我在默认的docker bridge网络上运行了两个容器。守护进程为他们分配一个"随意" ip在特定范围内。
network_mode: bridge -> 172.17.0.X
如何通过别名或名称相互联系?
答案 0 :(得分:1)
让以下容器运行基本映像Ubuntu:16.04:
$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
2461f410228b ubuntu:16.04 "/bin/bash" 20 minutes ago Up 20 minutes competent_shockley
6da9d8196637 ubuntu:16.04 "/bin/bash" 21 minutes ago Up 21 minutes hungry_mccarthy
Docker默认网络,了解有关默认网络的详情,请参阅here:
$ docker network ls
NETWORK ID NAME DRIVER SCOPE
f83800356529 bridge bridge local
8169b2246500 host host local
b61e4f39c0ec none null local
让我们使用docker inspect
找出容器的IP地址:
$ docker inspect 2461f410228b | grep IPAddress
"SecondaryIPAddresses": null,
"IPAddress": "172.18.0.3",
"IPAddress": "172.18.0.3",
$ docker inspect 6da9d8196637 | grep IPAddress
"SecondaryIPAddresses": null,
"IPAddress": "172.18.0.2",
默认情况下,在BRIDGE网络中启动的容器将能够访问在同一网络中启动的其他容器。
root@2461f410228b:/# ping 172.18.0.2
PING 172.18.0.2 (172.18.0.2) 56(84) bytes of data.
64 bytes from 172.18.0.2: icmp_seq=1 ttl=64 time=0.051 ms
当您正在寻找使用名称/别名到达其他容器时,请在文件/ etc / hosts中添加目标容器信息以解析DNS:
root@2461f410228b:/# cat /etc/hosts
127.0.0.1 localhost
::1 localhost ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
172.18.0.3 2461f410228b
172.18.0.2 docker2
现在尝试使用主机名
到达目标容器root@2461f410228b:/# ping docker2
PING docker2 (172.18.0.2) 56(84) bytes of data.
64 bytes from docker2 (172.18.0.2): icmp_seq=1 ttl=64 time=0.077 ms
我相信这可能在某种程度上有所帮助。