tomcat部署jenkins项目的实现示例


    目录
  • jenkins简介
  • Jenkins的主要特点和功能:
  • 环境准备:
  • jenkins部署
  • 使用jenkins部署项目

    jenkins简介
    ? Jenkins自动化部署可以解决集成、测试、部署等重复性的工作,工具集成的效率明显高于人工操作;并且持续集成可以更早的获取代码变更的信息,从而更早的进入测试阶段,更早的发现问题,这样解决问题的成本就会显著下降:持续集成缩短了从开发、集成、测试、部署各个环节的时间,从而也就缩短了中间出现的等待时间;持续集成也意味着开发、集成、测试、部署得以持续。
    Jenkins的主要特点和功能:
  • 自动化构建:Jenkins可以从版本控制系统(如Git、SVN等)中获取源代码,并根据预定义的构建脚本进行自动化构建。它支持各种构建工具和构建环境,如Maven、Gradle、Ant等。
  • 持续集成:Jenkins可以在代码提交到版本控制系统后自动触发构建过程,进行代码编译、单元测试、集成测试等,并生成构建报告和测试报告。它可以与各种测试框架和工具集成,如JUnit、TestNG、Selenium等。
  • 持续交付和部署:Jenkins可以将构建好的软件包自动部署到目标环境中,如开发、测试、生产环境等。它支持各种部署方式和工具,如Shell脚本、Docker、Kubernetes等。
  • 可扩展性:Jenkins提供了丰富的插件和扩展机制,可以满足不同团队和项目的需求。开发人员可以编写自定义插件,或者使用已有的插件来扩展Jenkins的功能。
  • 可视化界面:Jenkins提供了直观的Web界面,可以方便地查看和管理构建、测试和部署的状态和结果。它还提供了丰富的报表和图表,帮助团队了解项目的健康状况和性能指标。

    环境准备:
    部署jenkins前先部署tomcat,tomcat部署方法请参考:tomcat
    jenkins部署
    下载jenkins软件包
    下载地址:Jenkins download and deployment
    
[root@localhost ~]# wget https://get.jenkins.io/war-stable/2.414.2/jenkins.war
...
Length: 89532729 (85M) [application/java-archive]
Saving to: ‘jenkins.war'
jenkins.war                       100%[===========================================================>]  85.38M   299KB/s    in 3m 15s  
2023-10-11 14:07:07 (448 KB/s) - ‘jenkins.war' saved [89532729/89532729]
[root@localhost ~]# 
[root@localhost ~]# ls
anaconda-ks.cfg  apache-tomcat-9.0.65.tar.gz  jenkins.war
[root@localhost ~]# 

    将jenkins.war文件拷贝至webapps目录下
    
[root@localhost ~]# cd /usr/local/tomcat/webapps/
[root@localhost webapps]# 
[root@localhost webapps]# ls
docs  examples  host-manager  manager  ROOT
[root@localhost webapps]# 
[root@localhost webapps]# cp /root/jenkins.war .
[root@localhost webapps]# ls
docs  examples  host-manager  jenkins.war  manager  ROOT
[root@localhost webapps]# 

    编辑server.xml配置文件
    开启AJP协议,用于tomcat跟apache的效率,注意如果有多个tomcat,则改一下端口号,比如8009变8010
    
[root@localhost ~]# cd /usr/local/tomcat/conf/
[root@localhost conf]# ls
Catalina         catalina.properties  jaspic-providers.xml  logging.properties  tomcat-users.xml  web.xml
catalina.policy  context.xml          jaspic-providers.xsd  server.xml          tomcat-users.xsd
[root@localhost conf]# 
[root@localhost conf]# vim server.xml 
...
    <!-- Define an AJP 1.3 Connector on port 8009 -->
    <Connector protocol="AJP/1.3"
               address="::1"
               port="8009"
               redirectPort="8443" />
...
"server.xml" 168L, 7563C written                                                                          
[root@localhost conf]#

    重启服务,jenkins.war包会自动解压缩
    
[root@localhost webapps]# cd ..
[root@localhost tomcat]# ./bin/catalina.sh stop
Using CATALINA_BASE:   /usr/local/tomcat
Using CATALINA_HOME:   /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME:        /usr
Using CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
Using CATALINA_OPTS:   
NOTE: Picked up JDK_JAVA_OPTIONS:  --add-opens=java.base/java.lang=ALL-UNNAMED --add-opens=java.base/java.io=ALL-UNNAMED --add-opens=java.base/java.util=ALL-UNNAMED --add-opens=java.base/java.util.concurrent=ALL-UNNAMED --add-opens=java.rmi/sun.rmi.transport=ALL-UNNAMED
[root@localhost tomcat]# 
[root@localhost tomcat]# 
[root@localhost tomcat]# ./bin/catalina.sh start
Using CATALINA_BASE:   /usr/local/tomcat
Using CATALINA_HOME:   /usr/local/tomcat
Using CATALINA_TMPDIR: /usr/local/tomcat/temp
Using JRE_HOME:        /usr
Using CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar
Using CATALINA_OPTS:   
Tomcat started.
[root@localhost tomcat]# 
[root@localhost tomcat]# ss -anlt
State          Recv-Q         Send-Q                      Local Address:Port                 Peer Address:Port        Process         
LISTEN         0              128                               0.0.0.0:22                        0.0.0.0:*                           
LISTEN         0              1                      [::ffff:127.0.0.1]:8005                            *:*                           
LISTEN         0              100                                 [::1]:8009                         [::]:*                           
LISTEN         0              100                                     *:8080                            *:*                           
LISTEN         0              128                                  [::]:22                           [::]:*                           
[root@localhost tomcat]#
[root@localhost tomcat]# cd webapps/
[root@localhost webapps]# ls
docs      host-manager     jenkins.war    ROOT    examples  jenkins      manager
[root@localhost webapps]#  

    访问网页解锁 Jenkins
    
[root@localhost webapps]# cat /root/.jenkins/secrets/initialAdminPassword
d4871675ae814d8ea501b87f853b94f6
[root@localhost webapps]#

    
    选择安装推荐的插件
    
    等待安装完成
    
    创建管理员用户
    用户名,密码和邮箱自定义
    
    
    
    登录成功
    
    使用jenkins部署项目
    安装拉取项目和打包项目的工具
    
[root@localhost ~]# yum -y install git maven

    手动拉取项目测试
    
[root@localhost ~]# git clone https://gitee.com/forgotten/tomcat-java-demo.git
Cloning into 'tomcat-java-demo'...
remote: Enumerating objects: 558, done.
remote: Total 558 (delta 0), reused 0 (delta 0), pack-reused 558
Receiving objects: 100% (558/558), 5.08 MiB | 536.00 KiB/s, done.
Resolving deltas: 100% (217/217), done.
[root@localhost ~]# ls
anaconda-ks.cfg  apache-tomcat-9.0.65.tar.gz  jenkins.war  tomcat-java-demo
[root@localhost ~]# 

    将java版本更换为17
    
[root@localhost ~]# alternatives --config java

There are 2 programs which provide 'java'.

  Selection    Command
-----------------------------------------------
   1           java-17-openjdk.x86_64 (/usr/lib/jvm/java-17-openjdk-17.0.1.0.12-2.el8_5.x86_64/bin/java)
*+ 2           java-1.8.0-openjdk.x86_64 (/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.312.b07-2.el8_5.x86_64/jre/bin/java)

Enter to keep the current selection[+], or type selection number: 1
[root@localhost ~]# 

    手动打包测试
    
[root@localhost tomcat-java-demo]# mvn clean package
...
[INFO] Packaging webapp
[INFO] Assembling webapp [ly-simple-tomcat] in [/root/tomcat-java-demo/target/ly-simple-tomcat-0.0.1-SNAPSHOT]
...
[root@localhost tomcat-java-demo]# 
[root@localhost tomcat-java-demo]# cd target/
[root@localhost target]# ls
classes  generated-sources  ly-simple-tomcat-0.0.1-SNAPSHOT  ly-simple-tomcat-0.0.1-SNAPSHOT.war  maven-archiver  maven-status
[root@localhost target]# 

    创建一个流水线任务
    
    
    编写一个hello world 流水线脚本
    
    点击test,然后点击立即构建
    
    构建成功
    
    生成拉取脚本,编写流水线脚本
    
    仓库URL下面填写你要拉取的项目地址
    
    生成拉取脚本后,编写流水线脚本
    
    点击立即构建
    
    拉取成功
    
    查看流水线脚本拉取的项目
    
[root@localhost ~]# ls -a       
.   anaconda-ks.cfg              .bash_history  .bash_profile  .cshrc   .java     jenkins.war  .tcshrc   .wget-hsts
..  apache-tomcat-9.0.65.tar.gz  .bash_logout   .bashrc        .groovy  .jenkins  .m2          .viminfo
[root@localhost ~]# 
[root@localhost ~]# cd .jenkins/
[root@localhost .jenkins]# 
[root@localhost .jenkins]# ls
...
jenkins.install.UpgradeWizard.state             plugins                                                    users
jenkins.model.JenkinsLocationConfiguration.xml  queue.xml                                                  workspace
jenkins.telemetry.Correlator.xml                queue.xml.bak
[root@localhost .jenkins]# 
[root@localhost .jenkins]# cd workspace/test/
[root@localhost test]# ls
db  deploy.yaml  Dockerfile  jenkinsfile  LICENSE  pom.xml  README.md  src
[root@localhost test]# 

    安装maven打包插件
    
    
    选择需要安装的插件
    
    
    点击安装
    
    安装完成
    
    手动打包成功后编写流水线脚本
    
    流水线脚本代码
    
pipeline {
    agent any
    stages {
        stage('pull code and package') {
            steps {
                git 'https://gitee.com/forgotten/tomcat-java-demo'
                sh 'mvn clean package -Dmaven.test.skip=true'
            }
        }
        stage("deploy"){
            steps {
                sh 'cp /root/tomcat-java-demo/target/ly-simple-tomcat-0.0.1-SNAPSHOT.war /usr/local/tomcat/webapps'
                sh '/usr/local/tomcat/bin/catalina.sh stop && /usr/local/tomcat/bin/catalina.sh start'
            }
        }
    }
}

    构建成功
    
    流水线构建完成后webapps目录下可以看到拷贝和解压的ly-simple-tomcat-0.0.1-SNAPSHOT.war文件,服务重启后会自动解压war类型的文件
    
[root@localhost ~]# cd /usr/local/tomcat/webapps/
[root@localhost webapps]# 
[root@localhost webapps]# ls
docs      host-manager  jenkins.war                      ly-simple-tomcat-0.0.1-SNAPSHOT.war  ROOT
examples  jenkins       ly-simple-tomcat-0.0.1-SNAPSHOT  manager                              test
[root@localhost webapps]# 

    访问网页,在地址栏端口号后面加上 /ly-simple-tomcat-0.0.1-SNAPSHOT/
    
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