利用Jenkins的Pipeline實現集羣自動化部署SpringBoot項目

環境準備

• Git: 安裝部署使用略。
• Jenkins: 2.46.2版本安裝部署略（修改jenkins執行用戶爲root，免得配置權限）
• JDK: 安裝部署略。
• Maven: 安裝部署略。
• 服務器免密登錄

Jenkinsfile文件編寫

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文件就放在你本身的Git倉庫的更目錄! 如圖：

在Jenkins中建立Pipeline項目

如上3圖，3步，jenkins的pipeline項目建立完成。

編寫部署Shell腳本

#!/bin/bash
#集羣IP列表，多個用空格分開
#NODE_LIST="192.168.161.118 192.168.161.117"
NODE_LIST="192.168.161.245"
#應用部署到的遠程服務器目錄
REMOTE_DIR="/home/project" 
#須要部署的項目名稱（需和maven的project名同樣,多個用空格分開）
#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 ${SHELL_LOG}
}
#拷貝jenkins的工做空間構建的jar包到特定目錄，備份，爲之後回滾等等操做
copy_jar() { 
    TARGET_DIR=${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 
} 
#拷貝應用的jar包到遠程服務器
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
} 
# 殺掉遠程服務器上正在運行的項目
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
} 
#在遠程服務器上啓動項目
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
} 
#回滾（暫未實現）
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目錄，和JenkinsFile中寫的路徑一致就好

運行看效果

部署成功。。。 Jenkins的Console Output也都打印成功。 瀏覽器訪問部署的應用也一切正常。完事！

PS：本實踐適合小型集羣部署。（經驗有限，歡迎大神指導）