我遵循了这一点（https://matthewpalmer.net/kubernetes-app-developer/articles/kubernetes-volumes-example-nfs-persistent-volume.html) 链接并使用以下 yaml 文件在我的集群中安装了一个 NFS 服务器：
kind: Service
apiVersion: v1
metadata:
name: nfs-service
spec:
selector:
role: nfs
ports:
# Open the ports required by the NFS server
# Port 2049 for TCP
- name: tcp-2049
port: 2049
protocol: TCP
# Port 111 for UDP
- name: udp-111
port: 111
protocol: UDP
---
kind: Pod
apiVersion: v1
metadata:
name: nfs-server-pod
labels:
role: nfs
spec:
containers:
- name: nfs-server-container
image: cpuguy83/nfs-server
securityContext:
privileged: true
args:
# Pass the paths to share to the Docker image
- /exports
我通过以下命令安装了服务器：
kubectl create namespace nfs
kubectl apply -f nfs-server.yaml -n nfs
服务器安装顺利并正常运行。
我在所有节点上安装nfs-common，然后通过以下命令安装 nfs-client provisioner helm chart：
helm install stable/nfs-client-provisioner --set nfs.server=nfs-service --set nfs.path=/exported/path --name=nfs-client --namespace=nfs
但是 nfs-client 停留在 ContainerCreating 状态，这是描述的输出：
Conditions:
Type Status
Initialized True
Ready False
ContainersReady False
PodScheduled True
Volumes:
nfs-client-root:
Type: NFS (an NFS mount that lasts the lifetime of a pod)
Server: nfs-service
Path: /exported/path
ReadOnly: false
nfs-client-nfs-client-provisioner-token-k9n8n:
Type: Secret (a volume populated by a Secret)
SecretName: nfs-client-nfs-client-provisioner-token-k9n8n
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
---- ------ ---- ---- -------
Warning FailedMount 59m kubelet, serflex-argus-1 MountVolume.SetUp failed for volume "nfs-client-root" : mount failed: exit status 32
Mounting command: systemd-run
Mounting arguments: --description=Kubernetes transient mount for /var/lib/kubelet/pods/811e6fd7-0e48-40a3-ad4d-2f677d49178c/volumes/kubernetes.io~nfs/nfs-client-root --scope -- mount -t nfs nfs-service:/exported/path /var/lib/kubelet/pods/811e6fd7-0e48-40a3-ad4d-2f677d49178c/volumes/kubernetes.io~nfs/nfs-client-root
Output: Running scope as unit: run-rdc5765db89a64abf87610ba4d853f48d.scope
mount.nfs: Connection timed out
Warning FailedMount 57m kubelet, serflex-argus-1 MountVolume.SetUp failed for volume "nfs-client-root" : mount failed: exit status 32
Mounting command: systemd-run
Mounting arguments: --description=Kubernetes transient mount for /var/lib/kubelet/pods/811e6fd7-0e48-40a3-ad4d-2f677d49178c/volumes/kubernetes.io~nfs/nfs-client-root --scope -- mount -t nfs nfs-service:/exported/path /var/lib/kubelet/pods/811e6fd7-0e48-40a3-ad4d-2f677d49178c/volumes/kubernetes.io~nfs/nfs-client-root
Output: Running scope as unit: run-r0b472b9b183240bd8a4a3020bc13a129.scope
mount.nfs: Connection timed out
Warning FailedMount 55m kubelet, serflex-argus-1 MountVolume.SetUp failed for volume "nfs-client-root" : mount failed: exit status 32
Mounting command: systemd-run
Mounting arguments: --description=Kubernetes transient mount for /var/lib/kubelet/pods/811e6fd7-0e48-40a3-ad4d-2f677d49178c/volumes/kubernetes.io~nfs/nfs-client-root --scope -- mount -t nfs nfs-service:/exported/path /var/lib/kubelet/pods/811e6fd7-0e48-40a3-ad4d-2f677d49178c/volumes/kubernetes.io~nfs/nfs-client-root
Output: Running scope as unit: run-r8f149b9cfb4d414cb15834537f4fd88a.scope
mount.nfs: Connection timed out
Warning FailedMount 52m kubelet, serflex-argus-1 MountVolume.SetUp failed for volume "nfs-client-root" : mount failed: exit status 32
Mounting command: systemd-run
Mounting arguments: --description=Kubernetes transient mount for /var/lib/kubelet/pods/811e6fd7-0e48-40a3-ad4d-2f677d49178c/volumes/kubernetes.io~nfs/nfs-client-root --scope -- mount -t nfs nfs-service:/exported/path /var/lib/kubelet/pods/811e6fd7-0e48-40a3-ad4d-2f677d49178c/volumes/kubernetes.io~nfs/nfs-client-root
Output: Running scope as unit: run-r3f2e2388086f42f987f0e1475ef95385.scope
mount.nfs: Connection timed out
Warning FailedMount 50m kubelet, serflex-argus-1 MountVolume.SetUp failed for volume "nfs-client-root" : mount failed: exit status 32
Mounting command: systemd-run
Mounting arguments: --description=Kubernetes transient mount for /var/lib/kubelet/pods/811e6fd7-0e48-40a3-ad4d-2f677d49178c/volumes/kubernetes.io~nfs/nfs-client-root --scope -- mount -t nfs nfs-service:/exported/path /var/lib/kubelet/pods/811e6fd7-0e48-40a3-ad4d-2f677d49178c/volumes/kubernetes.io~nfs/nfs-client-root
Output: Running scope as unit: run-r8db7f40d8a7948598deae1fb07162372.scope
mount.nfs: Connection timed out
Warning FailedMount 48m kubelet, serflex-argus-1 MountVolume.SetUp failed for volume "nfs-client-root" : mount failed: exit status 32
Mounting command: systemd-run
Mounting arguments: --description=Kubernetes transient mount for /var/lib/kubelet/pods/811e6fd7-0e48-40a3-ad4d-2f677d49178c/volumes/kubernetes.io~nfs/nfs-client-root --scope -- mount -t nfs nfs-service:/exported/path /var/lib/kubelet/pods/811e6fd7-0e48-40a3-ad4d-2f677d49178c/volumes/kubernetes.io~nfs/nfs-client-root
Output: Running scope as unit: run-rff3d9f71b0e44148ba70c3f9f706d8e4.scope
mount.nfs: Connection timed out
Warning FailedMount 46m kubelet, serflex-argus-1 MountVolume.SetUp failed for volume "nfs-client-root" : mount failed: exit status 32
Mounting command: systemd-run
Mounting arguments: --description=Kubernetes transient mount for /var/lib/kubelet/pods/811e6fd7-0e48-40a3-ad4d-2f677d49178c/volumes/kubernetes.io~nfs/nfs-client-root --scope -- mount -t nfs nfs-service:/exported/path /var/lib/kubelet/pods/811e6fd7-0e48-40a3-ad4d-2f677d49178c/volumes/kubernetes.io~nfs/nfs-client-root
Output: Running scope as unit: run-r05af2a5659ad47bea7a0e7010d280444.scope
mount.nfs: Connection timed out
Warning FailedMount 20m (x5 over 56m) kubelet, serflex-argus-1 Unable to attach or mount volumes: unmounted volumes=[nfs-client-root], unattached volumes=[nfs-client-nfs-client-provisioner-token-k9n8n nfs-client-root]: timed out waiting for the condition
Warning FailedMount 9m7s (x15 over 59m) kubelet, serflex-argus-1 Unable to attach or mount volumes: unmounted volumes=[nfs-client-root], unattached volumes=[nfs-client-root nfs-client-nfs-client-provisioner-token-k9n8n]: timed out waiting for the condition
Warning FailedMount 3m20s (x15 over 43m) kubelet, serflex-argus-1 (combined from similar events): MountVolume.SetUp failed for volume "nfs-client-root" : mount failed: exit status 32
Mounting command: systemd-run
Mounting arguments: --description=Kubernetes transient mount for /var/lib/kubelet/pods/811e6fd7-0e48-40a3-ad4d-2f677d49178c/volumes/kubernetes.io~nfs/nfs-client-root --scope -- mount -t nfs nfs-service:/exported/path /var/lib/kubelet/pods/811e6fd7-0e48-40a3-ad4d-2f677d49178c/volumes/kubernetes.io~nfs/nfs-client-root
Output: Running scope as unit: run-r27616bcceccc4ff194ac009997604d31.scope
mount.nfs: Connection timed out
我必须提到我正在运行 k8s v1.16。
我该如何解决这个问题？
更新
我不知道问题是什么，但是当我从 k8s 中删除 nfs 服务器并使用位于裸机上的服务器时，客户端开始正常工作。
答案1
确保你已经在所有发行版上安装了nfs-utils（rpm-base 发行版）或nfs-common（deb-based 发行版）软件包Kubernetes节点。
答案2
如果你使用 NFS v3，那么你还需要运行另一个端口和守护进程 -安装通常情况下，mountd 会选择一个随机端口号。因此，您必须将其固定/etc/sysconfig/nfs
MOUNTD_PORT=892
并且，正如@mario所提到的，确保所有端口都是 TCP。
对于使用 NFSv4.x 的客户端，您可能需要在命令行上指定它：
mount -vers=4.1 ....
或者
mountOptions:
- tcp
- nfsvers=4.1
信息deployment.yaml
答案3
不确定这个问题是否解决了。但是当我遇到这个问题时，执行下面的操作可以解决错误
