• (10)Docker之DockerFile案例-自定义的tomcat


      1、准备工作

      创建/sluse/mydockerfile/tomcat9目录,把需要的jdk、tomcat复制到该目录下,并且在该目录创建c.txt(演示COPY命令)

    [root@localhost ~]# mkdir -p /sluse/mydockerfile/tomcat9
    [root@localhost ~]# cd /sluse/mydockerfile/tomcat9
    [root@localhost tomcat9]# touch c.txt

      2、在上面目录创建Dockerfile

    FROM centos
    MAINTAINER sl<shenlei_friend@163.com>
    #把宿主机当前上下文的c.txt拷贝到容器/usr/local/路径下
    COPY c.txt /usr/local/cincontainer.txt
    #把java与tomcat添加到容器中
    ADD jdk-8u201-linux-x64.tar.gz /usr/local/
    ADD apache-tomcat-9.0.34.tar.gz /usr/local/
    #安装vim编辑器
    RUN yum -y install vim
    #设置工作访问时候的WORKDIR路径,登录落脚点
    ENV MYPATH /usr/local
    WORKDIR $MYPATH
    #配置java与tomcat环境变量
    ENV JAVA_HOME /usr/local/jdk1.8.0_201
    ENV CLASSPATH $JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
    ENV CATALINA_HOME /usr/local/apache-tomcat-9.0.34
    ENV CATALINA_BASE /usr/local/apache-tomcat-9.0.34
    ENV PATH $PATH:$JAVA_HOME/bin:$CATALINA_HOME/lib:CATALINA_HOME/bin
    #容器运行时监听的端口
    EXPOSE 8080
    #启动时运行tomcat
    #ENTRYPOINT ["/usr/local/pppp/bin/startup.sh"]
    #CMD ["/usr/local/ppp/bin/catalina.sh","run"]
    CMD /usr/local/apache-tomcat-9.0.34/bin/startup.sh && tail -F /usr/local/apache-tomcat-9.0.34/bin/logs/catalina.out

      3、构建镜像

      没加 -f Dockerfile 会默认使用该文件

    [root@localhost tomcat9]# docker build -t sltomcat9 .

      构建完成如图:

      4、运行

    docker run -d -p 9080:8080 --name myt9 -v /slsluse/mydockerfile/tomcat9/test:/usr/local/apache-tomcat-9.0.34/webapps/test -v /slsluse/mydockerfile/tomcat9/tomcat9logs/:/usr/local/apache-tomcat-9.0.34/logs --privileged=true sltomcat9

      验证:http://192.168.7.151:9080/

      验证容器卷已创建成功:

      5、演示自定义tomcat 上发布程序

      创建一个简单的项目,test/WEB-INF/web.xml;test/a.jsp

    [root@localhost tomcat9]# cd /slsluse/mydockerfile/tomcat9/test
    [root@localhost test]# mkdir WEB-INF
    [root@localhost test]# cd WEB-INF
    [root@localhost WEB-INF]# vim web.xml
    [root@localhost WEB-INF]# cd ..
    [root@localhost test]# vim a.jsp

      web.xml

    <?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee"
             xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
             version="2.5">
             
      <display-name>test</display-name>
          
    </web-app>

      a.jsp

    <%@ page language="java" contentType="text/html; charset=utf-8" pageEncoding="utf-8"%>
    <!DOCTYPE html>
    <html>
    <head>
        <meta charset="utf-8">
        <title>展示</title>
    </head>
    <body>
    -------------welcome----------------
    <%="I am in docker tomcat self" %>
    <br>
    <br>
    <%System.out.print("docker tomcat self");%>
    </body>
    </html>

      查看容器内数据已经同步:

    docker exec 83be6cd8d052 ls -l /usr/local/apache-tomcat-9.0.34/webapps/test

      重启容器,并访问查看结果:http://192.168.7.151:9080/test/a.jsp

    docker restart 83be6cd8d052

      查看日志已经记录:

    [root@localhost tomcat9logs]# cd /slsluse/mydockerfile/tomcat9/tomcat9logs
    [root@localhost tomcat9logs]# ll
    [root@localhost tomcat9logs]# cat catalina.out

    docker exec 83be6cd8d052 cat /usr/local/apache-tomcat-9.0.34/logs/catalina.out

       在宿主机中修改a.jsp,同样不重启容器就能访问到修改的内容,如下:

      

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  • 原文地址:https://www.cnblogs.com/javasl/p/12747437.html
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