docker network bridge模式,默认(一)

深碍√TFBOYSˉ_ 2022-11-09 03:51 176阅读 0赞

查看docker当前创建的网络

[root@localhost claroja]# docker network ls
    NETWORK ID          NAME                DRIVER              SCOPE
    3c145f070fd7        bridge              bridge              local
    f0428b4ac8ec        host                host                local
    42c2aaaeac08        none                null                local

当创建容器时,默认都连接`bridge`局域网中,使用`docker inspect bridge`查看该模式的详细信息,`containers`为空,说明没有容器连接到此网络  
缺点是不能通过DNS访问

创建容器`test1`

[root@localhost claroja]# docker container run --name test1 -dit centos /bin/bash
    d0e15b7f6fd49f0d12d03edeffb8b6f844f722c97c78e7cba2ed4f7d8c8a89ed

创建容器`test2`

[root@localhost claroja]# docker container run --name test2 -dit centos /bin/bash
    fb6ff2267a7f6f4e7fe31be9e8d016217459c74867d0529d5ed1867b6f76acc0

进入容器`test1`

[root@localhost claroja]# docker attach test1
    [root@d0e15b7f6fd4 /]# 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
    12: eth0@if13: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
        link/ether 02:42:ac:11:00:03 brd ff:ff:ff:ff:ff:ff link-netnsid 0
        inet 172.17.0.2/16 brd 172.17.255.255 scope global eth0
           valid_lft forever preferred_lft forever

进入容器`test2`,`ping` `test1`的ip,可以ping通 说明在同一个网段里

[root@localhost claroja]# docker attach test2
    [root@fb6ff2267a7f /]# 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
    10: eth0@if11: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
        link/ether 02:42:ac:11:00:02 brd ff:ff:ff:ff:ff:ff link-netnsid 0
        inet 172.17.0.3/16 brd 172.17.255.255 scope global eth0
           valid_lft forever preferred_lft forever
    
    [root@fb6ff2267a7f /]# 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=0.062 ms
    64 bytes from 172.17.0.2: icmp_seq=2 ttl=64 time=0.051 ms

使用`docker inspect bridge`查看bridge模式下的状态,“Containers”,可查看当前容器的ip

[root@localhost claroja]# docker inspect bridge
    [
        { 
            "Name": "bridge",
            "Id": "3c145f070fd74066ccdd08e447ebe511e698efa991842d14a5514233cb53ff72",
            "Created": "2021-03-13T22:09:48.775941917-05:00",
            "Scope": "local",
            "Driver": "bridge",
            "EnableIPv6": false,
            "IPAM": { 
                "Driver": "default",
                "Options": null,
                "Config": [
                    { 
                        "Subnet": "172.17.0.0/16",
                        "Gateway": "172.17.0.1"
                    }
                ]
            },
            "Internal": false,
            "Attachable": false,
            "Ingress": false,
            "ConfigFrom": { 
                "Network": ""
            },
            "ConfigOnly": false,
            "Containers": { 
                "d0e15b7f6fd49f0d12d03edeffb8b6f844f722c97c78e7cba2ed4f7d8c8a89ed": { 
                    "Name": "test1",
                    "EndpointID": "da771a11c5fc38be893f5b8de85007cfe139c00d25f6cedc08a7d2051232d850",
                    "MacAddress": "02:42:ac:11:00:02",
                    "IPv4Address": "172.17.0.2/16",
                    "IPv6Address": ""
                },
                "fb6ff2267a7f6f4e7fe31be9e8d016217459c74867d0529d5ed1867b6f76acc0": { 
                    "Name": "test2",
                    "EndpointID": "d5bca6d5d219c132d5d93ed06fcc2330b23a7674391f1e04a4f1233d15e5db7d",
                    "MacAddress": "02:42:ac:11:00:03",
                    "IPv4Address": "172.17.0.3/16",
                    "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": { }
        }
    ]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2NsYXJvamE_size_16_color_FFFFFF_t_70_pic_center]  
参考:  
https://blog.51cto.com/shyln/2133385

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