Jenkins使用pipeline部署服务到远程服务器
阅读原文时间:2023年07月08日阅读:4

写这篇文章是对之前搭建Jenkins做的修改和完善,让jenkins更好的为我们服务

使用过程中遇到的问题:
  为方便部署,打算将jenkins用到的jdk11、maven、gradle工具下载下来(方便以后部署使用),然后挂载到jenkins容器内部
  在使用maven打包服务过程中,发现每次构建都要重新下载maven依赖,耗时间耗内存,将jenkins容器内的maven仓库做持久化存储
  docker部署jenkins一般是使用jenkins/jenkins:lts-jdk11稳定版镜像,如出现插件下载失败,版本太老,可将容器内jenkins.war替换成最新版
  容器时间和宿主机时间同步
  docker启动容器限制内存策略。如果不限制会把内存都吃掉。
  jenkins构建项目的数据持久化存储

最终的docker搭建jenkins脚本就变成:

docker run --name jenkins -p 8081:8080 -p 50000:50000 \
-u root --privileged=true -m 1G --memory-swap=3G \
-v /home/docker/server/jenkins/data:/var/jenkins_home \
-v /var/run/docker.sock:/var/run/docker.sock \
-v /usr/bin/docker:/usr/bin/docker \
-v /home/docker/server/jenkins/m2:/root/.m2 \
-v /home/docker/server/jenkins/gradle:/root/.gradle \
-v /home/docker/server/jenkins/pack/apache-maven-3.5.4:/usr/local/maven \
-v /home/docker/server/jenkins/pack/gradle6.4:/usr/local/gradle \
-v /home/docker/server/jenkins/pack/jdk1.8.0_171:/usr/local/jdk \
-v /home/docker/server/jenkins/pack/jdk-11.0.9:/usr/local/jdk11 \
-v /etc/localtime:/etc/localtime \
-d jenkins/jenkins:lts-jdk11

  然后访问jenkins,安装插件:

    Locale        汉化插件(如汉化不完全,下载此插件)
    Maven Integration  构建maven项目插件
    Publish over SSH    使用ssh免密登录到目标服务器
    Deploy to container 用于部署war程序到tomcat中
    git parameter    选择指定分支进行构建的功能
    pipeline       流水线脚本
    Pipeline Stage View Plugin  构建过程图示

  配置jdk、maven、gradle环境变量

  配置应用服务器地址及账号:

    系统管理——>系统配置——> Publish over SSH

    

新建流水线任务
进入任务配置—参数配置—git参数,选择代码分支
流水线语法—选择sshPublisher: Send build artifacts over SSH

  点击生成流水线脚本,复制到任务的流水线脚本中

完整的流水线脚本如下:

#!/usr/bin/env groovy

def desc_ip = "10.249.29.22"
def desc_path = "/server/temp"
def app_name = "ll-heat"
def app_file = "${app_name}-0.0.1-SNAPSHOT.jar"
def install_path = "/server/${app_name}"
def target_path = "target/"
def target_file = "target/${app_file}"
def log_file = "${app_name}.log"
def git_address = "https://git.ecashback.com.cn/zhenhongxue/ll-heat.git"
def git_auth = "fe896e04-3743-4931-83f8-32d716461388"
def JAVA_OPTS = "-Xms128m -Xmx256m -Xmn64m -Dfile.encoding=UTF8 -Dspring.profiles.active=test"

pipeline {
agent any

stages {
stage('拉取代码') {
steps {
checkout([$class: 'GitSCM', branches: [[name: '${branch}']], userRemoteConfigs: [[credentialsId: "${git_auth}", url: "${git_address}"]]])
}
}

stage('代码编译') {  
  steps {  
    sh  """  
        pwd  
        JAVA\_HOME=/usr/local/jdk  
        PATH=$JAVA\_HOME/bin:/usr/local/maven/bin:$PATH  
        mvn clean package -Dmaven.test.skip=true  
        """  
  }  
}

stage('远程启动服务') {  
  steps {  
    sshPublisher(publishers: \[sshPublisherDesc(configName: "${desc\_ip}", transfers: \[sshTransfer(cleanRemote: false, excludes: '', execCommand:  
    """  
    cd ${install\_path}  
    pwd  
    ps -ef | grep ll-heat-0.0.1-SNAPSHOT.jar | grep -v grep |awk '{print \\$2}' |xargs kill -9  
    mv ${desc\_path}/${app\_file} ./  
    java -jar ${JAVA\_OPTS} ${app\_file} >${log\_file} &  
    """, execTimeout: 120000, flatten: false, makeEmptyDirs: false, noDefaultExcludes: false, patternSeparator: '\[, \]+', remoteDirectory: "${desc\_path}", remoteDirectorySDF: false, removePrefix: "${target\_path}", sourceFiles: "${target\_file}")\], usePromotionTimestamp: false, useWorkspaceInPromotion: false, verbose: true)\])  
  }  
}  

}
} 

pipeline脚本需要注意:变量的使用需要加${},如果是在pipeline语法中生成的语句,变量的使用需要加双引号"${}"

  脚本写完后会提示哪里有错误需要怎么改,要注意特殊字符需要转义处理,如'{print \$2}'需要转义

构建过程中遇到的错误:

1、SSH出错:IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that a host key has just been changed.
The fingerprint for the ECDSA key sent by the remote host is
SHA256:uLW/iHik7jxKZ6IRgRV7pfWAKuBgZGxInXba1aSb8hA.
Please contact your system administrator.
Add correct host key in /home/docker/.ssh/known_hosts to get rid of this message.
Offending ECDSA key in /home/docker/.ssh/known_hosts:3
ECDSA host key for 192.168.1.22 has changed and you have requested strict checking.
Host key verification failed.

原因:控制端保存的被控制端秘钥改变,导致SSH错误
解决方案:需要删除控制端保存的秘钥,然后重新SSH登录
    cat ~/.ssh/know_hosts
    删除文件中对应的主机和秘钥记录
    ssh 192.168.1.22
    输入密码就可以了

2、publish over ssh传输文件数为0
  SSH: Connecting from host [test-22]
  SSH: Connecting with configuration [test-22] …
  SSH: Disconnecting configuration [test-22] …
SSH: Transferred 0 file(s)
  Build step 'Send files or execute commands over SSH' changed build result to SUCCESS
  Finished: SUCCESS
原因:源文件的位置没写对

  

解决:可以在构建日志里看到jenkins运行的位置和jar包位置

    

  

   因为jenkins运行位置是/var/jenkins_home/workspaces/ll-heat,所以源文件jar包的位置应该写target/ll-heat-0.0.1-SNAPSHOP.jar