Docker Learning Note III: Docker deployment Java Web System

Docker Deployment Java Web System

1. Create a path in the root directory test/app mkdir Test && CD test&& mkdir app &&cd app

2. Copy the apache-tomcat-7.0.29.tar.gz and jdk-7u25-linux-x64.tar.gz to the app directory

3. Extract two tar.gz files

TAR-ZXVF apache-tomcat-7.0.29.tar.gz TAR-ZXVF jdk-7u25-linux-x64.tar.gz

4. Rename the extracted files

MV apache-tomcat-7.0.29 Tomcat MV Jdk-7u25-linux-x64 JDK

5. In the app directory, make the Dockerfile file to create the image

Touch Dockerfile

6.Dockerfile Document content and annotations

-------------------------------------------------------------------------Dockerfile Content------------------------------------ ---------------------------

#使用ubuntu: 14.04 as Base image
From ubuntu:14.04
#指定镜像创建者信息
Maintainer test [email protected]
#创建日期
ENV Refreshed_at 2017-2-15
#切换镜像目录, enter the/usr directory
Workdir/usr
Create a JDK directory #在/usr/to hold the JDK file
RUN mkdir JDK
Create a Tomcat directory under #在/usr/to hold Tomcat
RUN mkdir Tomcat
#切换镜像的目录至/USR/JDK
workdir/usr/jdk/

#将宿主机的jdk目录下的文件拷至镜像的/usr/jdk directory
   ADD JDK/USR/JDK
#切换镜像的目录至/usr/tomcat
   workdir/usr/tomcat
#将宿主机的tomcat目录下的文件拷至镜像的/usr/tomcat Directory
   ADD tomcat/usr/tomcat
#设置环境变量
   env java_home=/usr/jdk
   env Java_ Bin=/usr/jdk/bin
   env path= $PATH: $JAVA _home/bin
   env classpath=.: $JAVA _home/lib/ Dt.jar: $JAVA _home/lib/tools.jar
#切换工作目录到ROOT下
   workdir/usr/tomcat/webapps/root
# Delete the Tomcat default project file
   RUN rm-rf *
#将自己的xxx. War system added to the root directory under Tomcat in the Docker image
  Add webapp/usr/ Tomcat/webapps/xxx.war
#公布tomcat的8080端口
  EXPOSE 8080
#启动tomcat
  entrypoint [".. /.. /bin/catalina.sh "," Run "]

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7. Create a mirror with Dockerfile

Command: Docker build-t image name: Label Dockerfile location

Docker build-t tms:1.0. (. Represents the current directory)

8. The Java Web System is now made into an image, which is validated by the Docker images

9. Start a docker container by just building the image

Command: Docker run-d-P host mapping port: Container exposed port--name container name Mirror name/Mirror ID

-D parameter: Back-end startup mode

-P parameter: Map of host port to container port

--name parameter: An alias for the container

Docker run-d-P 8081:8080--name container name Mirror name: Mirror tag

10. Use Docker ps-a to verify

Docker Learning Note III: Docker deployment Java Web System