Merge branch 'docs/ci-dpl-example' into 'master'
Update dpl CI example Closes #3129 See merge request !9872
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## Using Dpl as deployment tool
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Dpl (dee-pee-ell) is a deploy tool made for continuous deployment that's developed and used by Travis CI, but can also be used with GitLab CI.
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# Using Dpl as deployment tool
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**We recommend to use Dpl, if you're deploying to any of these of these services: https://github.com/travis-ci/dpl#supported-providers**.
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[Dpl](https://github.com/travis-ci/dpl) (dee-pee-ell) is a deploy tool made for
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continuous deployment that's developed and used by Travis CI, but can also be
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used with GitLab CI.
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### Requirements
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To use Dpl you need at least Ruby 1.8.7 with ability to install gems.
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>**Note:**
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We recommend to use Dpl if you're deploying to any of these of these services:
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https://github.com/travis-ci/dpl#supported-providers.
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## Requirements
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To use Dpl you need at least Ruby 1.9.3 with ability to install gems.
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## Basic usage
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Dpl can be installed on any machine with:
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### Basic usage
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The Dpl can be installed on any machine with:
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```
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gem install dpl
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```
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This allows you to test all commands from your shell, rather than having to test it on a CI server.
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This allows you to test all commands from your local terminal, rather than
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having to test it on a CI server.
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If you don't have Ruby installed you can do it on Debian-compatible Linux with:
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```
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apt-get update
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apt-get install ruby-dev
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For example if you want to use it to deploy your application to heroku, you need to specify `heroku` as provider, specify `api-key` and `app`.
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There's more and all possible parameters can be found here: https://github.com/travis-ci/dpl#heroku
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```
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```yaml
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staging:
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type: deploy
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stage: deploy
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script:
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- gem install dpl
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- dpl --provider=heroku --app=my-app-staging --api-key=$HEROKU_STAGING_API_KEY
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```
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To use different provider take a look at long list of [Supported Providers](https://github.com/travis-ci/dpl#supported-providers).
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### Using Dpl with Docker
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## Using Dpl with Docker
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When you use GitLab Runner you most likely configured it to use your server's shell commands.
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This means that all commands are run in context of local user (ie. gitlab_runner or gitlab_ci_multi_runner).
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It also means that most probably in your Docker container you don't have the Ruby runtime installed.
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You will have to install it:
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```
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```yaml
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staging:
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type: deploy
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stage: deploy
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script:
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- apt-get update -yq
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- apt-get install -y ruby-dev
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- gem install dpl
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- master
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```
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The first line `apt-get update -yq` updates the list of available packages, where second `apt-get install -y ruby-dev` install `Ruby` runtime on system.
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The first line `apt-get update -yq` updates the list of available packages,
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where second `apt-get install -y ruby-dev` installs the Ruby runtime on system.
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The above example is valid for all Debian-compatible systems.
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### Usage in staging and production
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It's pretty common in developer workflow to have staging (development) and production environment.
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If we consider above example: we would like to deploy `master` branch to `staging` and `all tags` to `production` environment.
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## Usage in staging and production
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It's pretty common in the development workflow to have staging (development) and
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production environments
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Let's consider the following example: we would like to deploy the `master`
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branch to `staging` and all tags to the `production` environment.
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The final `.gitlab-ci.yml` for that setup would look like this:
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```
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```yaml
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staging:
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type: deploy
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stage: deploy
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script:
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- gem install dpl
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- dpl --provider=heroku --app=my-app-staging --api-key=$HEROKU_STAGING_API_KEY
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only:
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- master
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production:
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type: deploy
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stage: deploy
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script:
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- gem install dpl
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- dpl --provider=heroku --app=my-app-production --api-key=$HEROKU_PRODUCTION_API_KEY
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only:
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```
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We created two deploy jobs that are executed on different events:
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1. `staging` is executed for all commits that were pushed to `master` branch,
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2. `production` is executed for all pushed tags.
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We also use two secure variables:
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1. `HEROKU_STAGING_API_KEY` - Heroku API key used to deploy staging app,
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2. `HEROKU_PRODUCTION_API_KEY` - Heroku API key used to deploy production app.
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### Storing API keys
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In GitLab CI 7.12 a new feature was introduced: Secure Variables.
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Secure Variables can added by going to `Project > Variables > Add Variable`.
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**This feature requires `gitlab-runner` with version equal or greater than 0.4.0.**
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The variables that are defined in the project settings are sent along with the build script to the runner.
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The secure variables are stored out of the repository. Never store secrets in your projects' .gitlab-ci.yml.
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It is also important that secret's value is hidden in the job log.
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## Storing API keys
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Secure Variables can added by going to your project's
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**Settings ➔ CI/CD Pipelines ➔ Secret variables**. The variables that are defined
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in the project settings are sent along with the build script to the Runner.
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The secure variables are stored out of the repository. Never store secrets in
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your project's `.gitlab-ci.yml`. It is also important that the secret's value
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is hidden in the job log.
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You access added variable by prefixing it's name with `$` (on non-Windows runners)
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or `%` (for Windows Batch runners):
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You access added variable by prefixing it's name with `$` (on non-Windows runners) or `%` (for Windows Batch runners):
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1. `$SECRET_VARIABLE` - use it for non-Windows runners
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2. `%SECRET_VARIABLE%` - use it for Windows Batch runners
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Read more about the [CI variables](../../variables/README.md).
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