod "metadata-api-local": timeout expired waiting for volumes to attach or mount for pod "metadata"/"metadata-api-local". list of unmounted volumes=[metadata-api-claim]. list of unattached volumes=[metadata-api-claim default-token-8lqmp]

这是日志：

➜  metadata_api git:(develop) ✗ kubectl describe pod -n metadata metadata-api-local-f5bddb8f7-clmwq
Name:           metadata-api-local-f5bddb8f7-clmwq
Namespace:      metadata
Priority:       0
Node:           minikube/192.168.0.85
Start Time:     Wed, 18 Sep 2019 16:59:02 +0200
Labels:         app=metadata-api-local
                pod-template-hash=f5bddb8f7
Annotations:    <none>
Status:         Pending
IP:             
Controlled By:  ReplicaSet/metadata-api-local-f5bddb8f7
Containers:
  metadata-api-local:
    Container ID:   
    Image:          metadata_api:local
    Image ID:       
    Port:           18000/TCP
    Host Port:      0/TCP
    State:          Waiting
      Reason:       ContainerCreating
    Ready:          False
    Restart Count:  0
    Environment Variables from:
      metadata-env  Secret  Optional: false
    Environment:    <none>
    Mounts:
      /var/lib/nodered-peer from metadata-api-claim (rw)
      /var/run/secrets/kubernetes.io/serviceaccount from default-token-8lqmp (ro)
Conditions:
  Type              Status
  Initialized       True 
  Ready             False 
  ContainersReady   False 
  PodScheduled      True 
Volumes:
  metadata-api-claim:
    Type:       PersistentVolumeClaim (a reference to a PersistentVolumeClaim in the same namespace)
    ClaimName:  metadata-api-claim
    ReadOnly:   false
  default-token-8lqmp:
    Type:        Secret (a volume populated by a Secret)
    SecretName:  default-token-8lqmp
    Optional:    false
QoS Class:       BestEffort
Node-Selectors:  <none>
Tolerations:     node.kubernetes.io/not-ready:NoExecute for 300s
                 node.kubernetes.io/unreachable:NoExecute for 300s
Events:
  Type     Reason       Age                From               Message
  ----     ------       ----               ----               -------
  Normal   Scheduled    14m                default-scheduler  Successfully assigned metadata/metadata-api-local-f5bddb8f7-clmwq to minikube
  Warning  FailedMount  47s (x6 over 12m)  kubelet, minikube  Unable to mount volumes for pod "metadata-api-local-f5bddb8f7-clmwq_metadata(94cbb26c-4907-4512-950a-29a25ad1ef20)": timeout expired waiting for volumes to attach or mount for pod "metadata"/"metadata-api-local-f5bddb8f7-clmwq". list of unmounted volumes=[metadata-api-claim]. list of unattached volumes=[metadata-api-claim default-token-8lqmp]

这是我的metas_pvc.yml：

apiVersion: v1
kind: PersistentVolume
metadata:
  name: metadata-api-pv
  namespace: metadata
spec:
  capacity:
    storage: 1Gi
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  claimRef:
    namespace: metadata
    name: metadata-api-claim
  hostPath:
    path: /data/metadata-api
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: metadata-api-claim
  namespace: metadata
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: metadata-postgres-volume
  namespace: metadata
spec:
  capacity:
    storage: 1Gi
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  claimRef:
    namespace: metadata
    name: metadata-postgres-claim
  hostPath:
    path: /data/metadata-postgres
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: metadata-postgres-claim
  namespace: metadata
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 1Gi

当我列出pv时，我得到：

➜  metadata_api git:(develop) ✗ kubectl get pv                                     
NAME                       CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS      CLAIM                              STORAGECLASS   REASON   AGE
metadata-api-pv            1Gi        RWO            Retain           Available   metadata/metadata-api-claim                                12m
metadata-postgres-volume   1Gi        RWO            Retain           Available   metadata/metadata-postgres-claim                           12m

➜  metadata_api git:(develop) ✗ kubectl get pvc                                    
No resources found.

出什么问题了？

Answer 1

您不应指定claimRef，该字段由Kubernetes控制器自动生成。相反，您应该对PersistentVolumes和PersistentVolumeClaims使用存储类，因为这是用于匹配存储类的机制。将storageClassName: name字段添加到您的PersistentVolumes和PersistentVolumeClaims中应该可以解决您的问题。

无法为Pod“ metadata-api-local”挂载卷：超时已到期，等待卷挂接或为pod“ metadata” /“ metadata-api-local”挂载

1 个答案: