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Docker 固定IP及跨主机互通
服务器IP | 容器分配网段 | 启动容器的IP |
---|---|---|
172.16.1.128 | 172.117.0.0/24 | 172.117.0.128 |
172.16.1.129 | 172.118.0.0/24 | 172.118.0.129 |
在172.16.1.128
主机上
- 创建自定义网络:
docker network create --subnet=172.117.0.0/24 docker-br0
docker network create --subnet=172.117.0.0/24 docker-br0
查看:
[root@master ~]\# docker network ls
NETWORK ID NAME DRIVER SCOPE
afec70e77155 bridge bridge local
`a94a2946f56e bridge-test bridge local`
e72048375b94 docker-br0 bridge local
9dd2a18f0566 host host local
f553fc44b4d4 none null local
[root@master ~]\# docker network ls
NETWORK ID NAME DRIVER SCOPE
afec70e77155 bridge bridge local
`a94a2946f56e bridge-test bridge local`
e72048375b94 docker-br0 bridge local
9dd2a18f0566 host host local
f553fc44b4d4 none null local
如果想要删除自定义的网络,可以使用docker network rm docker-br0
进行删除操作
- 在自定义的网络中,任选IP地址作为容器的IP地址(即固定IP):
docker run -it --net docker-br0 --ip 172.117.0.128 busybox /bin/sh
docker run -it --net docker-br0 --ip 172.117.0.128 busybox /bin/sh
测试与主机和互联网是否可达:
/ # ping 172.16.1.128
PING 172.16.1.128 (172.16.1.128): 56 data bytes
64 bytes from 172.16.1.128: seq=0 ttl=64 time=0.726 ms
/ # ping baidu.com
PING baidu.com (39.156.69.79): 56 data bytes
64 bytes from 39.156.69.79: seq=1 ttl=127 time=22.570 ms
/ # ping 172.16.1.128
PING 172.16.1.128 (172.16.1.128): 56 data bytes
64 bytes from 172.16.1.128: seq=0 ttl=64 time=0.726 ms
/ # ping baidu.com
PING baidu.com (39.156.69.79): 56 data bytes
64 bytes from 39.156.69.79: seq=1 ttl=127 time=22.570 ms
在172.16.1.129
主机上
前面的操作和在128
主机上一样:
docker network create --subnet=172.118.0.0/24 docker-br0
docker run -it --net docker-br0 --ip 172.118.0.129 busybox /bin/sh
docker network create --subnet=172.118.0.0/24 docker-br0
docker run -it --net docker-br0 --ip 172.118.0.129 busybox /bin/sh
测试该主机的容器是否可以连通128
主机容器(显然是不能😂 ):
/ # ping 172.117.0.128
PING 172.117.0.128 (172.117.0.128): 56 data bytes
/ # ping 172.117.0.128
PING 172.117.0.128 (172.117.0.128): 56 data bytes
跨主机容器互通
在两台主机智商都添加路由规则:
# 172.16.1.128 主机
ip route add 172.118.0.0/24 via 172.16.1.129 dev ens33
# 172.16.1.129 主机
ip route add 172.117.0.0/24 via 172.16.1.128 dev ens33
# 172.16.1.128 主机
ip route add 172.118.0.0/24 via 172.16.1.129 dev ens33
# 172.16.1.129 主机
ip route add 172.117.0.0/24 via 172.16.1.128 dev ens33