尚硅谷Docker实战-笔记11-Docker网络_尚硅谷docker笔记-优快云博客

本文链接：https://blog.youkuaiyun.com/yhkobe/article/details/135022256

Docker网络--高级篇

docker network简介

桥接：虚拟机直接连接外部的物理网络，主机起到了网桥的作用，虚拟机可以直接访问外网，并且是透明的

[root@node001 ~]# 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
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:45:80:b6 brd ff:ff:ff:ff:ff:ff
    inet 192.168.10.101/24 brd 192.168.10.255 scope global noprefixroute ens33
       valid_lft forever preferred_lft forever
    inet6 fe80::363b:8659:c323:345d/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 52:54:00:1c:3c:a9 brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
       valid_lft forever preferred_lft forever
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000
    link/ether 52:54:00:1c:3c:a9 brd ff:ff:ff:ff:ff:ff
5: docker0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default 
    link/ether 02:42:ea:3c:8d:47 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
[root@node001 ~]# ifconfig
docker0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 172.17.0.1  netmask 255.255.0.0  broadcast 172.17.255.255
        ether 02:42:ea:3c:8d:47  txqueuelen 0  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
 
ens33: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet 192.168.10.101  netmask 255.255.255.0  broadcast 192.168.10.255
        inet6 fe80::363b:8659:c323:345d  prefixlen 64  scopeid 0x20<link>
        ether 00:0c:29:45:80:b6  txqueuelen 1000  (Ethernet)
        RX packets 1347  bytes 110170 (107.5 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 1885  bytes 539241 (526.6 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
 
lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 84  bytes 9492 (9.2 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 84  bytes 9492 (9.2 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
 
virbr0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
        inet 192.168.122.1  netmask 255.255.255.0  broadcast 192.168.122.255
        ether 52:54:00:1c:3c:a9  txqueuelen 1000  (Ethernet)
        RX packets 0  bytes 0 (0.0 B)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 0  bytes 0 (0.0 B)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
 
[root@node001 ~]#

docker network常用命令

[root@node001 ~]# docker network ls
NETWORK ID     NAME      DRIVER    SCOPE
15e7f7fc3ef3   bridge    bridge    local
baa791142a49   host      host      local
f1c56a47c312   none      null      local
[root@node001 ~]# docker network --help
 
Usage:  docker network COMMAND
 
Manage networks
 
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
 
Run 'docker network COMMAND --help' for more information on a command.
[root@node001 ~]# docker network create aa_network
6396717447f3bdd837e532aa3a43a4f6d119c6ab11ad82dd3283cab6ce8e1ff2
[root@node001 ~]# docker network ls
NETWORK ID     NAME         DRIVER    SCOPE
6396717447f3   aa_network   bridge    local
15e7f7fc3ef3   bridge       bridge    local
baa791142a49   host         host      local
f1c56a47c312   none         null      local
[root@node001 ~]# docker network rm aa_network
aa_network
[root@node001 ~]# docker network inspect bridge
[
    {
        "Name": "bridge",
        "Id": "15e7f7fc3ef30852ccd8188e6efc6c7f1112ad72ebd48b2db210e25318d40b01",
        "Created": "2023-07-10T10:00:47.863580701+08:00",
        "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": {},
        "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": {}
    }
]
[root@node001 ~]#

docker network能干嘛

docker network 作用：

容器间的互联和通信以及端口映射

容器IP变动的时候可以通过服务名直接网络通信而不受影响

docker network网络模式有几种

docker network底层ip和容器映射变化

结论：docker容器内部的ip是有可能发生改变的

[root@node001 ~]# docker run -it --name u1 ubuntu bash
docker: Error response from daemon: Conflict. The container name "/u1" is already in use by container "191b846e7af7cfa2562ad28b18c43530264bf38a87d398654ebea49d40355266". You have to remove (or rename) that container to be able to reuse that name.
See 'docker run --help'.
[root@node001 ~]# docker run -it --name u1 ubuntu /bin/bash
docker: Error response from daemon: Conflict. The container name "/u1" is already in use by container "191b846e7af7cfa2562ad28b18c43530264bf38a87d398654ebea49d40355266". You have to remove (or rename) that container to be able to reuse that name.
See 'docker run --help'.
[root@node001 ~]# 
[root@node001 ~]# docker ps 
CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES
[root@node001 ~]# docker run -it --name u2 ubuntu /bin/bash
root@a3a2d265c8d0:/# [root@node001 ~]# 
[root@node001 ~]# docker images
REPOSITORY                                          TAG       IMAGE ID       CREATED         SIZE
centosjava8                                         1.5       0f64bc97e953   2 days ago      1.27GB
vluubuntu                                           1.2       a1ed6fe2f61e   9 days ago      118MB
node001:5000/vluubuntu                              1.2       a1ed6fe2f61e   9 days ago      118MB
ubuntu                                              1.2       7295d0d3bc7e   9 days ago      118MB
registry.cn-hangzhou.aliyuncs.com/vlu001/myubuntu   1.3       079bf1275a8a   10 days ago     185MB
atguigu/ubuntu                                      3.7       7b40f602c178   10 days ago     72.8MB
hello-world                                         <none>    9c7a54a9a43c   2 months ago    13.3kB
tomcat                                              latest    fb5657adc892   18 months ago   680MB
mysql                                               5.7       c20987f18b13   18 months ago   448MB
registry                                            latest    b8604a3fe854   20 months ago   26.2MB
ubuntu                                              latest    ba6acccedd29   21 months ago   72.8MB
hello-world                                         latest    feb5d9fea6a5   21 months ago   13.3kB
centos                                              latest    5d0da3dc9764   22 months ago   231MB
redis                                               6.0.8     16ecd2772934   2 years ago     104MB
billygoo/tomcat8-jdk8                               latest    30ef4019761d   4 years ago     523MB
[root@node001 ~]# docker ps
CONTAINER ID   IMAGE     COMMAND       CREATED              STATUS              PORTS     NAMES
a3a2d265c8d0   ubuntu    "/bin/bash"   About a minute ago   Up About a minute             u2
[root@node001 ~]# docker start u1
u1
[root@node001 ~]# docker ps
CONTAINER ID   IMAGE     COMMAND       CREATED         STATUS         PORTS     NAMES
a3a2d265c8d0   ubuntu    "/bin/bash"   2 minutes ago   Up 2 minutes             u2
191b846e7af7   ubuntu    "/bin/bash"   7 days ago      Up 4 seconds             u1
[root@node001 ~]# docker inspect u1
[
    {
        "Id": "191b846e7af7cfa2562ad28b18c43530264bf38a87d398654ebea49d40355266",
        "Created": "2023-07-03T03:13:52.588573071Z",
        "Path": "/bin/bash",
        "Args": [],
        "State": {
            "Status": "running",
            "Running": true,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 78941,
            "ExitCode": 0,
            "Error": "",
            "StartedAt": "2023-07-10T03:01:21.625402696Z",
            "FinishedAt": "2023-07-03T03:40:14.88557386Z"
        },
        "Image": "sha256:ba6acccedd2923aee4c2acc6a23780b14ed4b8a5fa4e14e252a23b846df9b6c1",
        "ResolvConfPath": "/var/lib/docker/containers/191b846e7af7cfa2562ad28b18c43530264bf38a87d398654ebea49d40355266/resolv.conf",
        "HostnamePath": "/var/lib/docker/containers/191b846e7af7cfa2562ad28b18c43530264bf38a87d398654ebea49d40355266/hostname",
        "HostsPath": "/var/lib/docker/containers/191b846e7af7cfa2562ad28b18c43530264bf38a87d398654ebea49d40355266/hosts",
        "LogPath": "/var/lib/docker/containers/191b846e7af7cfa2562ad28b18c43530264bf38a87d398654ebea49d40355266/191b846e7af7cfa2562ad28b18c43530264bf38a87d398654ebea49d40355266-json.log",
        "Name": "/u1",
        "RestartCount": 0,
        "Driver": "overlay2",
        "Platform": "linux",
        "MountLabel": "",
        "ProcessLabel": "",
        "AppArmorProfile": "",
        "ExecIDs": null,
        "HostConfig": {
            "Binds": [
                "/tmp/myHostData:/tmp/myDockerData:ro"
            ],
            "ContainerIDFile": "",
            "LogConfig": {
                "Type": "json-file",
                "Config": {}
            },
            "NetworkMode": "default",
            "PortBindings": {},
            "RestartPolicy": {
                "Name": "no",
                "MaximumRetryCount": 0
            },
            "AutoRemove": false,
            "VolumeDriver": "",
            "VolumesFrom": null,
            "ConsoleSize": [
                25,
                159
            ],
            "CapAdd": null,
            "CapDrop": null,
            "CgroupnsMode": "host",
            "Dns": [],
            "DnsOptions": [],
            "DnsSearch": [],
            "ExtraHosts": null,
            "GroupAdd": null,
            "IpcMode": "private",
            "Cgroup": "",
            "Links": null,
            "OomScoreAdj": 0,
            "PidMode": "",
            "Privileged": true,
            "PublishAllPorts": false,
            "ReadonlyRootfs": false,
            "SecurityOpt": [
                "label=disable"
            ],
            "UTSMode": "",
            "UsernsMode": "",
            "ShmSize": 67108864,
            "Runtime": "runc",
            "Isolation": "",
            "CpuShares": 0,
            "Memory": 0,
            "NanoCpus": 0,
            "CgroupParent": "",
            "BlkioWeight": 0,
            "BlkioWeightDevice": [],
            "BlkioDeviceReadBps": [],
            "BlkioDeviceWriteBps": [],
            "BlkioDeviceReadIOps": [],
            "BlkioDeviceWriteIOps": [],
            "CpuPeriod": 0,
            "CpuQuota": 0,
            "CpuRealtimePeriod": 0,
            "CpuRealtimeRuntime": 0,
            "CpusetCpus": "",
            "CpusetMems": "",
            "Devices": [],
            "DeviceCgroupRules": null,
            "DeviceRequests": null,
            "MemoryReservation": 0,
            "MemorySwap": 0,
            "MemorySwappiness": null,
            "OomKillDisable": false,
            "PidsLimit": null,
            "Ulimits": null,
            "CpuCount": 0,
            "CpuPercent": 0,
            "IOMaximumIOps": 0,
            "IOMaximumBandwidth": 0,
            "MaskedPaths": null,
            "ReadonlyPaths": null
        },
        "GraphDriver": {
            "Data": {
                "LowerDir": "/var/lib/docker/overlay2/43f6b0e9374010860528d0c061a9174f201391e9b2d9075fc466dc87a14efcdb-init/diff:/var/lib/docker/overlay2/f9254c3773e2c54c48ab593bcd84c8af0f7b65955f4d04fc08205a994258d983/diff",
                "MergedDir": "/var/lib/docker/overlay2/43f6b0e9374010860528d0c061a9174f201391e9b2d9075fc466dc87a14efcdb/merged",
                "UpperDir": "/var/lib/docker/overlay2/43f6b0e9374010860528d0c061a9174f201391e9b2d9075fc466dc87a14efcdb/diff",
                "WorkDir": "/var/lib/docker/overlay2/43f6b0e9374010860528d0c061a9174f201391e9b2d9075fc466dc87a14efcdb/work"
            },
            "Name": "overlay2"
        },
        "Mounts": [
            {
                "Type": "bind",
                "Source": "/tmp/myHostData",
                "Destination": "/tmp/myDockerData",
                "Mode": "ro",
                "RW": false,
                "Propagation": "rprivate"
            }
        ],
        "Config": {
            "Hostname": "191b846e7af7",
            "Domainname": "",
            "User": "",
            "AttachStdin": true,
            "AttachStdout": true,
            "AttachStderr": true,
            "Tty": true,
            "OpenStdin": true,
            "StdinOnce": true,
            "Env": [
                "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
            ],
            "Cmd": [
                "/bin/bash"
            ],
            "Image": "ubuntu",
            "Volumes": null,
            "WorkingDir": "",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": {}
        },
        "NetworkSettings": {
            "Bridge": "",
            "SandboxID": "fc0293e83763fea837ea4177961eeb0d8d86e7ed9293fbb5c21cad3e82025451",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "Ports": {},
            "SandboxKey": "/var/run/docker/netns/fc0293e83763",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "230dae8dc1c61af9a4280253525e6443e92dbabaa675299a3cb64cc67d84eead",
            "Gateway": "172.17.0.1",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "172.17.0.3",
            "IPPrefixLen": 16,
            "IPv6Gateway": "",
            "MacAddress": "02:42:ac:11:00:03",
            "Networks": {
                "bridge": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": null,
                    "NetworkID": "15e7f7fc3ef30852ccd8188e6efc6c7f1112ad72ebd48b2db210e25318d40b01",
                    "EndpointID": "230dae8dc1c61af9a4280253525e6443e92dbabaa675299a3cb64cc67d84eead",
                    "Gateway": "172.17.0.1",
                    "IPAddress": "172.17.0.3",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:11:00:03",
                    "DriverOpts": null
                }
            }
        }
    }
]
[root@node001 ~]# docker inspect u1 | tail -n 20
            "Networks": {
                "bridge": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": null,
                    "NetworkID": "15e7f7fc3ef30852ccd8188e6efc6c7f1112ad72ebd48b2db210e25318d40b01",
                    "EndpointID": "230dae8dc1c61af9a4280253525e6443e92dbabaa675299a3cb64cc67d84eead",
                    "Gateway": "172.17.0.1",
                    "IPAddress": "172.17.0.3",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:11:00:03",
                    "DriverOpts": null
                }
            }
        }
    }
]
[root@node001 ~]# docker inspect u2 | tail -n 20
            "Networks": {
                "bridge": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": null,
                    "NetworkID": "15e7f7fc3ef30852ccd8188e6efc6c7f1112ad72ebd48b2db210e25318d40b01",
                    "EndpointID": "07dfc1689c6be633242e6c25d9ac540c38dbdfd5e418fd55b5e13b143a6745ec",
                    "Gateway": "172.17.0.1",
                    "IPAddress": "172.17.0.2",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:11:00:02",
                    "DriverOpts": null
                }
            }
        }
    }
]
[root@node001 ~]# docker rm -f u2
u2
[root@node001 ~]# docker run -it --name u3 ubuntu bash
root@32e53de0224b:/# [root@node001 ~]# 
[root@node001 ~]# docker inspect u3 | tail -n 20
            "Networks": {
                "bridge": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": null,
                    "NetworkID": "15e7f7fc3ef30852ccd8188e6efc6c7f1112ad72ebd48b2db210e25318d40b01",
                    "EndpointID": "03f56e1422d24b8404e2bc93ef85b1f0676279d7c761d16aac7d39c30116d2cc",
                    "Gateway": "172.17.0.1",
                    "IPAddress": "172.17.0.2",
                    "IPPrefixLen": 16,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "02:42:ac:11:00:02",
                    "DriverOpts": null
                }
            }
        }
    }
]
[root@node001 ~]# docker network create bb_network
c6cc76c12f4f793e4488364a462dfaf1be40b6c58f35548e95e8a6b0b9f2cd59
[root@node001 ~]#

docker network之bridge

[root@node001 ~]# docker run -d -p 8081:8080 --name tomcat81 billygoo/tomcat8-jdk8
612acb85417b79180b9dda0aee5d3435a02d8f75d9017dc5c58b48f298b03330
[root@node001 ~]# docker run -d -p 8082:8080 --name tomcat82 billygoo/tomcat8-jdk8
c1c3cceb68e2e4ac43d95d8fd5173895801b61026dcfd7fb9cfc2688341b8437
[root@node001 ~]# docker ps
CONTAINER ID   IMAGE                   COMMAND             CREATED          STATUS          PORTS                                       NAMES
c1c3cceb68e2   billygoo/tomcat8-jdk8   "catalina.sh run"   21 seconds ago   Up 18 seconds   0.0.0.0:8082->8080/tcp, :::8082->8080/tcp   tomcat82
612acb85417b   billygoo/tomcat8-jdk8   "catalina.sh run"   46 seconds ago   Up 44 seconds   0.0.0.0:8081->8080/tcp, :::8081->8080/tcp   tomcat81
22ddf65b567c   ubuntu                  "bash"              13 minutes ago   Up 13 minutes                                               u2
32e53de0224b   ubuntu                  "bash"              19 minutes ago   Up 19 minutes                                               u3
191b846e7af7   ubuntu                  "/bin/bash"         7 days ago       Up 23 minutes                                               u1
[root@node001 ~]# docker stop u1 u2 u3
u1
u2
u3
[root@node001 ~]# docker ps
CONTAINER ID   IMAGE                   COMMAND             CREATED              STATUS              PORTS                                       NAMES
c1c3cceb68e2   billygoo/tomcat8-jdk8   "catalina.sh run"   45 seconds ago       Up 42 seconds       0.0.0.0:8082->8080/tcp, :::8082->8080/tcp   tomcat82
612acb85417b   billygoo/tomcat8-jdk8   "catalina.sh run"   About a minute ago   Up About a minute   0.0.0.0:8081->8080/tcp, :::8081->8080/tcp   tomcat81
[root@node001 ~]# 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
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: ens33: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether 00:0c:29:45:80:b6 brd ff:ff:ff:ff:ff:ff
    inet 192.168.10.101/24 brd 192.168.10.255 scope global noprefixroute ens33
       valid_lft forever preferred_lft forever
    inet6 fe80::363b:8659:c323:345d/64 scope link noprefixroute 
       valid_lft forever preferred_lft forever
3: virbr0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default qlen 1000
    link/ether 52:54:00:1c:3c:a9 brd ff:ff:ff:ff:ff:ff
    inet 192.168.122.1/24 brd 192.168.122.255 scope global virbr0
       valid_lft forever preferred_lft forever
4: virbr0-nic: <BROADCAST,MULTICAST> mtu 1500 qdisc pfifo_fast master virbr0 state DOWN group default qlen 1000
    link/ether 52:54:00:1c:3c:a9 brd ff:ff:ff:ff:ff:ff
5: docker0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default 
    link/ether 02:42:ea:3c:8d:47 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
    inet6 fe80::42:eaff:fe3c:8d47/64 scope link 
       valid_lft forever preferred_lft forever
13: br-c6cc76c12f4f: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc noqueue state DOWN group default 
    link/ether 02:42:60:73:7a:a9 brd ff:ff:ff:ff:ff:ff
    inet 172.19.0.1/16 brd 172.19.255.255 scope global br-c6cc76c12f4f
       valid_lft forever preferred_lft forever
17: veth69f6c0e@if16: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default 
    link/ether 92:77:13:19:88:b9 brd ff:ff:ff:ff:ff:ff link-netnsid 3
    inet6 fe80::9077:13ff:fe19:88b9/64 scope link 
       valid_lft forever preferred_lft forever
19: vetha0b2bcb@if18: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue master docker0 state UP group default 
    link/ether 6e:91:00:5d:6f:b6 brd ff:ff:ff:ff:ff:ff link-netnsid 4
    inet6 fe80::6c91:ff:fe5d:6fb6/64 scope link 
       valid_lft forever preferred_lft forever
[root@node001 ~]# docker exec -it tomcat81 bash
root@612acb85417b:/usr/local/tomcat# 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
16: eth0@if17: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default 
    link/ether 02:42:ac:11:00:05 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet 172.17.0.5/16 brd 172.17.255.255 scope global eth0
       valid_lft forever preferred_lft forever
root@612acb85417b:/usr/local/tomcat# read escape sequence
[root@node001 ~]# docker exec -it tomcat82 bash
root@c1c3cceb68e2:/usr/local/tomcat# 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
18: eth0@if19: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default 
    link/ether 02:42:ac:11:00:06 brd ff:ff:ff:ff:ff:ff link-netnsid 0
    inet 172.17.0.6/16 brd 172.17.255.255 scope global eth0
       valid_lft forever preferred_lft forever
root@c1c3cceb68e2:/usr/local/tomcat# read escape sequence
[root@node001 ~]#

docker network之host

[root@node001 ~]# docker start tomcat81
tomcat81
[root@node001 ~]# docker start tomcat82
tomcat82
[root@node001 ~]# docker run -d -p 8083:8080 --network host --name tomcat83 billygoo/tomcat8-jdk8
WARNING: Published ports are discarded when using host network mode
f6336ffb274c54cb86b727195f878b559b8f6e8aa6f6fb734c75b24d7b20099c
[root@node001 ~]# docker ps
CONTAINER ID   IMAGE                   COMMAND             CREATED         STATUS          PORTS                                       NAMES
f6336ffb274c   billygoo/tomcat8-jdk8   "catalina.sh run"   5 seconds ago   Up 3 seconds                                                tomcat83
c1c3cceb68e2   billygoo/tomcat8-jdk8   "catalina.sh run"   4 hours ago     Up 48 seconds   0.0.0.0:8082->8080/tcp, :::8082->8080/tcp   tomcat82
612acb85417b   billygoo/tomcat8-jdk8   "catalina.sh run"   4 hours ago     Up 52 seconds   0.0.0.0:8081->8080/tcp, :::8081->8080/tcp   tomcat81
[root@node001 ~]# docker rm -f tomcat83
tomcat83
[root@node001 ~]# docker ps
CONTAINER ID   IMAGE                   COMMAND             CREATED       STATUS         PORTS                                       NAMES
c1c3cceb68e2   billygoo/tomcat8-jdk8   "catalina.sh run"   4 hours ago   Up 3 minutes   0.0.0.0:8082->8080/tcp, :::8082->8080/tcp   tomcat82
612acb85417b   billygoo/tomcat8-jdk8   "catalina.sh run"   4 hours ago   Up 3 minutes   0.0.0.0:8081->8080/tcp, :::8081->8080/tcp   tomcat81
[root@node001 ~]# docker run -d              --network host --name tomcat83 billygoo/tomcat8-jdk8
bf2b920ad4d5e29e0c664ed9c312cb8abc17b85925f2defb7fe340bc896a4c6b
[root@node001 ~]# docker inspect tomcat83
[
    {
        "Id": "bf2b920ad4d5e29e0c664ed9c312cb8abc17b85925f2defb7fe340bc896a4c6b",
        "Created": "2023-07-10T07:25:41.756619244Z",
        "Path": "catalina.sh",
        "Args": [
            "run"
        ],
        "State": {
            "Status": "running",
            "Running": true,
            "Paused": false,
            "Restarting": false,
            "OOMKilled": false,
            "Dead": false,
            "Pid": 29365,
            "ExitCode": 0,
            "Error": "",
            "StartedAt": "2023-07-10T07:25:42.079612342Z",
            "FinishedAt": "0001-01-01T00:00:00Z"
        },
        "Image": "sha256:30ef4019761d4aee397841d0b4291a928a4816745e2eba2ead83f1d2cf64d42a",
        "ResolvConfPath": "/var/lib/docker/containers/bf2b920ad4d5e29e0c664ed9c312cb8abc17b85925f2defb7fe340bc896a4c6b/resolv.conf",
        "HostnamePath": "/var/lib/docker/containers/bf2b920ad4d5e29e0c664ed9c312cb8abc17b85925f2defb7fe340bc896a4c6b/hostname",
        "HostsPath": "/var/lib/docker/containers/bf2b920ad4d5e29e0c664ed9c312cb8abc17b85925f2defb7fe340bc896a4c6b/hosts",
        "LogPath": "/var/lib/docker/containers/bf2b920ad4d5e29e0c664ed9c312cb8abc17b85925f2defb7fe340bc896a4c6b/bf2b920ad4d5e29e0c664ed9c312cb8abc17b85925f2defb7fe340bc896a4c6b-json.log",
        "Name": "/tomcat83",
        "RestartCount": 0,
        "Driver": "overlay2",
        "Platform": "linux",
        "MountLabel": "",
        "ProcessLabel": "",
        "AppArmorProfile": "",
        "ExecIDs": null,
        "HostConfig": {
            "Binds": null,
            "ContainerIDFile": "",
            "LogConfig": {
                "Type": "json-file",
                "Config": {}
            },
            "NetworkMode": "host",
            "PortBindings": {},
            "RestartPolicy": {
                "Name": "no",
                "MaximumRetryCount": 0
            },
            "AutoRemove": false,
            "VolumeDriver": "",
            "VolumesFrom": null,
            "ConsoleSize": [
                30,
                159
            ],
            "CapAdd": null,
            "CapDrop": null,
            "CgroupnsMode": "host",
            "Dns": [],
            "DnsOptions": [],
            "DnsSearch": [],
            "ExtraHosts": null,
            "GroupAdd": null,
            "IpcMode": "private",
            "Cgroup": "",
            "Links": null,
            "OomScoreAdj": 0,
            "PidMode": "",
            "Privileged": false,
            "PublishAllPorts": false,
            "ReadonlyRootfs": false,
            "SecurityOpt": null,
            "UTSMode": "",
            "UsernsMode": "",
            "ShmSize": 67108864,
            "Runtime": "runc",
            "Isolation": "",
            "CpuShares": 0,
            "Memory": 0,
            "NanoCpus": 0,
            "CgroupParent": "",
            "BlkioWeight": 0,
            "BlkioWeightDevice": [],
            "BlkioDeviceReadBps": [],
            "BlkioDeviceWriteBps": [],
            "BlkioDeviceReadIOps": [],
            "BlkioDeviceWriteIOps": [],
            "CpuPeriod": 0,
            "CpuQuota": 0,
            "CpuRealtimePeriod": 0,
            "CpuRealtimeRuntime": 0,
            "CpusetCpus": "",
            "CpusetMems": "",
            "Devices": [],
            "DeviceCgroupRules": null,
            "DeviceRequests": null,
            "MemoryReservation": 0,
            "MemorySwap": 0,
            "MemorySwappiness": null,
            "OomKillDisable": false,
            "PidsLimit": null,
            "Ulimits": null,
            "CpuCount": 0,
            "CpuPercent": 0,
            "IOMaximumIOps": 0,
            "IOMaximumBandwidth": 0,
            "MaskedPaths": [
                "/proc/asound",
                "/proc/acpi",
                "/proc/kcore",
                "/proc/keys",
                "/proc/latency_stats",
                "/proc/timer_list",
                "/proc/timer_stats",
                "/proc/sched_debug",
                "/proc/scsi",
                "/sys/firmware"
            ],
            "ReadonlyPaths": [
                "/proc/bus",
                "/proc/fs",
                "/proc/irq",
                "/proc/sys",
                "/proc/sysrq-trigger"
            ]
        },
        "GraphDriver": {
            "Data": {
                "LowerDir": "/var/lib/docker/overlay2/629599bb853e3e9eebfe87c61dd999d46cbcfc187f29505a3672afa0a75ff956-init/diff:/var/lib/docker/overlay2/9842fc8b9968299b96b9d8c1eb56096313ac3d3b50930cc7c262ff86a3d31e82/diff:/var/lib/docker/overlay2/7c4eb16163030abb5a2df0b7aac0a4047e03fad852cef52dffe3ece7f47a2c62/diff:/var/lib/docker/overlay2/534dcd05dc0c4c5ac338d39ef770a7b87ec3ad0ae4ca8f84570f28cc24cafb60/diff:/var/lib/docker/overlay2/d0fd9f89b30193ea1d8715e4a16956ad9f6b5eadcd3e3ba18bacb3f78bcc7ced/diff:/var/lib/docker/overlay2/268ce34b7cafa7ebe9d4dd9cc38d505d2c1fa43132c84c50ede21a5cc4f41981/diff:/var/lib/docker/overlay2/10ae0293114a7166a84b7c0cf5e0b1f8056bca9d819154fc78475563b9021645/diff:/var/lib/docker/overlay2/2b04040394297975a4ed6124b0886ae08427656f2a0a596ace8d6902a4756c82/diff:/var/lib/docker/overlay2/6bc48a69da1f07ee2209d121ce1fab14b8ab4dc897fb0cdd3ca9abd507f0b3b6/diff:/var/lib/docker/overlay2/4f30323fd41675a567ebd4a4484bcdd5a5fed81c92a2f96ab28bea370244800f/diff:/var/lib/docker/overlay2/d089666b37a1f0650501fdd6ecdf9971ec871dbe4b1ffde16c471aae7284154e/diff:/var/lib/docker/overlay2/464427884ca315d81c9ba390bb0a1d095599c04e12dd71e626dcd7335d0fed51/diff:/var/lib/docker/overlay2/893d0d8ac70514a6a52ab778a2c1e4f027f9a52438cdafa60953057ad06a2a84/diff:/var/lib/docker/overlay2/1f631e4437002ddab9e06016c026fdece3744a3817284da253433724050ddeff/diff",
                "MergedDir": "/var/lib/docker/overlay2/629599bb853e3e9eebfe87c61dd999d46cbcfc187f29505a3672afa0a75ff956/merged",
                "UpperDir": "/var/lib/docker/overlay2/629599bb853e3e9eebfe87c61dd999d46cbcfc187f29505a3672afa0a75ff956/diff",
                "WorkDir": "/var/lib/docker/overlay2/629599bb853e3e9eebfe87c61dd999d46cbcfc187f29505a3672afa0a75ff956/work"
            },
            "Name": "overlay2"
        },
        "Mounts": [],
        "Config": {
            "Hostname": "node001",
            "Domainname": "",
            "User": "",
            "AttachStdin": false,
            "AttachStdout": false,
            "AttachStderr": false,
            "ExposedPorts": {
                "8080/tcp": {}
            },
            "Tty": false,
            "OpenStdin": false,
            "StdinOnce": false,
            "Env": [
                "PATH=/usr/local/tomcat/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
                "LANG=C.UTF-8",
                "JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64",
                "JAVA_VERSION=8u171",
                "JAVA_DEBIAN_VERSION=8u171-b11-1~deb9u1",
                "CA_CERTIFICATES_JAVA_VERSION=20170531+nmu1",
                "CATALINA_HOME=/usr/local/tomcat",
                "TOMCAT_NATIVE_LIBDIR=/usr/local/tomcat/native-jni-lib",
                "LD_LIBRARY_PATH=/usr/local/tomcat/native-jni-lib",
                "OPENSSL_VERSION=1.1.0f-3+deb9u2",
                "GPG_KEYS=05AB33110949707C93A279E3D3EFE6B686867BA6 07E48665A34DCAFAE522E5E6266191C37C037D42 47309207D818FFD8DCD3F83F1931D684307A10A5 541FBE7D8F78B25E055DDEE13C370389288584E7 61B832AC2F1C5A90F0F9B00A1C506407564C17A3 713DA88BE50911535FE716F5208B0AB1D63011C7 79F7026C690BAA50B92CD8B66A3AD3F4F22C4FED 9BA44C2621385CB966EBA586F72C284D731FABEE A27677289986DB50844682F8ACB77FC2E86E29AC A9C5DF4D22E99998D9875A5110C01C5A2F6059E7 DCFD35E0BF8CA7344752DE8B6FB21E8933C60243 F3A04C595DB5B6A5F1ECA43E3B7BBB100D811BBE F7DA48BB64BCB84ECBA7EE6935CD23C10D498E23",
                "TOMCAT_MAJOR=8",
                "TOMCAT_VERSION=8.0.53",
                "TOMCAT_SHA512=cd8a4e48a629a2f2bb4ce6b101ebcce41da52b506064396ec1b2915c0b0d8d82123091242f2929a649bcd8b65ecf6cd1ab9c7d90ac0e261821097ab6fbe22df9",
                "TOMCAT_TGZ_URLS=https://www.apache.org/dyn/closer.cgi?action=download&filename=tomcat/tomcat-8/v8.0.53/bin/apache-tomcat-8.0.53.tar.gz \thttps://www-us.apache.org/dist/tomcat/tomcat-8/v8.0.53/bin/apache-tomcat-8.0.53.tar.gz \thttps://www.apache.org/dist/tomcat/tomcat-8/v8.0.53/bin/apache-tomcat-8.0.53.tar.gz \thttps://archive.apache.org/dist/tomcat/tomcat-8/v8.0.53/bin/apache-tomcat-8.0.53.tar.gz",
                "TOMCAT_ASC_URLS=https://www.apache.org/dyn/closer.cgi?action=download&filename=tomcat/tomcat-8/v8.0.53/bin/apache-tomcat-8.0.53.tar.gz.asc \thttps://www-us.apache.org/dist/tomcat/tomcat-8/v8.0.53/bin/apache-tomcat-8.0.53.tar.gz.asc \thttps://www.apache.org/dist/tomcat/tomcat-8/v8.0.53/bin/apache-tomcat-8.0.53.tar.gz.asc \thttps://archive.apache.org/dist/tomcat/tomcat-8/v8.0.53/bin/apache-tomcat-8.0.53.tar.gz.asc"
            ],
            "Cmd": [
                "catalina.sh",
                "run"
            ],
            "Image": "billygoo/tomcat8-jdk8",
            "Volumes": null,
            "WorkingDir": "/usr/local/tomcat",
            "Entrypoint": null,
            "OnBuild": null,
            "Labels": {}
        },
        "NetworkSettings": {
            "Bridge": "",
            "SandboxID": "7591a0130844df2007694034069cfaf3fa79bc78231b9ae9009018da96a5531e",
            "HairpinMode": false,
            "LinkLocalIPv6Address": "",
            "LinkLocalIPv6PrefixLen": 0,
            "Ports": {},
            "SandboxKey": "/var/run/docker/netns/default",
            "SecondaryIPAddresses": null,
            "SecondaryIPv6Addresses": null,
            "EndpointID": "",
            "Gateway": "",
            "GlobalIPv6Address": "",
            "GlobalIPv6PrefixLen": 0,
            "IPAddress": "",
            "IPPrefixLen": 0,
            "IPv6Gateway": "",
            "MacAddress": "",
            "Networks": {
                "host": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": null,
                    "NetworkID": "baa791142a49a66e391e60263e60a188bdc7e27072119fd585436e281d91160f",
                    "EndpointID": "cbbf729509f1984fc3eb556ad34d37f17915d0cd41d1a47ebad5326637ff3583",
                    "Gateway": "",
                    "IPAddress": "",
                    "IPPrefixLen": 0,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "",
                    "DriverOpts": null
                }
            }
        }
    }
]
[root@node001 ~]# docker exec -it tomcat83 bash
root@node001:/usr/local/tomcat#

docker network之none

[root@node001 ~]# docker run -d -p 8084:8080 --network none --name tomcat84 billygoo/tomcat8-jdk8
6f3e8c545791a435a9b3dbcd8ec1c0fb051daa386ea4e3513e775c1623d95046
[root@node001 ~]# docker inspect tomcat84 | tail -n 20
            "Networks": {
                "none": {
                    "IPAMConfig": null,
                    "Links": null,
                    "Aliases": null,
                    "NetworkID": "f1c56a47c3128e398257a61ffa51451a2532f7dbe34336a5169e4a16f770f0a2",
                    "EndpointID": "ca7ed125ec6466a372ea3dc9c5d00b0b5d99a1680966e0830f19a3b187606cc8",
                    "Gateway": "",
                    "IPAddress": "",
                    "IPPrefixLen": 0,
                    "IPv6Gateway": "",
                    "GlobalIPv6Address": "",
                    "GlobalIPv6PrefixLen": 0,
                    "MacAddress": "",
                    "DriverOpts": null
                }
            }
        }
    }
]
[root@node001 ~]# docker ps
CONTAINER ID   IMAGE                   COMMAND             CREATED          STATUS          PORTS                                       NAMES
6f3e8c545791   billygoo/tomcat8-jdk8   "catalina.sh run"   12 minutes ago   Up 12 minutes                                               tomcat84
bf2b920ad4d5   billygoo/tomcat8-jdk8   "catalina.sh run"   31 minutes ago   Up 31 minutes                                               tomcat83
c1c3cceb68e2   billygoo/tomcat8-jdk8   "catalina.sh run"   5 hours ago      Up 35 minutes   0.0.0.0:8082->8080/tcp, :::8082->8080/tcp   tomcat82
612acb85417b   billygoo/tomcat8-jdk8   "catalina.sh run"   5 hours ago      Up 36 minutes   0.0.0.0:8081->8080/tcp, :::8081->8080/tcp   tomcat81
[root@node001 ~]# docker exec -it tomcat84 bash
root@6f3e8c545791:/usr/local/tomcat# 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
root@6f3e8c545791:/usr/local/tomcat# read escape sequence
[root@node001 ~]#

docker network之container

container网络模式

新建的容器和已经存在的一个容器共享一个网络ip配置而不是和宿主机共享。新创建的容器不会创建自己的网卡，配置自己的IP，而是和一个指定的容器共享IP、端口范围等。同样，两个容器除了网络方面，其他的如文件系统、进程列表等还是隔离的。

[root@node001 ~]# docker ps
CONTAINER ID   IMAGE                   COMMAND             CREATED          STATUS          PORTS                                       NAMES
6f3e8c545791   billygoo/tomcat8-jdk8   "catalina.sh run"   18 minutes ago   Up 18 minutes                                               tomcat84
bf2b920ad4d5   billygoo/tomcat8-jdk8   "catalina.sh run"   37 minutes ago   Up 37 minutes                                               tomcat83
c1c3cceb68e2   billygoo/tomcat8-jdk8   "catalina.sh run"   5 hours ago      Up 41 minutes   0.0.0.0:8082->8080/tcp, :::8082->8080/tcp   tomcat82
612acb85417b   billygoo/tomcat8-jdk8   "catalina.sh run"   5 hours ago      Up 41 minutes   0.0.0.0:8081->8080/tcp, :::8081->8080/tcp   tomcat81
[root@node001 ~]# docker run -d -p 8085:8080                                     --name tomcat85 billygoo/tomcat8-jdk8
439b7efdb024b4b359a4a33f31620c01128828923813b5669d233172d8602965
[root@node001 ~]# docker run -d -p 8086:8080 --network container:tomcat85 --name tomcat86 billygoo/tomcat8-jdk8
docker: Error response from daemon: conflicting options: port publishing and the container type network mode.
See 'docker run --help'.
[root@node001 ~]# docker rm -f tomcat85
tomcat85
[root@node001 ~]# docker ps
CONTAINER ID   IMAGE                   COMMAND             CREATED          STATUS          PORTS                                       NAMES
6f3e8c545791   billygoo/tomcat8-jdk8   "catalina.sh run"   21 minutes ago   Up 21 minutes                                               tomcat84
bf2b920ad4d5   billygoo/tomcat8-jdk8   "catalina.sh run"   41 minutes ago   Up 41 minutes                                               tomcat83
c1c3cceb68e2   billygoo/tomcat8-jdk8   "catalina.sh run"   5 hours ago      Up 45 minutes   0.0.0.0:8082->8080/tcp, :::8082->8080/tcp   tomcat82
612acb85417b   billygoo/tomcat8-jdk8   "catalina.sh run"   5 hours ago      Up 45 minutes   0.0.0.0:8081->8080/tcp, :::8081->8080/tcp   tomcat81
[root@node001 ~]# docker run -it                                                    --name alpine1 alpine /bin/sh
Unable to find image 'alpine:latest' locally
latest: Pulling from library/alpine
59bf1c3509f3: Pull complete 
Digest: sha256:21a3deaa0d32a8057914f36584b5288d2e5ecc984380bc0118285c70fa8c9300
Status: Downloaded newer image for alpine:latest
/ # ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 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
13: eth0@if14: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue state UP 
    link/ether 02:42:ac:11:00:04 brd ff:ff:ff:ff:ff:ff
    inet 172.17.0.4/16 brd 172.17.255.255 scope global eth0
       valid_lft forever preferred_lft forever
/ # exit
[root@node001 ~]# docker ps
CONTAINER ID   IMAGE                   COMMAND             CREATED          STATUS             PORTS                                       NAMES
64ffeaad19d9   alpine                  "/bin/sh"           15 minutes ago   Up 15 minutes                                                  alpine2
6f3e8c545791   billygoo/tomcat8-jdk8   "catalina.sh run"   40 minutes ago   Up 40 minutes                                                  tomcat84
bf2b920ad4d5   billygoo/tomcat8-jdk8   "catalina.sh run"   59 minutes ago   Up 59 minutes                                                  tomcat83
c1c3cceb68e2   billygoo/tomcat8-jdk8   "catalina.sh run"   5 hours ago      Up About an hour   0.0.0.0:8082->8080/tcp, :::8082->8080/tcp   tomcat82
612acb85417b   billygoo/tomcat8-jdk8   "catalina.sh run"   5 hours ago      Up About an hour   0.0.0.0:8081->8080/tcp, :::8081->8080/tcp   tomcat81
[root@node001 ~]# 
 
[root@node001 ~]# docker run -it --network container:alpine1 --name alpine2  alpine /bin/sh
/ # ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN 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
13: eth0@if14: <BROADCAST,MULTICAST,UP,LOWER_UP,M-DOWN> mtu 1500 qdisc noqueue state UP 
    link/ether 02:42:ac:11:00:04 brd ff:ff:ff:ff:ff:ff
    inet 172.17.0.4/16 brd 172.17.255.255 scope global eth0
       valid_lft forever preferred_lft forever
/ # exit
[root@node001 ~]#

docker network之自定义网络

[root@node001 ~]# docker network ls
NETWORK ID     NAME         DRIVER    SCOPE
c6cc76c12f4f   bb_network   bridge    local
616bcbc5cc80   bridge       bridge    local
baa791142a49   host         host      local
f1c56a47c312   none         null      local
[root@node001 ~]# docker ps 
CONTAINER ID   IMAGE                   COMMAND             CREATED             STATUS             PORTS                                       NAMES
6f3e8c545791   billygoo/tomcat8-jdk8   "catalina.sh run"   48 minutes ago      Up 48 minutes                                                  tomcat84
bf2b920ad4d5   billygoo/tomcat8-jdk8   "catalina.sh run"   About an hour ago   Up About an hour                                               tomcat83
c1c3cceb68e2   billygoo/tomcat8-jdk8   "catalina.sh run"   5 hours ago         Up About an hour   0.0.0.0:8082->8080/tcp, :::8082->8080/tcp   tomcat82
612acb85417b   billygoo/tomcat8-jdk8   "catalina.sh run"   5 hours ago         Up About an hour   0.0.0.0:8081->8080/tcp, :::8081->8080/tcp   tomcat81
[root@node001 ~]#

[root@node001 ~]# docker ps
CONTAINER ID   IMAGE                   COMMAND             CREATED             STATUS             PORTS                                       NAMES
6f3e8c545791   billygoo/tomcat8-jdk8   "catalina.sh run"   58 minutes ago      Up 58 minutes                                                  tomcat84
bf2b920ad4d5   billygoo/tomcat8-jdk8   "catalina.sh run"   About an hour ago   Up About an hour                                               tomcat83
c1c3cceb68e2   billygoo/tomcat8-jdk8   "catalina.sh run"   5 hours ago         Up About an hour   0.0.0.0:8082->8080/tcp, :::8082->8080/tcp   tomcat82
612acb85417b   billygoo/tomcat8-jdk8   "catalina.sh run"   5 hours ago         Up About an hour   0.0.0.0:8081->8080/tcp, :::8081->8080/tcp   tomcat81
[root@node001 ~]# docker exec -it tomcat81 bash
root@612acb85417b:/usr/local/tomcat# 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
7: eth0@if8: <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 172.17.0.2/16 brd 172.17.255.255 scope global eth0
       valid_lft forever preferred_lft forever
root@612acb85417b:/usr/local/tomcat# ping 172.17.0.3
PING 172.17.0.3 (172.17.0.3) 56(84) bytes of data.
64 bytes from 172.17.0.3: icmp_seq=1 ttl=64 time=0.591 ms
64 bytes from 172.17.0.3: icmp_seq=2 ttl=64 time=0.099 ms

[root@node001 ~]# docker exec -it tomcat82 bash
root@c1c3cceb68e2:/usr/local/tomcat# 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
9: eth0@if10: <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 172.17.0.3/16 brd 172.17.255.255 scope global eth0
       valid_lft forever preferred_lft forever
root@c1c3cceb68e2:/usr/local/tomcat# 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=0.708 ms
64 bytes from 172.17.0.2: icmp_seq=2 ttl=64 time=0.136 ms
64 bytes from 172.17.0.2: icmp_seq=3 ttl=64 time=0.095 ms

docker network之自定义网络