Using Local Path Provisioner
Using Local Path Provisioner
Overview
Local Path Provisioner, provides a way for the Kubernetes users to utilize the local storage in each node. It supports multi-node setups. This tutorial will show you how to setup local-path-prvisioner on two node minikube cluster.
Prerequisites
- Minikube version higher than v1.27.0
- kubectl
Tutorial
- Start a cluster with 2 nodes:
$ minikube start -n 2
- Enable
storage-provisioner-rancheraddon:
$$$ minikube addons enable storage-provisioner-rancher$$
- You should be able to see Pod in the
local-path-storagenamespace:
$$$ kubectl get pods -n local-path-storage
NAME READY STATUS RESTARTS AGE
local-path-provisioner-7f58b4649-hcbk9 1/1 Running 0 38s$$
- The
local-pathStorageClass should be marked asdefault:
$$$ kubectl get sc
NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE
local-path (default) rancher.io/local-path Delete WaitForFirstConsumer false 107s
standard k8s.io/minikube-hostpath Delete Immediate false 4m27s$$
- The following
yamlcreates PVC and Pod that creates file with content on second node (minikube-m02):
$$---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
name: test-pvc
spec:
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 64Mi
---
apiVersion: v1
kind: Pod
metadata:
name: test-local-path
spec:
restartPolicy: OnFailure
nodeSelector:
"kubernetes.io/hostname": "minikube-m02"
containers:
- name: busybox
image: busybox:stable
command: ["sh", "-c", "echo 'local-path-provisioner' > /test/file1"]
volumeMounts:
- name: data
mountPath: /test
volumes:
- name: data
persistentVolumeClaim:
claimName: test-pvc$$
$$$ kubectl get pvc
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS AGE
test-pvc Bound pvc-f07e253b-fea7-433a-b0ac-1bcea3f77076 64Mi RWO local-path 5m19s$$
$$$ kubectl get pods -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
test-local-path 0/1 Completed 0 5m19s 10.244.1.5 minikube-m02 $$
- On the second node we are able to see created file with content
local-path-provisioner:
$$$ minikube ssh -n minikube-m02 "cat /opt/local-path-provisioner/pvc-f07e253b-fea7-433a-b0ac-1bcea3f77076_default_test-pvc/file1"
local-path-provisioner$$
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