Docker自定义网络详解
作者：甜点cc
本文主要跟大家讲解了Docker中的自定义网络的相关知识，包含网关、子网地址等等，非常的详实，有需要的小伙伴可以参考下
了解 docker network
通过下面的命令来获取帮助
docker network --help
Commands: connect Connect a container to a network create Create a network disconnect Disconnect a container from a network inspect Display detailed information on one or more networks ls List networks prune Remove all unused networks rm Remove one or more networks
docker network create --help
Options:
--attachable Enable manual container attachment
--aux-address map Auxiliary IPv4 or IPv6 addresses used by Network driver (default map[])
--config-from string The network from which to copy the configuration
--config-only Create a configuration only network
-d, --driver string Driver to manage the Network (default "bridge")
--gateway strings IPv4 or IPv6 Gateway for the master subnet # 网关
--ingress Create swarm routing-mesh network
--internal Restrict external access to the network
--ip-range strings Allocate container ip from a sub-range
--ipam-driver string IP Address Management Driver (default "default")
--ipam-opt map Set IPAM driver specific options (default map[])
--ipv6 Enable IPv6 networking
--label list Set metadata on a network
-o, --opt map Set driver specific options (default map[])
--scope string Control the network's scope
--subnet strings Subnet in CIDR format that represents a network segment #子网
创建网络
- --driver bridge 网络类型，默认bridge网桥
- --subnet 192.168.0.0/16 子网
- --gateway 192.168.0.1 网关
创建 mynet 网络
docker network create --driver bridge --subnet 192.168.0.0/16 --gateway 192.168.0.1 mynet 0096a971fd2c66400e53cbae5e53eceedc2f90d5685917e9534640a3535c0ef1
查看网卡
[root@--- ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether 00:16:3e:0a:00:34 brd ff:ff:ff:ff:ff:ff
inet 172.31.81.32/20 brd 172.31.95.255 scope global dynamic eth0
valid_lft 291870572sec preferred_lft 291870572sec
3: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:a4:2f:c5:62 brd ff:ff:ff:ff:ff:ff
inet 172.17.0.1/16 brd 172.17.255.255 scope global docker0
valid_lft forever preferred_lft forever
140: br-799426d70aa2: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:7f:01:1d:00 brd ff:ff:ff:ff:ff:ff
inet 172.18.0.1/16 brd 172.18.255.255 scope global br-799426d70aa2 # test-network
valid_lft forever preferred_lft forever
176: br-0096a971fd2c: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default
link/ether 02:42:d9:14:c1:d3 brd ff:ff:ff:ff:ff:ff
inet 192.168.0.1/16 brd 192.168.255.255 scope global br-0096a971fd2c # mynet
valid_lft forever preferred_lft forever
查看网络
[root@--- ~]# docker network ls NETWORK ID NAME DRIVER SCOPE feafa30d4051 bridge bridge local e8bf4fced9e2 host host local 0096a971fd2c mynet bridge local # 自定义bridge网桥 6263db0933b9 none null local 799426d70aa2 test-network bridge local
查看 mynet 网络详细信息
[root@--- ~]# docker network inspect 0096a971fd2c
[
{
"Name": "mynet",
"Id": "0096a971fd2c66400e53cbae5e53eceedc2f90d5685917e9534640a3535c0ef1",
"Created": "2021-10-04T10:18:09.113847736+08:00",
"Scope": "local",
"Driver": "bridge", # mynet 网络类型
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": {},
"Config": [
{
"Subnet": "192.168.0.0/16", # mynet 子网
"Gateway": "192.168.0.1" # mynet 网关
}
]
},
"Internal": false,
"Attachable": false,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {},
"Options": {},
"Labels": {}
}
]
启动容器，并加入mynet网络
启动 mynet-centos01 , mynet-tomcat01 并加入mynet网络
[root@--- ~]# docker run -it -P --name mynet-tomcat01 --net mynet tomcat [root@--- ~]# docker run -it -P --name mynet-centos01 --net mynet centos
查看mynet网桥信息
[root@--- ~]# docker network inspect 0096
[
{
"Name": "mynet",
"Id": "0096a971fd2c66400e53cbae5e53eceedc2f90d5685917e9534640a3535c0ef1",
"Created": "2021-10-04T10:18:09.113847736+08:00",
"Scope": "local",
"Driver": "bridge",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": {},
"Config": [
{
"Subnet": "192.168.0.0/16",
"Gateway": "192.168.0.1"
}
]
},
"Internal": false,
"Attachable": false,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"2fac920eebd505794c4a27ef4efdf531d32805e8663bded93a473bd28236bc27": {
"Name": "mynet-centos01",
"EndpointID": "3aff0752e641651a446ec490faa000812417855739086b2edb584ac2a95a26dd",
"MacAddress": "02:42:c0:a8:00:02",
"IPv4Address": "192.168.0.2/16",
"IPv6Address": ""
},
"3dceda051252b6970fe2156bac7710ba6489a97aac68c49b1c85a2f130d0556f": {
"Name": "mynet-tomcat01",
"EndpointID": "9f52b19493d35c48fe9b33a319de5dbe54c50de1a5d049103cb4e39bfe645f1b",
"MacAddress": "02:42:c0:a8:00:03",
"IPv4Address": "192.168.0.3/16",
"IPv6Address": ""
}
},
"Options": {},
"Labels": {}
}
]
进入 mynet-centos01 测试连接 mynet-tomcat01
# 发现通过容器ip和容器名都可以连接 [root@--- ~]# docker exec -it 2fac920eebd5 /bin/sh sh-4.4# ping sh-4.4# ping 192.168.0.3 # 通过容器ip连接 PING 192.168.0.3 (192.168.0.3) 56(84) bytes of data. 64 bytes from 192.168.0.3: icmp_seq=1 ttl=64 time=0.140 ms 64 bytes from 192.168.0.3: icmp_seq=2 ttl=64 time=0.110 ms ^C --- 192.168.0.3 ping statistics --- 4 packets transmitted, 4 received, 0% packet loss, time 3000ms rtt min/avg/max/mdev = 0.110/0.121/0.140/0.016 ms sh-4.4# ping mynet-tomcat01 # 通过容器名连接 PING mynet-tomcat01 (192.168.0.3) 56(84) bytes of data. 64 bytes from mynet-tomcat01.mynet (192.168.0.3): icmp_seq=1 ttl=64 time=0.078 ms 64 bytes from mynet-tomcat01.mynet (192.168.0.3): icmp_seq=2 ttl=64 time=0.131 ms ^C --- mynet-tomcat01 ping statistics --- 3 packets transmitted, 3 received, 0% packet loss, time 2001ms rtt min/avg/max/mdev = 0.078/0.110/0.131/0.026 ms sh-4.4#
结论
在同一网络下的容器，发现通过容器ip和容器名都可以连接
思考问题：
其它网络下的容器可以直接访问mynet网络下的容器吗？
答案：不可以
解决方法： 让别的网络下的容器加入到
mynet网络下
到此这篇关于Docker自定义网络详解的文章就介绍到这了,更多相关Docker自定义网络内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！