这是我的信息：
➜ ~ docker -v
Docker version 19.03.5, build 633a0ea
➜ ~ uname -ar
Darwin Felixs-iMac.local 19.2.0 Darwin Kernel Version 19.2.0: Sat Nov 9 03:47:04 PST 2019; root:xnu-6153.61.1~20/RELEASE_X86_64 x86_64
当我创建一个具有这样的主机网络模式的docker时（复制自https://docs.docker.com/network/network-tutorial-host/）
docker run --rm -d --network host --name my_nginx nginx运行良好，我可以看到 docker 正在运行。 但问题是端口没有暴露。 当我检查
lsof -i:80➜ ~ docker run --rm -d --network host --name my_nginx nginx
282fe15a16b70d7bd38b770fd2b67f0023b8fce1f9852a91af4047ef8f6a3f0d
➜ ~ lsof -i:80
➜ ~ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
282fe15a16b7 nginx "nginx -g 'daemon of…" About a minute ago Up About a minute
我检查了容器，一切看起来都很好：
➜ ~ docker inspect my_nginx
[
{
"Id": "282fe15a16b70d7bd38b770fd2b67f0023b8fce1f9852a91af4047ef8f6a3f0d",
"Created": "2020-02-26T15:35:58.243963941Z",
"Path": "nginx",
"Args": [
"-g",
"daemon off;"
],
"State": {
"Status": "running",
"Running": true,
"Paused": false,
"Restarting": false,
"OOMKilled": false,
"Dead": false,
"Pid": 2238,
"ExitCode": 0,
"Error": "",
"StartedAt": "2020-02-26T15:35:58.39452216Z",
"FinishedAt": "0001-01-01T00:00:00Z"
},
"Image": "sha256:2073e0bcb60ee98548d313ead5eacbfe16d9054f8800a32bedd859922a99a6e1",
"ResolvConfPath": "/var/lib/docker/containers/282fe15a16b70d7bd38b770fd2b67f0023b8fce1f9852a91af4047ef8f6a3f0d/resolv.conf",
"HostnamePath": "/var/lib/docker/containers/282fe15a16b70d7bd38b770fd2b67f0023b8fce1f9852a91af4047ef8f6a3f0d/hostname",
"HostsPath": "/var/lib/docker/containers/282fe15a16b70d7bd38b770fd2b67f0023b8fce1f9852a91af4047ef8f6a3f0d/hosts",
"LogPath": "/var/lib/docker/containers/282fe15a16b70d7bd38b770fd2b67f0023b8fce1f9852a91af4047ef8f6a3f0d/282fe15a16b70d7bd38b770fd2b67f0023b8fce1f9852a91af4047ef8f6a3f0d-json.log",
"Name": "/my_nginx",
"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": true,
"VolumeDriver": "",
"VolumesFrom": null,
"CapAdd": null,
"CapDrop": null,
"Capabilities": null,
"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",
"ConsoleSize": [
0,
0
],
"Isolation": "",
"CpuShares": 0,
"Memory": 0,
"NanoCpus": 0,
"CgroupParent": "",
"BlkioWeight": 0,
"BlkioWeightDevice": [],
"BlkioDeviceReadBps": null,
"BlkioDeviceWriteBps": null,
"BlkioDeviceReadIOps": null,
"BlkioDeviceWriteIOps": null,
"CpuPeriod": 0,
"CpuQuota": 0,
"CpuRealtimePeriod": 0,
"CpuRealtimeRuntime": 0,
"CpusetCpus": "",
"CpusetMems": "",
"Devices": [],
"DeviceCgroupRules": null,
"DeviceRequests": null,
"KernelMemory": 0,
"KernelMemoryTCP": 0,
"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/overlay2/062cb6ccb41fb22ba624fb8f93e99e79bcf02cd240fbb4998e47aab1380e015f-init/diff:/var/lib/docker/overlay2/587f9f458f8f0de65434971354636364ff685701fa1f8ba0ba7da4459e22540c/diff:/var/lib/docker/overlay2/1a94586d0949b8305ac14f0934a46149b31db3eb6e7125d7b2965deef318695d/diff:/var/lib/docker/overlay2/ac900d4637ed15f3337e999928ec2a9de2ef4a998f4ce53700a1dffc955d5f0e/diff",
"MergedDir": "/var/lib/docker/overlay2/062cb6ccb41fb22ba624fb8f93e99e79bcf02cd240fbb4998e47aab1380e015f/merged",
"UpperDir": "/var/lib/docker/overlay2/062cb6ccb41fb22ba624fb8f93e99e79bcf02cd240fbb4998e47aab1380e015f/diff",
"WorkDir": "/var/lib/docker/overlay2/062cb6ccb41fb22ba624fb8f93e99e79bcf02cd240fbb4998e47aab1380e015f/work"
},
"Name": "overlay2"
},
"Mounts": [],
"Config": {
"Hostname": "docker-desktop",
"Domainname": "",
"User": "",
"AttachStdin": false,
"AttachStdout": false,
"AttachStderr": false,
"ExposedPorts": {
"80/tcp": {}
},
"Tty": false,
"OpenStdin": false,
"StdinOnce": false,
"Env": [
"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"NGINX_VERSION=1.17.8",
"NJS_VERSION=0.3.8",
"PKG_RELEASE=1~buster"
],
"Cmd": [
"nginx",
"-g",
"daemon off;"
],
"Image": "nginx",
"Volumes": null,
"WorkingDir": "",
"Entrypoint": null,
"OnBuild": null,
"Labels": {
"maintainer": "NGINX Docker Maintainers <[email protected]>"
},
"StopSignal": "SIGTERM"
},
"NetworkSettings": {
"Bridge": "",
"SandboxID": "be4dc476e331bb8ac857ec069d0aa8383d7700ba5b917c0fed44c59d0b042c99",
"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": "56456bd40ca98647fed01509408599accfadc7cb0f0077ea884b18fc009801b5",
"EndpointID": "e3e870245e2995fbfbae8706fa2daa19f3bf3d59d11d2f8ce2300f2b84b211e0",
"Gateway": "",
"IPAddress": "",
"IPPrefixLen": 0,
"IPv6Gateway": "",
"GlobalIPv6Address": "",
"GlobalIPv6PrefixLen": 0,
"MacAddress": "",
"DriverOpts": null
}
}
}
}
]
有人可以帮助我吗？
如果您使用的是 MacOS，则主机网络模式将无法使用，原因是 docker-desktop 使用底层 Linux 虚拟机来运行 docker 容器，因此该主机模式仅对该 VM 的网络有效不适用于主机（MacOS 机器）。
如果您想从 docker 容器访问主机（MacOS）上运行的服务，那么您需要使用以下主机名才能连接到该服务：
host.docker.internal
您将使用上述主机名代替
localhost127.0.0.1有关此问题的进一步讨论，请查看此 github 问题
Docker Desktop 在 4.34 及更高版本中添加了对“主机网络”的一般支持。要启用您必须登录的功能，请转到设置，在资源中选择网络，然后选中启用主机网络。必须重新启动 Docker Desktop 才能使更改生效
有关详细信息，请参阅文档