jenkins触发式自动构建tomcat镜像并发布至kubernetes集群

| 分类 linux  | 标签 jenkins  docker  harbor  kubernetes  k8s 

一、制作Dockerfile文件

1.在172.19.2.51上部署

mkdir -pv /opt/git
git clone http://172.19.2.140:18080/lvqingshan/gcgj.git
cd /opt/git/gcgj
scp app@172.19.2.1:/home/app/portal-tomcat/webapps/portal.war ./
scp app@192.168.37.34:/home/app/portal-tomcat/conf/server.xml ./

vim Dockerfile
FROM tomcat:7.0.77-jre8		#这里是基础镜像
ADD server.xml /usr/local/tomcat/conf	#server.xml文件要和Dockerfile再同一目录，这里是替换文件
RUN rm -rf /usr/local/tomcat/webapps/*
COPY portal.war /usr/local/tomcat/webapps/ROOT.war		#portal.war文件要和Dockerfile再同一目录，这里是复制文件
EXPOSE 8080		#对外开放端口
CMD ["/usr/local/tomcat/bin/catalina.sh","run"]		#启动镜像时执行的命令

2.测试dockerfile是否能正常工作

docker build -t gcgj/portal .
docker run -p 38080:8080 -idt gcgj/portal:latest
git add -A
git commit
git push -u origin master
gitlab账号lvqingshan
密码abcd1234

二、配置登录habor仓库（仓库为172.19.2.139）

1.在192.168.13.45上配置仓库私钥

mkdir -pv /etc/docker/certs.d/172.19.2.139/
vim /etc/docker/certs.d/172.19.2.139/ca.crt
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

2.登录仓库

docker login 172.19.2.139
Username: admin
Password: Cmcc@1ot

3.上传镜像测试

在habor上创建gcgj仓库后才能push

docker tag gcgj/portal:latest 172.19.2.139/gcgj/portal
docker login -p admin -u Cmcc@1ot -e 172.19.2.139
docker push 172.19.2.139/gcgj/portal

三、kubernets文件配置

在kubernetes主节点172.19.2.50上配置

vim /opt/kube-portal/portal-rc1.yaml
apiVersion: v1
kind: ReplicationController
metadata:
  name: gcgj-portal
spec:
  replicas: 2
  selector:
	app: portal
  template:
	metadata:
	  labels:
		app: portal		#加标签
	spec:
	  containers:
	  - image: 172.19.2.139/gcgj/portal:latest		#要发布的镜像
		name: portal
		resources:
		  limits:
			cpu: "2"		#pod占用的cpu资源
			memory: 2Gi		#pod占用的内存资源
		ports:
		- containerPort: 8080		#pod提供的端口
		volumeMounts:
		- mountPath: /usr/local/tomcat/logs		#镜像内要挂载的目录
		  name: portal-logs
	  volumes:
	  - name: portal-logs
		hostPath:
		  path: /opt/logs/portal		#映射到本地的目录

vim /opt/kube-portal/portal-svc1.yaml
apiVersion: v1
kind: Service
metadata:
  name: gcgj-portal
spec:
  ports:
  - name: portal-svc
	port: 8080
	targetPort: 8080
	nodePort: 30088		#proxy映射出来的端口
  selector:
	app: portal
  type: NodePort		#端口类型

四、jenkins配置

1.General中配置参数化构建过程

新增String Parameter

名字：VERSION

默认值：[空]

描述：请输入版本号

1

2.源码管理Git设置

Repository URL 为http://172.19.2.140:18080/lvqingshan/gcgj.git

2

3.设置Gitlab出现变更自动触发构建

一分钟检测一次gitlab项目是否有变化

*/1 * * * *

3 4

4.Execute shell设置

两种控制版本的方式，当自动触发构建或者版本号为空时使用时间戳作为版本，当填入版本号时使用填入的版本号

imagesid=`docker images | grep -i gcgj | awk '{print $3}'| head -1`
project=/var/lib/jenkins/jobs/build-docker-router-portal/workspace

if [ -z "$VERSION" ];then
	VERSION=`date +%Y%m%d%H%M`
fi

echo $VERSION

if docker ps -a|grep -i gcgj;then
   docker rm -f gcgj
fi

if [ -z "$imagesid" ];then
	echo $imagesid "is null"
else
	docker rmi -f $imagesid 
fi

docker build -t gcgj/portal:$VERSION $project


docker tag gcgj/portal:$VERSION 172.19.2.139/gcgj/portal:$VERSION
docker tag gcgj/portal:$VERSION 172.19.2.139/gcgj/portal:latest
docker login -u admin -p Cmcc@1ot 172.19.2.139
docker push 172.19.2.139/gcgj/portal:$VERSION
docker push 172.19.2.139/gcgj/portal:latest

5

5.ansible-playbook配置

在ansible主机192.168.13.45上配置

vim /home/app/ansible/playbooks/opstest/portal.yaml
- hosts: 172.19.2.50
  remote_user: app
  sudo: yes
  tasks:
	- name: 关闭原有pod
	  shell: kubectl delete -f /opt/kube-portal
	  ignore_errors: yes
	- name: 启动新pod
	  shell: kubectl create -f /opt/kube-portal

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