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diff --git a/doc/integration/koding.md b/doc/integration/koding.md new file mode 100644 index 00000000000..53450b6d048 --- /dev/null +++ b/doc/integration/koding.md @@ -0,0 +1,239 @@ +# Koding & GitLab + +This document will guide you through installing and configuring Koding with +GitLab. + +First of all, to be able to use Koding and GitLab together you will need public +access to your server. This allows you to use single sign-on from GitLab to +Koding and using vms from cloud providers like AWS. Koding has a registry for +VMs, called Kontrol and it runs on the same server as Koding itself, VMs from +cloud providers register themselves to Kontrol via the agent that we put into +provisioned VMs. This agent is called Klient and it provides Koding to access +and manage the target machine. + +Kontrol and Klient are based on another technology called +[Kite](github.com/koding/kite), that we have written at Koding. Which is a +microservice framework that allows you to develop microservices easily. + + +## Requirements + +### Hardware + +Minimum requirements are; + + - 2 cores CPU + - 3G RAM + - 10G Storage + +If you plan to use AWS to install Koding it is recommended that you use at +least a `c3.xlarge` instance. + +### Software + + - [git](https://git-scm.com) + - [docker](https://www.docker.com) + - [docker-compose](https://www.docker.com/products/docker-compose) + +Koding can run on most of the UNIX based operating systems, since it's shipped +as containerized with Docker support, it can work on any operating system that +supports Docker. + +Required services are; + + - PostgreSQL # Kontrol and Service DB provider + - MongoDB # Main DB provider the application + - Redis # In memory DB used by both application and services + - RabbitMQ # Message Queue for both application and services + +which are also provided as a Docker container by Koding. + + +## Getting Started with Development Versions + + +### Koding + +You can run `docker-compose` environment for developing koding by +executing commands in the following snippet. + +```bash +git clone https://github.com/koding/koding.git +cd koding +docker-compose up +``` + +This should start koding on `localhost:8090`. + +By default there is no team exists in Koding DB. You'll need to create a team +called `gitlab` which is the default team name for GitLab integration in the +configuration. To make things in order it's recommended to create the `gitlab` +team first thing after setting up Koding. + + +### GitLab + +To install GitLab to your environment for development purposes it's recommended +to use GitLab Development Kit which you can get it from +[here](https://gitlab.com/gitlab-org/gitlab-development-kit). + +After all those steps, gitlab should be running on `localhost:3000` + + +## Integration + +Integration includes following components; + + - Single Sign On with OAuth from GitLab to Koding + - System Hook integration for handling GitLab events on Koding + (`project_created`, `user_joined` etc.) + - Service endpoints for importing/executing stacks from GitLab to Koding + (`Run/Try on IDE (Koding)` buttons on GitLab Projects, Issues, MRs) + +As it's pointed out before, you will need public access to this machine that +you've installed Koding and GitLab on. Better to use a domain but a static IP +is also fine. + +For IP based installation you can use [xip.io](https://xip.io) service which is +free and provides DNS resolution to IP based requests like following; + + - 127.0.0.1.xip.io -> resolves to 127.0.0.1 + - foo.bar.baz.127.0.0.1.xip.io -> resolves to 127.0.0.1 + - and so on... + +As Koding needs subdomains for team names; `foo.127.0.0.1.xip.io` requests for +a running koding instance on `127.0.0.1` server will be handled as `foo` team +requests. + + +### GitLab Side + +You need to enable Koding integration from Settings under Admin Area. To do +that login with an Admin account and do followings; + + - open [http://127.0.0.1:3000/admin/application_settings](http://127.0.0.1:3000/admin/application_settings) + - scroll to bottom of the page until Koding section + - check `Enable Koding` checkbox + - provide GitLab team page for running Koding instance as `Koding URL`* + +* For `Koding URL` you need to provide the gitlab integration enabled team on +your Koding installation. Team called `gitlab` has integration on Koding out +of the box, so if you didn't change anything your team on Koding should be +`gitlab`. + +So, if your Koding is running on `http://1.2.3.4.xip.io:8090` your URL needs +to be `http://gitlab.1.2.3.4.xip.io:8090`. You need to provide the same host +with your Koding installation here. + + +#### Registering Koding for OAuth integration + +We need `Application ID` and `Secret` to enable login to Koding via GitLab +feature and to do that you need to register running Koding as a new application +to your running GitLab application. Follow +[these](http://docs.gitlab.com/ce/integration/oauth_provider.html) steps to +enable this integration. + +Redirect URI should be `http://gitlab.127.0.0.1:8090/-/oauth/gitlab/callback` +which again you need to _replace `127.0.0.1` with your instance public IP._ + +Take a copy of `Application ID` and `Secret` that is generated by the GitLab +application, we will need those on _Koding Part_ of this guide. + + +#### Registering system hooks to Koding (optional) + +Koding can take actions based on the events generated by GitLab application. +This feature is still in progress and only following events are processed by +Koding at the moment; + + - user_create + - user_destroy + +All system events are handled but not implemented on Koding side. + +To enable this feature you need to provide a `URL` and a `Secret Token` to your +GitLab application. Open your admin area on your GitLab app from +[http://127.0.0.1:3000/admin/hooks](http://127.0.0.1:3000/admin/hooks) +and provide `URL` as `http://gitlab.127.0.0.1:8090/-/api/gitlab` which is the +endpoint to handle GitLab events on Koding side. Provide a `Secret Token` and +keep a copy of it, we will need it on _Koding Part_ of this guide. + +_(replace `127.0.0.1` with your instance public IP)_ + + +### Koding Part + +If you followed the steps in GitLab part we should have followings to enable +Koding part integrations; + + - `Application ID` and `Secret` for OAuth integration + - `Secret Token` for system hook integration + - Public address of running GitLab instance + + +#### Start Koding with GitLab URL + +Now we need to configure Koding with all this information to get things ready. +If it's already running please stop koding first. + +##### From command-line + +Replace followings with the ones you got from GitLab part of this guide; + +```bash +cd koding +docker-compose run \ + --service-ports backend \ + /opt/koding/scripts/bootstrap-container build \ + --host=**YOUR_IP**.xip.io \ + --gitlabHost=**GITLAB_IP** \ + --gitlabPort=**GITLAB_PORT** \ + --gitlabToken=**SECRET_TOKEN** \ + --gitlabAppId=**APPLICATION_ID** \ + --gitlabAppSecret=**SECRET** +``` + +##### By updating configuration + +Alternatively you can update `gitlab` section on +`config/credentials.default.coffee` like following; + +``` +gitlab = + host: '**GITLAB_IP**' + port: '**GITLAB_PORT**' + applicationId: '**APPLICATION_ID**' + applicationSecret: '**SECRET**' + team: 'gitlab' + redirectUri: '' + systemHookToken: '**SECRET_TOKEN**' + hooksEnabled: yes +``` + +and start by only providing the `host`; + +```bash +cd koding +docker-compose run \ + --service-ports backend \ + /opt/koding/scripts/bootstrap-container build \ + --host=**YOUR_IP**.xip.io \ +``` + +#### Enable Single Sign On + +Once you restarted your Koding and logged in with your username and password +you need to activate oauth authentication for your user. To do that + + - Navigate to Dashboard on Koding from; + `http://gitlab.**YOUR_IP**.xip.io:8090/Home/my-account` + - Scroll down to Integrations section + - Click on toggle to turn On integration in GitLab integration section + +This will redirect you to your GitLab instance and will ask your permission ( +if you are not logged in to GitLab at this point you will be redirected after +login) once you accept you will be redirected to your Koding instance. + +From now on you can login by using `SIGN IN WITH GITLAB` button on your Login +screen in your Koding instance. |