微服务Git+Docker+Jenkins+Maven一键CI/CD持续集成部署

###一、介绍
本文介绍利用Git+Docker+Jenkins+Maven实现一键CI/CD持续集成部署，需要的软件有Git、Docker、Jenkins、Maven；Jenkins需要集成Git和Maven插件，实现代码拉取和代码打包工作；本文思路就是利用Git从Git平台拉取源代码，然后利用Maven打包，然后使用Docker构建镜像，将镜像上传到自己的DockerHubt私服，其它服务器从DockerHubt私服上拉取镜像进行部署操作；简单流程图如下：

PS:如何搭建Docker镜像私服可以参考：Docker Hub私服Registry搭建与使用
###二、Jenkin任务及配置

• 新建任务
  
• 任务名称
  
• 配置任务
  
  
  

Jenkins执行make preview命令，参照Makefile的相关内容；
###三、Makefile文件相关内容

• Makefile

TAG?=latest

default: build
build:
	mvn -DskipTests clean package
run:
	mvn spring-boot:run
image: clean build
	docker build --no-cache -t s3.ok.un-net.com:5000/oneclick/client-gateway:$(TAG) .
push: image
	docker push s3.ok.un-net.com:5000/oneclick/client-gateway:$(TAG)
rmi:
	docker  images|grep none|awk '{print $3}'|xargs docker rmi
clean:
	rm -rf ./target/

# release
scdx:
	./hack/build_scdx.sh
lndx:
	./hack/build_lndx.sh

# dev
preview: push
#注意权限问题
	chmod  a+x  ./hack/*.sh
	./hack/update_local.sh

PS：需要注意命令chmod a+x ./hack/*.sh前面是一个tab键，如果是空格，不是tab键会导致错误：命令前面是tab分割符，不能用空格，否则会出现makefile:2: *** 遗漏%分隔符 。 停止。
可以用命令vi Makefile编辑文件，然后进行 :set list操作查看

###四、Dockerfile

• 根据Dockerfile文件构建镜像

FROM tomcat:latest
#TOMCAT环境变量
ENV CATALINA_BASE:   /usr/local/tomcat \
    CATALINA_HOME:   /usr/local/tomcat \
    CATALINA_TMPDIR: /usr/local/tomcat/temp \
    JRE_HOME:        /usr

# add create user info
MAINTAINER unnet "[e-mail]"
# 将webapp下的全部删除
RUN rm -rf /usr/local/tomcat/webapps/*

#启动入口
ENTRYPOINT ["catalina.sh","run"]

COPY ./target/client-gateway-0.0.1-SNAPSHOT.war  ${CATALINA_HOME}/webapps/ROOT.war
EXPOSE 9080 8080 8090

PS：FROM tomcat:latest基础镜像不同，Dockerfile文件的内容也要相应修改，这个Dockerfile适应我配置的war包，tomcat的离线镜像包地址：链接: https://pan.baidu.com/s/1ggTE-Bf8spXVS36jswiVSg 提取码: mvpr 复制这段内容后打开百度网盘手机App，操作更方便哦

###五、其它相关的脚本文件

• ./hack/update_local.sh

#!/bin/bash

# 进入当前Shell程序的目录
cd `dirname $0`
echo  "Current Script Path: `dirname $0`"

mkdir -p /usr/local/services/client-gateway/bin

cp -rf ./scripts/*.sh /usr/local/services/client-gateway/bin

#./build_preview.sh

sh /usr/local/services/client-gateway/bin/stop.sh

#cp -rf ../target/client-gateway-1.0.0.jar /usr/local/services/client-gateway/bin

sh /usr/local/services/client-gateway/bin/start.sh

• ./hack/scripts/start.sh

#!/bin/bash

#cd `dirname $0`
#
#mkdir -p ../logs
#touch ../logs/client-gateway.log
#
#nohup java -jar /usr/local/services/client-gateway/bin/client-gateway-1.0.0.jar >>../logs/client-gateway.log 2>&1 &

ssh [e-mail] " docker pull s3.ok.un-net.com:5000/oneclick/client-gateway; docker run --name client-gateway -v /etc/localtime:/etc/localtime:ro -v /usr/local/docker/unnet-log/client-log/:/unnet-log/oneclick/ -d -p 8070:8080 s3.ok.un-net.com:5000/oneclick/client-gateway"
ssh [e-mail] " docker pull s3.ok.un-net.com:5000/oneclick/client-gateway; docker run --name client-gateway -v /etc/localtime:/etc/localtime:ro -v /usr/local/docker/unnet-log/client-log/:/unnet-log/oneclick/  -d -p 8070:8080 s3.ok.un-net.com:5000/oneclick/client-gateway"

• ./hack/scripts/stop.sh

#!/bin/bash

#ps aux | grep "/usr/local/services/client-gateway/bin/client-gateway-1.0.0.jar" | grep -v grep | awk '{print $2}' | xargs kill -9

ssh [e-mail] "docker rm -f client-gateway ; docker rmi -f s3.ok.un-net.com:5000/oneclick/client-gateway ;"
ssh [e-mail] "docker rm -f client-gateway ; docker rmi -f s3.ok.un-net.com:5000/oneclick/client-gateway ;"

PS:Git+Docker+Jenkins+Maven一键CI/CD持续集成部署记录大概内容，这样应该就可以持续集成部署了；记录备忘，后期有问题了再更新；Makefile和Dockerfile文件目录结构如图：