Node.js app on Heroku unable to connect to MongoDB Atlas (whitelisted all IPs, works fine locally)

Question

On Heroku, I get the following error when my app starts:

2021-01-22T02:27:08.944544+00:00 app[web.1]: {"name":"dpt-server","hostname":"9c28c922-9c1d-4118-81f3-f8a4e7dafceb","pid":44,"level":50,"msg":"db error, can't connect failed to connect to server [testdpt-shard-00-01.wfj1w.mongodb.net:27017] on first connect [MongoNetworkError: connection 4 to testdpt-shard-00-01.wfj1w.mongodb.net:27017 closed
    at TLSSocket.<anonymous> (/app/node_modules/mongodb/lib/core/connection/connection.js:356:9)
    at Object.onceWrapper (events.js:421:26)
    at TLSSocket.emit (events.js:314:20)
    at net.js:675:12
    at TCP.done (_tls_wrap.js:568:7) {
  errorLabels: [Array],
  [Symbol(mongoErrorContextSymbol)]: {}
}]","time":"2021-01-22T02:27:08.930Z","src":{"file":"/app/src/lib/mongoose.js","line":16},"v":0}
2021-01-22T02:27:08.945102+00:00 app[web.1]: [2021-01-22T02:27:08.930Z] ERROR: dpt-server/44 on 9c28c922-9c1d-4118-81f3-f8a4e7dafceb (/app/src/lib/mongoose.js:16):
2021-01-22T02:27:08.945105+00:00 app[web.1]:     db error, can't connect failed to connect to server [testdpt-shard-00-01.wfj1w.mongodb.net:27017] on first connect [MongoNetworkError: connection 4 to testdpt-shard-00-01.wfj1w.mongodb.net:27017 closed
2021-01-22T02:27:08.945106+00:00 app[web.1]:         at TLSSocket.<anonymous> (/app/node_modules/mongodb/lib/core/connection/connection.js:356:9)
2021-01-22T02:27:08.945107+00:00 app[web.1]:         at Object.onceWrapper (events.js:421:26)
2021-01-22T02:27:08.945108+00:00 app[web.1]:         at TLSSocket.emit (events.js:314:20)
2021-01-22T02:27:08.945109+00:00 app[web.1]:         at net.js:675:12
2021-01-22T02:27:08.945109+00:00 app[web.1]:         at TCP.done (_tls_wrap.js:568:7) {
2021-01-22T02:27:08.945109+00:00 app[web.1]:       errorLabels: [Array],
2021-01-22T02:27:08.945110+00:00 app[web.1]:       [Symbol(mongoErrorContextSymbol)]: {}
2021-01-22T02:27:08.945110+00:00 app[web.1]:     }]
2021-01-22T02:27:08.950681+00:00 app[web.1]: [2021-01-22T02:27:08.930Z] ERROR: dpt-server/44 on 9c28c922-9c1d-4118-81f3-f8a4e7dafceb (/app/src/lib/mongoose.js:16):
2021-01-22T02:27:08.950685+00:00 app[web.1]:     db error, can't connect failed to connect to server [testdpt-shard-00-01.wfj1w.mongodb.net:27017] on first connect [MongoNetworkError: connection 4 to testdpt-shard-00-01.wfj1w.mongodb.net:27017 closed
2021-01-22T02:27:08.950685+00:00 app[web.1]:         at TLSSocket.<anonymous> (/app/node_modules/mongodb/lib/core/connection/connection.js:356:9)
2021-01-22T02:27:08.950686+00:00 app[web.1]:         at Object.onceWrapper (events.js:421:26)
2021-01-22T02:27:08.950687+00:00 app[web.1]:         at TLSSocket.emit (events.js:314:20)
2021-01-22T02:27:08.950688+00:00 app[web.1]:         at net.js:675:12
2021-01-22T02:27:08.950688+00:00 app[web.1]:         at TCP.done (_tls_wrap.js:568:7) {
2021-01-22T02:27:08.950689+00:00 app[web.1]:       errorLabels: [Array],
2021-01-22T02:27:08.950689+00:00 app[web.1]:       [Symbol(mongoErrorContextSymbol)]: {}
2021-01-22T02:27:08.950690+00:00 app[web.1]:     }]

I've whitelisted 0.0.0.0/0 in Atlas, so it should be allowing all IPs. It runs fine locally. I've sifted through the MongoDB Atlas troubleshooting section for connections in great detail but I'm not sure where to go with this. Anyone have any idea what to make of this?

question from:https://stackoverflow.com/questions/65838775/node-js-app-on-heroku-unable-to-connect-to-mongodb-atlas-whitelisted-all-ips-w

Answer 1

Waitting for answers