weblogic的部署方法

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• 首先是Weblogic的Docker部署。

请仔细阅读：https://my.oschina.net/u/3867634/blog/2246865

至此，我们已经构建了oracle/weblogic:12.2.1.3-developer镜像，为了方便后续使用，我们可以搭建Harbor本地私有镜像仓库，将次镜像push至仓库中。

• 搭建Harbor仓库

请参阅：https://github.com/goharbor/harbor/blob/release-1.6.0/docs/installation_guide.md

中文版：https://blog.csdn.net/aixiaoyang168/article/details/73549898

搭建完成后，kubernetes节点中需要修改insecure-registry：

//编辑配置docker-option配置文件vi /etc/systemd/system/docker.service.d/docker-options.conf//在文件中添加 --insecure-registry=172.17.20.25 [Service]Environment="DOCKER_OPTS=--insecure-registry=10.233.0.0/18 --insecure-registry=172.17.20.25 --graph=/var/lib/docker  --log-opt max-size=50m --log-opt max-file=5 \--iptables=false"//重启dockersystemctl daemon-reloadsystemctl restart docker

然后，将构建好的镜像push至仓库中：

//给image打标签docker tag oracle/weblogic:12.1.3-developer 172.17.20.25/oracle/weblogic:12.1.3-developer//push至172.17.20.25docker push 172.17.20.25/oracle/weblogic:12.1.3-developer

现在，可以登录至http://172.17.20.25查看镜像

拉取镜像：

    docker pull 172.17.20.25/oracle/weblogic:12.2.1.3-developer

• kubernetes集群中部署Weblogic

  拉取docker-images代码：

$ git clone https://github.com/oracle/docker-images.git//进入wls-k8s-domain目录[root@localhost ~]# cd docker-images/OracleWebLogic/samples/wls-k8s-domain/[root@localhost wls-k8s-domain]# lsbuild.sh  container-scripts  Dockerfile  k8s  README.md

构建wls-k8s-domain镜像：

$ docker build -t wls-k8s-domain .

将镜像tag打成172.17.20.25/oracle/wls-k8s-domain:1.0后push至Harbor以方便k8s节点拉取。

再修改k8s/wls-admin.yml为如下所示：

apiVersion: apps/v1beta1kind: Deploymentmetadata:  name: admin-serverspec:  selector:    matchLabels:      app: admin-server  replicas: 1  template:    metadata:      labels:        app: admin-server    spec:      podAntiAffinity:          requiredDuringSchedulingIgnoredDuringExecution:          - labelSelector:              matchExpressions:              - key: app                operator: In                values:                - admin-server            topologyKey: "kubernetes.io/hostname"      containers:      - name: admin-server#image修改为harbor上的名字        image: 172.17.20.25/oracle/wls-k8s-domain:1.0        imagePullPolicy: IfNotPresent        command: ["sh"]        args: ["/u01/oracle/startadmin.sh"]        readinessProbe:            httpGet:              path: /weblogic/ready              port: 8001            initialDelaySeconds: 15            timeoutSeconds: 5        ports:        - containerPort: 8001        env:        - name: WLUSER          valueFrom:            secretKeyRef:              name: wlsecret              key: username        - name: WLPASSWORD          valueFrom:            secretKeyRef:              name: wlsecret              key: password        volumeMounts:        - mountPath: /u01/wlsdomain          name: domain-home      volumes:      - name: domain-home        persistentVolumeClaim:          claimName: wlserver-pvc-1---apiVersion: v1kind: Servicemetadata:  name: admin-server  labels:    app: admin-serverspec:  type: NodePort  selector:    app: admin-server  ports:    - name: client      protocol: TCP      port: 8001      targetPort: 8001      nodePort: 30007  selector:    app: admin-server

修改k8s/wls-stateful.yml为：

apiVersion: apps/v1beta1 # for versions before 1.6.0 use extensions/v1beta1kind: StatefulSetmetadata:  name: managed-serverspec:  serviceName: wls-subdomain  selector:    matchLabels:      app: managed-server  replicas: 2  template:    metadata:      name: ms      labels:        app: managed-server    spec:#将managed-server与admin-server部署在同一个node上      affinity:        podAffinity:          requiredDuringSchedulingIgnoredDuringExecution:          - labelSelector:              matchExpressions:              - key: app                operator: In                values:                - admin-server            topologyKey: "kubernetes.io/hostname"      subdomain: wls-subdomain      containers:      - name: managed-server        image: 172.17.20.25/oracle/wls-k8s-domain:1.0        imagePullPolicy: IfNotPresent        command: ["sh"]        args: ["/u01/oracle/startms.sh"]        readinessProbe:            httpGet:              path: /weblogic/ready              port: 8011            initialDelaySeconds: 15            timeoutSeconds: 5        ports:        - containerPort: 8011        env:        - name: JAVA_OPTIONS          value: "-Dweblogic.StdoutDebugEnabled=true"        - name: USER_MEM_ARGS          value: "-Xms64m -Xmx256m "        - name: MY_POD_IP          valueFrom:            fieldRef:              fieldPath: status.podIP        - name: MY_POD_NAME          valueFrom:            fieldRef:              fieldPath: metadata.name        - name: DNS_DOMAIN_NAME          value: "wls-subdomain"        - name: WLUSER          valueFrom:            secretKeyRef:              name: wlsecret              key: username        - name: WLPASSWORD          valueFrom:            secretKeyRef:              name: wlsecret              key: password        volumeMounts:        - mountPath: /u01/wlsdomain          name: domain-home        - mountPath: /u01/filestores          name: filestore-data      volumes:      - name: domain-home        persistentVolumeClaim:          claimName: wlserver-pvc-1      - name: filestore-data        persistentVolumeClaim:          claimName: wlserver-pvc-2---apiVersion: v1 # headless service required for statefulSetkind: Servicemetadata:  name: wls-subdomain  labels:    app: managed-serverspec:  ports:  - name: client    port: 8011    protocol: TCP    targetPort: 8011  clusterIP: None  selector:    app: managed-server---apiVersion: v1kind: Servicemetadata:  name: wls-service  labels:    app: managed-serverspec:  type: NodePort  ports:  - name: client    port: 8011    protocol: TCP    targetPort: 8011    nodePort: 30009  selector:    app: managed-server

修改k8s/pv.yml

kind: PersistentVolumeapiVersion: v1metadata:  name: pv1  labels:    app: wls-domainspec:  storageClassName: manual  capacity:    storage: 10Gi  accessModes:    - ReadWriteMany  persistentVolumeReclaimPolicy: Recycle  # Retain, Recycle, Delete  hostPath:#path填上本地目录    path: "/home/oracle/pv/pv1"  #nfs:    #server:     #path: ---kind: PersistentVolumeapiVersion: v1metadata:  name: pv2  labels:    app: wls-domainspec:  storageClassName: manual  capacity:    storage: 10Gi  accessModes:    - ReadWriteMany  persistentVolumeReclaimPolicy: Recycle  # Retain, Recycle, Delete  hostPath:    path: "/home/oracle/pv/pv2"  #nfs:    #server:     #path: ---kind: PersistentVolumeapiVersion: v1metadata:  name: pv3  labels:    app: wls-domainspec:  storageClassName: manual  capacity:    storage: 10Gi  accessModes:    - ReadWriteOnce  persistentVolumeReclaimPolicy: Recycle  # Retain, Recycle, Delete  hostPath:    path: "/home/oracle/pv/pv3"  #nfs:    #server:     #path: 

NOTE:hostPath下所填的目录需有777权限。

IMPORTANT：在执行创建脚本之前，必须确保有一个用户的UID和GID为1000:1000。

然后，依次执行以下命令：

$ kubectl create -f  k8s/secrets.yml$ kubectl create -f  k8s/pv.yml$ kubectl create -f  k8s/pvc.yml$ kubectl create -f  k8s/wls-admin.yml$ kubectl create -f  k8s/wls-stateful.yml

至此，一个带有两个managed-server的domain便创建好了。

$ kubectl get allNAME                               READY     STATUS    RESTARTS   AGEpo/admin-server-1238998015-f932w   1/1       Running   0          11mpo/managed-server-0                1/1       Running   0          11mpo/managed-server-1                1/1       Running   0          8mNAME                CLUSTER-IP       EXTERNAL-IP   PORT(S)          AGEsvc/admin-server    10.102.160.123          8001:30007/TCP   11msvc/kubernetes      10.96.0.1                443/TCP          39dsvc/wls-service     10.96.37.152            8011:30009/TCP   11msvc/wls-subdomain   None                     8011/TCP         11mNAME                          DESIRED   CURRENT   AGEstatefulsets/managed-server   2         2         11mNAME                  DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGEdeploy/admin-server   1         1         1            1           11mNAME                         DESIRED   CURRENT   READY     AGErs/admin-server-1238998015   1         1         1         11m

现在可以登录http:IP:30007/console访问控制台，默认账号为：weblogic，密码为：weblogic1。

在weblogic中部署的应用访问端口为30009。

• 改进

我们可以制作chart来一键安装，步骤如下：

1.创建名为hello-world的charts

helm create weblogic

2.将k8s/目录放入weblogic/templates目录下

注：helloworld程序简单，程序不需引入相关依赖，也不需要传入参数。charts提供了版本控制，引入依赖，传参等配置文件。

3.打包tar

helm package weblogic

4.在本地创建charts文件夹，并将打包的tar文件移入，生成index.yaml

mv weblogic-0.1.0.tgz charts/

helm serve --repo-path ./charts

5、安装chart

helm install weblogic

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