今天實驗了下 docker 下的網路設定,記錄一下過程,以免後面忘記。
(系統: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 # 映象為 busybox
entrypoint: # 容器啟動後執行 top 命令,使容器沒法立即退出
- top
networks:
backend: # 使用指定的網路 backend, 並且設定網路別名為 test1,
aliases: # 設定網路別名後,可以在其他容器中 ping test1 訪問到該容器
- test1
test2:
image: busybox:latest
entrypoint:
- top
networks:
backend:
aliases:
- test2
networks:
backend:
啟動
docker-compose up -d
docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
4d05ceb2088d busybox:latest "top" 5 seconds ago Up 4 seconds ibaboss_test2_1
f4ccafa24664 busybox:latest "top" 5 seconds ago Up 4 seconds ibaboss_test1_1
docker exec -it 4d05ceb2088d /bin/sh
/ # ping test1
PING test1 (172.19.0.2): 56 data bytes
64 bytes from 172.19.0.2: seq=0 ttl=64 time=0.061 ms
64 bytes from 172.19.0.2: seq=1 ttl=64 time=0.062 ms
ping ibaboss_test1_1
PING ibaboss_test1_1 (172.19.0.2): 56 data bytes
64 bytes from 172.19.0.2: seq=0 ttl=64 time=0.045 ms
64 bytes from 172.19.0.2: seq=1 ttl=64 time=0.056 ms
64 bytes from 172.19.0.2: seq=2 ttl=64 time=0.061 ms
# 在網路中可以通過 容器名字或者網路的別名 進行通訊
Compose 的容器名稱格式是:<專案名稱><服務名稱><序號>
雖然可以自定義專案名稱、服務名稱,但是如果你想完全控制容器的命名,可以使用這個標籤指定:
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:
- backend
networks:
backend:
啟動
docker-compose -f docker-compose_v1.yml up -d
docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
132859fc77c2 busybox:latest "top" About a minute ago Up About a minute test2
cd0a78dc9bd4 busybox:latest "top" About a minute ago Up About a minute test1
docker exec -it 132859fc77c2 ping test1
PING test1 (172.19.0.2): 56 data bytes
64 bytes from 172.19.0.2: seq=0 ttl=64 time=0.070 ms
64 bytes from 172.19.0.2: seq=1 ttl=64 time=0.068 ms
64 bytes from 172.19.0.2: seq=2 ttl=64 time=0.059 ms