创建PV-持久化存储

1.创建1台单独的nfs服务器,然后安装nfs服务并配置好/etc/exports文件

例如:

[root@nfs ~]# ls /volume/    存放tomcat程序的文件目录

tomcat_yolink

[root@nfs ~]# cat /etc/exports    nfs配置文件

/volume/ 172.16.0.0/24(rw,sync,all_squash)

[root@nfs ~]# systemctl status nfs  nfs启动状态

● nfs-server.service - NFS server and services

  Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; enabled; vendor preset: disabled)

  Drop-In: /run/systemd/generator/nfs-server.service.d

          └─order-with-mounts.conf

  Active: active (exited) since Sat 2018-11-03 14:32:01 CST; 9h ago

  Process: 13997 ExecStopPost=/usr/sbin/exportfs -f (code=exited, status=0/SUCCESS)

  Process: 13995 ExecStopPost=/usr/sbin/exportfs -au (code=exited, status=0/SUCCESS)

  Process: 13992 ExecStop=/usr/sbin/rpc.nfsd 0 (code=exited, status=0/SUCCESS)

  Process: 14019 ExecStart=/usr/sbin/rpc.nfsd $RPCNFSDARGS (code=exited, status=0/SUCCESS)

  Process: 14013 ExecStartPre=/bin/sh -c /bin/kill -HUP `cat /run/gssproxy.pid` (code=exited, status=0/SUCCESS)

  Process: 14011 ExecStartPre=/usr/sbin/exportfs -r (code=exited, status=0/SUCCESS)

Main PID: 14019 (code=exited, status=0/SUCCESS)

  CGroup: /system.slice/nfs-server.service

Nov 03 14:32:01 nfs systemd[1]: Starting NFS server and services...

Nov 03 14:32:01 nfs systemd[1]: Started NFS server and services.

2.然后在k8s节点,如master,node节点安装nfs程序并挂载nfs服务端的内容

例如:

mount -t nfs 172.16.0.10:/volume/ /volume

以上是nfs安装成功

3.然后配置持久化存储pv.yaml文件

例如:

[root@master1 dockerfile]# cat pv.yaml

apiVersion: v1

kind: PersistentVolume

metadata:

  name: nfs-pv

spec:

  capacity:

    storage: 20Gi

  volumeMode: Filesystem

  accessModes:

  - ReadWriteMany

  persistentVolumeReclaimPolicy: Recycle

  storageClassName: slow

  nfs:

    path: /volume

    server: 172.16.0.10

[root@master1 dockerfile]# kubectl get pv

NAME      CAPACITY  ACCESS MODES  RECLAIM POLICY  STATUS      CLAIM    STORAGECLASS  REASON    AGE

nfs-pv    20Gi      RWX            Recycle          Available            slow                    6m

创建PVC

[root@master1 tomcat-link]# vim tomcat-deployment5.yaml

apiVersion: v1

kind: Service

metadata:

  name: tomcat-nfs

  labels:

    app: tomcat-nfs

spec:

  type: NodePort

  ports:

  - port: 8080

    targetPort: 8080

    nodePort: 30000

    protocol: TCP

  selector:

  app: tomcat-nfs

---

apiVersion: extensions/v1beta1

kind: Deployment

metadata:

  name: tomcat-yolink

  labels:

    app: tomcat-nfs

spec:

  replicas: 2

  selector:

    matchLabels:

      app: tomcat-nfs

  template:

    metadata:

      labels:

        app: tomcat-nfs

      annotations:

        app: tomcat-clouster

    spec:

      containers:

      - name: tomcat-nfs

        image: 172.16.0.2:5000/docker.io/tomcat

        imagePullPolicy: IfNotPresent

        ports:

        - containerPort: 8080

        volumeMounts:

        - name: tomcatdata

          mountPath: /usr/local/tomcat/webapps/ROOT

      volumes:

        - name: tomcatdata

          hostPath:

            path: /usr/local/www.link.com

            type: DirectoryOrCreate