debian-mirror-gitlab/doc/ci/environments.md

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# Introduction to environments and deployments
>**Note:**
Introduced in GitLab 8.9.
## Environments
Environments are places where code gets deployed, such as staging or production.
CI/CD [Pipelines] usually have one or more [jobs] that deploy to an environment.
Defining environments in a project's `.gitlab-ci.yml` lets developers track
[deployments] to these environments.
## Deployments
Deployments are created when [jobs] deploy versions of code to [environments].
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### Checkout deployments locally
Since 8.13, a reference in the git repository is saved for each deployment. So
knowing what the state is of your current environments is only a `git fetch`
away.
In your git config, append the `[remote "<your-remote>"]` block with an extra
fetch line:
```
fetch = +refs/environments/*:refs/remotes/origin/environments/*
```
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## Defining environments
You can create and delete environments manually in the web interface, but we
recommend that you define your environments in `.gitlab-ci.yml` first, which
will automatically create environments for you after the first deploy.
The `environment` is just a hint for GitLab that this job actually deploys to
this environment. Each time the job succeeds, a deployment is recorded,
remembering the git SHA and environment.
Add something like this to your `.gitlab-ci.yml`:
```
production:
stage: deploy
script: dpl...
environment: production
```
See full [documentation](yaml/README.md#environment).
## Seeing environment status
You can find the environment list under **Pipelines > Environments** for your
project. You'll see the git SHA and date of the last deployment to each
environment defined.
>**Note:**
Only deploys that happen after your `.gitlab-ci.yml` is properly configured will
show up in the environments and deployments lists.
## Seeing deployment history
Clicking on an environment will show the history of deployments.
>**Note:**
Only deploys that happen after your `.gitlab-ci.yml` is properly configured will
show up in the environments and deployments lists.
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[Pipelines]: pipelines.md
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[jobs]: yaml/README.md#jobs
[environments]: #environments
[deployments]: #deployments