如何在 kubernetes(1.10.3) 中直接挂载外部 NFS 共享/卷

Question

我正在使用 kubernetes：v1.10.3，我有一个外部 NFS 服务器，我可以安装在任何地方（任何物理机器）。我想将此 NFS 直接挂载到 pod/container 。我试过了，但每次都出错。不想使用权限，请帮我解决。

错误：卷“nfs”的 MountVolume.SetUp 失败：挂载失败：退出状态 32 挂载命令：systemd-run 挂载参数：--description=Kubernetes 临时挂载 /var/lib/kubelet/pods/d65eb963-68be-11e8- 8181-00163eeb9788/volumes/kubernetes.io~nfs/nfs --scope -- mount -t nfs 10.225.241.137:/stagingfs/alt/ /var/lib/kubelet/pods/d65eb963-68be-1861e80ee volumes/kubernetes.io~nfs/nfs 输出：运行范围作为单元 run-43393.scope。挂载：错误的 fs 类型、错误的选项、10.225.241.137 上的错误超级块：/stagingfs/alt/、缺少代码页或帮助程序或其他错误（对于多个文件系统（例如 nfs、cifs），您可能需要 /sbin/mount。帮助程序）在某些情况下，可以在系统日志中找到有用的信息 - 尝试 dmesg | 尾巴左右。

NFS server :  mount -t nfs 10.X.X.137:/stagingfs/alt   /alt    

我在这里为音量添加了两件事，但每次都会出错。

第一的 ：

"volumeMounts": [
          {
            "name": "nfs",
            "mountPath": "/alt"
          }

        ],

第二 ：

 "volumes": [
  {
    "name": "nfs",
    "nfs": {
      "server": "10.X.X.137",
      "path": "/stagingfs/alt/"
    }
  }

],

---------------------完整的yaml --------------------------- -----

{
  "kind": "Deployment",
  "apiVersion": "extensions/v1beta1",
  "metadata": {
    "name": "jboss",
    "namespace": "staging",
    "selfLink": "/apis/extensions/v1beta1/namespaces/staging/deployments/jboss",
    "uid": "6a85e235-68b4-11e8-8181-00163eeb9788",
    "resourceVersion": "609891",
    "generation": 2,
    "creationTimestamp": "2018-06-05T11:34:32Z",
    "labels": {
      "k8s-app": "jboss"
    },
    "annotations": {
      "deployment.kubernetes.io/revision": "2"
    }
  },
  "spec": {
    "replicas": 1,
    "selector": {
      "matchLabels": {
        "k8s-app": "jboss"
      }
    },
    "template": {
      "metadata": {
        "name": "jboss",
        "creationTimestamp": null,
        "labels": {
          "k8s-app": "jboss"
        }
      },
      "spec": {
          "volumes": [
      {
        "name": "nfs",
        "nfs": {
          "server": "10.X.X.137",
          "path": "/stagingfs/alt/"
        }
      }

    ],
        "containers": [
          {
            "name": "jboss",
            "image": "my.abc.com/alt:7.1_1.1",
            "resources": {},
            "volumeMounts": [
          {
            "name": "nfs",
            "mountPath": "/alt"
          }

        ],
            "terminationMessagePath": "/dev/termination-log",
            "terminationMessagePolicy": "File",
            "imagePullPolicy": "IfNotPresent",
            "securityContext": {
              "privileged": true
            }
          }
        ],
        "restartPolicy": "Always",
        "terminationGracePeriodSeconds": 30,
        "dnsPolicy": "ClusterFirst",
        "securityContext": {},
        "schedulerName": "default-scheduler"
      }
    },
    "strategy": {
      "type": "RollingUpdate",
      "rollingUpdate": {
        "maxUnavailable": "25%",
        "maxSurge": "25%"
      }
    },
    "revisionHistoryLimit": 10,
    "progressDeadlineSeconds": 600
  },
  "status": {
    "observedGeneration": 2,
    "replicas": 1,
    "updatedReplicas": 1,
    "readyReplicas": 1,
    "availableReplicas": 1,
    "conditions": [
      {
        "type": "Available",
        "status": "True",
        "lastUpdateTime": "2018-06-05T11:35:45Z",
        "lastTransitionTime": "2018-06-05T11:35:45Z",
        "reason": "MinimumReplicasAvailable",
        "message": "Deployment has minimum availability."
      },
      {
        "type": "Progressing",
        "status": "True",
        "lastUpdateTime": "2018-06-05T11:35:46Z",
        "lastTransitionTime": "2018-06-05T11:34:32Z",
        "reason": "NewReplicaSetAvailable",
        "message": "ReplicaSet \"jboss-8674444985\" has successfully progressed."
      }
    ]
  }
}

问候阿努帕姆·纳拉扬

Answer 1

如错误日志中所述：

for several filesystems (e.g. nfs, cifs) you might need a /sbin/mount. helper program

根据这个问题，您可能缺少可以使用安装的 nfs-commons 包sudo apt install nfs-common