1.基本用法
kind: Pod
apiVersion: v1
metadata:
name: mypod
spec:
containers:
- name: myfrontend
image: dockerfile/nginx
volumeMounts:
- mountPath: "/var/www/html"
name: mypd
volumes:
- name: mypd
persistentVolumeClaim: # 使用PVC
claimName: myclaim
那么需要创建一个pvc
kind: PersistentVolumeClaim
apiVersion: v1
metadata:
name: myclaim
spec:
accessModes:
- ReadWriteOnce
volumeMode: Filesystem
resources:
requests:
storage: 8Gi
storageClassName: slow
selector:
matchLabels:
release: "stable"
matchExpressions:
- {key: environment, operator: In, values: [dev]}
2.注意区分persistentVolumeClaim和statefulset中的 volumeClaimTemplates
volumeClaimTempaltes：存储卷申请模板，创建 pvc并指定 pvc 名称大小，自动创建 pvc，且 pvc 由存储类供应用法如下
apiVersion: v1
kind: Service
metadata:
name: pvc-svc
namespace: default
labels:
app: nginx
spec:
clusterIP: None
ports:
- name: web
port: 80
selector:
app: nginx
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: web
namespace: default
spec:
replicas: 1
selector:
matchLabels:
app: nginx
serviceName: "pvc-svc"
template:
metadata:
labels:
app: nginx
spec:
#dnsPolicy: ClusterFirstWithHostNet #使pod使用k8s的dns而不是宿主机dns
containers:
- name: nginx
image: nginx:stable
imagePullPolicy: IfNotPresent
ports:
- name: web
containerPort: 80
volumeMounts:
- name: www
mountPath: /usr/share/nginx/html
volumeClaimTemplates:
- metadata:
name: www
annotations:
volume.beta.kubernetes.io/storage-class: "nfs" # nfs为我们创建的storage-class名称
spec:
accessModes: [ "ReadWriteMany" ] #指定pv的读写策略
# storageClassName: "nfs" #指定pv的存储类型
resources:
requests:
storage: 1Gi #指定pv的存储大小