Sample nginx + uWSGI stack for OpenShift
This is a collection of scripts that allows you to deploy a project running on a nginx+uWSGI stack on OpenShift.
In order to use this repository, you'll have to clone it and use it as the main git repository on a DIY OpenShift Cartridge.
First, create your app with
$ rhc app create myapp diy-0.1
Now, add this repository to the created git repo and pull from it:
$ cd myapp $ git remote add upstream https://github.com/fcoelho/nginxdjango-openshift $ git pull -s recursive -X theirs upstream master
As a last step before pushing your changes, you'll need to create the
application that will be served by the stack. A
app/wsgi.py script is
expected. Create it like the following:
$ mkdir app $ cat > app/wsgi.py << EOF def application(env, start_response): start_response('200 OK', [('Content-Type', 'text/html')]) return ['Hello world'] EOF $ git add app $ git commit -a -m 'sample application'
Now we're ready to push the changes to our OpenShift repository. Go get a coffee, the scripts will build nginx, Python, and uWSGI from source, it might take a while.
$ git push origin master
During the installation process, there will be some messages indicating progress. A small spinner is used to show that connectivity hasn't been lost.
After the installation is done, you can access your application at
$ curl myapp-<domain>.rhcloud.com Hello world
There is a video of this process on ASCII.IO. Note
that, although it is a simple process, building the software on the host
machines takes some time. The total running time of the above video is ~25min.
Feel free to skip through the
make ... parts until I don't upload a better
How it works
OpenShift expects DIY client applications to set up a HTTP server on
$OPENSHIFT_INTERNAL_IP:$OPENSHIFT_INTERNAL_PORT. We're using nginx as the
HTTP server, passing the request to the uWSGI server which then contacts our
OpenShift HTTP server --> nginx --> uWSGI --> application
.openshift/action_hooks/build script is responsible for building and
installing the dependencies we need, namely nginx, Python 2.7, uWSGI, and the
user packages listed in