Mounting NFS in a Kubernetes Pod and Exposing It as a Service

NFS (Network File System) is a TCP/IP‑based protocol that allows remote file systems to be accessed as if they were local directories, relying on RPC and typically requiring the installation of nfs-utils and rpcbind packages.

The following steps show how to create a pod that mounts an NFS share, expose it, and check the logs.

1. Create a pod with an NFS volume

apiVersion: v1
kind: Pod
metadata:
  name: haha-nfs
  namespace: dev
  labels:
    apps: nginx-nfs
spec:
  containers:
  - name: nginx
    image: nginx:1.20
    ports:
    - containerPort: 80
    volumeMounts:
    - name: logs-volume
      mountPath: /var/log/nginx
  volumes:
  - name: logs-volume
    nfs:
      server: 172.31.56.52
      path: /data/nfs

2. Expose the pod as a service

kubectl expose pod haha-nfs -n dev --port=80 --target-port=80 --type=NodePort

3. Verify the NFS share contents

# ls /data/nfs
access.log  error.log

4. Access the Nginx service and view NFS logs

# tail -f /var/log/nginx/access.log
172.31.56.207 - - [05/Sep/2023:09:56:25 +0000] "GET / HTTP/1.1" 200 612 "-" "curl/7.29.0" "-"

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