Kubernetes NFS storage using PV and PVC - kubernetes

Question

I have a 3 nodes cluster running in VirtualBox and I'm trying to create a NFS storage using PV and PVC, but it seems that I'm doing something wrong.
I have the following:
apiVersion: v1
kind: PersistentVolume
metadata:
name: redis-pv
labels:
type: nfs
spec:
capacity:
storage: 100Mi
volumeMode: Filesystem
accessModes:
- ReadWriteOnce
persistentVolumeReclaimPolicy: Retain
storageClassName: slow
mountOptions:
- hard
- nfsvers=4.1
nfs:
path: /redis/data
server: 192.168.56.2 #ip of my master-node
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: redis-pvc
spec:
accessModes:
- ReadWriteOnce
volumeMode: Filesystem
resources:
requests:
storage: 100Mi
storageClassName: slow
selector:
matchLabels:
type: nfs
---
apiVersion: apps/v1
kind: Deployment
metadata:
name: redis-master
labels:
app: redis
spec:
selector:
matchLabels:
app: redis
role: master
tier: backend
replicas: 1
template:
metadata:
labels:
app: redis
role: master
tier: backend
spec:
containers:
- name: master
image: redis
resources:
requests:
cpu: 100m
memory: 100Mi
volumeMounts:
- name: data
mountPath: "/redis/data"
ports:
- containerPort: 6379
volumes:
- name: data
persistentVolumeClaim:
claimName: redis-pvc
I've already installed nfs-common in all my nodes.
Whenever creating the PV, PVC and POD the pod does not start and I get the following:
Warning FailedMount 30s kubelet, kubenode02 MountVolume.SetUp failed for volume "redis-pv" : mount failed: exit status 32
Mounting command: systemd-run
Mounting arguments: --description=Kubernetes transient mount for /var/lib/kubelet/pods/9326d818-b78a-42cc-bcff-c487fc8840a4/volumes/kubernetes.io~nfs/redis-pv --scope -- mount -t nfs -o hard,nfsvers=4.1 192.168.56.2:/redis/data /var/lib/kubelet/pods/9326d818-b78a-42cc-bcff-c487fc8840a4/volumes/kubernetes.io~nfs/redis-pv
Output: Running scope as unit run-rc316990c37b14a3ba24d5aedf66a3f6a.scope.
mount.nfs: Connection timed out
Here is the status of kubectl get pv, pvc
NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS REASON AGE
persistentvolume/redis-pv 100Mi RWO Retain Bound default/redis-pvc slow 8s
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
persistentvolumeclaim/redis-pvc Bound redis-pv 100Mi RWO slow 8s
Any ideas of what am I missing?

Answer 1

1 - you need to install your NFS Server: Follow the instructions in this link:
https://vitux.com/install-nfs-server-and-client-on-ubuntu/
2- Create your sharedfolder where you want to persist your data<
mount 192.168.56.2:/mnt/sharedfolder /mnt/shared/folder_client
3- Change in PV.yaml the following instructions:
apiVersion: v1
kind: PersistentVolume
metadata:
name: redis-pv
labels:
type: nfs
spec:
capacity:
storage: 100Mi
volumeMode: Filesystem
accessModes:
- ReadWriteOnce
persistentVolumeReclaimPolicy: Retain
storageClassName: slow
mountOptions:
- hard
- nfsvers=4.1
nfs:
path: /mnt/sharedfolder
server: 192.168.56.2 #ip of my master-node