Update modules/configuring/proc-preparing-your-external-services.adoc

Author: themr0c

modules/configuring/proc-preparing-your-external-services.adoc

@@ -18,6 +18,16 @@ Connection to your identity provider::
 Provide credentials to your identity provider to enable user provisioning and authentication.
 
 .Procedure
+* Get your external PostgreSQL database connection strings and certificates. 
+postgres-host::: Your PostgreSQL instance Domain Name System (DNS) or IP address.
+postgres-port::: Your PostgreSQL instance port number, such as 5432.
+postres-username::: The user name to connect to your PostgreSQL instance.
+postgres-password::: The password to connect to your PostgreSQL instance.
+postgres-ca.pem:::
+postgres-key.key:::
+postgres-crt.pem:::
+For security, use TLS certificates to secure the connection to the database.
+
 . Get your Redis cache server connection string, such as `rediss://user:[email protected]:6379`.
 For security, consider using a `rediss` secure server connection.