今天实验了下 docker 下的网络设置，记录一下过程，以免后面忘记。
(系统：Centos 7.4 ，docker 版本：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:启动
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 seconds ago ??????Up 4 seconds ???????????????????????????ibaboss_test1_1docker exec -it 4d05ceb2088d /bin/sh/ # ping test1PING test1 (172.19.0.2): 56 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): 56 data bytes64 bytes from 172.19.0.2: seq=0 ttl=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# 在网络中可以通过 容器名字或者网络的别名 进行通信Compose 的容器名称格式是：<项目名称><服务名称><序号>
虽然可以自定义项目名称、服务名称，但是如果你想完全控制容器的命名，可以使用这个标签指定：
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:启动
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 msDocker-compose networks 的例子
原文地址：https://www.cnblogs.com/klvchen/p/9243312.html