Koku's goal is to provide an open source solution for cost management of cloud and hybrid cloud environments. This is offered via a web interface that exposes resource consumption and cost data in easily digestible and filterable views. The project also aims to provide insight into this data and ultimately provide suggested optimizations for reducing cost and eliminating unnecessary resource usage.
Full documentation is available through readthedocs.
This is a Python project developed using Python 3.6. Make sure you have at least this version installed.
To get started developing against Koku first clone a local copy of the git repository.
git clone https://github.com/project-koku/koku
Developing inside a virtual environment is recommended. A Pipfile is provided. Pipenv is recommended for combining virtual environment (virtualenv) and dependency management (pip). To install pipenv, use pip
pip3 install pipenv
Then project dependencies and a virtual environment can be created using
pipenv install --dev
To activate the virtual environment run
Please refer to Working with Openshift.
If deploying with Openshift seems overly complex you can try an alternate local environment where you will need to install and setup some of the dependencies and configuration.
This project is developed using the Django web framework. Many configuration settings can be read in from a .env file. An example file .env.example is provided in the repository. To use the defaults simply
cp .env.example .env
Modify as you see fit.
PostgreSQL is used as the database backend for Koku. A docker-compose file is provided for creating a local database container. If modifications were made to the .env file the docker-compose file will need to be modified to ensure matching database credentials. Several commands are available for interacting with the database.
# This will launch a Postgres container make start-db # This will run Django's migrations against the database make run-migrations # This will stop and remove a currently running database and run the above commands make reinitdb
Assuming the default .env file values are used, to access the database directly using psql run
psql koku -U koku -h localhost -p 15432
There is a known limitation with docker-compose and Linux environments with SELinux enabled. You may see the following error during the postgres container deployment:
"mkdir: cannot create directory '/var/lib/pgsql/data/userdata': Permission denied" can be resolved by granting ./pg_data ownership permissions to uid:26 (postgres user in centos/postgresql-96-centos7)
If a docker container running Postgres is not feasible, it is possible to run Postgres locally as documented in the Postgres tutorial. The default port for local Postgres installations is 5432. Make sure to modify the .env file accordingly. To initialize the database run
To run a local dev Django server you can use
API Documentation Generation
To generate and host the API documentation locally you need to Install APIDoc.
Generate the project API documenttion by running the following command
In order to host the docs locally you need to collect the static files
Now start the server with as described above and point your browser to http://127.0.0.1:8000/apidoc/index.html.
Testing and Linting
Koku uses tox to standardize the environment used when running tests. Essentially, tox manages its own virtual environment and a copy of required dependencies to run tests. To ensure a clean tox environment run
This will rebuild the tox virtual env and then run all tests.
To run unit tests specifically:
tox -e py36
To lint the code base
tox -e lint
Please refer to Contributing.