Add WAL-E alert and runbook
This MR closes https://gitlab.com/gitlab-com/infrastructure/issues/2227
Added:
- Alert for WAL-E backups not being pushed for 1h.
- Runbook
/cc @gl-infra
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This MR closes https://gitlab.com/gitlab-com/infrastructure/issues/2227
Added:
/cc @gl-infra