制作tomcat容器的底包镜像

下载并配置

[root@node7-200 ~]# cd /opt/src/
[root@node7-200 src]# wget https://mirrors.tuna.tsinghua.edu.cn/apache/tomcat/tomcat-8/v8.5.70/bin/apache-tomcat-8.5.70.tar.gz
[root@node7-200 src]# mkdir /data/dockerfile/tomcat
[root@node7-200 src]# tar xvf apache-tomcat-8.5.70.tar.gz -C /data/dockerfile/tomcat/
[root@node7-200 src]# cd /data/dockerfile/tomcat/
[root@node7-200 tomcat]# vim apache-tomcat-8.5.70/conf/logging.properties

删掉3manager，4host-manager的handlers，并注释掉相关的
handlers = 1catalina.org.apache.juli.AsyncFileHandler, 2localhost.org.apache.juli.AsyncFileHandler,  java.util.logging.ConsoleHandler
#3manager.org.apache.juli.AsyncFileHandler.level = FINE
#3manager.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
#3manager.org.apache.juli.AsyncFileHandler.prefix = manager.
#3manager.org.apache.juli.AsyncFileHandler.encoding = UTF-8

#4host-manager.org.apache.juli.AsyncFileHandler.level = FINE
#4host-manager.org.apache.juli.AsyncFileHandler.directory = ${catalina.base}/logs
#4host-manager.org.apache.juli.AsyncFileHandler.prefix = host-manager.
#4host-manager.org.apache.juli.AsyncFileHandler.encoding = UTF-8
日志级别改成INFO
1catalina.org.apache.juli.AsyncFileHandler.level = INFO
2localhost.org.apache.juli.AsyncFileHandler.level = INFO
java.util.logging.ConsoleHandler.level = INFO

准备Dockerfile

[root@node7-200 tomcat]#
[root@node7-200 tomcat]# cat Dockerfile

From harbor.od.com/public/jre:8u112
RUN /bin/cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime &&\ 
    echo 'Asia/Shanghai' >/etc/timezone
ENV CATALINA_HOME /opt/tomcat
ENV LANG zh_CN.UTF-8
ADD apache-tomcat-8.5.70/ /opt/tomcat
ADD config.yml /opt/prom/config.yml
ADD jmx_javaagent-0.3.1.jar /opt/prom/jmx_javaagent-0.3.1.jar
WORKDIR /opt/tomcat
ADD entrypoint.sh /entrypoint.sh
CMD ["/entrypoint.sh"]

[root@node7-200 tomcat]# vi config.yml

---
rules:
  - pattern: '-*'

[root@node7-200 tomcat]# wget https://repo1.maven.org/maven2/io/prometheus/jmx/jmx_prometheus_javaagent/0.3.1/jmx_prometheus_javaagent-0.3.1.jar -O jmx_javaagent-0.3.1.jar
[root@node7-200 tomcat]# vi entrypoint.sh

#!/bin/bash
M_OPTS="-Duser.timezone=Asia/Shanghai -javaagent:/opt/prom/jmx_javaagent-0.3.1.jar=$(hostname -i):${M_PORT:-"12346"}:/opt/prom/config.yml"
C_OPTS=${C_OPTS}
MIN_HEAP=${MIN_HEAP:-"128m"}
MAX_HEAP=${MAX_HEAP:-"128m"}
JAVA_OPTS=${JAVA_OPTS:-"-Xmn384m -Xss256k -Duser.timezone=GMT+08  -XX:+DisableExplicitGC -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:+CMSParallelRemarkEnabled -XX:+UseCMSCompactAtFullCollection -XX:CMSFullGCsBeforeCompaction=0 -XX:+CMSClassUnloadingEnabled -XX:LargePageSizeInBytes=128m -XX:+UseFastAccessorMethods -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=80 -XX:SoftRefLRUPolicyMSPerMB=0 -XX:+PrintClassHistogram  -Dfile.encoding=UTF8 -Dsun.jnu.encoding=UTF8"}
CATALINA_OPTS="${CATALINA_OPTS}"
JAVA_OPTS="${M_OPTS} ${C_OPTS} -Xms${MIN_HEAP} -Xmx${MAX_HEAP} ${JAVA_OPTS}"
sed -i -e "1a\JAVA_OPTS=\"$JAVA_OPTS\"" -e "1a\CATALINA_OPTS=\"$CATALINA_OPTS\"" /opt/tomcat/bin/catalina.sh
cd /opt/tomcat && /opt/tomcat/bin/catalina.sh run 2>&1 >> /opt/tomcat/logs/stdout.log

[root@node7-200 tomcat]# chmod u+x entrypoint.sh
[root@node7-200 tomcat]# docker build . -t harbor.od.com/base/tomcat:v8.5.70
[root@node7-200 tomcat]# docker push harbor.od.com/base/tomcat:v8.5.70

使用Jenkins持续构建

改造下dubbo-demo-web项目，使用Jenkins进行CI

配置New job

create new jobs -->Enter an item name

tomcat-demo

Pipeline -> OK

Discard old builds
Days to keep builds : 3
Max # of builds to keep : 30

This project is parameterized

Add Parameter -> String Parameter
Name : app_name
Default Value :
Description : project name. e.g: tomcat-demo

Add Parameter -> String Parameter
Name : image_name
Default Value :
Description : project docker image name. e.g: app/dubbo-demo-service

Add Parameter -> String Parameter
Name : git_repo
Default Value :
Description : project git repository.

Add Parameter -> String Parameter
Name : git_ver
Default Value :
Description : git commit id of the project.

Add Parameter -> String Parameter
Name : add_tag
Default Value :
Description : project docker image tag, date_timestamp recommended. e.g: 190117_1920

Add Parameter -> String Parameter
Name : mvn_dir
Default Value : ./
Description : project maven directory. e.g: ./

Add Parameter -> String Parameter
Name : target_dir
Default Value : ./target
Description : the relative path of target file such as .jar or .war package. e.g: ./dubbo-server/target

Add Parameter -> String Parameter
Name : mvn_cmd
Default Value : mvn clean package -Dmaven.test.skip=true
Description : maven command. e.g: mvn clean package -e -q -Dmaven.test.skip=true

Add Parameter -> Choice Parameter
Name : base_image
Default Value :
base/tomcat:v7.0.94
base/tomcat:v8.5.70
base/tomcat:v9.0.17
Description : project base image list in harbor.od.com.

Add Parameter -> Choice Parameter
Name : maven
Default Value :
3.6.1-8u232
3.2.5-6u025
2.2.1-6u025
Description : different maven edition.

Add Parameter -> String Parameter
Name : root_url
Default Value : ROOT
Description : webapp dir

Pipeline Script

pipeline {
    
  agent any 
    stages {
    
    stage('pull') {
     //get project code from repo 
      steps {
    
        sh "git clone ${params.git_repo} ${params.app_name}/${env.BUILD_NUMBER} && cd ${params.app_name}/${env.BUILD_NUMBER} && git checkout ${params.git_ver}"
        }
    }
    stage('build') {
     //exec mvn cmd
      steps {
    
        sh "cd ${params.app_name}/${env.BUILD_NUMBER}  && /var/jenkins_home/maven-${params.maven}/bin/${params.mvn_cmd}"
      }
    }
    stage('unzip') {
     //unzip  target/*.war -c target/project_dir
      steps {
    
        sh "cd ${params.app_name}/${env.BUILD_NUMBER} && cd ${params.target_dir} && mkdir project_dir && unzip *.war -d ./project_dir"
      }
    }
    stage('image') {
     //build image and push to registry
      steps {
    
        writeFile file: "${params.app_name}/${env.BUILD_NUMBER}/Dockerfile", text: """FROM harbor.od.com/${params.base_image}
ADD ${params.target_dir}/project_dir /opt/tomcat/webapps/${params.root_url}"""
        sh "cd  ${params.app_name}/${env.BUILD_NUMBER} && docker build -t harbor.od.com/${params.image_name}:${params.git_ver}_${params.add_tag} . && docker push harbor.od.com/${params.image_name}:${params.git_ver}_${params.add_tag}"
      }
    }
  }
}

构建tomcat-demo项目

点Build with Parameters
依次填入/选择：

app_name:       tomcat-demo
image_name:     app/dubbo-demo-web
git_repo:       [email protected]
git_ver:        tomcat
add_tag:        210831_2200
mvn_dir:        ./
target_dir:     ./dubbo-client/target
mvn_cmd:        mvn clean package -Dmaven.test.skip=true
base_image:     base/tomcat:v8.5.70
maven:          3.6.1-8u232
root_url:       ROOT

点击Build进行构建，等待构建完成。
完成后检查harbor仓库内可以看到镜像 app/dubbo-demo-web:tomcat_210831_2200

发布tomcat-demo

dashboard上修改资源配置清单镜像，重启pod