Jobs artifacts administration

Introduced in GitLab 8.2 and GitLab Runner 0.7.0.

Starting with GitLab 8.4 and GitLab Runner 1.0, the artifacts archive format changed to ZIP.

Starting with GitLab 8.17, builds are renamed to jobs.

This is the administration documentation. For the user guide see pipelines/job_artifacts.

Artifacts is a list of files and directories which are attached to a job after it finishes. This feature is enabled by default in all GitLab installations. Keep reading if you want to know how to disable it.

Disabling job artifacts

To disable artifacts site-wide, follow the steps below.

In Omnibus installations:

Edit /etc/gitlab/gitlab.rb and add the following line:
```
gitlab_rails['artifacts_enabled'] = false
```
Save the file and reconfigure GitLab for the changes to take effect.

In installations from source:

Edit /home/git/gitlab/config/gitlab.yml and add or amend the following lines:
```
artifacts:
  enabled: false
```
Save the file and restart GitLab for the changes to take effect.

Storing job artifacts

GitLab Runner can upload an archive containing the job artifacts to GitLab. By default, this is done when the job succeeds, but can also be done on failure, or always, via the artifacts:when parameter.

Most artifacts are compressed by GitLab Runner before being sent to the coordinator. The exception to this is reports artifacts, which are compressed after uploading.

Using local storage

To change the location where the artifacts are stored locally, follow the steps below.

In Omnibus installations:

The artifacts are stored by default in /var/opt/gitlab/gitlab-rails/shared/artifacts.

To change the storage path for example to /mnt/storage/artifacts, edit /etc/gitlab/gitlab.rb and add the following line:
```
gitlab_rails['artifacts_path'] = "/mnt/storage/artifacts"
```
Save the file and reconfigure GitLab for the changes to take effect.

In installations from source:

The artifacts are stored by default in /home/git/gitlab/shared/artifacts.

To change the storage path for example to /mnt/storage/artifacts, edit /home/git/gitlab/config/gitlab.yml and add or amend the following lines:
```
artifacts:
  enabled: true
  path: /mnt/storage/artifacts
```
Save the file and restart GitLab for the changes to take effect.

Using object storage

Introduced in GitLab Premium 9.4.

Since version 9.5, artifacts are browsable, when object storage is enabled. 9.4 lacks this feature.

Since version 10.6, available in GitLab Core

Since version 11.0, we support direct_upload to S3.

If you don't want to use the local disk where GitLab is installed to store the artifacts, you can use an object storage like AWS S3 instead. This configuration relies on valid AWS credentials to be configured already. Use an object storage option like AWS S3 to store job artifacts.

If you configure GitLab to store artifacts on object storage, you may also want to eliminate local disk usage for job logs. In both cases, job logs are archived and moved to object storage when the job completes.

WARNING: In a multi-server setup you must use one of the options to eliminate local disk usage for job logs, or job logs could be lost.

Object Storage Settings

NOTE: In GitLab 13.2 and later, we recommend using the consolidated object storage settings. This section describes the earlier configuration format.

For source installations the following settings are nested under artifacts: and then object_store:. On Omnibus GitLab installs they are prefixed by artifacts_object_store_.

Setting	Default	Description
`enabled`	`false`	Enable/disable object storage
`remote_directory`		The bucket name where Artifacts are stored
`direct_upload`	`false`	Set to `true` to enable direct upload of Artifacts without the need of local shared storage. Option may be removed once we decide to support only single storage for all files.
`background_upload`	`true`	Set to `false` to disable automatic upload. Option may be removed once upload is direct to S3
`proxy_download`	`false`	Set to `true` to enable proxying all files served. Option allows to reduce egress traffic as this allows clients to download directly from remote storage instead of proxying all data.
`connection`		Various connection options described below

Connection settings

See the available connection settings for different providers.

In Omnibus installations:

The artifacts are stored by default in /var/opt/gitlab/gitlab-rails/shared/artifacts.

Edit /etc/gitlab/gitlab.rb and add the following lines, substituting the values you want:

gitlab_rails['artifacts_enabled'] = true
gitlab_rails['artifacts_object_store_enabled'] = true
gitlab_rails['artifacts_object_store_remote_directory'] = "artifacts"
gitlab_rails['artifacts_object_store_connection'] = {
  'provider' => 'AWS',
  'region' => 'eu-central-1',
  'aws_access_key_id' => 'AWS_ACCESS_KEY_ID',
  'aws_secret_access_key' => 'AWS_SECRET_ACCESS_KEY'
}

NOTE: For GitLab 9.4+, if you're using AWS IAM profiles, be sure to omit the AWS access key and secret access key/value pairs. For example:

gitlab_rails['artifacts_object_store_connection'] = {
  'provider' => 'AWS',
  'region' => 'eu-central-1',
  'use_iam_profile' => true
}

Save the file and reconfigure GitLab for the changes to take effect.
Migrate any existing local artifacts to the object storage:
```
gitlab-rake gitlab:artifacts:migrate
```

Optional: Verify all files migrated properly. From PostgreSQL console (sudo gitlab-psql -d gitlabhq_production) verify objectstg below (where file_store=2) has count of all artifacts:

gitlabhq_production=# SELECT count(*) AS total, sum(case when file_store = '1' then 1 else 0 end) AS filesystem, sum(case when file_store = '2' then 1 else 0 end) AS objectstg FROM ci_job_artifacts;

total | filesystem | objectstg
------+------------+-----------
 2409 |          0 |      2409

Verify no files on disk in artifacts folder:

sudo find /var/opt/gitlab/gitlab-rails/shared/artifacts -type f | grep -v tmp/cache | wc -l

In some cases, you may need to run the orphan artifact file cleanup Rake task to clean up orphaned artifacts.

WARNING: JUnit test report artifact (junit.xml.gz) migration was not supported until GitLab 12.8 by the gitlab:artifacts:migrate script.

In installations from source:

The artifacts are stored by default in /home/git/gitlab/shared/artifacts.

Edit /home/git/gitlab/config/gitlab.yml and add or amend the following lines:

artifacts:
  enabled: true
  object_store:
    enabled: true
    remote_directory: "artifacts"  # The bucket name
    connection:
      provider: AWS  # Only AWS supported at the moment
      aws_access_key_id: AWS_ACCESS_KEY_ID
      aws_secret_access_key: AWS_SECRET_ACCESS_KEY
      region: eu-central-1

Save the file and restart GitLab for the changes to take effect.

Migrate any existing local artifacts to the object storage:

sudo -u git -H bundle exec rake gitlab:artifacts:migrate RAILS_ENV=production

Optional: Verify all files migrated properly. From PostgreSQL console (sudo -u git -H psql -d gitlabhq_production) verify objectstg below (where file_store=2) has count of all artifacts:

gitlabhq_production=# SELECT count(*) AS total, sum(case when file_store = '1' then 1 else 0 end) AS filesystem, sum(case when file_store = '2' then 1 else 0 end) AS objectstg FROM ci_job_artifacts;

total | filesystem | objectstg
------+------------+-----------
 2409 |          0 |      2409

Verify no files on disk in artifacts folder:

sudo find /var/opt/gitlab/gitlab-rails/shared/artifacts -type f | grep -v tmp/cache | wc -l

In some cases, you may need to run the orphan artifact file cleanup Rake task to clean up orphaned artifacts.

WARNING: JUnit test report artifact (junit.xml.gz) migration was not supported until GitLab 12.8 by the gitlab:artifacts:migrate script.

OpenStack example

See the available connection settings for OpenStack.

In Omnibus installations:

The uploads are stored by default in /var/opt/gitlab/gitlab-rails/shared/artifacts.

Edit /etc/gitlab/gitlab.rb and add the following lines, substituting the values you want:

gitlab_rails['artifacts_enabled'] = true
gitlab_rails['artifacts_object_store_enabled'] = true
gitlab_rails['artifacts_object_store_remote_directory'] = "artifacts"
gitlab_rails['artifacts_object_store_connection'] = {
 'provider' => 'OpenStack',
 'openstack_username' => 'OS_USERNAME',
 'openstack_api_key' => 'OS_PASSWORD',
 'openstack_temp_url_key' => 'OS_TEMP_URL_KEY',
 'openstack_auth_url' => 'https://auth.cloud.ovh.net',
 'openstack_region' => 'GRA',
 'openstack_tenant_id' => 'OS_TENANT_ID',
}

Save the file and reconfigure GitLab for the changes to take effect.
Migrate any existing local artifacts to the object storage:
```
gitlab-rake gitlab:artifacts:migrate
```

In installations from source:

The uploads are stored by default in /home/git/gitlab/shared/artifacts.

Edit /home/git/gitlab/config/gitlab.yml and add or amend the following lines:

uploads:
  object_store:
    enabled: true
    direct_upload: false
    background_upload: true
    proxy_download: false
    remote_directory: "artifacts"
    connection:
      provider: OpenStack
      openstack_username: OS_USERNAME
      openstack_api_key: OS_PASSWORD
      openstack_temp_url_key: OS_TEMP_URL_KEY
      openstack_auth_url: 'https://auth.cloud.ovh.net'
      openstack_region: GRA
      openstack_tenant_id: OS_TENANT_ID

Save the file and restart GitLab for the changes to take effect.

Migrate any existing local artifacts to the object storage:

sudo -u git -H bundle exec rake gitlab:artifacts:migrate RAILS_ENV=production

Migrating from object storage to local storage

In Omnibus installations:

To migrate back to local storage:

Set both direct_upload and background_upload to false in gitlab.rb, under the artifacts object storage settings.
Reconfigure GitLab.
Run gitlab-rake gitlab:artifacts:migrate_to_local.
Disable object_storage for artifacts in gitlab.rb:
- Set gitlab_rails['artifacts_object_store_enabled'] = false.
- Comment out all other artifacts_object_store settings, including the entire artifacts_object_store_connection section, including the closing }.
Reconfigure GitLab.

Expiring artifacts

If artifacts:expire_in is used to set an expiry for the artifacts, they are marked for deletion right after that date passes. Otherwise, they expire per the default artifacts expiration setting.

Artifacts are cleaned up by the expire_build_artifacts_worker cron job which Sidekiq runs every hour at 50 minutes (50 * * * *).

To change the default schedule on which the artifacts are expired, follow the steps below.

In Omnibus installations:

Edit /etc/gitlab/gitlab.rb and add the following line (or uncomment it if it already exists and is commented out), substituting your schedule in cron syntax:
```
gitlab_rails['expire_build_artifacts_worker_cron'] = "50 * * * *"
```
Save the file and reconfigure GitLab for the changes to take effect.

In installations from source:

Edit /home/git/gitlab/config/gitlab.yml and add or amend the following lines:
```
expire_build_artifacts_worker:
  cron: "50 * * * *"
```
Save the file and restart GitLab for the changes to take effect.

If the expire directive is not set explicitly in your pipeline, artifacts expire per the default artifacts expiration setting, which you can find in the CI/CD Admin settings.

Validation for dependencies

Introduced in GitLab 10.3.

To disable the dependencies validation, you can enable the ci_disable_validates_dependencies feature flag from a Rails console.

In Omnibus installations:

Enter the Rails console:
```
sudo gitlab-rails console
```

Enable the feature flag to disable the validation:

Feature.enable(:ci_disable_validates_dependencies)

In installations from source:

Enter the Rails console:

cd /home/git/gitlab
sudo -u git -H bundle exec rails console -e production

Enable the feature flag to disable the validation:

Feature.enable(:ci_disable_validates_dependencies)

Set the maximum file size of the artifacts

If artifacts are enabled, you can change the maximum file size of the artifacts through the Admin Area settings.

Storage statistics

You can see the total storage used for job artifacts on groups and projects in the administration area, as well as through the groups and projects APIs.

Implementation details

When GitLab receives an artifacts archive, an archive metadata file is also generated by GitLab Workhorse. This metadata file describes all the entries that are located in the artifacts archive itself. The metadata file is in a binary format, with additional Gzip compression.

GitLab doesn't extract the artifacts archive to save space, memory, and disk I/O. It instead inspects the metadata file which contains all the relevant information. This is especially important when there is a lot of artifacts, or an archive is a very large file.

When clicking on a specific file, GitLab Workhorse extracts it from the archive and the download begins. This implementation saves space, memory and disk I/O.

Troubleshooting

Job artifacts using too much disk space

Job artifacts can fill up your disk space quicker than expected. Some possible reasons are:

Users have configured job artifacts expiration to be longer than necessary.
The number of jobs run, and hence artifacts generated, is higher than expected.
Job logs are larger than expected, and have accumulated over time.

In these and other cases, identify the projects most responsible for disk space usage, figure out what types of artifacts are using the most space, and in some cases, manually delete job artifacts to reclaim disk space.

One possible first step is to clean up orphaned artifact files.

List projects by total size of job artifacts stored

List the top 20 projects, sorted by the total size of job artifacts stored, by running the following code in the Rails console (sudo gitlab-rails console):

include ActionView::Helpers::NumberHelper
ProjectStatistics.order(build_artifacts_size: :desc).limit(20).each do |s|
  puts "#{number_to_human_size(s.build_artifacts_size)} \t #{s.project.full_path}"
end

You can change the number of projects listed by modifying .limit(20) to the number you want.

List largest artifacts in a single project

List the 50 largest job artifacts in a single project by running the following code in the Rails console (sudo gitlab-rails console):

include ActionView::Helpers::NumberHelper
project = Project.find_by_full_path('path/to/project')
Ci::JobArtifact.where(project: project).order(size: :desc).limit(50).map { |a| puts "ID: #{a.id} - #{a.file_type}: #{number_to_human_size(a.size)}" }

You can change the number of job artifacts listed by modifying .limit(50) to the number you want.

Delete job artifacts from jobs completed before a specific date

WARNING: These commands remove data permanently from the database and from disk. We highly recommend running them only under the guidance of a Support Engineer, or running them in a test environment with a backup of the instance ready to be restored, just in case.

If you need to manually remove job artifacts associated with multiple jobs while retaining their job logs, this can be done from the Rails console (sudo gitlab-rails console):

Select jobs to be deleted:

To select all jobs with artifacts for a single project:

project = Project.find_by_full_path('path/to/project')
builds_with_artifacts =  project.builds.with_downloadable_artifacts

To select all jobs with artifacts across the entire GitLab instance:

builds_with_artifacts = Ci::Build.with_downloadable_artifacts

Delete job artifacts older than a specific date:

NOTE: This step also erases artifacts that users have chosen to "keep".
```
builds_to_clear = builds_with_artifacts.where("finished_at < ?", 1.week.ago)
builds_to_clear.find_each do |build|
  build.artifacts_expire_at = Time.now
  build.erase_erasable_artifacts!
end
```
1.week.ago is a Rails ActiveSupport::Duration method which calculates a new date or time in the past. Other valid examples are:
- 7.days.ago
- 3.months.ago
- 1.year.ago

Delete job artifacts and logs from jobs completed before a specific date

If you need to manually remove all job artifacts associated with multiple jobs, including job logs, this can be done from the Rails console (sudo gitlab-rails console):

Select jobs to be deleted:

To select jobs with artifacts for a single project:

project = Project.find_by_full_path('path/to/project')
builds_with_artifacts =  project.builds.with_existing_job_artifacts(Ci::JobArtifact.trace)

To select jobs with artifacts across the entire GitLab instance:

builds_with_artifacts = Ci::Build.with_existing_job_artifacts(Ci::JobArtifact.trace)

Select the user which is mentioned in the web UI as erasing the job:
```
admin_user = User.find_by(username: 'username')
```

Erase job artifacts and logs older than a specific date:

builds_to_clear = builds_with_artifacts.where("finished_at < ?", 1.week.ago)
builds_to_clear.find_each do |build|
  print "Ci::Build ID #{build.id}... "

  if build.erasable?
    build.erase(erased_by: admin_user)
    puts "Erased"
  else
    puts "Skipped (Nothing to erase or not erasable)"
  end
end

1.week.ago is a Rails ActiveSupport::Duration method which calculates a new date or time in the past. Other valid examples are:

7.days.ago
3.months.ago
1.year.ago