Update BYOC Monitoring integration

docs/cloud/features/04_infrastructure/byoc.md

@@ -357,6 +357,7 @@
 ## Observability {#observability}
 
 ### Built-in monitoring tools {#built-in-monitoring-tools}
+ClickHouse BYOC provides several approaches for various use cases.
 
 #### Observability dashboard {#observability-dashboard}
 
@@ -378,8 +379,20 @@
 
 <br />
 
+#### Access the BYOC Prometheus stack {#prometheus-access}
+ClickHouse BYOC deploys a Prometheus stack on your Kubernetes cluster. You may access and scrape the metrics from there and integrate them with your own monitoring stack.
+
+Contact ClickHouse support to enable the Private Load balancer and ask for the URL. Please note that this URL is only accessible via private network and does not support authentication
+
+**Sample URL**
+```bash
+https://prometheus-internal.<subdomain>.<region>.aws.clickhouse-byoc.com/query
+```
+
 #### Prometheus Integration {#prometheus-integration}
 
+**DEPRECATED: ** Please use the Prometheus stack integration in the above section instead. Besides the ClickHouse Server metrics, it provides more metrics including the K8S metrics and metrics from other services.
+
 ClickHouse Cloud provides a Prometheus endpoint that you can use to scrape metrics for monitoring. This allows for integration with tools like Grafana and Datadog for visualization.
 
 **Sample request via https endpoint /metrics_all**
@@ -419,8 +432,22 @@
 A ClickHouse username and password pair can be used for authentication. We recommend creating a dedicated user with minimal permissions for scraping metrics. At minimum, a `READ` permission is required on the `system.custom_metrics` table across replicas. For example:
 
 ```sql
-GRANT REMOTE ON *.* TO scraping_user
-GRANT SELECT ON system.custom_metrics TO scraping_user
+GRANT REMOTE ON *.* TO scrapping_user;
+GRANT SELECT ON system._custom_metrics_dictionary_custom_metrics_tables TO scrapping_user;
+GRANT SELECT ON system._custom_metrics_dictionary_database_replicated_recovery_time TO scrapping_user;
+GRANT SELECT ON system._custom_metrics_dictionary_failed_mutations TO scrapping_user;
+GRANT SELECT ON system._custom_metrics_dictionary_group TO scrapping_user;
+GRANT SELECT ON system._custom_metrics_dictionary_shared_catalog_recovery_time TO scrapping_user;
+GRANT SELECT ON system._custom_metrics_dictionary_table_read_only_duration_seconds TO scrapping_user;
+GRANT SELECT ON system._custom_metrics_view_error_metrics TO scrapping_user;
+GRANT SELECT ON system._custom_metrics_view_histograms TO scrapping_user;
+GRANT SELECT ON system._custom_metrics_view_metrics_and_events TO scrapping_user;
+GRANT SELECT(description, metric, value) ON system.asynchronous_metrics TO scrapping_user;
+GRANT SELECT ON system.custom_metrics TO scrapping_user;
+GRANT SELECT(name, value) ON system.errors TO scrapping_user;
+GRANT SELECT(description, event, value) ON system.events TO scrapping_user;
+GRANT SELECT(description, labels, metric, value) ON system.histogram_metrics TO scrapping_user;
+GRANT SELECT(description, metric, value) ON system.metrics TO scrapping_user;
 ```
 
 **Configuring Prometheus**