资源规划

获取镜像

# 查看可用的稳定版本
sudo docker search java
sudo docker pull java:8
sudo docker image ls |grep java

服务编排

mkdir -p /share/app
vi /share/app/docker-compose.yml

服务编排内容如下：

version: "2"
services:
  nginx:
   container_name: v-nginx
   image: nginx:1.13
   restart: always
   privileged: true
   ports:
   - 80:80
   volumes:
   - ./app:/app
   - ./nginx/conf.d:/etc/nginx/conf.d/default.conf
   networks:
            nginx-lsb:
                ipv4_address: ${nginx_lsb}
  app-1:
   restart: always
   build: ./app
   working_dir: /app
   container_name: app-1
   privileged: true
   volumes:
    - ./app:/app
   expose:
      - "8080"
   networks:
            nginx-lsb:
                ipv4_address: ${web1_addr}
   depends_on:
    - nginx
  app-2:
   restart: always
   build: ./app
   working_dir: /app
   container_name: app-2
   privileged: true
   volumes:
    - ./app:/app
   expose:
      - "8080"
   networks:
            nginx-lsb:
                ipv4_address: ${web2_addr}
   depends_on:
    - nginx
networks:
    nginx-lsb:
        driver: bridge
        ipam:
            config:
                - subnet: 192.169.0.0/16

服务配置

Φ 配置文件概览

以下配置相关文件保持与编排文件相同目录。

d app                  # app初始化配置
d     static             # 放置图片资源
-     Dockerfile         # 镜像制作文件
-     app.jar            # jar包
d nginx                # nginx初始化配置
-        conf.d             # nginx配置（反向代理、负载策略）
- .env                 # 环境变量

Φ .env

web1_addr=192.169.0.2
web2_addr=192.169.0.3
nginx_lsb=192.169.0.100

Φ Dockerfile

FROM java:8

MAINTAINER polaris <450733605@qq.com>

VOLUME /tmp
ADD app.jar app.jar
ENTRYPOINT ["java","-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]
EXPOSE 8080

Φ conf.d

upstream app {
    server app-1:8080 weight=1;
    server app-2:8080 weight=1;
}

server {
    listen 80;
    charset utf-8;
    access_log off;
    server_name app;

    location / {
        proxy_set_header Host $host:$server_port;
        proxy_set_header X-Forwarded-Host $server_name;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
        proxy_buffering off;
        proxy_pass http://app;
    }

    location /static {
        access_log   off;
        expires      30d;
        alias /app/static;
    }
}

服务构建

cd /share/app
sudo docker-compose -f docker-compose.yml build --no-cache # 不带缓存构建（只创建镜像，不会启动容器）
sudo docker-compose -f docker-compose.yml up -d  # 构建后运行
sudo docker-compose -f docker-compose.yml up --build # 跟踪方式构建，可用于调试

验证

cd /share/app
# 查看进程
sudo docker-compose -f docker-compose.yml ps
# URL请求验证
sudo curl -XGET http://192.168.0.101/index.html
# 查看日志
sudo docker logs app-1
sudo docker logs -f -t --tail=50 app-1
# 查看网络
sudo docker network ls
sudo docker inspect app-1
# 停止
sudo docker-compose -f docker-compose.yml stop
# 移除
sudo docker-compose -f docker-compose.yml down

附件

docker-compose.app.zip