Connect MongoDB DATABASE_URL on the App Platform

I have been trying everything to get my app to connect to the managed mongodb database. I have the client (app), server and the mongodb all configured in the same app. I have connected to the db just fine from my local machine with the certificate and everything.

In the env settings for the server, DO added one that says DATABASE_URL and the value is within ${db.DATABASE_URL} and another with ${db-mongodb.DATABASE_URL}. I pointed my server to connect with this env in the code and it seems to try to pull it out, but just won’t connect. I have trusted sources all set up.

First error I was getting was: “self signed certificate in certificate chain” Lastest error is: “All values of tls and ssl must be the same”

I have messed around and my latest attempt is like this:


locally, connecting I can use the following and it connects: mongodb+srv://username:${process.env.MONGOPWD}${process.env.MONGOCRT}

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Bobby Iliev
Site Moderator
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July 11, 2022

Hi there,

You need to actually pass the path to the certificate file rather than the certificate string itself.

One way to do that is by creating the file first in your application’s code before actually initializing the MongoDB connection. For example:

fs.writeFileSync(path.resolve(__dirname, ""), process.env.CA_CERT)

Then pass the file to the connection string.

Hope that this helps!



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