Enable Semver Dialect Errors in Sentry

Overview

This runbook provides instructions for enabling the reporting into Sentry of SemverDialect errors generated within the GitLab rails application. This reporting is behind the track_semver_dialect_errors_for_cvs_in_sentry OPS feature flag, which is disabled by default. This prevents flooding our Sentry system with too many errors generated from processing invalid or unsuported user data on gitlab.com.

Note: this feature flag should be removed by 18.4: https://gitlab.com/gitlab-org/gitlab/-/issues/491612

Procedure

1. Enable the feature flag on production environment: /chatops run feature set track_semver_dialect_errors_for_cvs_in_sentry true --production
2. Monitor SemverDialects errors on Sentry: https://new-sentry.gitlab.net/organizations/gitlab/issues/?query=is%3Aunresolved+SemverDialects
3. Create issues for reported errors that need to be addressed.
4. Disable the feature flag on production environment: /chatops run feature set track_semver_dialect_errors_for_cvs_in_sentry false --production
5. Fix the issue.
6. Repeat