Docker：MongoDB与另一个Docker应用之间的连接问题难以实现。

huangapple
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英文:

Docker : impossible connection between MongoDB and another docker app

问题

我在使用Docker启动的MongoDB（端口：27017）之间遇到了连接问题，但是当我尝试启动我的应用程序（需要使用数据库来启动它）时，我卡在了这个错误上：MongoServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017。

我尝试了https://stackoverflow.com/questions/52417322/connecting-to-mongodb-docker-container-from-another-docker-container 上的解决方案，但仍然无法解决这个问题...

有人对这个问题有什么想法吗？

我尝试过使用在线数据库，但仍然出现错误（MongoServerError: bad auth : authentication failed），因为我希望它在我的服务器上启动，我不想花太多时间在这个解决方案上（即使它能够工作，这也不是情况）。

我尝试使用mongodb://myip:27017而不是mongodb://localhost:27017，但仍然遇到问题。

英文:

I'm having an issue with the connection between my MongoDB that I launched with docker (port:27017) but when I try to launch my app (the DB is needed for launching it), I am stuck with this error : MongoServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017.

I tried the solution at https://stackoverflow.com/questions/52417322/connecting-to-mongodb-docker-container-from-another-docker-container but sill could not figure how to solve this issue...

Anyone have a thought about this issue ?

docker run chat-ui       
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_\/\\\_____________\/\\\_____________\/\\\__/\\\\\\\\\\\\\\\_
_\///______________\///______________\///__\///////////////__
Runtime Edition
PM2 is a Production Process Manager for Node.js applications
with a built-in Load Balancer.
Start and Daemonize any application:
$ pm2 start app.js
Load Balance 4 instances of api.js:
$ pm2 start api.js -i 4
Monitor in production:
$ pm2 monitor
Make pm2 auto-boot at server restart:
$ pm2 startup
To go further checkout:
http://pm2.io/
-------------
pm2 launched in no-daemon mode (you can add DEBUG="*" env variable to get more messages)
2023-06-19T09:18:59: PM2 log: Launching in no daemon mode
2023-06-19T09:18:59: PM2 log: [PM2] Starting /app/build/index.js in cluster_mode (0 instance)
2023-06-19T09:18:59: PM2 log: App [index:0] starting in -cluster mode-
2023-06-19T09:18:59: PM2 log: App [index:0] online
2023-06-19T09:18:59: PM2 log: App [index:1] starting in -cluster mode-
2023-06-19T09:18:59: PM2 log: App [index:1] online
2023-06-19T09:18:59: PM2 log: App [index:2] starting in -cluster mode-
2023-06-19T09:18:59: PM2 log: App [index:2] online
2023-06-19T09:18:59: PM2 log: App [index:3] starting in -cluster mode-
2023-06-19T09:18:59: PM2 log: App [index:3] online
2023-06-19T09:18:59: PM2 log: [PM2] Done.
2023-06-19T09:18:59: PM2 log: ┌────┬──────────┬─────────────┬─────────┬─────────┬──────────┬────────┬──────┬───────────┬──────────┬──────────┬──────────┬──────────┐
│ id │ name     │ namespace   │ version │ mode    │ pid      │ uptime │ ↺    │ status    │ cpu      │ mem      │ user     │ watching │
├────┼──────────┼─────────────┼─────────┼─────────┼──────────┼────────┼──────┼───────────┼──────────┼──────────┼──────────┼──────────┤
│ 0  │ index    │ default     │ 0.3.0   │ cluster │ 19       │ 0s     │ 0    │ online    │ 0%       │ 61.7mb   │ root     │ disabled │
│ 1  │ index    │ default     │ 0.3.0   │ cluster │ 26       │ 0s     │ 0    │ online    │ 0%       │ 52.9mb   │ root     │ disabled │
│ 2  │ index    │ default     │ 0.3.0   │ cluster │ 33       │ 0s     │ 0    │ online    │ 0%       │ 51.0mb   │ root     │ disabled │
│ 3  │ index    │ default     │ 0.3.0   │ cluster │ 44       │ 0s     │ 0    │ online    │ 0%       │ 45.3mb   │ root     │ disabled │
└────┴──────────┴─────────────┴─────────┴─────────┴──────────┴────────┴──────┴───────────┴──────────┴──────────┴──────────┴──────────┘
2023-06-19T09:18:59: PM2 log: [--no-daemon] Continue to stream logs
2023-06-19T09:18:59: PM2 log: [--no-daemon] Exit on target PM2 exit pid=8
09:18:59 0|index  | Listening on 0.0.0.0:3000
09:18:59 1|index  | Listening on 0.0.0.0:3000
09:18:59 2|index  | Listening on 0.0.0.0:3000
09:18:59 3|index  | Listening on 0.0.0.0:3000
09:19:29 0|index  | MongoServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017
09:19:29 0|index  |     at Timeout._onTimeout (/app/node_modules/mongodb/lib/sdam/topology.js:277:38)
09:19:29 0|index  |     at listOnTimeout (node:internal/timers:573:17)
09:19:29 0|index  |     at process.processTimers (node:internal/timers:514:7) {
09:19:29 0|index  |   reason: TopologyDescription {
09:19:29 0|index  |     type: 'Unknown',
09:19:29 0|index  |     servers: Map(1) { 'localhost:27017' => [ServerDescription] },
09:19:29 0|index  |     stale: false,
09:19:29 0|index  |     compatible: true,
09:19:29 0|index  |     heartbeatFrequencyMS: 10000,
09:19:29 0|index  |     localThresholdMS: 15,
09:19:29 0|index  |     setName: null,
09:19:29 0|index  |     maxElectionId: null,
09:19:29 0|index  |     maxSetVersion: null,
09:19:29 0|index  |     commonWireVersion: 0,
09:19:29 0|index  |     logicalSessionTimeoutMinutes: null
09:19:29 0|index  |   },
09:19:29 0|index  |   code: undefined,
09:19:29 0|index  |   [Symbol(errorLabels)]: Set(0) {}
09:19:29 0|index  | }
09:19:29 1|index  | MongoServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017
09:19:29 1|index  |     at Timeout._onTimeout (/app/node_modules/mongodb/lib/sdam/topology.js:277:38)
09:19:29 1|index  |     at listOnTimeout (node:internal/timers:573:17)
09:19:29 1|index  |     at process.processTimers (node:internal/timers:514:7) {
09:19:29 1|index  |   reason: TopologyDescription {
09:19:29 1|index  |     type: 'Unknown',
09:19:29 1|index  |     servers: Map(1) { 'localhost:27017' => [ServerDescription] },
09:19:29 1|index  |     stale: false,
09:19:29 1|index  |     compatible: true,
09:19:29 1|index  |     heartbeatFrequencyMS: 10000,
09:19:29 1|index  |     localThresholdMS: 15,
09:19:29 1|index  |     setName: null,
09:19:29 1|index  |     maxElectionId: null,
09:19:29 1|index  |     maxSetVersion: null,
09:19:29 1|index  |     commonWireVersion: 0,
09:19:29 1|index  |     logicalSessionTimeoutMinutes: null
09:19:29 1|index  |   },
09:19:29 1|index  |   code: undefined,
09:19:29 1|index  |   [Symbol(errorLabels)]: Set(0) {}
09:19:29 1|index  | }
09:19:29 2|index  | MongoServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017
09:19:29 2|index  |     at Timeout._onTimeout (/app/node_modules/mongodb/lib/sdam/topology.js:277:38)
09:19:29 2|index  |     at listOnTimeout (node:internal/timers:573:17)
09:19:29 2|index  |     at process.processTimers (node:internal/timers:514:7) {
09:19:29 2|index  |   reason: TopologyDescription {
09:19:29 2|index  |     type: 'Unknown',
09:19:29 2|index  |     servers: Map(1) { 'localhost:27017' => [ServerDescription] },
09:19:29 2|index  |     stale: false,
09:19:29 2|index  |     compatible: true,
09:19:29 2|index  |     heartbeatFrequencyMS: 10000,
09:19:29 2|index  |     localThresholdMS: 15,
09:19:29 2|index  |     setName: null,
09:19:29 2|index  |     maxElectionId: null,
09:19:29 2|index  |     maxSetVersion: null,
09:19:29 2|index  |     commonWireVersion: 0,
09:19:29 2|index  |     logicalSessionTimeoutMinutes: null
09:19:29 2|index  |   },
09:19:29 2|index  |   code: undefined,
09:19:29 2|index  |   [Symbol(errorLabels)]: Set(0) {}
09:19:29 2|index  | }
09:19:29 3|index  | MongoServerSelectionError: connect ECONNREFUSED 127.0.0.1:27017
09:19:29 3|index  |     at Timeout._onTimeout (/app/node_modules/mongodb/lib/sdam/topology.js:277:38)
09:19:29 3|index  |     at listOnTimeout (node:internal/timers:573:17)
09:19:29 3|index  |     at process.processTimers (node:internal/timers:514:7) {
09:19:29 3|index  |   reason: TopologyDescription {
09:19:29 3|index  |     type: 'Unknown',
09:19:29 3|index  |     servers: Map(1) { 'localhost:27017' => [ServerDescription] },
09:19:29 3|index  |     stale: false,
09:19:29 3|index  |     compatible: true,
09:19:29 3|index  |     heartbeatFrequencyMS: 10000,
09:19:29 3|index  |     localThresholdMS: 15,
09:19:29 3|index  |     setName: null,
09:19:29 3|index  |     maxElectionId: null,
09:19:29 3|index  |     maxSetVersion: null,
09:19:29 3|index  |     commonWireVersion: 0,
09:19:29 3|index  |     logicalSessionTimeoutMinutes: null
09:19:29 3|index  |   },
09:19:29 3|index  |   code: undefined,
09:19:29 3|index  |   [Symbol(errorLabels)]: Set(0) {}
09:19:29 3|index  | }

I tried using an online DB but I was still getting an error (MongoServerError: bad auth : authentication failed) because I wanted it to launch on my server, I didn't wanted to spend too much time on this solution (even in the case it would be working, which was not the case).

I tried using mongodb://myip:27017 instead of mongodb://localhost:27017 yet, still having an issue.

答案1

得分: 1

当你在容器中使用localhost时，它并不代表你的个人电脑，在容器的上下文中，localhost表示容器本身。容器内部的服务在隔离的环境中运行。所以这就是为什么容器chat-ui无法通过localhost:27017连接到mongodb容器的原因。

连接不同容器的方法：

  • 你可以使用Docker网络。因为这允许容器在一个网络中相互通信。
  • 或者你可以使用Docker Compose来部署多个容器。
  • 还有另一种容器链接的方法，使用传统容器链接。但这不被推荐，因为它最终可能会被移除。

另外，参考以下链接：

希望这些信息能帮助你解决问题。

英文:

When you use localhost in your container, It doesn't mean your PC, in the context of a container localhost means the container itself. The services inside a container runs in an isolated environment.
So that's why the container chat-ui unable to connect with the mongodb container with localhost:27017.

The way to connect different containers

  • You can use Docker Networking. As this allows containers to communicate with each other in a network.
  • OR you can deploy multiple containers by using Docker compose
  • There is another approach for container linking with Legacy container links. But this is not recommended as it may eventually be removed

Also see these

Hope this will help you to resolve

答案2

得分: 0

你是否已将Mongo容器的27017端口暴露给主机？

尝试使用以下命令之一运行Mongo容器：

docker run -p 27017:27017 --name some-mongo -d mongo:tag

或者：

docker run --network="host" --name some-mongo -d mongo:tag
英文:

Have you exposed the mongo container's 27017 port to your host?

Try running the mongo container with either:

docker run -p 27017:27017 --name some-mongo -d mongo:tag

or:

docker run --network="host" --name some-mongo -d mongo:tag

huangapple
  • 本文由 发表于 2023年6月19日 18:08:38
  • 转载请务必保留本文链接：https://go.coder-hub.com/76505606.html
  • docker
  • mongodb
  • node.js
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