Docker Demo

Docker

需求

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利用docker运行两个服务，并用nginx负载均衡

1.利用DockerFile创建两个镜像

创建blog-jar镜像

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FROM java

COPY ./blog-0.0.1-SNAPSHOT.jar blog-0.0.1-SNAPSHOT.jar

CMD java -jar blog-0.0.1-SNAPSHOT.jar

创建blog-war镜像

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FROM tomcat

WORKDIR /usr/local/tomcat/webapps/

COPY ./blog-0.0.1-SNAPSHOT.war .

RUN unzip blog-0.0.1-SNAPSHOT.war

WORKDIR /usr/local/tomcat

EXPOSE 8080

nginx配置文件

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user  nginx;
worker_processes  1;

events {
    worker_connections  1024;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

    sendfile        on;

    keepalive_timeout  65;

    upstream hashserver{
        ip_hash;
        server 47.98.131.180:8090;
        server 47.98.131.180:9090;
    }
    server {
        listen       80;
        server_name  47.98.131.180;
        location /TestWeb {
          root  /usr/share/nginx/wwwroot/;
          index index.html index.htm;
        }
        location /blog-0.0.1-SNAPSHOT {
          proxy_pass http://hashserver;
        }

    }

}

2.利用docker-compose打包运行镜像

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version: '3.1'
services:
  blogwar:
    image: "blog-war"
    container_name: blog-war
    build:
      context: .
      dockerfile: DockerfileWar
    ports:
      - 8090:8080

  blogjar:
    image: "blog-jar"
    container_name: blog-jar
    build:
      context: .
      dockerfile: DockerfileJar
    ports:
      - 9090:8080

  nginx:
    restart: always
    image: nginx
    container_name: nginx
    ports:
      - 81:80
    volumes:
      - ../nginx/conf/nginx.conf:/etc/nginx/nginx.conf
	  - ../nginx/wwwroot:/usr/share/nginx/wwwroot

3.使用docker-compose运行容器

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docker-compose up -d //守护态运行