[Feature flag] Rollout of `redact_resolved_secret_details`
## Summary
This issue is to roll out the feature on production, that is currently behind the `redact_resolved_secret_details` feature flag.
Introduced by: https://gitlab.com/gitlab-org/gitlab/-/merge_requests/240112 — *Redact Secret from Vuln Details once it is No Longer Detected*
Feature flag definition: `config/feature_flags/gitlab_com_derisk/redact_resolved_secret_details.yml`
## Owners
- Most appropriate Slack channel to reach out to: `#g_srm_security_insights`
- Best individual to reach out to: @subashis
## Expectations
### What are we expecting to happen?
When a previously detected secret vulnerability is no longer detected on subsequent scans (i.e. it has been resolved), the raw secret value should be redacted from the vulnerability details view so it is no longer exposed in the UI/API responses.
### What can go wrong and how would we detect it?
- Secret values may continue to be displayed for resolved vulnerabilities (redaction not applied) — detectable via QA and manual verification of resolved secret vulnerabilities.
- Active (still-detected) secret vulnerabilities could be incorrectly redacted — detectable through user reports and verification on staging-canary.
- Performance regressions on the vulnerability details endpoint — monitor latency dashboards on https://dashboards.gitlab.net.
## 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 has been deployed to non-production environments with `/chatops gitlab run auto_deploy status <merge-commit-of-your-feature>`
- [ ] Deploy the feature flag at a percentage (recommended percentage: 50%) with `/chatops gitlab run feature set redact_resolved_secret_details 50 --actors --dev --pre --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 gitlab run feature set redact_resolved_secret_details true --dev --pre --staging --staging-ref`
- [ ] Verify that the feature works as expected.
The best environment to validate the feature in is [`staging-canary`](https://about.gitlab.com/handbook/engineering/infrastructure/environments/#staging-canary) as this is the first environment deployed to. Make sure you are [configured to use canary](https://next.gitlab.com/).
- [ ] If the feature flag causes end-to-end tests to fail, disable the feature flag on staging to avoid blocking [deployments](https://about.gitlab.com/handbook/engineering/deployments-and-releases/deployments/).
### Before production rollout
- [ ] If the change is significant and you wanted to announce in [#whats-happening-at-gitlab](https://gitlab.enterprise.slack.com/archives/C0259241C), it best to do it before rollout to `gitlab-org/gitlab-com`.
### Specific rollout on production
For visibility, all `/chatops` commands that target production must be executed in the [`#production` Slack channel](https://gitlab.slack.com/archives/C101F3796) 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 gitlab run auto_deploy status <merge-commit-of-your-feature>`
- [ ] Depending on the [type of actor](https://docs.gitlab.com/development/feature_flags/#feature-actors) you are using, pick one of these options:
- For **project-actor**: `/chatops gitlab run feature set --project=gitlab-org/gitlab,gitlab-org/gitlab-foss,gitlab-com/www-gitlab-com redact_resolved_secret_details true`
- For **group-actor**: `/chatops gitlab run feature set --group=gitlab-org,gitlab-com redact_resolved_secret_details true`
- For **user-actor**: `/chatops gitlab run feature set --user=subashis redact_resolved_secret_details true`
- For **all internal users**: `/chatops gitlab run feature set --feature-group=gitlab_team_members redact_resolved_secret_details true`
- [ ] 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 [change management issue](https://about.gitlab.com/handbook/engineering/infrastructure-platforms/change-management/#feature-flags-and-the-change-management-process). Cross link the issue here if it does.
- [ ] 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 exists for the feature, and the [version history text](https://docs.gitlab.com/development/documentation/feature_flags/#add-history-text) has been updated.
- [ ] Ensure that any breaking changes have been announced following the [release post process](https://about.gitlab.com/handbook/marketing/blog/release-posts/#deprecations-removals-and-breaking-changes) to ensure GitLab customers are aware.
- [ ] Notify the [`#support_gitlab-com` Slack channel](https://gitlab.slack.com/archives/C4XFU81LG) and your team channel ([more guidance when this is necessary in the dev docs](https://docs.gitlab.com/development/feature_flags/controls/#communicate-the-change)).
- [ ] If this flag is or may be queried by external API consumers (for example, IDE extensions, Duo CLI, or CI integrations), follow the [external API consumer guidance](https://docs.gitlab.com/development/feature_flags/#do-not-use-feature-flags-in-external-api-consumers) and ensure a fail-open mechanism is in place before the rollout milestone is finalised.
### Global rollout on production
For visibility, all `/chatops` commands that target production must be executed in the [`#production` Slack channel](https://gitlab.slack.com/archives/C101F3796) and cross-posted (with the command results) to the responsible team's Slack channel.
- [ ] [Incrementally roll out](https://docs.gitlab.com/development/feature_flags/controls/#process) the feature on production.
- Example: `/chatops gitlab run feature set redact_resolved_secret_details <rollout-percentage> --actors`.
- Between every step wait for at least 15 minutes and monitor the appropriate graphs on https://dashboards.gitlab.net.
- [ ] After the feature has been 100% enabled, wait for [at least one day before releasing the feature](#release-the-feature).
### Release the feature
After the feature has been [deemed stable](https://about.gitlab.com/handbook/product-development-flow/feature-flag-lifecycle/#including-a-feature-behind-feature-flag-in-the-final-release), the [clean up](https://docs.gitlab.com/development/feature_flags/controls/#cleaning-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](https://gitlab.com/gitlab-org/gitlab/-/issues/new?description_template=Feature%20Flag%20Cleanup) or use the checklist below in this same issue.
- [ ] Create a merge request to remove the `redact_resolved_secret_details` 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.
- [ ] Ensure that the cleanup MR has been included in the release package.
- [ ] Once the cleanup MR has been deployed to production, clean up the feature flag from all environments by running these chatops command in `#production` channel: `/chatops gitlab run feature delete redact_resolved_secret_details --dev --pre --staging --staging-ref --production`
- [ ] Close this rollout issue.
## Rollback Steps
- [ ] This feature can be disabled on production by running the following Chatops command:
```
/chatops gitlab run feature set redact_resolved_secret_details false
```
- [ ] Disable the feature flag on non-production environments:
```
/chatops gitlab run feature set redact_resolved_secret_details false --dev --pre --staging --staging-ref
```
- [ ] Delete feature flag from all environments:
```
/chatops gitlab run feature delete redact_resolved_secret_details --dev --pre --staging --staging-ref --production
```
issue