环境准备

• Git: 安装部署使用略。
• Jenkins: 2.46.2版本安装部署略（修改jenkins执行用户为root，省得配置权限）
• JDK: 安装部署略。
• Maven: 安装部署略。
• 服务器免密登陆

Jenkinsfile文件编写

node {

   def mvnHome

   def workspace = pwd()

   stage('Preparation') { // for display purposes

      // Get some code from a GitHub repository

      git 'http://192.168.161.118:8080/git/demo.git'

      // Get the Maven tool.

      // ** NOTE: This 'M3' Maven tool must be configured

      // ** in the global configuration.

      mvnHome = tool 'M3'

   }

   stage('Build') {

      // Run the maven build

      if (isUnix()) {

         sh "'${mvnHome}/bin/mvn' -Dmaven.test.failure.ignore clean package"

      } else {

         bat(/"${mvnHome}\bin\mvn" -Dmaven.test.failure.ignore clean package/)

      }

   }

   stage('Deploy') {

      sh "'/scripts/deploy.sh' ${workspace} deploy"

   }

}

Jenkinsfile文件就放在你自己的Git仓库的更目录! 如图：

在Jenkins中创建Pipeline项目

   如上3图，3步，jenkins的pipeline项目创建完成。

编写部署Shell脚本

#!/bin/bash

#集群IP列表，多个用空格分开

#NODE_LIST="192.168.161.118 192.168.161.117"

NODE_LIST="192.168.161.245"

#应用部署到的远程服务器目录

REMOTE_DIR="/home/project"

#需要部署的项目名称（需和maven的project名一样,多个用空格分开）

#NEED_DEPLOY_PROJECT="user-server user-mgr info-mgr"

NEED_DEPLOY_PROJECT="user-mgr"

# Date/Time Veriables

LOG_DATE='date "+%Y-%m-%d"'

LOG_TIME='date "+%H:%M:%S"'

CDATE=$(date "+%Y%m%d")

CTIME=$(date "+%H%M%S")

#Shell Env

SHELL_NAME="deploy.sh"

SHELL_DIR="/deploy/log"

SHELL_LOG="${SHELL_DIR}/${SHELL_NAME}.log"

#Code Env

JAR_DIR="/deploy/jar"

CONFIG_DIR="/deploy/config"

LOCK_FILE="/tmp/deploy.lock"

usage(){

    echo  $"Usage: $0 [projectJarPath] [ deploy | rollback ]"

}

init() {

    create_dir $SHELL_DIR;

    create_dir $JAR_DIR;

    create_dir $CONFIG_DIR;

}

create_dir() {

   if [ ! -d $1 ]; then

       mkdir -p $1

   fi

}

shell_lock(){

    touch ${LOCK_FILE}

}

shell_unlock(){

    rm -f ${LOCK_FILE}

}

write_log(){

    LOGINFO=$1

    echo "`eval ${LOG_DATE}` `eval ${LOG_TIME}` : ${SHELL_NAME} : ${LOGINFO}"|tee -a ${SHELL_LOG}

}

#拷贝jenkins的工作空间构建的jar包到特定目录，备份，为以后回滚等等操作

copy_jar() {

    TARGET_DIR=${JAR_DIR}/${CDATE}${CTIME}

    write_log "Copy jenkins workspace jar file to ${TARGET_DIR}"

    mkdir -p $TARGET_DIR

    for project in $NEED_DEPLOY_PROJECT;do

      mkdir -p $TARGET_DIR/${project}

      find $1 -name ${project}*.jar -exec cp {} $TARGET_DIR/${project}/ \;

    done

}

#拷贝应用的jar包到远程服务器

scp_jar(){

    SOURCE_DIR=${JAR_DIR}/${CDATE}${CTIME}

    write_log "Scp jar file to remote machine..."

    for node in $NODE_LIST;do

      scp -r ${SOURCE_DIR}/* $node:${REMOTE_DIR}

      write_log "Scp to ${node} complete."

    done

}

# 杀掉远程服务器上正在运行的项目

cluster_node_remove(){

    write_log "Kill all runing project on the cluster..."

    for project in $NEED_DEPLOY_PROJECT;do

      for node in $NODE_LIST;do

        pid=$(ssh $node "ps aux|grep ${project}|grep -v grep|awk '{print $2}'"|awk '{print $2}')

        if [ ! -n "$pid" ]; then

      write_log "${project} is not runing..."

    else

          ssh $node "kill -9 $pid"

      write_log "Killed ${project} at ${node}..."

    fi

      done

    done

}

#在远程服务器上启动项目

cluster_deploy(){

    write_log "Up all project on the cluster..."

    for project in $NEED_DEPLOY_PROJECT;do

      for node in $NODE_LIST;do

        ssh $node "cd ${REMOTE_DIR}/${project};nohup java -jar ${project}*.jar >/dev/null 2>&1 &"

    write_log "Up ${project} on $node complete..."

      done

    done

}

#回滚（暂未实现）

rollback(){

    echo rollback

}

#入口

main(){

    if [ -f ${LOCK_FILE} ];then

        write_log "Deploy is running"  && exit;

    fi

    WORKSPACE=$1

    DEPLOY_METHOD=$2

    init;

    case $DEPLOY_METHOD in

    deploy)

        shell_lock;

        copy_jar $WORKSPACE;

        scp_jar;

        cluster_node_remove;

        cluster_deploy;

        shell_unlock;

        ;;

    rollback)

        shell_lock;

        rollback;

        shell_unlock;

        ;;

    *)

        usage;

    esac

}

main $1 $2

PS: deploy.sh放在/scripts目录，和JenkinsFile中写的路径一致就好

运行看效果

 部署成功。。。  Jenkins的Console Output也都打印成功。  浏览器访问部署的应用也一切正常。完事！

PS：本实践适合小型集群部署。（经验有限，欢迎大神指导）