Examples of docker-compose networks

Today, we experimented with the network settings under Docker and recorded the process to avoid forgetting.
(System: Centos 7.4, docker version: 18.03.1-ce, docker-compose version 1.18.0)

cat docker-compose.yml version: ‘3‘services:   test1:    image: busybox:latest         # 镜像为 busybox    entrypoint:                   # 容器启动后执行 top 命令，使容器没法立即退出     - top    networks:      backend:          # 使用指定的网络 backend, 并且设置网络别名为 test1，        aliases:        # 设置网络别名后，可以在其他容器中 ping test1 访问到该容器          - test1  test2:    image: busybox:latest    entrypoint:     - top    networks:      backend:        aliases:          - test2networks:  backend:

Start

  docker-compose up-ddocker ps-acontainer ID IMAGE COMMAND CREATED       STATUS PORTS names4d05ceb2088d busybox:latest "top" 5 seconds ago Up 4 seconds ibaboss_test2_1f4ccafa24664 busybox:latest "top" 5 s Econds ago up 4 seconds ibaboss_test1_1docker exec-it 4d05ceb2088d/bin/sh/# ping Test1 PING test1 (172.19.0.2): Data bytes64 bytes from 172.19.0.2:seq=0 ttl=64 time=0.061 ms64 bytes from 172.19.0.2:seq=1 ttl=64 time=0.062 msping ibaboss_test1_1ping ibaboss_test1_1 (172.19.0.2): Data bytes64 bytes from 172.19.0.2:seq=0 tt l=64 time=0.045 ms64 bytes from 172.19.0.2:seq=1 ttl=64 time=0.056 ms64 bytes from 172.19.0.2:seq=2 ttl=64 time=0.061 ms # communication can be made on the network through the name of the container or the alias of the network  

Compose container name format is:< project name >< service name >< serial number >
Although you can customize the project name, the service name, but if you want to have complete control over the naming of the container, you can use this tag to specify:
Container_name:app

cat docker-compose_v1.yml version: ‘3‘services:   test1:    image: busybox:latest    entrypoint:     - top    container_name: test1    networks:     - backend  test2:    image: busybox:latest    entrypoint:     - top    container_name: test2    networks:     - backendnetworks:  backend:

Start

docker-compose -f docker-compose_v1.yml up -ddocker ps -aCONTAINER ID        IMAGE               COMMAND             CREATED              STATUS              PORTS               NAMES132859fc77c2        busybox:latest      "top"               About a minute ago   Up About a minute                       test2cd0a78dc9bd4        busybox:latest      "top"               About a minute ago   Up About a minute                       test1docker exec -it 132859fc77c2 ping test1PING test1 (172.19.0.2): 56 data bytes64 bytes from 172.19.0.2: seq=0 ttl=64 time=0.070 ms64 bytes from 172.19.0.2: seq=1 ttl=64 time=0.068 ms64 bytes from 172.19.0.2: seq=2 ttl=64 time=0.059 ms

Examples of docker-compose networks