k8s-构建jenkins-slave

1. 编写 jenkins-slave配置文件

• 编写jenkins-slave的dockerfile文件

  FROM centos:7
  LABEL maintainer jenkins-slave
  
  RUN yum install -y java-1.8.0-openjdk maven curl git libtool-ltdl-devel && \ 
      yum clean all && \
      rm -rf /var/cache/yum/* && \
      mkdir -p /usr/share/jenkins
  
  COPY slave.jar /usr/share/jenkins/slave.jar  
  COPY jenkins-slave /usr/bin/jenkins-slave
  COPY settings.xml /etc/maven/settings.xml
  RUN chmod +x /usr/bin/jenkins-slave
  
  ENTRYPOINT ["jenkins-slave"]
  
  

• 编写jenkins-slave的启动脚本

  #!/usr/bin/env sh
  
  if [ $# -eq 1 ]; then
  
  	# if `docker run` only has one arguments, we assume user is running alternate command like `bash` to inspect the image
  	exec "$@"
  
  else
  
  	# if -tunnel is not provided try env vars
  	case "$@" in
  		*"-tunnel "*) ;;
  		*)
  		if [ ! -z "$JENKINS_TUNNEL" ]; then
  			TUNNEL="-tunnel $JENKINS_TUNNEL"
  		fi ;;
  	esac
  
  	# if -workDir is not provided try env vars
  	if [ ! -z "$JENKINS_AGENT_WORKDIR" ]; then
  		case "$@" in
  			*"-workDir"*) echo "Warning: Work directory is defined twice in command-line arguments and the environment variable" ;;
  			*)
  			WORKDIR="-workDir $JENKINS_AGENT_WORKDIR" ;;
  		esac
  	fi
  
  	if [ -n "$JENKINS_URL" ]; then
  		URL="-url $JENKINS_URL"
  	fi
  
  	if [ -n "$JENKINS_NAME" ]; then
  		JENKINS_AGENT_NAME="$JENKINS_NAME"
  	fi  
  
  	if [ -z "$JNLP_PROTOCOL_OPTS" ]; then
  		echo "Warning: JnlpProtocol3 is disabled by default, use JNLP_PROTOCOL_OPTS to alter the behavior"
  		JNLP_PROTOCOL_OPTS="-Dorg.jenkinsci.remoting.engine.JnlpProtocol3.disabled=true"
  	fi
  
  	# If both required options are defined, do not pass the parameters
  	OPT_JENKINS_SECRET=""
  	if [ -n "$JENKINS_SECRET" ]; then
  		case "$@" in
  			*"${JENKINS_SECRET}"*) echo "Warning: SECRET is defined twice in command-line arguments and the environment variable" ;;
  			*)
  			OPT_JENKINS_SECRET="${JENKINS_SECRET}" ;;
  		esac
  	fi
  	
  	OPT_JENKINS_AGENT_NAME=""
  	if [ -n "$JENKINS_AGENT_NAME" ]; then
  		case "$@" in
  			*"${JENKINS_AGENT_NAME}"*) echo "Warning: AGENT_NAME is defined twice in command-line arguments and the environment variable" ;;
  			*)
  			OPT_JENKINS_AGENT_NAME="${JENKINS_AGENT_NAME}" ;;
  		esac
  	fi
  
  	#TODO: Handle the case when the command-line and Environment variable contain different values.
  	#It is fine it blows up for now since it should lead to an error anyway.
  
  	exec java $JAVA_OPTS $JNLP_PROTOCOL_OPTS -cp /usr/share/jenkins/slave.jar hudson.remoting.jnlp.Main -headless $TUNNEL $URL $WORKDIR $OPT_JENKINS_SECRET $OPT_JENKINS_AGENT_NAME "$@"
  fi
  
  

• jenkins-slave的配置文件settings.xml

  <?xml version="1.0" encoding="UTF-8"?>
  
  
  
  
  
    
  
    
  
    
  
    
    
      
    
  
    
    
      
    
  
    
    
      
  
      
    
  
    
    
      
           
        central     
        central     
        aliyun maven
        https://maven.aliyun.com/repository/public     
      
    
  
    
    
      
  
      
    
  
    
  
  
  

• 下载slave的包

2. 使用docker build构建镜像

• 执行构建命令

  root@k8s-master jenkins-slave]# docker build -t harbor.scajy.org/library/jenkins-slave:1.8 .
  

• 执行私有仓库登陆

  [root@k8s-master jenkins-slave]# docker login -u admin -p'Aa123456' harbor.scajy.org
  

• 查询镜像

  [root@k8s-master jenkins-slave]# docker images
  REPOSITORY                                                        TAG       IMAGE ID       CREATED         SIZE
  harbor.scajy.org/library/jenkins-slave                            1.8       804b32f7129d   2 minutes ago   545MB
  

• 推送镜像到harbor仓库

  [root@k8s-master jenkins-slave]# docker push harbor.scajy.org/library/jenkins-slave:1.8
  The push refers to repository [harbor.scajy.org/library/jenkins-slave]
  b828e93cff2e: Pushed 
  5c72c602436a: Pushed 
  719b9a6ac7c9: Pushed 
  d5abbc8a828f: Pushed 
  33f56046d363: Pushed 
  174f56854903: Pushed 
  1.8: digest: sha256:798282e72962a18984d3468eac8a29f7524670a2713617348226838c0d13c442 size: 1574
  

• 验证镜像上传是否成功