GitLab Geo not working in 8.13.1

ZD: https://gitlab.zendesk.com/agent/tickets/46518

gitlab-org/gitlab-ce!6095 was introduced in 8.13.1, which causes all Markdown to be saved in the DB. The problem is that if a Geo (#76) secondary node is being used, the secondary only has read-only access to the DB.

I think we need to add a check to disable this feature if the node is a secondary.

/cc: @nick.thomas

This also applies to Sidekiq workers such as PruneOldEventsWorker.

Mentioned in commit 4d39dbcb

Mentioned in merge request !834 (merged)

Mentioned in commit f6fe5422

Reassigned to @nick.thomas

Mentioned in commit 0f5ec763

Mentioned in commit 582926b7

Milestone changed to %8.14

Mentioned in commit 97e39069

Mentioned in commit ee60ec8d

Status changed to closed by merge request !834 (merged)

Status changed to closed by commit ee60ec8d

marked this issue as related to #1744 (closed)