How to correctly deploy Tomcat and Web applications with docker

The correct deployment method is as follows:

(Learning video sharing: Programming video)

1. Download docker online

yum install -y epel-release

yum install docker-io   # 安装dockerchkconfig docker on     # 加入开机启动service docker start     # 启动docker服务

2. Install Tomcat container with docker

2.1. Find the tomcat information of the server

# docker search tomcat

2.2 Download the official image with the highest Starts

docker pull  docker.io/tomcat

2.3 View all docker images

docker images

2.4 Start tomcat

docker run -p 8081:8080 docker.io/tomcat    #  若端口被占用，可以指定容器和主机的映射端口 前者是外围访问端口：后者是容器内部端口

2.5 Start Then you can access 192.168.138.132:8080

##3. Deploy your own web reference

docker ps     # 使用以下命令来查看正在运行的容器

3.1. Upload your own war package to the host

3.2. Execute to view the address in the container comcat

docker  exec -it   3cb492a27475   /bin/bash    #中间那个是容器id（CONTAINER_ID）

3.3 Put the war The packet is thrown to the host and then thrown into the container and thrown to tomcat/webapps

docker cp NginxDemo.war 3cb492a27475 :/usr/local/tomcat/webapps

3.4. Start tomcat or restart docker restart [Container ID]

docker run -p 8081:8080 docker.io/tomcat

3.5 Check the started image

docker ps

3.6 Execute to view the projects in the container comcat

docker  exec -it   3cb492a27475   /bin/bash    #中间那个是容器id（CONTAINER_ID） cd /webapps

ls   # 即可查看到我们的项目了

3.7 A drawback of the above execution is that the project will no longer be available after the container is restarted. The following is the method 2 to start. Start by mounting

docker run -d -v /usr/docker_file/NginxDemo.war:/usr/local/tomcat/webapps/NginxDemo.war -p 8080:8080 docker.io/tomcat

3.8 The first two methods are recommended to be used in the test environment. After all, the code needs to be modified frequently. Method 3 can be used in production. It is also the method recommended by the official website

vi Dockerfile

from docker.io/tomcat:latest    #你的 tomcat的镜像MAINTAINER XXX@qq.com    #作者COPY NginxDemo.war   /usr/local/tomcat/webapps  #放置到tomcat的webapps目录下

3.8.1 Generate a new image:

docker build -t nginx-demo:v1 .

3.8.2 Start a new image

docker run -p 8080:8080 nginx-demo:v1

Others

# 基本信息查看 docker version
# 查看docker的版本号，包括客户端、服务端、依赖的Go等 docker info  
# 查看系统(docker)层面信息，包括管理的images, containers数等

Related recommendations:

docker tutorial

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