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Jenkins集成Docker

一、配置凭证

生成令牌

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管理凭证

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添加凭证

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填写信息

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二、全局配置

docker-compose

version: '3'
services:
  jenkins:
    restart: always
    image: jenkins:latest
    container_name: jenkins
    ports:
      - '8888:8080'
      - '50000:50000'
    volumes:
      - /home/qiang/docker-compose/jenkins/data/jenkins_home:/var/jenkins_home
      - /home/qiang/docker-compose/jenkins/data/war/jenkins.war:/usr/share/jenkins/jenkins.war

查看位置

[root@6e169b02437d jenkins_home]# pwd
/home/qiang/docker-compose/jenkins/data/jenkins_home
[root@6e169b02437d jenkins_home]# mkdir -p software/maven_home
[root@6e169b02437d jenkins_home]# mkdir -p software/jdk_home

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settings.xml

<?xml version="1.0" encoding="UTF-8"?>
<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">
  <localRepository>/var/jenkins_home/software/maven_home/repository</localRepository>

  <servers>
    <server>
        <id>nexus-public</id>
        <username>admin</username>
        <password>123456</password>
    </server>
    <server>
        <id>nexus-releases</id>
        <username>admin</username>
        <password>123456</password>
    </server>
    <server>
        <id>nexus-snapshots</id>
        <username>admin</username>
        <password>123456</password>
    </server>
  </servers>

  <mirrors>
    <mirror>
        <id>nexus-public</id>
        <mirrorOf>*</mirrorOf>
        <name>Nexus Public</name>
        <url>http://192.168.8.245:8081/repository/maven-public/</url>
    </mirror>
  </mirrors>

  <profiles>
    <profile>  
        <id>jdk-1.8</id>  
        <activation>  
            <activeByDefault>true</activeByDefault>  
            <jdk>1.8</jdk>  
        </activation>  
        <properties>  
            <maven.compiler.source>1.8</maven.compiler.source>  
            <maven.compiler.target>1.8</maven.compiler.target>  
            <maven.compiler.compilerVersion>1.8</maven.compiler.compilerVersion>  
        </properties>  
    </profile>
  </profiles>
</settings>

添加配置

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三、新建任务

构建一个Maven项目

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输入项目地址和刚刚添加的凭证

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Maven执行打包命令

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保存并尝试构建一下

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构建成功

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四、远程推送

填写服务器信息

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配置推送到远程服务器

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推送成功

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五、构建镜像

开放Docker远程API

# 编辑文件
vim /etc/systemd/system/docker.service
# 修改内容
ExecStart=/usr/bin/dockerd -H unix:///var/run/docker.sock -H tcp://0.0.0.0:2375
# 重启服务
systemctl daemon-reload && systemctl restart docker
# 测试验证
docker -H 192.168.8.246:2375 images

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Jenkins链接Docker

tcp://192.168.8.248:2375

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Docker拥有的容器

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添加镜像仓库账号密码

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准备Dockerfile

# 指定基础镜像
FROM 192.168.8.247/xiaoqiangzai/openjdk:8-jre
# 作者的信息
MAINTAINER wuduoqiang
# jar包的名字
ENV jar pavilion-1.0.0.jar
# 工作的目录
ENV workDir /app/
# 进入到容器后进入到哪个目录
WORKDIR ${workDir}
# 将文件拷贝到镜像中
COPY pavilion/target/${jar} ${workDir}
# 设置时区为上海
ENV TZ=Asia/Shanghai
RUN ln -snf /usr/share/zoneinfo/$TZ /etc/localtime && echo $TZ > /etc/timezone
# 容器启动时候执行的命令
CMD ["sh","-ec","exec java -jar ${jar} --spring.profiles.active=dev -Xms256m -Xmx256m -Xmn128m"]

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构建成功

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推送成功

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六、定时删除

镜像策略

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定时任务

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七、启动服务

docker-compose

version: "3.0"
services:
  pavilion:
    image: 192.168.8.247/xiaoqiangzai/pavilion:{BUILD_ID}
    container_name: pavilion
    restart: always
    privileged: true
    ports:
      - "8080:8080"

将之前推送的jar包改成推送docker-compose

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启动脚本

echo "停止旧服务"
docker stop $(docker ps -aq -f 'name=pavilion') && docker rm $(docker ps -aq -f'name=pavilion')
echo "删掉旧镜像"
docker rmi $(docker images -aq -f 'reference=192.168.8.247/xiaoqiangzai/pavilion:*')
echo "启动新镜像"
eval sed -in 's#{BUILD_ID}#'$BUILD_ID'#' /home/qiang/jenkins/pavilion/docker-compose.yaml
rm -rf /home/qiang/jenkins/pavilion/docker-compose.yamln
docker-compose -f /home/qiang/jenkins/pavilion/docker-compose.yaml up -d

2021-08-27更新：这里的脚本有点问题，容器不存在的时候会报错，使用下面的脚本即可。

containerName='pavilion'
 
if [ `docker ps -aq -f 'name='$containerName'' | wc -l` -ge 1 ];
then
    echo '容器'$containerName'运行中,停止容器'
    docker stop $(docker ps -aq -f 'name='$containerName'') && docker rm $(docker ps -aq -f'name='$containerName'')
    echo '容器'$containerName'已停止,删旧镜像'
    docker rmi $(docker images -aq -f 'reference=192.168.8.247/xiaoqiangzai/'$containerName':*')
else
    echo '容器'$containerName'不存在,无需停止'
fi
echo "启动新镜像"
eval sed -in 's#{BUILD_ID}#'$BUILD_ID'#' /home/qiang/jenkins/pavilion/docker-compose.yaml
rm -rf /home/qiang/jenkins/pavilion/docker-compose.yamln
docker-compose -f /home/qiang/jenkins/pavilion/docker-compose.yaml up -d

构建成功

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上传成功

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部署成功

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八、自动构建

安装gitee插件

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配置代码提交自动构建触发器

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生成密钥

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添加钩子

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将URL复制进来

# 由于需要外网地址,这里使用了内网穿透
http://192.168.8.245:8888/jenkins/gitee-project/pavilion-service-dev -> https://www.xiaoqiangzai.xyz/jenkins/gitee-project/pavilion-service-dev

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测试成功

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九、常见问题

问题1：

项目启动超时，由于项目启动时间超过默认的超时时间则提示错误。

SSH: Connecting from host [4103904b7acf]
SSH: Connecting with configuration [Centos246] ...
SSH: Disconnecting configuration [Centos246] ...
ERROR: Exception when publishing, exception message [Exec timed out or was interrupted after 120,000 ms]
Build step 'Send files or execute commands over SSH' changed build result to UNSTABLE
Finished: UNSTABLE

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解决1：

修改默认的超时时间即可，默认120000毫秒，以实际情况来修改。

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