k8s部署tomcat数据持久化

1、部署nfs服务器

yum -y install nfs-utils rpcbind

1.2、启动nfs服务

systemctl start nfs

1.3、检查rpcbind

NFS:~ # rpcinfo -p localhost
   program vers proto   port  service
    100000    4   udp    111  portmapper
    100000    3   udp    111  portmapper
    100000    2   udp    111  portmapper
    100000    4   tcp    111  portmapper
    100000    3   tcp    111  portmapper
    100000    2   tcp    111  portmapper
    100024    1   udp  40026  status
    100024    1   tcp  53654  status
    100005    1   udp  20048  mountd
    100005    1   tcp  20048  mountd
    100005    2   udp  20048  mountd
    100005    2   tcp  20048  mountd
    100005    3   udp  20048  mountd
    100005    3   tcp  20048  mountd
    100003    3   tcp   2049  nfs
    100003    4   tcp   2049  nfs
    100227    3   tcp   2049  nfs_acl
    100003    3   udp   2049  nfs
    100003    4   udp   2049  nfs
    100227    3   udp   2049  nfs_acl
    100021    1   udp  38414  nlockmgr
    100021    3   udp  38414  nlockmgr
    100021    4   udp  38414  nlockmgr
    100021    1   tcp  36471  nlockmgr
    100021    3   tcp  36471  nlockmgr
    100021    4   tcp  36471  nlockmgr
    说明：出现以上说明正常

1.4、检查nfs服务

NFS:~ # showmount -e localhost
Export list for localhost:
/app/tomcat_jpress     192.168.1.0/24
/app/nginx_conf        192.168.1.0/24
/app/tomcat_carsharing 192.168.1.0/24
/app/mysql1_data       192.168.1.0/24
说明：出现以上信息说明正常

1.5、配置共享目录

cat /etc/exports
/app/tomcat_jpress 192.168.1.0/24(rw,sync,no_root_squash,no_all_squash)

1.6、加载新添加的目录

exportfs -rv

2、node节点部署nfs及rpcbind

yum -y install nfs-utils rpcbind
说明：只安装不启动就行

3、部署tomcat持久化yaml文件

cat my_tomcat_chijiu.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: tomcat
spec:
  replicas: 2
  selector:
    matchLabels:
      app: tomcat
  minReadySeconds: 1
  progressDeadlineSeconds: 60
  revisionHistoryLimit: 5
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxSurge: 1
      maxUnavailable: 1
  template:
    metadata:
      name: tomcat
      labels:
        app: tomcat
    spec:
      containers:
      - name: tomcat
        image: tomcat:8
        ports:
        - containerPort: 8080
        volumeMounts:
        - name: tz-config
          mountPath: /etc/localtime                #同步时间
        - name: tomcat-webapp
          mountPath: /usr/local/tomcat/webapps     #容器中tomcat站点目录
          readOnly: false                          #关闭目录的只读权限
      volumes:
      - name: tz-config
        hostPath:
          path: /usr/share/zoneinfo/Asia/Shanghai   #本地的时间配置文件
      - name: tomcat-webapp
        nfs:
          server: 192.168.1.89                      #nfs服务器地址
          path: /app/tomcat_jpress                  #nfs共享的目录

4、部署tomcat的service文件

cat tomcat_svc_test.yaml 
apiVersion: v1
kind: Service
metadata:
  name: tomcat
spec:
  type: NodePort
  ports:
   - port: 8080
     nodePort: 30012
  selector:
    app: tomcat

5、创建pod及service

kubectl create -f my_tomcat_chijiu.yaml
kubectl create -f tomcat_svc.yaml

6、检查是否启动成功

[root@k8s_master k8s_yaml]# kubectl get pod 
NAME                         READY   STATUS    RESTARTS   AGE
tomcat-7bc7ffdddb-bkhj8      1/1     Running   0          45m
tomcat-7bc7ffdddb-cjqzc      1/1     Running   0          28m
[root@k8s_master k8s_yaml]# kubectl get svc
NAME           TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)          AGE
kubernetes     ClusterIP   10.254.0.1       <none>        443/TCP          5d20h
tomcat         NodePort    10.254.174.178   <none>        8080:30009/TCP   3d11h

k8s部署tomcat数据持久化

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