This is a custom OpenShift cartridge providing MongoDB 3.4.x + WiredTiger storage engine.
Because the standard OpenShift MongoDB cartridge is stuck at 2.4.
When you need a quick and unsofisticated solution to run your application with the latest MongoDB version.
Using web console
Open your application in the web console, go to "See the list of cartridges you can add", paste the URL below in "Install your own cartridge" textbox at the bottom of the page and click "Next".
https://raw.githubusercontent.com/icflorescu/openshift-cartridge-mongodb/master/metadata/manifest.yml
Then you can use MONGODB_URL environment variable to connect from an application running in the main web cartridge.
To keep things flexible, the connection string stored in MONGODB_URL ends with / and does not include a database name. Use your application logic to name/create your database(s) as needed.
For instance, here's how you'd do it in a Node.js application using Mongoose ODM:
var mongoose = require('mongoose');
...
// Mongoose will create database_name if necessary
mongoose.connect(process.env.MONGODB_URL + 'database_name', { db: { nativeParser: true } });
Make sure you have rhc installed (see here).
If you want to add a MongoDB instance based on this cartridge to an existing application:
rhc cartridge-add https://raw.githubusercontent.com/icflorescu/openshift-cartridge-mongodb/master/metadata/manifest.yml \
--app appname
...where appname is the name of your application.
To create an app based on the standard Node.js v0.10 cartridge and this one, run:
rhc app create appname \
nodejs-0.10 \
https://raw.githubusercontent.com/icflorescu/openshift-cartridge-mongodb/master/metadata/manifest.yml
If you want to use the latest Node.js version, you'll have to use a custom Node.js cartridge as well:
rhc app create appname \
https://raw.githubusercontent.com/icflorescu/openshift-cartridge-nodejs/master/metadata/manifest.yml \
https://raw.githubusercontent.com/icflorescu/openshift-cartridge-mongodb/master/metadata/manifest.yml
- Using this cartridge to host your data does provide a cheap solution, but please understand that you'll be using it on your own responsibility.
WiredTigerengine is a memory-hungry beast and you could eventually run into problems. Use a specialized Database-as-a Service provider for critical data (mLab, Compose, etc.). - This is a lean cartridge. To save space, just
mongodis installed. No client libraries, nomongoconsole. If you need external access to your data, userhc port-forward. - By default, the underlying MongoDB instance will accept unauthenticated access, which should be fine for most typical usage scenarios. See the discussion here for more info.
- Can't think of a safe way to make this cartridge auto-updatable. For now we'll just have to use
mongodump, destroy the cartridge, install the new version, then do amongorestore. - Don't hesitate to make a pull-request with an updated version in this file if you notice this cartridge version is behind the latest stable official MongoDB linux binary.
Q: I'm getting the error Cannot download, must be smaller than 20480 bytes while trying to deploy the cartridge to OpenShift. What am I doing wrong?
A: You're probably trying to use the URL https://github.com/icflorescu/openshift-cartridge-mongodb instead of
https://raw.githubusercontent.com/icflorescu/openshift-cartridge-mongodb/master/metadata/manifest.yml. A common mistake for people not paying sufficient attention while trying to use a custom cartridge for the first time.
Q: How do I change the default mongod options?
A: ssh to the MongoDB gear, edit the control script with nano mongodb/bin/control and make sure to restart afterwards.
Q: How can I ssh to a MongoDB cartridge running in a secondary application gear?
A: You can discover the secondary gear URL by running rhc app show appname --gears.
Since you're here, chances are you might also be interested in this custom Node.js cartridge.
See contributors here.
If you find this repo useful, don't hesitate to give it a star and spread the word.
I'm getting lots of questions from people just learning to do web development or simply looking to solve a very specific problem they're dealing with. While I will answer some of them for the benefit of the community, please understand that open-source is a shared effort and it's definitely not about piggybacking on other people's work. On places like GitHub, that means raising issues is encouraged, but coming up with useful PRs is a lot better. If I'm willing to share some of my code for free, I'm doing it for a number of reasons: my own intellectual challenges, pride, arrogance, stubbornness to believe I'm bringing a contribution to common progress and freedom, etc. Your particular well-being is probably not one of those reasons. I'm not in the business of providing free consultancy, so if you need my help to solve your specific problem, there's a fee for that.
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