1、在项目根目录加上Dockerfile

Dockerfile内容

FROM tomcat

#VOLUME ["/home/data/sts/media","/usr/data/sts/media"]

#定义时区参数
ENV TZ=Asia/Shanghai

#设置时区
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime \
    && echo '$TZ' > /etc/timezone

ARG JAR_PATH=./hwyg-sts-console/target

RUN rm -rf /usr/local/tomcat/webapps/ROOT

#因为打包成root 所以拼接URL的时候不用加项目名称为根目录
ADD ${JAR_PATH}/*.war /usr/local/tomcat/webapps/ROOT.war

CMD ["/usr/local/tomcat/bin/catalina.sh", "run"]

EXPOSE 8080

2、在项目根目录建立k8s文件夹，加入以下两个文件

deployment.json内容

{
  "kind": "Deployment",
  "apiVersion": "apps/v1",
  "metadata": {
    "name": "${APP_NAME}-deployment",
    "namespace": "xxxx",
    "labels": {
      "k8s-app": "${APP_NAME}"
    }
  },
  "spec": {
    "replicas": 1,
    "selector": {
      "matchLabels": {
        "k8s-app": "${APP_NAME}"
      }
    },
    "template": {
      "metadata": {
        "name": "${APP_NAME}",
        "labels": {
          "k8s-app": "${APP_NAME}"
        }
      },
      "spec": {
        "containers": [
          {
            "name": "app",
            "image": "hfdockerhub.com.cc:1443/hfocean/jenkins-${APP_NAME}:${BUILD_NUMBER}",
            "resources": {},
            "imagePullPolicy": "IfNotPresent",
            "securityContext": {
              "privileged": false,
              "procMount": "Default"
            },
            "ports":
              [{ "containerPort": 8080, 
                "targetPort": 8080
              }],
              "volumeMounts":[
                 
              ]
          }
        ],
        "volumes":[],
        "type": "NodePort",
        "restartPolicy": "Always",
        "terminationGracePeriodSeconds": 30,
        "dnsPolicy": "ClusterFirst",
        "securityContext": {},
        "schedulerName": "default-scheduler"
      }
    },
    "strategy": {
      "type": "RollingUpdate",
      "rollingUpdate": {
        "maxUnavailable": "25%",
        "maxSurge": "25%"
      }
    },
    "revisionHistoryLimit": 10,
    "progressDeadlineSeconds": 600
  }
}

service.json内容

{
   "apiVersion":"v1",
   "kind":"Service",
   "metadata":{
      "namespace":"xxxx",
      "name":"${APP_NAME}-service",
      "labels":{
          "k8s-service":"${APP_NAME}"
      }
   },
   "spec":{
       "selector":{
           "k8s-app": "${APP_NAME}"
       },
       "ports":[
           {"port":8080,"targetPort":8080}
       ],
       "type":"NodePort"
   }
}

一般这两个文件内容无需修改，只要修改跟定的namespace就好了，name中的APP_NAME是自定义的环境变量，一般在jekins配置好了

3、jenkins配置

配置环境变量

配置k8s脚本
其中BUILD_NUMBER是JENKINS中可用的环境变量，APP_NAME是自定义的环境变量

docker build  -t hfdockerhub.com.cc:1443/xxxx/jenkins-${APP_NAME}:${BUILD_NUMBER} --build-arg JAR_PATH=./xxxxxx/target .
docker push hfdockerhub.com.cc:1443/xxxxx/jenkins-${APP_NAME}:${BUILD_NUMBER}

在jekins配置

配置完成后保存，然后构建项目

4、到k8s上面查看是否已经部署成功

在jenkins中执行构建后，我们可以在dashboard中看到刚才部署的内容

在“服务”一栏，可以看到由service.yaml创建的服务，这个时间可以看到对外端口为30188

根据此端口就可以访问了