Commit 02793e19 authored by Evan Read's avatar Evan Read

Merge branch 'selhorn-releases-redo' into 'master'

Docs: Redo of Releases page

Closes #220842

See merge request gitlab-org/gitlab!34967
parents 365f6237 d2924c1c
......@@ -2,7 +2,7 @@
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/29382) in GitLab 13.0.
You can use the Freeze Periods API to manipulate GitLab's [Freeze Period](../user/project/releases/index.md#set-a-deploy-freeze) entries.
You can use the Freeze Periods API to manipulate GitLab's [Freeze Period](../user/project/releases/index.md#prevent-unintentional-releases-by-setting-a-deploy-freeze) entries.
## Permissions and security
......
......@@ -7,7 +7,7 @@ that help maintain deployment security and stability.
You can:
- [Restrict write-access to a critical environment](#restrict-write-access-to-a-critical-environment)
- [Restrict deployments for a particular period](#restrict-deployments-for-a-particular-period)
- [Prevent deployments during deploy freeze windows](#prevent-deployments-during-deploy-freeze-windows)
If you are using a continuous deployment workflow and want to ensure that concurrent deployments to the same environment do not happen, you should enable the following options:
......@@ -77,10 +77,10 @@ The improved pipeline flow **after** enabling Skip outdated deployment jobs:
1. The `deploy` job in Pipeline-B finishes first, and deploys the newer code.
1. The `deploy` job in Pipeline-A is automatically cancelled, so that it doesn't overwrite the deployment from the newer pipeline.
## Restrict deployments for a particular period
## Prevent deployments during deploy freeze windows
If you want to prevent deployments for a particular period, for example during a planned
vacation period when most employees are out, you can set up a [Deploy Freeze](../../user/project/releases/index.md#set-a-deploy-freeze).
vacation period when most employees are out, you can set up a [Deploy Freeze](../../user/project/releases/index.md#prevent-unintentional-releases-by-setting-a-deploy-freeze).
During a deploy freeze period, no deployment can be executed. This is helpful to
ensure that deployments do not happen unexpectedly.
......
......@@ -431,7 +431,7 @@ in GitLab that helps maintain deployment security and stability.
- [Restrict write-access to a critical environment](deployment_safety.md#restrict-write-access-to-a-critical-environment)
- [Limit the job-concurrency for deployment jobs](deployment_safety.md#ensure-only-one-deployment-job-runs-at-a-time)
- [Skip outdated deployment jobs](deployment_safety.md#skip-outdated-deployment-jobs)
- [Restrict deployments for a particular period](deployment_safety.md#restrict-deployments-for-a-particular-period)
- [Prevent deployments during deploy freeze windows](deployment_safety.md#prevent-deployments-during-deploy-freeze-windows)
### Complete example
......
......@@ -29,7 +29,7 @@ Similarly, milestones can be used as releases. To do so:
1. Set the milestone title to the version of your release, such as `Version 9.4`.
1. Add an issue to your release by associating the desired milestone from the issue's right-hand sidebar.
Additionally, you can integrate milestones with GitLab's [Releases feature](../releases/index.md#releases-associated-with-milestones).
Additionally, you can integrate milestones with GitLab's [Releases feature](../releases/index.md#associate-milestones-with-a-release).
## Project milestones and group milestones
......
......@@ -9,261 +9,302 @@ info: To determine the technical writer assigned to the Stage/Group associated w
> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/41766) in GitLab 11.7.
It is typical to create a [Git tag](../../../university/training/topics/tags.md) at
the moment of release to introduce a checkpoint in your source code
history, but in most cases your users will need compiled objects or other
assets output by your CI system to use them, not just the raw source
code.
GitLab's **Releases** are a way to track deliverables in your project. Consider them
a snapshot in time of the source, build output, artifacts, and other metadata
To introduce a checkpoint in your source code history, you can assign a
[Git tag](https://git-scm.com/book/en/v2/Git-Basics-Tagging) at the moment of release.
However, in most cases, your users need more than just the raw source code.
They need compiled objects or other assets output by your CI/CD system.
A GitLab *Release* is a snapshot of the source, build output, artifacts, and other metadata
associated with a released version of your code.
## Getting started with Releases
You can create a GitLab release on any branch. When you create a release:
Start by giving a [description](#release-description) to the Release and
including its [assets](#release-assets), as follows.
- GitLab automatically archives source code and associates it with the release.
- GitLab automatically creates a JSON file that lists everything in the release,
so you can compare and audit releases. This file is called [release evidence](#release-evidence).
- You can add release notes and a message for the tag associated with the release.
## Release versioning
After you create a release, you can [associate milestones with it](#associate-milestones-with-a-release),
and attach [release assets](#release-assets), like runbooks or packages.
Release versions are manually assigned by the user in the Release title. GitLab uses [Semantic Versioning](https://semver.org/) for our releases, and we recommend you do too. Use `(Major).(Minor).(Patch)`, as detailed in the [GitLab Policy for Versioning](../../../policy/maintenance.md#versioning).
## View releases
For example, for GitLab version `10.5.7`:
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/36667) in GitLab 12.8.
- `10` represents the major version. The major release was `10.0.0`, but often referred to as `10.0`.
- `5` represents the minor version. The minor release was `10.5.0`, but often referred to as `10.5`.
- `7` represents the patch number.
To view a list of releases:
Any part of the version number can be multiple digits, for example, `13.10.11`.
- Go to **Project overview > Releases**, or
- On the project's overview page, if at least one release exists, click the number of releases.
![Number of Releases](img/releases_count_v13_2.png "Incremental counter of Releases")
- On public projects, this number is visible to all users.
- On private projects, this number is visible to users with Reporter
[permissions](../../permissions.md#project-members-permissions) or higher.
### Release description
## Create a release
Every Release has a description. You can add any text you like, but we recommend
including a changelog to describe the content of your release. This will allow
your users to quickly scan the differences between each one you publish.
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/32812) in GitLab 12.9. Releases can be created directly in the GitLab UI.
NOTE: **Note:**
[Git's tagging messages](https://git-scm.com/book/en/v2/Git-Basics-Tagging) and
Release descriptions are unrelated. Description supports [Markdown](../../markdown.md).
Only users with Developer permissions or higher can create releases.
Read more about [Release permissions](../../../user/permissions.md#project-members-permissions).
### Release assets
You can create a release in the user interface, or by using the
[Releases API](../../../api/releases/index.md#create-a-release).
We recommend using the API to add release notes as one of the last steps in your CI/CD release pipeline.
You can currently add the following types of assets to each Release:
To create a new release through the GitLab UI:
- [Source code](#source-code): state of the repository at the time of the Release
- [Links](#links): to content such as built binaries or documentation
1. Navigate to **Project overview > Releases** and click the **New release** button.
1. In the [**Tag name**](#tag-name) box, enter a name.
1. In the **Create from** list, select the branch or enter a tag or commit SHA.
1. In the **Message** box, enter a message associated with the tag.
1. Optionally, in the [**Release notes**](#release-notes-description)
field, enter the release's description. You can use Markdown and drag and drop files to this field.
- If you leave this field empty, only a tag will be created.
- If you populate it, both a tag and a release will be created.
1. Click **Create tag**.
GitLab will support more asset types in the future, including objects such
as pre-built packages, compliance/security evidence, or container images.
If you created a release, you can view it at **Project overview > Releases**.
If you created a tag, you can view it at **Repository > Tags**.
#### Source code
You can now edit the release to [add milestones](#associate-milestones-with-a-release)
and [release assets](#release-assets).
GitLab automatically generate `zip`, `tar.gz`, `tar.bz2` and `tar`
archived source code from the given Git tag. These are read-only assets.
### Schedule a future release
#### Links
> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/38105) in GitLab 12.1.
A link is any URL which can point to whatever you like; documentation, built
binaries, or other related materials. These can be both internal or external
links from your GitLab instance.
You can create a release ahead of time by using the [Releases API](../../../api/releases/index.md#upcoming-releases).
When you set a future `released_at` date, an **Upcoming Release** badge is displayed next to the
release tag. When the `released_at` date and time has passed, the badge is automatically removed.
The four types of links are "Runbook," "Package," "Image," and "Other."
![An upcoming release](img/upcoming_release_v12_7.png)
#### Permanent links to Release assets
## Edit a release
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/27300) in GitLab 12.9.
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/26016) in GitLab 12.6. Asset link editing was [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/9427) in GitLab 12.10.
The assets associated with a Release are accessible through a permanent URL.
GitLab will always redirect this URL to the actual asset
location, so even if the assets move to a different location, you can continue
to use the same URL. This is defined during [link creation](../../../api/releases/links.md#create-a-link) or [updating](../../../api/releases/links.md#update-a-link).
NOTE: **Note:**
Only users with Developer permissions or higher can edit releases.
Read more about [Release permissions](../../../user/permissions.md#project-members-permissions).
Each asset has a name, a URL of the *actual* asset location, and optionally, a
`filepath` parameter, which, if you specify it, will create a URL pointing
to the asset for the Release. The format of the URL is:
To edit the details of a release:
```html
https://host/namespace/project/releases/:release/downloads/:filepath
```
1. Navigate to **Project overview > Releases**.
1. In the top-right corner of the release you want to modify, click **Edit this release** (the pencil icon).
1. On the **Edit Release** page, change the release's details.
1. Click **Save changes**.
If you have an asset for the `v11.9.0-rc2` release in the `gitlab-org`
namespace and `gitlab-runner` project on `gitlab.com`, for example:
You can edit the release title, notes, associated milestones, and asset links.
To change other release information, such as the tag or release date, use the
[Releases API](../../../api/releases/index.md#update-a-release).
```json
{
"name": "linux amd64",
"filepath": "/binaries/gitlab-runner-linux-amd64",
"url": "https://gitlab-runner-downloads.s3.amazonaws.com/v11.9.0-rc2/binaries/gitlab-runner-linux-amd64"
}
```
## Add release notes to Git tags
This asset has a direct link of:
If you have an existing Git tag, you can add release notes to it.
```html
https://gitlab.com/gitlab-org/gitlab-runner/releases/v11.9.0-rc2/downloads/binaries/gitlab-runner-linux-amd64
```
You can do this in the user interface, or by using the [Releases API](../../../api/releases/index.md).
We recommend using the API to add release notes as one of the last steps in your CI/CD release pipeline.
The physical location of the asset can change at any time and the direct link will remain unchanged.
In the interface, to add release notes to a new Git tag:
1. Navigate to your project's **Repository > Tags**.
1. Click **New tag**.
1. In the **Release notes** field, enter the release's description.
You can use Markdown and drag and drop files to this field.
1. Click **Create tag**.
In the interface, to add release notes to an existing Git tag:
1. Navigate to your project's **Repository > Tags**.
1. Click **Edit release notes** (the pencil icon).
1. In the **Release notes** field, enter the release's description.
You can use Markdown in this field, and drag and drop files to it.
1. Click **Save changes**.
### Releases associated with milestones
## Associate milestones with a release
> - [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/29020) in GitLab 12.5.
> - [Updated](https://gitlab.com/gitlab-org/gitlab/-/issues/39467) to edit milestones in the UI in GitLab 13.0.
Releases can optionally be associated with one or more
[project milestones](../milestones/index.md#project-milestones-and-group-milestones)
by including a `milestones` array in your requests to the
[Releases API](../../../api/releases/index.md#create-a-release) or by using the dropdown in the [Edit Release](#editing-a-release) page.
You can associate a release with one or more [project milestones](../milestones/index.md#project-milestones-and-group-milestones).
![Release edit page with milestones dropdown expanded](img/release_milestone_dropdown_v13_0.png)
You can do this in the user interface, or by including a `milestones` array in your request to
the [Releases API](../../../api/releases/index.md#create-a-release).
Releases display this association with the **Milestone** indicator in the top
section of the Release block on the **Project overview > Releases** page, along
with some statistics about the issues in the milestone(s).
In the user interface, to associate milestones to a release:
1. Navigate to **Project overview > Releases**.
1. In the top-right corner of the release you want to modify, click **Edit this release** (the pencil icon).
1. From the **Milestones** list, select each milestone you want to associate. You can select multiple milestones.
1. Click **Save changes**.
On the **Project overview > Releases** page, the **Milestone** is listed in the top
section, along with statistics about the issues in the milestones.
![A Release with one associated milestone](img/release_with_milestone_v12_9.png)
Below is an example of milestones with no Releases, one Release, and two
Releases, respectively.
Releases are also visible on the **Issues > Milestones** page, and when you click a milestone
on this page.
Here is an example of milestones with no releases, one release, and two releases, respectively.
![Milestones with and without Release associations](img/milestone_list_with_releases_v12_5.png)
This relationship is also visible in the **Releases** section of the sidebar
when viewing a specific milestone. Below is an example of a milestone
associated with a large number of Releases.
## Get notified when a release is created
![Milestone with lots of associated Releases](img/milestone_with_releases_v12_5.png)
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/26001) in GitLab 12.4.
## Releases list
You can be notified by email when a new release is created for your project.
Navigate to **Project > Releases** in order to see the list of releases for a given
project.
To subscribe to notifications for releases:
![Releases list](img/releases_v12_9.png)
1. Navigate to **Project overview**.
1. Click **Notification setting** (the bell icon).
1. In the list, click **Custom**.
1. Select the **New release** check box.
1. Close the dialog box to save.
### Number of Releases
## Prevent unintentional releases by setting a deploy freeze
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/36667) in GitLab 12.8.
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/29382) in GitLab 13.0.
The incremental number of Releases is displayed on the project's details page. When clicked,
it takes you to the list of Releases.
Prevent unintended production releases during a period of time you specify by
setting a [*deploy freeze* period](../../../ci/environments/deployment_safety.md).
Deploy freezes help reduce uncertainty and risk when automating deployments.
![Number of Releases](img/releases_count_v12_8.png "Incremental counter of Releases")
Use the [Freeze Periods API](../../../api/freeze_periods.md) to set a `freeze_start` and a `freeze_end`, which
are defined as [crontab](https://crontab.guru/) entries.
For private projects, the number of Releases is displayed to users with Reporter
[permissions](../../permissions.md#project-members-permissions) or higher. For public projects,
it is displayed to every user regardless of their permission level.
If the job that's executing is within a freeze period, GitLab CI/CD creates an environment
variable named `$CI_DEPLOY_FREEZE`.
### Upcoming Releases
To prevent the deployment job from executing, create a `rules` entry in your
`gitlab-ci.yaml`, for example:
> [Introduced](https://gitlab.com/gitlab-org/gitlab-foss/-/issues/38105) in GitLab 12.1.
```yaml
deploy_to_production:
stage: deploy
script: deploy_to_prod.sh
rules:
- if: $CI_DEPLOY_FREEZE == null
```
A Release may be created ahead of time by specifying a future `released_at` date. Until
the `released_at` date and time is reached, an **Upcoming Release** badge will appear next to the
Release tag. Once the `released_at` date and time has passed, the badge is automatically removed.
If a project contains multiple freeze periods, all periods apply. If they overlap, the freeze covers the
complete overlapping period.
![An upcoming release](img/upcoming_release_v12_7.png)
For more information, see [Deployment safety](../../../ci/environments/deployment_safety.md).
## Creating a Release
## Release fields
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/32812) in GitLab 12.9, Releases can be created directly through the GitLab Releases UI.
The following fields are available when you create or edit a release.
NOTE: **Note:**
Only users with Developer permissions or higher can create Releases.
Read more about [Release permissions](../../../user/permissions.md#project-members-permissions).
### Tag name
To create a new Release through the GitLab UI:
The release tag name should include the release version. GitLab uses [Semantic Versioning](https://semver.org/)
for our releases, and we recommend you do too. Use `(Major).(Minor).(Patch)`, as detailed in the
[GitLab Policy for Versioning](../../../policy/maintenance.md#versioning).
1. Navigate to **Project overview > Releases** and click the **New release** button.
1. On the **New Tag** page, fill out the tag details.
1. Optionally, in the **Release notes** field, enter the Release's description.
If you leave this field empty, only a tag will be created.
If you populate it, both a tag and a Release will be created.
1. Click **Create tag**.
For example, for GitLab version `10.5.7`:
If you created a release, you can view it at **Project overview > Releases**.
- `10` represents the major version. The major release was `10.0.0`, but often referred to as `10.0`.
- `5` represents the minor version. The minor release was `10.5.0`, but often referred to as `10.5`.
- `7` represents the patch number.
You can also create a Release using the [Releases API](../../../api/releases/index.md#create-a-release):
we recommend doing this as one of the last steps in your CI/CD release pipeline.
Any part of the version number can be multiple digits, for example, `13.10.11`.
## Editing a release
### Release notes description
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/26016) in GitLab 12.6. Asset link editing was [introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/9427) in GitLab 12.10.
Every release has a description. You can add any text you like, but we recommend
including a changelog to describe the content of your release. This helps users
quickly scan the differences between each release you publish.
To edit the details of a release, navigate to **Project overview > Releases** and click
the edit button (pencil icon) in the top-right corner of the release you want to modify.
NOTE: **Note:**
[Git's tagging messages](https://git-scm.com/book/en/v2/Git-Basics-Tagging) and
Release note descriptions are unrelated. Description supports [Markdown](../../markdown.md).
![A release with an edit button](img/release_edit_button_v12_6.png)
### Release assets
This will bring you to the **Edit Release** page, from which you can
change some of the release's details.
You can currently add the following types of assets to each release:
![Edit release page](img/edit_release_page_v13_0.png)
- [Source code](#source-code)
- [Links](#links)
Currently, it is only possible to edit the release title, notes, associated milestones, and asset
links. To change other release information, such as its tag, or release date, use the [Releases
API](../../../api/releases/index.md#update-a-release). Editing this information
through the **Edit Release** page is planned for a future version of GitLab.
GitLab will support more asset types in the future, including objects such
as pre-built packages, compliance/security evidence, or container images.
## Notification for Releases
#### Permanent links to release assets
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/26001) in GitLab 12.4.
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/27300) in GitLab 12.9.
You can be notified by email when a new Release is created for your project.
The assets associated with a release are accessible through a permanent URL.
GitLab will always redirect this URL to the actual asset
location, so even if the assets move to a different location, you can continue
to use the same URL. This is defined during [link creation](../../../api/releases/links.md#create-a-link) or [updating](../../../api/releases/links.md#update-a-link).
To subscribe to Release notifications:
Each asset has a name, a URL of the *actual* asset location, and optionally, a
`filepath` parameter, which, if you specify it, will create a URL pointing
to the asset for the Release. The format of the URL is:
1. Navigate to your **Project**'s landing page.
1. Click the bell icon (**Notification setting**).
1. Select **Custom** from the dropdown menu.
![Custom notification - Dropdown menu](img/custom_notifications_dropdown_v12_5.png)
1. Select **New release**.
![Custom notification - New release](img/custom_notifications_new_release_v12_5.png)
```plaintext
https://host/namespace/project/releases/:release/downloads/:filepath
```
## Add release notes to Git tags
If you have an asset for the `v11.9.0-rc2` release in the `gitlab-org`
namespace and `gitlab-runner` project on `gitlab.com`, for example:
You can add release notes to any Git tag using the notes feature. Release notes
behave like any other Markdown form in GitLab so you can write text and
drag and drop files to it. Release notes are stored in GitLab's database.
```json
{
"name": "linux amd64",
"filepath": "/binaries/gitlab-runner-linux-amd64",
"url": "https://gitlab-runner-downloads.s3.amazonaws.com/v11.9.0-rc2/binaries/gitlab-runner-linux-amd64"
}
```
There are several ways to add release notes:
This asset has a direct link of:
- In the interface, when you create a new Git tag.
- In the interface, by adding a release note to an existing Git tag.
- Using the [Releases API](../../../api/releases/index.md): (we recommend doing this as one of the last
steps in your CI/CD release pipeline).
```plaintext
https://gitlab.com/gitlab-org/gitlab-runner/releases/v11.9.0-rc2/downloads/binaries/gitlab-runner-linux-amd64
```
To create a new tag, navigate to your project's **Repository > Tags** and
click **New tag**. From there, you can fill the form with all the information
about the release:
The physical location of the asset can change at any time and the direct link will remain unchanged.
![new_tag](img/new_tag_12_5.png "Creation of a new tag.")
### Source code
GitLab automatically generates `zip`, `tar.gz`, `tar.bz2` and `tar`
archived source code from the given Git tag. These are read-only assets.
You can also edit an existing tag to add release notes:
### Links
![tags](img/tags_12_5.png "Addition of note to an existing tag")
A link is any URL which can point to whatever you like: documentation, built
binaries, or other related materials. These can be both internal or external
links from your GitLab instance.
The four types of links are "Runbook," "Package," "Image," and "Other."
## Release Evidence
## Release evidence
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/26019) in GitLab 12.6.
Each time a release is created, GitLab takes a snapshot of data that's related to it.
This data is called Release Evidence. It includes linked milestones and issues, and
it is taken at moment the release is created. It provides a chain of custody and can
facilitate processes like external audits, for example.
This data is saved in a JSON file and called *release evidence*. It includes linked milestones
and issues and can facilitate internal processes like external audits.
To access the release evidence, on the Releases page, click the link to the JSON file that's listed
under the **Evidence collection** heading.
You can also [use the API](../../../api/releases/index.md#collect-release-evidence-premium-only) to
generate Release Evidence for an existing release. Because of this, [each release](#releases-list)
can have multiple Release Evidence snapshots. You can view the Release Evidence and
its details on the Release page.
generate release evidence for an existing release. Because of this, each release
can have multiple release evidence snapshots. You can view the release evidence and
its details on the Releases page.
NOTE: **Note:**
When the issue tracker is disabled, release evidence [cannot be downloaded](https://gitlab.com/gitlab-org/gitlab/-/issues/208397).
Release Evidence is stored as a JSON object, so you can compare evidence by using
commonly-available tools.
Here is an example of a Release Evidence object:
Here is an example of a release evidence object:
```json
{
......@@ -323,28 +364,13 @@ Here is an example of a Release Evidence object:
}
```
### Diabling Release Evidence display **(CORE ONLY)**
This feature comes with the `:release_evidence_collection` feature flag
enabled by default in GitLab self-managed instances. To turn it off,
ask a GitLab administrator with Rails console access to run the following
command:
```ruby
Feature.disable(:release_evidence_collection)
```
NOTE: **Note:**
Please note that Release Evidence's data is collected regardless of this
feature flag, which only enables or disables the display of the data on the
Releases page.
### Collect release evidence **(PREMIUM ONLY)**
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/199065) in [GitLab Premium](https://about.gitlab.com/pricing/) 12.10.
Evidence collection can be initiated by using an [API call](../../../api/releases/index.md#collect-release-evidence-premium-only) at any time. Evidence snapshots are visible on
the Release page, along with the timestamp the Evidence was collected.
When a release is created, release evidence is automatically collected. To initiate evidence collection any other time, use an [API call](../../../api/releases/index.md#collect-release-evidence-premium-only). You can collect release evidence multiple times for one release.
Evidence collection snapshots are visible on the Releases page, along with the timestamp the evidence was collected.
### Include report artifacts as release evidence **(ULTIMATE ONLY)**
......@@ -381,63 +407,43 @@ If you [schedule release evidence collection](#schedule-release-evidence-collect
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/23697) in GitLab 12.8.
When the `released_at` date and time is not provided, the date and time of Release
creation is used. The Evidence collection background job is immediately executed.
In the API:
- If you specify a future `released_at` date, the release becomes an **Upcoming Release**
and the evidence is collected on the date of the release. You cannot collect
release evidence before then.
- If you use a past `released_at` date, no evidence is collected.
- If you do not specify a `released_at` date, release evidence is collected on the
date the release is created.
If a future `released_at` is specified, the Release becomes an **Upcoming Release**. In this
case, the Evidence is scheduled to be collected at the `released_at` date and time, via a
background job.
### Disable release evidence display **(CORE ONLY)**
If a past `released_at` is used, no Evidence is collected for the Release.
The `:release_evidence_collection` feature flag is enabled by default in GitLab
self-managed instances. To turn it off, ask a GitLab administrator with Rails console
access to run the following command:
```ruby
Feature.disable(:release_evidence_collection)
```
NOTE: **Note:**
Release evidence is collected regardless of this feature flag,
which only enables or disables the display of the data on the
Releases page.
## GitLab Releaser
> [Introduced](https://gitlab.com/gitlab-org/gitlab-releaser/-/merge_requests/6) in GitLab 12.10.
GitLab Releaser is a CLI tool for managing GitLab Releases from the command line or from
GitLab CI/CD's configuration file, `.gitlab-ci.yml`.
GitLab's CI/CD configuration file, `.gitlab-ci.yml`.
With it, you can create, update, modify, and delete Releases right through the
With it, you can create, update, modify, and delete releases right through the
terminal.
Read the [GitLab Releaser documentation](https://gitlab.com/gitlab-org/gitlab-releaser/-/tree/master/docs/index.md)
for details.
## Set a deploy freeze
> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/merge_requests/29382) in GitLab 13.0.
With a deploy freeze, you can prevent an unintended production release during a
period of time you specify, whether a company event or public holiday. You can
now rely on the enforcement of policies that are typically outside the scope of
GitLab to reduce uncertainty and risk when automating deployments.
Deploy freeze periods are set at the Project level, and may be created and
managed using the [Freeze Periods API](../../../api/freeze_periods.md).
Each Freeze Period has a `freeze_start` and a `freeze_end`, which are defined
as [crontab](https://crontab.guru/) entries. If a project contains multiple
freeze periods, all will apply, and should they overlap, the freeze covers the
complete overlapped period.
During pipeline processing, GitLab CI creates an environment variable named
`$CI_DEPLOY_FREEZE` if the currently executing job is within a
Freeze Period.
To take advantage of this variable, create a `rules` entry in your
`gitlab-ci.yaml` to prevent the deployment job from executing.
For example:
```yaml
deploy_to_production:
stage: deploy
script: deploy_to_prod.sh
rules:
- if: $CI_DEPLOY_FREEZE == null
```
For more information, see [Deployment safety](../../../ci/environments/deployment_safety.md).
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