[Feature flag] Enable group_multi_select_tokens
Summary
This issue is to roll out the feature on production, that is currently behind the <feature-flag-name>
feature flag.
Owners
- Most appropriate Slack channel to reach out to:
#g_project_management
- Best individual to reach out to: @psimyn
Expectations
What are we expecting to happen?
What can go wrong and how would we detect it?
Rollout Steps
Note: Please make sure to run the chatops commands in the Slack channel that gets impacted by the command.
Rollout on non-production environments
-
Verify the MR with the feature flag is merged to
master
and have been deployed to non-production environments with/chatops run auto_deploy status <merge-commit-of-your-feature>
-
Deploy the feature flag at a percentage (recommended percentage: 50%) with/chatops run feature set <feature-flag-name> <rollout-percentage> --actors --dev --staging --staging-ref
-
Monitor that the error rates did not increase (repeat with a different percentage as necessary). -
Enable the feature globally on non-production environments with/chatops run feature set <feature-flag-name> true --dev --staging --staging-ref
-
Verify that the feature works as expected. The best environment to validate the feature in is staging-canary
as this is the first environment deployed to. Make sure you are configured to use canary. -
If the feature flag causes end-to-end tests to fail, disable the feature flag on staging to avoid blocking.deployments
For assistance with end-to-end test failures, please reach out via the #quality
Slack channel. Note that end-to-end test failures on staging-ref
don't block deployments.
Specific rollout on production
For visibility, all /chatops
commands that target production should be executed in the #production
Slack channel and cross-posted (with the command results) to the responsible team's Slack channel.
-
Ensure that the feature MRs have been deployed to both production and canary with /chatops run auto_deploy status <merge-commit-of-your-feature>
-
Depending on the type of actor you are using, pick one of these options: - For project-actor:
/chatops run feature set --project=gitlab-org/gitlab,gitlab-org/gitlab-foss,gitlab-com/www-gitlab-com <feature-flag-name> true
- For group-actor:
/chatops run feature set --group=gitlab-org,gitlab-com <feature-flag-name> true
- For user-actor:
/chatops run feature set --user=<your-username> <feature-flag-name> true
- For project-actor:
-
Verify that the feature works for the specific actors.
Preparation before global rollout
-
Set a milestone to this rollout issue to signal for enabling and removing the feature flag when it is stable. -
Check if the feature flag change needs to be accompanied with a. Cross link the issue here if it does.change management issue -
Ensure that you or a representative in development can be available for at least 2 hours after feature flag updates in production. If a different developer will be covering, or an exception is needed, please inform the oncall SRE by using the @sre-oncall
Slack alias. -
Ensure that.documentation has been updated -
Leave a comment on the feature issue announcing estimated time when this feature flag will be enabled on GitLab.com. -
Ensure that any breaking changes have been announced following theto ensure GitLab customers are aware.release post process -
Notify theand your team channel (#support_gitlab-com
Slack channelmore guidance when this is necessary in the dev docs). -
Ensure that the feature flag rollout plan is reviewed by another developer familiar with the domain.
Global rollout on production
For visibility, all /chatops
commands that target production should be executed in the #production
Slack channel and cross-posted (with the command results) to the responsible team's Slack channel (#g_TEAM_NAME
).
-
(Optional)the feature on production environment.Incrementally roll out- Between every step wait for at least 15 minutes and monitor the appropriate graphs on https://dashboards.gitlab.net.
- Perform actor-based rollout:
/chatops run feature set <feature-flag-name> <rollout-percentage> --actors
-
Enable the feature globally on production environment: /chatops run feature set <feature-flag-name> true
-
~~Observe appropriate graphs on ~~~~https://dashboards.gitlab.net~~~~ and verify that services are not affected.~~ -
Leave a comment on the feature issue announcing that the feature has been globally enabled. -
Wait for at least one day for the verification term.
Release the feature
After the feature has been deemed stable, the clean up should be done as soon as possible to permanently enable the feature and reduce complexity in the codebase.
You can either create a follow-up issue for Feature Flag Cleanup or use the checklist below in this same issue.
-
Create a merge request to remove the <feature-flag-name>
feature flag. Ask for review/approval/merge as usual. The MR should include the following changes:- Remove all references to the feature flag from the codebase.
- Remove the YAML definitions for the feature from the repository.
- Create a changelog entry.
-
Ensure that the cleanup MR has been included in the release package. If the merge request was deployed before the monthly release was tagged, the feature can be officially announced in a release blog post: /chatops run release check <merge-request-url> <milestone>
-
Close the feature issue to indicate the feature will be released in the current milestone. -
Clean up the feature flag from all environments by running these chatops command in #production
channel:/chatops run feature delete <feature-flag-name> --dev --staging --staging-ref --production
-
Close this rollout issue.
Rollback Steps
-
This feature can be disabled by running the following Chatops command:
/chatops run feature set group_multi_select_tokens false