docker 無法從本地主機訪問容器

Question

我無法從我的主機訪問容器應用程序。 我希望點擊http://localhost:3001/demo並返回一個簡單的文本，但容器似乎無法訪問。 沒有防火牆處於活動狀態。 它只是我為測試而構建的一個簡單的 ExpressJS 應用程序。 我正在運行帶有 Hyper-V 的 Windows 10 Pro。

此外，在端口 80 上運行一個簡單的 nginx 工作正常。 ( docker run nginx -p 80:80 )

這是docker version的結果

Client: Docker Engine - Community
 Version:           19.03.8
 API version:       1.40
 Go version:        go1.12.17
 Git commit:        afacb8b
 Built:             Wed Mar 11 01:23:10 2020
 OS/Arch:           windows/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          19.03.8
  API version:      1.40 (minimum version 1.12)
  Go version:       go1.12.17
  Git commit:       afacb8b
  Built:            Wed Mar 11 01:29:16 2020
  OS/Arch:          linux/amd64
  Experimental:     false
 containerd:
  Version:          v1.2.13
  GitCommit:        7ad184331fa3e55e52b890ea95e65ba581ae3429
 runc:
  Version:          1.0.0-rc10
  GitCommit:        dc9208a3303feef5b3839f4323d9beb36df0a9dd
 docker-init:
  Version:          0.18.0
  GitCommit:        fec3683

在代碼和 dockerfile 下面（它在沒有 docker 的情況下工作得很好）

// index.js
const app = require('express')();

app.get('/demo', (req, res) => res.json('Demo!'));

const server = app.listen(process.env.PORT, () => {
    console.log(`Listening on ${server.address().address}:${server.address().port}`);
});

// Dockerfile
FROM node:latest

WORKDIR /src

ENV PORT=3001

COPY  ["express-app", "."]

EXPOSE 3001

ENTRYPOINT ["node", "index.js"]

我通過docker build -t express -f Dockerfile .

我通過docker run express -p 3001:3001運行容器

docker ps
4840aa7e327d  express  "node index.js -p 30…"  59 seconds ago  Up 58 seconds  3001/tcp wonderful_easley

docker logs 4840aa7e327d
Listening on :::3001

通過執行docker inspect 4840...容器docker inspect 4840...我得到

 [ { "Id": "4840aa7e327d425d5005d602baf28e8c5f00970e281660f567f340bf7bba3264", "Created": "2020-03-24T04:56:10.774169154Z", "Path": "node", "Args": [ "index.js", "-p", "3001:3001" ], "State": { "Status": "running", "Running": true, "Paused": false, "Restarting": false, "OOMKilled": false, "Dead": false, "Pid": 2467, "ExitCode": 0, "Error": "", "StartedAt": "2020-03-24T04:56:11.148441022Z", "FinishedAt": "0001-01-01T00:00:00Z" }, "Image": "sha256:9fab74e6a051386c4f0820423c35b67565b1d80117a95930e7bf49be58cfac07", "ResolvConfPath": "/var/lib/docker/containers/4840aa7e327d425d5005d602baf28e8c5f00970e281660f567f340bf7bba3264/resolv.conf", "HostnamePath": "/var/lib/docker/containers/4840aa7e327d425d5005d602baf28e8c5f00970e281660f567f340bf7bba3264/hostname", "HostsPath": "/var/lib/docker/containers/4840aa7e327d425d5005d602baf28e8c5f00970e281660f567f340bf7bba3264/hosts", "LogPath": "/var/lib/docker/containers/4840aa7e327d425d5005d602baf28e8c5f00970e281660f567f340bf7bba3264/4840aa7e327d425d5005d602baf28e8c5f00970e281660f567f340bf7bba3264-json.log", "Name": "/wonderful_easley", "RestartCount": 0, "Driver": "overlay2", "Platform": "linux", "MountLabel": "", "ProcessLabel": "", "AppArmorProfile": "", "ExecIDs": null, "HostConfig": { "Binds": null, "ContainerIDFile": "", "LogConfig": { "Type": "json-file", "Config": {} }, "NetworkMode": "default", "PortBindings": {}, "RestartPolicy": { "Name": "no", "MaximumRetryCount": 0 }, "AutoRemove": false, "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": [ 40, 158 ], "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/overlay2/673afc4ba0603064a079e0838e3d3993631fbba6e24f5b76f04f371becd78fb5-init/diff:/var/lib/docker/overlay2/169bcc523e81d71036e2795bf43b93528861b410af969517ed2f70d30f7f10d6/diff:/var/lib/docker/overlay2/c26dd28589075e2cd12a52a2738924325da791e781f2cb283451a8d6a26fe1b9/diff:/var/lib/docker/overlay2/c81288f5d63b293cd7fbd2cf566fefbbb805fe59d8c3ffb17de37ca95ba6254b/diff:/var/lib/docker/overlay2/e113b592e8a485f656fda0974319bc496a7422c9a7d593dcd09a4bb9651bc7ff/diff:/var/lib/docker/overlay2/003113bde6da11ff5455dc2c3ba4d106c36cbd0f3d1b3e82d21b5458041ef3ac/diff:/var/lib/docker/overlay2/38c50afa09595d151f3af0bf2857e93e37ac7a4142e74130b6832f3f10039b03/diff:/var/lib/docker/overlay2/172d1d4718751de9e179f7a7f05ac7b4caef6264c8f8b1b67c51b8241984ab36/diff:/var/lib/docker/overlay2/15bd99445df3d363b6061a733f69d79dba1fc01268b6fa8c8237a5efedf69479/diff:/var/lib/docker/overlay2/68c2b9f8844e997b5406a4250aee4f099394faeada3bcc0046204d3d3ac39ef5/diff:/var/lib/docker/overlay2/6f80954a2a8f4d991965a6538d9521a9ce281589b26e2f228419536a5cc199f5/diff:/var/lib/docker/overlay2/bf0c070105eab104ddd45a1cc7950f80493e394877faa77e1c9f4c52ff2a1967/diff", "MergedDir": "/var/lib/docker/overlay2/673afc4ba0603064a079e0838e3d3993631fbba6e24f5b76f04f371becd78fb5/merged", "UpperDir": "/var/lib/docker/overlay2/673afc4ba0603064a079e0838e3d3993631fbba6e24f5b76f04f371becd78fb5/diff", "WorkDir": "/var/lib/docker/overlay2/673afc4ba0603064a079e0838e3d3993631fbba6e24f5b76f04f371becd78fb5/work" }, "Name": "overlay2" }, "Mounts": [], "Config": { "Hostname": "4840aa7e327d", "Domainname": "", "User": "", "AttachStdin": false, "AttachStdout": true, "AttachStderr": true, "ExposedPorts": { "3001/tcp": {} }, "Tty": false, "OpenStdin": false, "StdinOnce": false, "Env": [ "PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin", "NODE_VERSION=13.10.1", "YARN_VERSION=1.22.0", "PORT=3001" ], "Cmd": [ "-p", "3001:3001" ], "Image": "express", "Volumes": null, "WorkingDir": "/src", "Entrypoint": [ "node", "index.js" ], "OnBuild": null, "Labels": {} }, "NetworkSettings": { "Bridge": "", "SandboxID": "bafc5bbf61d4c3aef3450caa52479afd9c6a264a89c394d1066b257bf6317768", "HairpinMode": false, "LinkLocalIPv6Address": "", "LinkLocalIPv6PrefixLen": 0, "Ports": { "3001/tcp": null }, "SandboxKey": "/var/run/docker/netns/bafc5bbf61d4", "SecondaryIPAddresses": null, "SecondaryIPv6Addresses": null, "EndpointID": "86223acb4e1afeb9069d3f6af2f1cbfe59997e21889f6984c60b0cda0d565167", "Gateway": "172.17.0.1", "GlobalIPv6Address": "", "GlobalIPv6PrefixLen": 0, "IPAddress": "172.17.0.2", "IPPrefixLen": 16, "IPv6Gateway": "", "MacAddress": "02:42:ac:11:00:02", "Networks": { "bridge": { "IPAMConfig": null, "Links": null, "Aliases": null, "NetworkID": "32ae384f0621d25edcf263636527296f63474322b9bc6b12efe6867d8efd120d", "EndpointID": "86223acb4e1afeb9069d3f6af2f1cbfe59997e21889f6984c60b0cda0d565167", "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 } } } } ]

更新：容器 IP 地址信息：

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: tunl0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN group default qlen 1000
    link/ipip 0.0.0.0 brd 0.0.0.0
3: ip6tnl0@NONE: <NOARP> mtu 1452 qdisc noop state DOWN group default qlen 1000
    link/tunnel6 :: brd ::
8: eth0@if9: <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

從容器中，我可以 ping 主機。

Answer 1

嘗試禁用防火牆。

我建議，轉到設置並檢查狀態並將連接屬性更改為私有並僅禁用私有連接防火牆。

我有同樣的錯誤，它可以完美地禁用防火牆。

Answer 2

嘗試使用主機網絡運行容器

docker run express --network 主機