哈尔滨网站建设代理商,比wordpress好,网站怎么seo,广告设计网站素材kubernetes资源——pv/pvc持久卷 一、volume数据卷1、hostPath2、挂载nfs实现持久化 二、pv/pvc 持久卷/持久卷声明1、pv/pvc介绍2、pv/pvc的使用流程2.1 创建pv2.2 创建pvc2.3 创建pod#xff0c;使用pv做持久化 一、volume数据卷
用于pod中的数据的持久化存储 支持很多的卷… kubernetes资源——pv/pvc持久卷 一、volume数据卷1、hostPath2、挂载nfs实现持久化 二、pv/pvc 持久卷/持久卷声明1、pv/pvc介绍2、pv/pvc的使用流程2.1 创建pv2.2 创建pvc2.3 创建pod使用pv做持久化 一、volume数据卷
用于pod中的数据的持久化存储 支持很多的卷类型, 例如EmptyDir、hostPath、NAS、SAN、CEPH
1、hostPath
挂载物理机上的目录做持久化
apiVersion: apps/v1
kind: Deployment
metadata:name: test1-hostpath
spec:replicas: 1selector:matchLabels:app: hostpathtemplate:metadata:labels:app: hostpathspec:containers:- name: test1-hostpathimage: centos:7imagePullPolicy: IfNotPresentcommand:- sleep- 3600volumeMounts: // 挂载卷- name: test1-volumemountPath: /test1volumes: // 创建卷名称为test1-volume 类型为hostpath- name: test1-volumehostPath:path: /test/data[rootk8s-master ~]# kubectl get pod -o wide
NAME READY STATUS RESTARTS AGE IP NODE NOMINATED NODE READINESS GATES
test1-hostpath-584f599fcf-wzt2q 1/1 Running 0 117s 10.88.201.193 k8s-node01.linux.com none none
[rootk8s-master ~]#
[rootk8s-master ~]# kubectl exec -ti test1-hostpath-584f599fcf-wzt2q bash
kubectl exec [POD] [COMMAND] is DEPRECATED and will be removed in a future version. Use kubectl exec [POD] -- [COMMAND] instead.
[roottest1-hostpath-584f599fcf-wzt2q /]#
[roottest1-hostpath-584f599fcf-wzt2q /]# touch /test1/{1..10}
[roottest1-hostpath-584f599fcf-wzt2q /]# ls /test1/
1 10 2 3 4 5 6 7 8 9
[roottest1-hostpath-584f599fcf-wzt2q /]#
[roottest1-hostpath-584f599fcf-wzt2q /]# exit
exit2、挂载nfs实现持久化
apiVersion: apps/v1
kind: Deployment
metadata:name: test2-pod-nfs
spec:replicas: 1selector:matchLabels:app: nfstemplate:metadata:labels:app: nfsspec:containers:- name: test2-pod-nfsimage: centos:7imagePullPolicy: IfNotPresentcommand:- sleep- 3600volumeMounts:- name: test2-nfs-volumemountPath: /test2volumes:- name: test2-nfs-volumenfs:server: 192.168.140.13path: /test2二、pv/pvc 持久卷/持久卷声明
1、pv/pvc介绍
pv 持久卷后端真实存储空间的映射 pvc 持久卷声明使用存储的申请
使用流程: 1、创建pv描述后端真实的存储空间 2、创建pvc描述使用存储的申请 3、创建pod挂载pvc使用存储
2、pv/pvc的使用流程
2.1 创建pv
apiVersion: v1
kind: PersistentVolume
metadata:name: pv-2g
spec:capacity:storage: 2GaccessModes:- ReadWriteManypersistentVolumeReclaimPolicy: Recyclenfs:server: 192.168.140.13path: /test6apiVersion: v1
kind: PersistentVolume
metadata:name: pv-3g
spec:capacity:storage: 3GaccessModes:- ReadWriteOncepersistentVolumeReclaimPolicy: Recyclenfs:server: 192.168.140.13path: /test7accessModes用于指定PV的访问模式共有四种 ReadWriteOnce 被单个节点以读写模式挂载 ReadWriteMany 被多个节点以读写模式挂载 ReadOnlyMany 被多个节点以只读模式挂载 ReadOnlyOnce, k8s 1.29 被单节点以只读模式挂载
persistentVolumeReclaimPolicy: 指定回收模式是自动回收当空间被释放时K8S自动清理然后可以继续绑定使用
[rootk8s-master pvTest]# kubectl get pv
NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS VOLUMEATTRIBUTESCLASS REASON AGE
pv-2g 2G RWX Recycle Available unset 2m26s
pv-3g 3G RWO Recycle Available unset 46s2.2 创建pvc
apiVersion: v1
kind: PersistentVolumeClaim
metadata:name: pvc-1g
spec:accessModes:- ReadWriteManyresources:requests:storage: 1G[rootk8s-master pvTest]# kubectl get pvc
NAME STATUS VOLUME CAPACITY ACCESS MODES STORAGECLASS VOLUMEATTRIBUTESCLASS AGE
pvc-1g Bound pv-2g 2G RWX unset 10sbash
[rootk8s-master pvTest]# kubectl get pv
NAME CAPACITY ACCESS MODES RECLAIM POLICY STATUS CLAIM STORAGECLASS VOLUMEATTRIBUTESCLASS REASON AGE
pv-2g 2G RWX Recycle Bound default/pvc-1g unset 10m
pv-3g 3G RWO Recycle Available unset 8m34s2.3 创建pod使用pv做持久化
apiVersion: apps/v1
kind: Deployment
metadata:name: test1-pod
spec:replicas: 1selector:matchLabels:app: pvtemplate:metadata:labels:app: pvspec:containers:- name: test1-podimage: centos:7imagePullPolicy: IfNotPresentcommand:- sleep- 3600volumeMounts:- name: test1-pod-pv-volumemountPath: /test1volumes:- name: test1-pod-pv-volumepersistentVolumeClaim: // 通过关联pvc创建数据卷claimName: pvc-1g
