Merge branch 'docs/link-ext-psql-config-steps' into 'master'

Link back to full external PSQL config steps

See merge request gitlab-org/gitlab!40315

doc/administration/reference_architectures/10k_users.md

@@ -325,6 +325,9 @@ If you use a cloud-managed service, or provide your own PostgreSQL:
 1. Configure the GitLab application servers with the appropriate details.
    This step is covered in [Configuring the GitLab Rails application](#configure-gitlab-rails).
 
+See [Configure GitLab using an external PostgreSQL service](../postgresql/external.md) for
+further configuration steps.
+
 ### Standalone PostgreSQL using Omnibus GitLab
 
 The following IPs will be used as an example:

doc/administration/reference_architectures/25k_users.md

@@ -325,6 +325,9 @@ If you use a cloud-managed service, or provide your own PostgreSQL:
 1. Configure the GitLab application servers with the appropriate details.
    This step is covered in [Configuring the GitLab Rails application](#configure-gitlab-rails).
 
+See [Configure GitLab using an external PostgreSQL service](../postgresql/external.md) for
+further configuration steps.
+
 ### Standalone PostgreSQL using Omnibus GitLab
 
 The following IPs will be used as an example:

doc/administration/reference_architectures/2k_users.md

@@ -193,6 +193,9 @@ If you use a cloud-managed service, or provide your own PostgreSQL:
 1. Configure the GitLab application servers with the appropriate details.
    This step is covered in [Configuring the GitLab Rails application](#configure-gitlab-rails).
 
+See [Configure GitLab using an external PostgreSQL service](../postgresql/external.md) for
+further configuration steps.
+
 ### Standalone PostgreSQL using Omnibus GitLab
 
 1. SSH into the PostgreSQL server.

doc/administration/reference_architectures/3k_users.md

@@ -600,6 +600,9 @@ If you use a cloud-managed service, or provide your own PostgreSQL:
 1. Configure the GitLab application servers with the appropriate details.
    This step is covered in [Configuring the GitLab Rails application](#configure-gitlab-rails).
 
+See [Configure GitLab using an external PostgreSQL service](../postgresql/external.md) for
+further configuration steps.
+
 ### Standalone PostgreSQL using Omnibus GitLab
 
 The following IPs will be used as an example:

doc/administration/reference_architectures/50k_users.md

@@ -325,6 +325,9 @@ If you use a cloud-managed service, or provide your own PostgreSQL:
 1. Configure the GitLab application servers with the appropriate details.
    This step is covered in [Configuring the GitLab Rails application](#configure-gitlab-rails).
 
+See [Configure GitLab using an external PostgreSQL service](../postgresql/external.md) for
+further configuration steps.
+
 ### Standalone PostgreSQL using Omnibus GitLab
 
 The following IPs will be used as an example:

doc/administration/reference_architectures/5k_users.md

@@ -600,6 +600,9 @@ If you use a cloud-managed service, or provide your own PostgreSQL:
 1. Configure the GitLab application servers with the appropriate details.
    This step is covered in [Configuring the GitLab Rails application](#configure-gitlab-rails).
 
+See [Configure GitLab using an external PostgreSQL service](../postgresql/external.md) for
+further configuration steps.
+
 ### Standalone PostgreSQL using Omnibus GitLab
 
 The following IPs will be used as an example: