How to create multiple mongoDB databases and share them on heroku?

Question

I've popped into console and ran the "heroku addons:add mongohq:free" which added an environment variable: ENV['MONGOHQ_URL']. It is a url that looks like this:

mongodb://heroku:xxxxxxxxxxxxxxxxxxxxxxxxx@staff.mongohq.com:10059/appxxxxxx

I want to be able to use (and share) TWO mongodb instances. Running addons:add mongohq:free on the same app fails saying that the addon is already present.

Do I have to create a separate, blank app and just use the ENV variable from it?

Finally, is it possible to share these urls between apps?

score 1 · Accepted Answer · answered Jul 13 '12 at 17:22

1

To have multiple Mongo instances, you can either: * Create another account on MongoHQ or another provider * Create your own server and install mongo on it with authentication and multiple DBs

You then would need to add environmental variables for as many mongo DB's as you want.

Then, your application would need to know which MongoDB to connect to, under whichever circumstances are applicable in your app.

Note: you can replace Mongo with Postgres or MySQL above and its the exact same procedure.

And yes, you can share these between apps -- simple set the environment variable to match and you're good to go.

answered Jul 13 '12 at 17:22

Jesse Wolgamott

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Are those db addresses not password-protected somehow? Or are they protected by the fact nobody's supposed to know them but the admin? :) – dsp_099 Jul 13 '12 at 17:42
@dsp_099 they are protected by the username and password present in the URL – Jesse Wolgamott Jul 13 '12 at 20:57

How to create multiple mongoDB databases and share them on heroku?

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