Docker nginx V-host

💡V-host - nginx image

Container

$ sudo docker run -itd -p 8001:80 --name lb nginx
$ sudo docker run -itd -p 8002:80 --name serv-a nginx
$ sudo docker run -itd -p 8003:80 --name serv-b nginx

lb

• config/default.conf

  upstream serv {
      server serv-a:80;
      server serv-b:80;
  }
  server {
      listen 80;
  
      location /
      {
              proxy_pass http://serv;
      }
  }

  serv-a

• html set

  $ docker cp serv-a/index.html serv-a:/usr/share/nginx/html/

  serv-b

• html set

  $ docker cp serv-b/index.html serv-b:/usr/share/nginx/html/

💡V-host - Dockerfile

Dockerfile

• lb

  FROM nginx
  COPY config/default.conf /etc/nginx/conf.d/

• serv-a, serv-b

  FROM nginx
  COPY index.html /usr/share/nginx/html

Image build

• 생성하는 이미지의 Dockerfile 위치에서 명령어 실행

  $ docker build -t n-s-1:0.1.0 -f Dockerfile .
  $ docker build -t n-s-2:0.1.0 -f Dockerfile .
  $ docker build -t lb:0.1.0 -f Dockerfile .

Container

$ docker run --name serv-a -d -p 9001:80 n-s-1:0.1.0
$ docker run --name serv-b -d -p 9002:80 n-s-2:0.1.0
$ docker run --name lb -d -p 8001:80 lb:0.1.0

✅Network Connect

Create

$ docker network create DockerfileNet

Connect

$ docker network connect DockerfileNet serv-a
$ docker network connect DockerfileNet serv-b
$ docker network connect DockerfileNet lb

Connection check

$ docker network inspect DockerfileNet

📢실행결과

• lb(localhost:8001)을 호출할 때 마다 서로 다른 서버 이미지에 연결되는 것을 확인