Merge branch '9901-documentation-improve-selective-sync-documentation-docs' into 'master'

Documentation : Improve selective sync documentation

Closes #9901

See merge request gitlab-org/gitlab-ee!11072

doc/administration/geo/replication/configuration.md

@@ -175,7 +175,7 @@ keys must be manually replicated to the **secondary** node.
    (`/admin/geo/nodes`) in your browser.
 1. Add the **secondary** node by providing its full URL. **Do NOT** check the
    **This is a primary node** checkbox.
-1. Optionally, choose which namespaces should be replicated by the
+1. Optionally, choose which groups or storage shards should be replicated by the
    **secondary** node. Leave blank to replicate all. Read more in
    [selective synchronization](#selective-synchronization).
 1. Click the **Add node** button.
@@ -278,24 +278,23 @@ Currently, this is what is synced:
 
 Geo supports selective synchronization, which allows admins to choose
 which projects should be synchronized by **secondary** nodes.
+A subset of projects can be chosen, either by group or by storage shard. The
+former is ideal for replicating data belonging to a subset of users, while the
+latter is more suited to progressively rolling out Geo to a large GitLab
+instance.
 
-It is important to note that selective synchronization does not:
+It is important to note that selective synchronization:
 
-1. Restrict permissions from **secondary** nodes.
-1. Hide project metadata from **secondary** nodes.
+1. Does not restrict permissions from **secondary** nodes.
+1. Does not hide project metadata from **secondary** nodes.
    - Since Geo currently relies on PostgreSQL replication, all project metadata
      gets replicated to **secondary** nodes, but repositories that have not been
      selected will be empty.
-1. Reduce the number of events generated for the Geo event log.
+1. Does not reduce the number of events generated for the Geo event log.
    - The **primary** node generates events as long as any **secondary** nodes are present.
      Selective synchronization restrictions are implemented on the **secondary** nodes,
      not the **primary** node.
 
-A subset of projects can be chosen, either by group or by storage shard. The
-former is ideal for replicating data belonging to a subset of users, while the
-latter is more suited to progressively rolling out Geo to a large GitLab
-instance.
-
 ## Upgrading Geo
 
 See the [updating the Geo nodes document](updating_the_geo_nodes.md).

ee/changelogs/unreleased/9901-documentation-improve-selective-sync-documentation.yml

+---
+title: 'Documentation : Improve selective sync documentation'
+merge_request: 11072
+author:
+type: changed