Installation On Microk8s-NFS for Persistent Volumes

Lab Setup:

1. Setup an NFS server

sudo apt-get install nfs-kernel-server

Create a directory to be used for NFS:

sudo mkdir -p /srv/nfs

sudo chown nobody:nogroup /srv/nfs

sudo chmod 0777 /srv/nfs

Make sure that the IP addresses of all your MicroK8s nodes are able to mount this share.

sudo mv /etc/exports /etc/exports.bak

echo '/srv/nfs 192.168.10.0/24(rw,sync,no_subtree_check)' | sudo tee /etc/exports

Restart server.

sudo systemctl restart nfs-kernel-server

2. Install the CSI driver for NFS

microk8s enable helm3 microk8s helm3 repo add csi-driver-nfs https://raw.githubusercontent.com/kubernetes-csi/csi-driver-nfs/master/charts

microk8s helm3 repo update

install the Helm chart under the kube-system namespace with

microk8s helm3 install csi-driver-nfs csi-driver-nfs/csi-driver-nfs \ --namespace kube-system \ --set kubeletDir=/var/snap/microk8s/common/var/lib/kubelet

CSI controller and node pods to come up

microk8s kubectl --namespace=kube-system get pods -- selector="app.kubernetes.io/instance=csi-driver-nfs" --watch

microk8s kubectl wait pod --selector app.kubernetes.io/name=csi-driver-nfs --for condition=ready --namespace kube-system

Verification CSI Drivers.

microk8s kubectl get csidrivers

3. Create a StorageClass for NFS

Create a Kubernetes Storage Class that uses the nfs.csi.k8s.io CSI driver

microk8s kubectl apply -f sc-nfs.yaml

Persistent Volume Claim Yml.

microk8s kubectl apply -f pvc1.yml

microk8s kubectl get pv

microk8s kubectl get pvc

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End Of Lab - Good Luck!