247 lines
8.3 KiB
Markdown
247 lines
8.3 KiB
Markdown
# Koding & GitLab
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>**Notes:**
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- **As of GitLab 10.0, the Koding integration is deprecated and will be removed
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in a future version. The option to configure it is removed from GitLab's admin
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area.**
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- [Introduced][ce-5909] in GitLab 8.11.
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This document will guide you through installing and configuring Koding with
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GitLab.
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First of all, to be able to use Koding and GitLab together you will need public
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access to your server. This allows you to use single sign-on from GitLab to
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Koding and using vms from cloud providers like AWS. Koding has a registry for
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VMs, called Kontrol and it runs on the same server as Koding itself, VMs from
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cloud providers register themselves to Kontrol via the agent that we put into
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provisioned VMs. This agent is called Klient and it provides Koding to access
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and manage the target machine.
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Kontrol and Klient are based on another technology called
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[Kite](https://github.com/koding/kite), that we have written at Koding. Which is a
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microservice framework that allows you to develop microservices easily.
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## Requirements
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### Hardware
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Minimum requirements are;
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- 2 cores CPU
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- 3G RAM
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- 10G Storage
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If you plan to use AWS to install Koding it is recommended that you use at
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least a `c3.xlarge` instance.
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### Software
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- [Git](https://git-scm.com)
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- [Docker](https://www.docker.com)
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- [docker-compose](https://www.docker.com/products/docker-compose)
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Koding can run on most of the UNIX based operating systems, since it's shipped
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as containerized with Docker support, it can work on any operating system that
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supports Docker.
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Required services are:
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- **PostgreSQL** - Kontrol and Service DB provider
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- **MongoDB** - Main DB provider the application
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- **Redis** - In memory DB used by both application and services
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- **RabbitMQ** - Message Queue for both application and services
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which are also provided as a Docker container by Koding.
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## Getting Started with Development Versions
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### Koding
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You can run `docker-compose` environment for developing koding by
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executing commands in the following snippet.
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```bash
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git clone https://github.com/koding/koding.git
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cd koding
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docker-compose -f docker-compose-init.yml run init
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docker-compose up
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```
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This should start koding on `localhost:8090`.
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By default there is no team exists in Koding DB. You'll need to create a team
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called `gitlab` which is the default team name for GitLab integration in the
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configuration. To make things in order it's recommended to create the `gitlab`
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team first thing after setting up Koding.
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### GitLab
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To install GitLab to your environment for development purposes it's recommended
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to use GitLab Development Kit which you can get it from
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[here](https://gitlab.com/gitlab-org/gitlab-development-kit).
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After all those steps, gitlab should be running on `localhost:3000`
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## Integration
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Integration includes following components;
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- Single Sign On with OAuth from GitLab to Koding
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- System Hook integration for handling GitLab events on Koding
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(`project_created`, `user_joined` etc.)
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- Service endpoints for importing/executing stacks from GitLab to Koding
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(`Run/Try on IDE (Koding)` buttons on GitLab Projects, Issues, MRs)
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As it's pointed out before, you will need public access to this machine that
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you've installed Koding and GitLab on. Better to use a domain but a static IP
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is also fine.
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For IP based installation you can use [xip.io](https://xip.io) service which is
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free and provides DNS resolution to IP based requests like following;
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- 127.0.0.1.xip.io -> resolves to 127.0.0.1
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- foo.bar.baz.127.0.0.1.xip.io -> resolves to 127.0.0.1
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- and so on...
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As Koding needs subdomains for team names; `foo.127.0.0.1.xip.io` requests for
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a running koding instance on `127.0.0.1` server will be handled as `foo` team
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requests.
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### GitLab Side
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You need to enable Koding integration from Settings under Admin Area. To do
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that login with an Admin account and do followings;
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- open [http://127.0.0.1:3000/admin/application_settings](http://127.0.0.1:3000/admin/application_settings)
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- scroll to bottom of the page until Koding section
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- check `Enable Koding` checkbox
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- provide GitLab team page for running Koding instance as `Koding URL`*
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* For `Koding URL` you need to provide the gitlab integration enabled team on
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your Koding installation. Team called `gitlab` has integration on Koding out
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of the box, so if you didn't change anything your team on Koding should be
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`gitlab`.
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So, if your Koding is running on `http://1.2.3.4.xip.io:8090` your URL needs
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to be `http://gitlab.1.2.3.4.xip.io:8090`. You need to provide the same host
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with your Koding installation here.
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#### Registering Koding for OAuth integration
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We need `Application ID` and `Secret` to enable login to Koding via GitLab
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feature and to do that you need to register running Koding as a new application
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to your running GitLab application. Follow
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[these](http://docs.gitlab.com/ce/integration/oauth_provider.html) steps to
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enable this integration.
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Redirect URI should be `http://gitlab.127.0.0.1:8090/-/oauth/gitlab/callback`
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which again you need to _replace `127.0.0.1` with your instance public IP._
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Take a copy of `Application ID` and `Secret` that is generated by the GitLab
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application, we will need those on _Koding Part_ of this guide.
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#### Registering system hooks to Koding (optional)
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Koding can take actions based on the events generated by GitLab application.
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This feature is still in progress and only following events are processed by
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Koding at the moment;
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- user_create
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- user_destroy
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All system events are handled but not implemented on Koding side.
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To enable this feature you need to provide a `URL` and a `Secret Token` to your
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GitLab application. Open your admin area on your GitLab app from
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[http://127.0.0.1:3000/admin/hooks](http://127.0.0.1:3000/admin/hooks)
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and provide `URL` as `http://gitlab.127.0.0.1:8090/-/api/gitlab` which is the
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endpoint to handle GitLab events on Koding side. Provide a `Secret Token` and
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keep a copy of it, we will need it on _Koding Part_ of this guide.
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_(replace `127.0.0.1` with your instance public IP)_
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### Koding Part
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If you followed the steps in GitLab part we should have followings to enable
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Koding part integrations;
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- `Application ID` and `Secret` for OAuth integration
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- `Secret Token` for system hook integration
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- Public address of running GitLab instance
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#### Start Koding with GitLab URL
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Now we need to configure Koding with all this information to get things ready.
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If it's already running please stop koding first.
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##### From command-line
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Replace followings with the ones you got from GitLab part of this guide;
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```bash
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cd koding
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docker-compose run \
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--service-ports backend \
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/opt/koding/scripts/bootstrap-container build \
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--host=**YOUR_IP**.xip.io \
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--gitlabHost=**GITLAB_IP** \
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--gitlabPort=**GITLAB_PORT** \
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--gitlabToken=**SECRET_TOKEN** \
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--gitlabAppId=**APPLICATION_ID** \
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--gitlabAppSecret=**SECRET**
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```
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##### By updating configuration
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Alternatively you can update `gitlab` section on
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`config/credentials.default.coffee` like following;
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```
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gitlab =
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host: '**GITLAB_IP**'
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port: '**GITLAB_PORT**'
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applicationId: '**APPLICATION_ID**'
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applicationSecret: '**SECRET**'
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team: 'gitlab'
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redirectUri: ''
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systemHookToken: '**SECRET_TOKEN**'
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hooksEnabled: yes
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```
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and start by only providing the `host`;
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```bash
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cd koding
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docker-compose run \
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--service-ports backend \
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/opt/koding/scripts/bootstrap-container build \
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--host=**YOUR_IP**.xip.io \
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```
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#### Enable Single Sign On
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Once you restarted your Koding and logged in with your username and password
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you need to activate oauth authentication for your user. To do that
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- Navigate to Dashboard on Koding from;
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`http://gitlab.**YOUR_IP**.xip.io:8090/Home/my-account`
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- Scroll down to Integrations section
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- Click on toggle to turn On integration in GitLab integration section
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This will redirect you to your GitLab instance and will ask your permission (
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if you are not logged in to GitLab at this point you will be redirected after
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login) once you accept you will be redirected to your Koding instance.
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From now on you can login by using `SIGN IN WITH GITLAB` button on your Login
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screen in your Koding instance.
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[ce-5909]: https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/5909
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