Merge branch 'jgaughan-master-patch-15032' into 'master'

Specify nodes on which to configure single db connection setting

See merge request https://gitlab.com/gitlab-org/omnibus-gitlab/-/merge_requests/7285

Merged-by: Achilleas Pipinellis <[email protected]>
Co-authored-by: John Gaughan <[email protected]>

Author: axilleas

doc/settings/database.md

@@ -600,6 +600,8 @@ update this setting in `/etc/gitlab/gitlab.rb`:
 gitlab_rails['databases']['ci']['enable'] = false
 ```
 
+In a multi-node environment, this setting should be updated on all Rails and Sidekiq nodes. 
+
 ## Using a non-packaged PostgreSQL database management server
 
 By default, GitLab is configured to use the PostgreSQL server that's included