Merge pull request #8956 from wazuh/enhancement/idr369-upgrade-guide-improvements

Improve upgrade guide: Add Wazuh Inventory Harvester

Author: javimed

CHANGELOG.md

@@ -10,7 +10,7 @@ All notable changes to this project will be documented in this file.
 
 ### Changed
 
-- **Post-release**: Updated the upgrade guide for Wazuh central components. ([#8934](https://github.com/wazuh/wazuh-documentation/pull/8934)) ([#8941](https://github.com/wazuh/wazuh-documentation/pull/8941)) ([#8944](https://github.com/wazuh/wazuh-documentation/pull/8944)) ([#8947](https://github.com/wazuh/wazuh-documentation/pull/8947))
+- **Post-release**: Updated the upgrade guide for Wazuh central components. ([#8934](https://github.com/wazuh/wazuh-documentation/pull/8934)) ([#8941](https://github.com/wazuh/wazuh-documentation/pull/8941)) ([#8944](https://github.com/wazuh/wazuh-documentation/pull/8944)) ([#8947](https://github.com/wazuh/wazuh-documentation/pull/8947)) ([#8956](https://github.com/wazuh/wazuh-documentation/pull/8956))
 - **Post-release**: Added indexer connector configuration steps to vulnerability detection documentation and removed troubleshooting section. ([#8942](https://github.com/wazuh/wazuh-documentation/pull/8942))
 - **Post-release**: Updated the *Navigating the Wazuh dashboard* section. ([#8950](https://github.com/wazuh/wazuh-documentation/pull/8950))
 - **Post-release**: Updated the System inventory documentation. ([#8955](https://github.com/wazuh/wazuh-documentation/pull/8955))

source/upgrade-guide/upgrading-central-components.rst

@@ -432,12 +432,14 @@ When upgrading from Wazuh 4.12.x or earlier, follow these steps to configure the
 
 .. _configuring_vulnerability_detection:
 
-Configuring vulnerability detection
-^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+Configuring the vulnerability detection and indexer connector
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-If upgrading from version 4.8.x or later, skip the vulnerability detection configuration and proceed to :ref:`configuring_filebeat`. No action is needed as the vulnerability detection block is already configured.
+The Wazuh Inventory Harvester and Vulnerability Detection modules rely on the :doc:`indexer connector </user-manual/reference/ossec-conf/indexer>` setting to forward system inventory data and detected vulnerabilities to the Wazuh indexer.
 
-When upgrading from Wazuh version 4.7.x or earlier, follow these steps to configure the vulnerability detection block.
+If upgrading from version 4.8.x or later, skip the vulnerability detection and indexer connector configurations and proceed to :ref:`configuring_filebeat`. No action is needed as the vulnerability detection and indexer connector blocks are already configured.
+
+When upgrading from Wazuh version 4.7.x or earlier, follow these steps to configure the vulnerability detection and indexer connector blocks.
 
 #. Update the configuration file