[英]Docker Cannot Resolve Hostname
每當我嘗試使用容器名稱向我的 API 發出 HTTP 請求時,我都會得到以下信息。
選項http://api:4505/user/sign-in net::ERR_NAME_NOT_RESOLVED
這是我的docker-compose
文件:
version: "3"
services:
mongodb:
image: mongo
container_name: mongo
ports:
- "27017:27017"
api:
image: registry.gitlab.com/darragh.oflah/api:latest
container_name: api
ports:
- "4505:4505"
links:
- mongodb
web:
image: registry.gitlab.com/darragh.oflah/web:latest
container_name: web
ports:
- "80:8080"
links:
- api
這是我運行sudo docker network inspect tmp_default
時得到的sudo docker network inspect tmp_default
所以看起來網絡設置正確
[
{
"Name": "tmp_default",
"Id": "75ab7c89cb5a80aa7eddd7c5a3f7f4aafb911cfe96a923ad3db2219552366fd7",
"Created": "2020-02-04T16:55:49.131485109Z",
"Scope": "local",
"Driver": "bridge",
"EnableIPv6": false,
"IPAM": {
"Driver": "default",
"Options": null,
"Config": [
{
"Subnet": "172.18.0.0/16",
"Gateway": "172.18.0.1"
}
]
},
"Internal": false,
"Attachable": true,
"Ingress": false,
"ConfigFrom": {
"Network": ""
},
"ConfigOnly": false,
"Containers": {
"6ae3db08be2ed22245a173a677ae1b0f28eca878aa84e43744a320589cbda5af": {
"Name": "mongo",
"EndpointID": "b399bb72f28b6d47a93927712a665dcc725d27a6ba2ee432e715db00c9cbc835",
"MacAddress": "02:42:ac:12:00:02",
"IPv4Address": "172.18.0.2/16",
"IPv6Address": ""
},
"fa7e4066e436181ce2991e048790f8de518af31fb97cf9351316ff8f41824449": {
"Name": "api",
"EndpointID": "bf8d071683bfa4ecbd215f3dd534d0e278702ed4377552ef242e5c65b01c3fa1",
"MacAddress": "02:42:ac:12:00:03",
"IPv4Address": "172.18.0.3/16",
"IPv6Address": ""
},
"fb544ef5389afd74d53f45d6de968008632b65340f161527a9c7aa4214aa7674": {
"Name": "web",
"EndpointID": "2dc3e8a452c241916a2e9f7e25b33ee7997fe2d25ec3543e5d34e888e50d905c",
"MacAddress": "02:42:ac:12:00:04",
"IPv4Address": "172.18.0.4/16",
"IPv6Address": ""
}
},
"Options": {},
"Labels": {
"com.docker.compose.network": "default",
"com.docker.compose.project": "tmp",
"com.docker.compose.version": "1.21.2"
}
}
]
在網絡選項卡中,請求說失敗,這向我表明請求根本無法離開容器。
您的撰寫文件會創建一個 docker 網絡。 您正在該網絡上的容器中運行“web”。 docker 網絡中的所有容器都可以通過主機名訪問其他容器。 但是,瀏覽器正在您的主機上運行。 您的主機不在 docker 網絡中。 因此,您的瀏覽器將無法通過主機名訪問 api 容器。 如果您在瀏覽器 url 欄中鍵入http://api:4505/user/sign-in
,它會做同樣的事情,您也會收到錯誤消息。
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