讲实话，Jenkins 真得牛逼！只是你不会用而已（喂饭级教程）

#进入/etc/profile配置文件vim /etc/profile

export JAVA_HOME=/usr/wubin/jdk11
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$JAVA_HOME/bin:$PATH

source /etc/profile

javac

wget http://mirrors.jenkins.io/war-stable/latest/jenkins.war

nohup java -jar /usr/wubin/jenkins.war  --httpPort=8777 --httpsPort=8778 > /usr/wubin/jenkins.log 2>&1 &

# 安装$ yum install git -y# 查看版本$ git --version

# 找一个目录存放
mavencd /usr/wubin/
# 从阿里云上下载maven安装包
wget https://mirrors.aliyun.com/apache/maven/maven-3/3.6.3/binaries/apache-maven-3.6.3-bin.tar.gz
# 解压
tar -zxvf apache-maven-3.6.3-bin.tar.gz
# 当前maven的安装目录为：
/usr/wubin/apache-maven-3.6.3

vi /etc/profile
在最后面JDK配置上作出一些更改
export MAVEN_HOME=/usr/wubin/apache-maven-3.6.3
export PATH=$JAVA_HOME/bin:$MAVEN_HOME/bin:$PATH

source /etc/profilemvn -version

$ cd /usr/wubin$ mkdir repository

<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">

  <!--本地仓库-->          
  <localRepository>/data/software/repository</localRepository>

  <mirrors>
    <!--阿里云镜像-->
    <mirror>
      <id>aliyun-maven</id>
      <mirrorOf>central</mirrorOf>
      <name>aliyun maven mirror</name>
      <url>http://maven.aliyun.com/nexus/content/groups/public/</url>
    </mirror>
  </mirrors>
    ...
    ...
</settings>

# 进入到本地的项目文件夹
$ cd existing_folder
# 初始化仓库
$ git init

# 添加文件至工作区并提交
$ git add .
$ git commit -m "first commit"

# 关联Gitee远程仓库
$ git remote add origin https://gitee.com/nobug8/it235-jenkins-jar.git

# 将本地仓库推送到远程仓库的master分支，此处会弹出用户名密码交互
$ git push -u origin master

## 如果push报错可以先拉取一下，会有新的gitee生成的文件拉下来，然后重新添加提交并push
$ git pull origin master --allow-unrelated-histories
$ git add .
$ git commit -m "拉取下来合并后再次提交"
$ git push -u origin master

$ ssh-keygen -t rsa
# 3次回车

$ cat ~/.ssh/id_rsa.pub >> ~/.ssh/authorized_keys

$ chmod 700 ~/.ssh$ chmod 600 ~/.ssh/authorized_keys

# 在应用服务器（192.168.223.129）上用root用户创建/root/.ssh文件夹  mkdir -p /root/.ssh

# 在jenkins服务器（192.168.223.128）上将pub公钥文件拷贝到应用服务器的.ssh目录下

scp -p ~/.ssh/id_rsa.pub root@192.168.223.129:/root/.ssh/authorized_keys

# 在jenkins服务器的/root/目录下创建filetest文件，并拷贝到应用服务器
$ cd ~/
$ touch filetest
$ scp -p filetest root@192.168.223.129:/root/filetest
# 进入到应用服务器（192.168.223.129），检查/root目录下是否出现filetest

# 在jenkins服务器上使用ssh进行免密连接测试，成功后会出现Last Login的提示
$ ssh root@192.168.223.129
Last login: Sun Sep 20 21:53:03 2020
$ exit

#!/bin/bash

echo"部署的目录和项目名称"
DIR="/data/app"
projectName="my-boot"

echo"待部署的应用服务器，可多台"
server_ips="192.168.223.139"
for server_ip in${server_ips[@]}
do

echo"ssh连接进行备份操作"
ssh -Tq -oStrictHostKeyChecking=no root@${server_ip} <<EOF
mkdir -p $DIR/backup/${projectName}
mkdir -p $DIR/${projectName}
if [ -f "$DIR/${projectName}/${projectName}.jar" ];then
  mv $DIR/${projectName}/${projectName}.jar $DIR/backup/${projectName}/${projectName}-`date "+%Y%m%d_%H%M%S"`.jar 
fi
EOF

echo"拷贝jar包到目标服务器的tmp目录"
scp -q -oStrictHostKeyChecking=no ${WORKSPACE}/target/*.jar root@${server_ip}:/tmp/${projectName}.jar

echo"ssh远程连接进行发布操作"
ssh -q -oStrictHostKeyChecking=no root@${server_ip} <<EOF
mv /tmp/${projectName}.jar $DIR/${projectName}/${projectName}.jar

EOF

done

$ touch start.sh$ vi start.sh# 将下面代码粘贴到start.sh中

#!/bin/bash
set -e #任何命令出错就退出
set -o pipefail

APP_ID=my-boot
APP_DIR="/data/app"

nohup java -jar ${APP_DIR}/${APP_ID}/${APP_ID}.jar > release_out.log &
start_ok=false
if [[ $? = 0 ]];then
        sleep 3
        tail -n 10 release_out.log
        sleep 5
        tail -n 50 release_out.log
fi
aaa=`grep "Started" release_out.log | awk '{print $1}'`
if [[ -n "${aaa}" ]];then
    echo"Application started ok"
    exit 0
else
    echo"Application started error"
    exit 1
fi

$ touch stop.sh$ vi stop.sh# 将下面代码粘贴到stop.sh中

#!/bin/bash

APP_ID=my-boot
ps aux | grep ${APP_ID} | grep -v "grep" | awk '{print "kill -9 "$2}' | sh

sh $DIR/${projectName}/stop.shsh $DIR/${projectName}/start.sh

$ su root
# 开启防火墙9010端口
$ firewall-cmd --zone=public --add-port=9010/tcp --permanent
# 使配置生效
$ firewall-cmd --reload