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这篇文章主要为大家展示了“docker 网络如何配置”，内容简而易懂，条理清晰，希望能够帮助大家解决疑惑，下面让丸趣 TV 小编带领大家一起研究并学习一下“docker 网络如何配置”这篇文章吧。
docker 的网络 docker network
docker 有 3 个默认网络
[root@srv00 ~]# docker network ls
NETWORK ID NAME DRIVER
b891bd36a3f1 bridge bridge
739cb6a018f7 host host
d0e062995920 none null默认容器都是运行在 bridge 网络下
运行个容器测试下
[root@srv00 ~]# docker run -itd --name nw centos
5ffb7062805af03b00ecc6160a78c855a7d1b7c32bfcc14d78ce036f2df9a517
[root@srv00 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
5ffb7062805a centos /bin/bash About a minute ago Up About a minute nw–name 给容器命名, 否则 docker 自动命名.
查看 bridge 网络下的容器有哪些:
[root@srv00 ~]# docker network inspect bridge
{
Name : bridge ,
Id : b891bd36a3f12dc2bb1f4526c0fc2741c0f8ccf6011071116840b6b31f9b20ac ,
Scope : local ,
Driver : bridge ,
EnableIPv6 : false,
IPAM : {
Driver : default ,
Options : null,
Config : [
{
Subnet : 172.17.0.0/16 ,
Gateway : 172.17.42.1
}
]
},
Internal : false,
Containers : {
5ffb7062805af03b00ecc6160a78c855a7d1b7c32bfcc14d78ce036f2df9a517 : {
Name : nw ,
EndpointID : 65f410576be2d9aadb697ebb820e372ffb2073db7868ec001e87da5c8cf40d71 ,
MacAddress : 02:42:ac:11:00:02 ,
IPv4Address : 172.17.0.2/16 ,
IPv6Address :
},
616d942216ee7050ecff07ca66d2d7583d4093820e9d1448f96b417d7d779408 : {
Name : high_shockley ,
EndpointID : de09ec8b400b2724238d78ece5ff24201b7baffcdb7279809ea6b1beae5fec1d ,
MacAddress : 02:42:ac:11:00:06 ,
IPv4Address : 172.17.0.6/16 ,
IPv6Address :
},
dead20777b6c1609ab968966b3589904d44f8a12c124c178fd5cb540052cce6f : {
Name : gloomy_cray ,
EndpointID : 1ba62447dd2d89165fc7079442a2016fb1c44caa02cca7cda6bf363eec2841da ,
MacAddress : 02:42:ac:11:00:07 ,
IPv4Address : 172.17.0.7/16 ,
IPv6Address :
},
e709f66c9bdbcc20f92b804e483bb566bc4ee934fa1e2e5cdbf4759f7ac1923c : {
Name : tiny_shockley ,
EndpointID : a070387813fc17fd54ab389b4afe40c80c5dbbe42c86983a89a84a65cf32e378 ,
MacAddress : 02:42:ac:11:00:01 ,
IPv4Address : 172.17.0.1/16 ,
IPv6Address :
}
},
Options : {
com.docker.network.bridge.default_bridge : true ,
com.docker.network.bridge.enable_icc : true ,
com.docker.network.bridge.enable_ip_masquerade : true ,
com.docker.network.bridge.host_binding_ipv4 : 0.0.0.0 ,
com.docker.network.bridge.name : docker0 ,
com.docker.network.driver.mtu : 1500
},
Labels : {}
}
]可以看到刚运行的容器 nw 的 ip 是 172.17.0.2
我们可以将某个容器从网络中移除
[root@srv00 ~]# docker exec -it high_shockley /bin/bash
[root@616d942216ee /]# ping 172.17.0.2
PING 172.17.0.2 (172.17.0.2) 56(84) bytes of data.
64 bytes from 172.17.0.2: icmp_seq=1 ttl=64 time=0.100 ms
64 bytes from 172.17.0.2: icmp_seq=2 ttl=64 time=0.065 ms
--- 172.17.0.2 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.065/0.082/0.100/0.019 ms
[root@616d942216ee /]# exit
exit先进入同网络的另一个容器 ping, 可以 ping 通.
[root@srv00 ~]# docker network disconnect bridge nw
[root@srv00 ~]# docker exec -it high_shockley /bin/bash
[root@616d942216ee /]# ping 172.17.0.2
PING 172.17.0.2 (172.17.0.2) 56(84) bytes of data.
--- 172.17.0.2 ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 1999ms
[root@616d942216ee /]# exit
[root@srv00 ~]# docker network inspect bridge
...可以看到 ping 不通. 也不在 bridge 网络里了. 通过 docker inspect nw 已经没有 ip 地址了.
创建自己的 bridge network
docker 支持 两个网络驱动类型 bridge 和 overlay. bridge 是运行在统一主机上的网络.overlay 可以包括多个主机.
这里我们先创建自己的 bridge 网络
[root@srv00 ~]# docker network create -d bridge mynetwork
072dbe030461bc1f7e1bc4829017f13ade899b09b606d12dfb8b6dec496a08bf
[root@srv00 ~]# docker network ls
NETWORK ID NAME DRIVER
b891bd36a3f1 bridge bridge
739cb6a018f7 host host
072dbe030461 mynetwork bridge
d0e062995920 none null
[root@srv00 ~]# docker network inspect mynetwork
{
Name : mynetwork ,
Id : 072dbe030461bc1f7e1bc4829017f13ade899b09b606d12dfb8b6dec496a08bf ,
Scope : local ,
Driver : bridge ,
EnableIPv6 : false,
IPAM : {
Driver : default ,
Options : {},
Config : [
{
Subnet : 172.18.0.0/16 ,
Gateway : 172.18.0.1/16
}
]
},
Internal : false,
Containers : {},
Options : {},
Labels : {}
}
]mynetwork 下一个容器都没有
运行个容器在 mynetwork 下
[root@srv00 ~]# docker run -itd --net mynetwork --name nw1 centos
c5b59a1e180753301460b597b87b1608b00ebe2b8620b41b8851938c6eab8044
[root@srv00 ~]# docker network inspect mynetwork
{
Name : mynetwork ,
Id : 072dbe030461bc1f7e1bc4829017f13ade899b09b606d12dfb8b6dec496a08bf ,
Scope : local ,
Driver : bridge ,
EnableIPv6 : false,
IPAM : {
Driver : default ,
Options : {},
Config : [
{
Subnet : 172.18.0.0/16 ,
Gateway : 172.18.0.1/16
}
]
},
Internal : false,
Containers : {
c5b59a1e180753301460b597b87b1608b00ebe2b8620b41b8851938c6eab8044 : {
Name : nw1 ,
EndpointID : ed444519fd958ddd83d64f62719f485f62d284f2a647536e4f48a8128e62ad5e ,
MacAddress : 02:42:ac:12:00:02 ,
IPv4Address : 172.18.0.2/16 ,
IPv6Address :
}
},
Options : {},
Labels : {}
}
]测试下互通性 先把 nw 连到 bridge 网络
[root@srv00 ~]# docker network connect bridge nw
[root@srv00 ~]# docker exec -it nw /bin/bash
[root@5ffb7062805a /]# ping 172.18.0.2
PING 172.18.0.2 (172.18.0.2) 56(84) bytes of data.
--- 172.18.0.2 ping statistics ---
3 packets transmitted, 0 received, 100% packet loss, time 1999ms不同网络中的容器不通.
将 nw 也加入到 mynetwork
[root@srv00 ~]# docker network connect mynetwork nw
[root@srv00 ~]# docker network inspect mynetwork
[root@srv00 ~]# docker network inspect bridge可以看到 2 个网络中都有 nw
[root@srv00 ~]# docker inspect --format= {{range .NetworkSettings.Networks}}{{.IPAddress}}{{end}} nw
172.17.0.2172.18.0.3
[root@srv00 ~]# docker exec -it nw /bin/bash
[root@5ffb7062805a /]# ping 172.18.0.2 -c3
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=0.093 ms
64 bytes from 172.18.0.2: icmp_seq=2 ttl=64 time=0.057 ms
64 bytes from 172.18.0.2: icmp_seq=3 ttl=64 time=0.076 ms
--- 172.18.0.2 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 2000ms
rtt min/avg/max/mdev = 0.057/0.075/0.093/0.016 ms
[root@5ffb7062805a /]# ping 172.17.0.6 -c3
PING 172.17.0.6 (172.17.0.6) 56(84) bytes of data.
64 bytes from 172.17.0.6: icmp_seq=1 ttl=64 time=0.102 ms
64 bytes from 172.17.0.6: icmp_seq=2 ttl=64 time=0.080 ms
--- 172.17.0.6 ping statistics ---
2 packets transmitted, 2 received, 0% packet loss, time 999ms
rtt min/avg/max/mdev = 0.080/0.091/0.102/0.011 msnw 这台容器有两个 ip, 同时在两个网段中, 两个网络中的容器都可以互通.
以上是“docker 网络如何配置”这篇文章的所有内容，感谢各位的阅读！相信大家都有了一定的了解，希望分享的内容对大家有所帮助，如果还想学习更多知识，欢迎关注丸趣 TV 行业资讯频道！
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