部署到Heroku的Strapi在生产中崩溃了？

Question

我有一个应用程序，其中前端部署到Netlify，Strapi后端部署到Heroku。我最近将Strapi从v3.0.6升级到了v3.1.3。我以前在生产中使用PostgresQL，所以随着Strapi的升级，我也在尝试转移到MongoDB。

我正在尝试将我的后端部署到生产环境中，但是我不断收到503错误并且应用程序崩溃。您可以从下面的错误日志中看到连接到Mongo数据库存在问题。

以下是我在Heroku的相关日志：

2020-08-06T15:06:49.848463+00:00 app[web.1]: > backend@0.1.0 start /app
2020-08-06T15:06:49.848464+00:00 app[web.1]: > strapi start
2020-08-06T15:06:49.848465+00:00 app[web.1]:
2020-08-06T15:06:52.238840+00:00 app[web.1]: (node:23) Warning: Accessing non-existent property 'count' of module exports inside circular dependency
2020-08-06T15:06:52.238869+00:00 app[web.1]: (Use `node --trace-warnings ...` to show where the warning was created)
2020-08-06T15:06:52.239130+00:00 app[web.1]: (node:23) Warning: Accessing non-existent property 'findOne' of module exports inside circular dependency
2020-08-06T15:06:52.239199+00:00 app[web.1]: (node:23) Warning: Accessing non-existent property 'remove' of module exports inside circular dependency
2020-08-06T15:06:52.239276+00:00 app[web.1]: (node:23) Warning: Accessing non-existent property 'updateOne' of module exports inside circular dependency
2020-08-06T15:07:10.279519+00:00 heroku[router]: at=error code=H20 desc="App boot timeout" method=GET path="/" host=<app-name>.herokuapp.com request_id=9e81f113-1003-42f7-82e7-59296dc1f0f8 fwd="24.19.220.31" dyno= connect= service= status=503 bytes= protocol=https
2020-08-06T15:07:22.242572+00:00 app[web.1]: [2020-08-06T15:07:22.241Z] debug ⛔️ Server wasn't able to start properly.
2020-08-06T15:07:22.243944+00:00 app[web.1]: [2020-08-06T15:07:22.243Z] error Error connecting to the Mongo database. Server selection timed out after 30000 ms
2020-08-06T15:07:22.266318+00:00 app[web.1]: npm ERR! code ELIFECYCLE
2020-08-06T15:07:22.266611+00:00 app[web.1]: npm ERR! errno 1
2020-08-06T15:07:22.269156+00:00 app[web.1]: npm ERR! backend@0.1.0 start: `strapi start`
2020-08-06T15:07:22.269330+00:00 app[web.1]: npm ERR! Exit status 1
2020-08-06T15:07:22.269513+00:00 app[web.1]: npm ERR!
2020-08-06T15:07:22.269976+00:00 app[web.1]: npm ERR! Failed at the backend@0.1.0 start script.
2020-08-06T15:07:22.270129+00:00 app[web.1]: npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
2020-08-06T15:07:22.278069+00:00 app[web.1]:
2020-08-06T15:07:22.278314+00:00 app[web.1]: npm ERR! A complete log of this run can be found in:
2020-08-06T15:07:22.278417+00:00 app[web.1]: npm ERR!     /app/.npm/_logs/2020-08-06T15_07_22_271Z-debug.log
2020-08-06T15:07:22.355748+00:00 heroku[web.1]: Process exited with status 1
2020-08-06T15:07:22.394507+00:00 heroku[web.1]: State changed from starting to crashed
2020-08-06T15:07:23.802505+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=<app-name>.herokuapp.com request_id=f5876daf-f945-46b8-88c0-08a61106cfc5 fwd="24.19.220.31" dyno= connect= service= status=503 bytes= protocol=https

我在Heroku中设置了Mongo URI env变量，应用程序在本地运行良好。我在免费层使用Mongo Atlas，所以我想知道这是否与此有关？有人知道问题出在哪里吗？

Answer 1

在发表这篇文章之前，我花了24小时试图修复它，就这样——发表这篇文章半小时后——我修复了它，这要归功于这个SO回答。我需要将IP地址列入白名单，以便允许MongoDB和Heroku之间的连接！