Docker系列（28）- 自定义网络

自定义网络

网络模式

bridge：桥接docker（默认，自己创建也可以使用bridge模式）
none：不配置网络
host：和宿主机共享网络
container：容器网络联通！（用的少！局限性大）

测试

# 我们直接启动的命令 --net bridge,而这个就是我们的docker0

docker run -d -P --name tomcat01 tomcat

docker run -d -P --name tomcat01 --net bridge tomcat

#docker0特点：默认，域名不能访问，--link可以打通连接

# 我们可以自定义一个网络
[root@localhost ~]# docker network create --driver bridge --subnet 192.168.0.0/16 --gateway 192.168.0.1 mynet
05ae4e10b2e876177c40a9c8aa9507169e02783934c433ad12cf4ae26713858b
[root@localhost ~]# docker network ls
NETWORK ID     NAME      DRIVER    SCOPE
11632f3244ea   bridge    bridge    local
ddcb49155b29   host      host      local
05ae4e10b2e8   mynet     bridge    local
5613165b4f9c   none      null      local

[root@localhost ~]# docker run -d -P --name tomcat-net-01 --net mynet tomcat

5e4adafd341eea41cd31589d25d7b8ee53fa33df5cc66148676a522d4a0044c6

[root@localhost ~]# docker run -d -P --name tomcat-net-02 --net mynet tomcat

6a0a608ba03d693b88a387141750a585db6beb434b4b8d799412bb6b6074cc6c

[root@localhost ~]# docker inspect mynet

[

    {

        "Name": "mynet",

        "Id": "05ae4e10b2e876177c40a9c8aa9507169e02783934c433ad12cf4ae26713858b",

        "Created": "2021-08-30T20:46:39.917882973+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": {

            "5e4adafd341eea41cd31589d25d7b8ee53fa33df5cc66148676a522d4a0044c6": {

                "Name": "tomcat-net-01",

                "EndpointID": "6b3c784f32759e45c43391a8a79a00937e0c347a4cccffc5bdcb3de6d709c6e0",

                "MacAddress": "02:42:c0:a8:00:02",

                "IPv4Address": "192.168.0.2/16",

                "IPv6Address": ""

            },

            "6a0a608ba03d693b88a387141750a585db6beb434b4b8d799412bb6b6074cc6c": {

                "Name": "tomcat-net-02",

                "EndpointID": "4d8fff4471f6164aa3cf33af8686cc737cd8b9e73d6bdc2851e04f5095395a39",

                "MacAddress": "02:42:c0:a8:00:03",

                "IPv4Address": "192.168.0.3/16",

                "IPv6Address": ""

            }

        },

        "Options": {},

        "Labels": {}

    }

]

#测试

[root@localhost ~]# docker exec -it tomcat-net-01 ping tomcat-net-02

PING tomcat-net-02 (192.168.0.3) 56(84) bytes of data.

64 bytes from tomcat-net-02.mynet (192.168.0.3): icmp_seq=1 ttl=64 time=0.096 ms

64 bytes from tomcat-net-02.mynet (192.168.0.3): icmp_seq=2 ttl=64 time=0.059 ms

[root@localhost ~]#  docker exec -it tomcat-net-02 ping tomcat-net-01

PING tomcat-net-01 (192.168.0.2) 56(84) bytes of data.

64 bytes from tomcat-net-01.mynet (192.168.0.2): icmp_seq=1 ttl=64 time=0.128 ms

64 bytes from tomcat-net-01.mynet (192.168.0.2): icmp_seq=2 ttl=64 time=0.061 ms

总结

自定义网络，不同的集群使用不同的网络，保证集群是安全和健康的

巴特西

Docker系列（28）- 自定义网络

自定义网络

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