Update Azure docs for Azure metrics source compatibility (Apps - Part 1) (#5354)

* Update Azure docs

* Update kubernetes.md

---------

Co-authored-by: Himanshu Pal <[email protected]>

Author: amee-sumo

docs/integrations/microsoft-azure/azure-application-gateway.md

@@ -34,103 +34,15 @@ This app supports only Application Gateway V2 since Application Gateway V1 will
 Azure service sends monitoring data to Azure Monitor, which can then [stream data to Eventhub](https://learn.microsoft.com/en-us/azure/azure-monitor/essentials/stream-monitoring-data-event-hubs). Sumo Logic supports:
 
 * Logs collection from [Azure Monitor](https://docs.microsoft.com/en-us/azure/monitoring-and-diagnostics/monitoring-get-started) using our [Azure Event Hubs source](/docs/send-data/collect-from-other-data-sources/azure-monitoring/ms-azure-event-hubs-source/).
-* Metrics collection using our [HTTP Logs and Metrics source](/docs/send-data/collect-from-other-data-sources/azure-monitoring/collect-metrics-azure-monitor/) via Azure Functions deployed using the ARM template.
+* Metrics collection using our [Azure Metrics Source](/docs/send-data/hosted-collectors/microsoft-source/azure-metrics-source).
 
 You must explicitly enable diagnostic settings for each Azure Application Gateway you want to monitor. You can forward logs to the same event hub provided they satisfy the limitations and permissions as described [here](https://learn.microsoft.com/en-us/azure/azure-monitor/essentials/diagnostic-settings?tabs=portal#destination-limitations).
 
 When you configure the event hubs source or HTTP source, plan your source category to ease the querying process. A hierarchical approach allows you to make use of wildcards. For example: `Azure/ApplicationGateway/Logs`, `Azure/ApplicationGateway/Metrics`.
 
-
-### Configure field in field schema
-
-1. [**Classic UI**](/docs/get-started/sumo-logic-ui-classic). In the main Sumo Logic menu, select **Manage Data > Logs > Fields**. <br/>[**New UI**](/docs/get-started/sumo-logic-ui). In the top menu select **Configuration**, and then under **Logs** select **Fields**. You can also click the **Go To...** menu at the top of the screen and select **Fields**. 
-1. Search for the following fields:
-   - `tenant_name`. This field is tagged at the collector level. You can get the tenant name using the instructions [here](https://learn.microsoft.com/en-us/azure/active-directory-b2c/tenant-management-read-tenant-name#get-your-tenant-name).
-   - `location`. The region to which the resource name belongs to.
-   - `subscription_id`. ID associated with a subscription where the resource is present.
-   - `resource_group`. The resource group name where the Azure resource is present.
-   - `provider_name`. Azure resource provider name (for example, Microsoft.Network).
-   - `resource_type`. Azure resource type (for example, storage accounts).
-   - `resource_name`. The name of the resource (for example, storage account name).
-   - `service_type`. Type of the service that can be accessed with a Azure resource.
-   - `service_name`. Services that can be accessed with an Azure resource (for example, Azure SQL databases in Azure SQL Server).
-1. Create the fields if they are not present. Refer to [Manage fields](/docs/manage/fields/#manage-fields).
-
-### Configure Field Extraction Rules
-
-Create the following field extraction rules (FER) for Azure Storage by following the instructions in [Create a Field Extraction Rule](/docs/manage/field-extractions/create-field-extraction-rule/).
-
-#### Azure location extraction FER
-
-   ```sql
-   Rule Name: AzureLocationExtractionFER
-   Applied at: Ingest Time
-   Scope (Specific Data): tenant_name=*
-   ```
-
-   ```sql title="Parse Expression"
-   json "location", "properties.resourceLocation", "properties.region" as location, resourceLocation, service_region nodrop
-   | replace(toLowerCase(resourceLocation), " ", "") as resourceLocation
-   | if (!isBlank(resourceLocation), resourceLocation, location) as location
-   | if (!isBlank(service_region), service_region, location) as location 
-   | if (isBlank(location), "global", location) as location
-   | fields location
-   ```
-
-#### Resource ID extraction FER
-
-   ```sql
-   Rule Name: AzureResourceIdExtractionFER
-   Applied at: Ingest Time
-   Scope (Specific Data): tenant_name=*
-   ```
-
-   ```sql title="Parse Expression"
-   json "resourceId", "ResourceId" as resourceId1, resourceId2 nodrop
-   | if (isBlank(resourceId1), resourceId2, resourceId1) as resourceId
-   | toUpperCase(resourceId) as resourceId
-   | parse regex field=resourceId "/SUBSCRIPTIONS/(?<subscription_id>[^/]+)" nodrop
-   | parse field=resourceId "/RESOURCEGROUPS/*/" as resource_group nodrop
-   | parse regex field=resourceId "/PROVIDERS/(?<provider_name>[^/]+)" nodrop
-   | parse regex field=resourceId "/PROVIDERS/[^/]+(?:/LOCATIONS/[^/]+)?/(?<resource_type>[^/]+)/(?<resource_name>.+)" nodrop
-   | parse regex field=resource_name "(?<parent_resource_name>[^/]+)(?:/PROVIDERS/[^/]+)?/(?<service_type>[^/]+)/?(?<service_name>.+)" nodrop
-   | if (isBlank(parent_resource_name), resource_name, parent_resource_name) as resource_name
-   | fields subscription_id, location, provider_name, resource_group, resource_type, resource_name, service_type, service_name
-   ```
-
-### Configure metric rules
-
-Create the following metrics rules by following the instructions in [Create a metrics rule](/docs/metrics/metric-rules-editor/#create-a-metrics-rule).
-
-#### Azure observability metadata extraction application gateway level
-
-```sql
-Rule Name: AzureObservabilityMetadataExtractionAppGatewayLevel
-```
-
-```sql title="Metric match expression"
-resourceId=/SUBSCRIPTIONS/*/RESOURCEGROUPS/*/PROVIDERS/*/APPLICATIONGATEWAYS/* tenant_name=*
-```
-| Fields extracted  | Metric rule          |
-|:------------------|:---------------------|
-| subscription_id   | $resourceId._1       |
-| resource_group    | $resourceId._2       |
-| provider_name     | $resourceId._3       |
-| resource_type     | APPLICATIONGATEWAYS  |
-| resource_name     | $resourceId._4       |
-
 ### Configure metrics collection
 
-In this section, you will configure a pipeline for shipping metrics from Azure Monitor to an Event Hub, on to an Azure Function, and finally to an HTTP Source on a hosted collector in Sumo Logic.
-
-1. Create a hosted collector and tag the `tenant_name` field. You can get the tenant name using the instructions [here](https://learn.microsoft.com/en-us/azure/active-directory-b2c/tenant-management-read-tenant-name#get-your-tenant-name). <br/><img src={useBaseUrl('img/integrations/microsoft-azure/Azure-Storage-Tag-Tenant-Name.png')} alt="Azure Tag Tenant Name" style={{border: '1px solid gray'}} width="500" />
-2. [Configure an HTTP Source](/docs/send-data/collect-from-other-data-sources/azure-monitoring/collect-metrics-azure-monitor/#step-1-configure-an-http-source).
-3. [Configure and deploy the ARM Template](/docs/send-data/collect-from-other-data-sources/azure-monitoring/collect-metrics-azure-monitor/#step-2-configure-azure-resources-using-arm-template).
-1. [Export metrics to Event Hub](/docs/send-data/collect-from-other-data-sources/azure-monitoring/collect-metrics-azure-monitor/#step-3-export-metrics-for-a-particular-resource-to-event-hub). Perform the steps below for each Azure Application Gateway that you want to monitor.
-   1. Choose `Stream to an event hub` as destination.
-   1. Select `AllMetrics`.
-   1. Use the Event hub namespace created by the ARM template in Step 2 above. You can create a new Event hub or use the one created by ARM template. You can use the default policy `RootManageSharedAccessKey` as the policy name. <br/><img src={useBaseUrl('img/send-data/azureapplicationgateway-metrics.png')} alt="Azure application gateway metrics" style={{border: '1px solid gray'}} width="800" />
-1. Tag the location field in the source with right location value. <br/><img src={useBaseUrl('img/integrations/microsoft-azure/Azure-Storage-Tag-Location.png')} alt="Azure Application Gateway Tag Location" style={{border: '1px solid gray'}} width="400" />
+To set up the Azure Metrics source in Sumo Logic, refer to [Azure Metrics Source](/docs/send-data/hosted-collectors/microsoft-source/azure-metrics-source).
 
 ### Configure logs collection
 
@@ -167,6 +79,18 @@ import AppInstallNoDataSourceV2 from '../../reuse/apps/app-install-index-apps-v2
 
 <AppInstallNoDataSourceV2/>
 
+As part of the app installation process, the following fields will be created by default:
+
+- `tenant_name`. This field is tagged at the collector level. You can get the tenant name using the instructions [here](https://learn.microsoft.com/en-us/azure/active-directory-b2c/tenant-management-read-tenant-name#get-your-tenant-name).
+- `location`. The region to which the resource name belongs to.
+- `subscription_id`. ID associated with a subscription where the resource is present.
+- `resource_group`. The resource group name where the Azure resource is present.
+- `provider_name`. Azure resource provider name (for example, Microsoft.Network).
+- `resource_type`. Azure resource type (for example, storage accounts).
+- `resource_name`. The name of the resource (for example, storage account name).
+- `service_type`. Type of the service that can be accessed with a Azure resource.
+- `service_name`. Services that can be accessed with an Azure resource (for example, in Azure Container Instances the service is Subscriptions).
+
 ## Viewing the Azure Application Gateway dashboards
 
 import ViewDashboards from '../../reuse/apps/view-dashboards.md';
@@ -244,6 +168,17 @@ import AppUninstall from '../../reuse/apps/app-uninstall.md';
 
 <AppUninstall/>
 
+### Azure Application Gateway alerts
+These alerts are metric based and will work for all Azure Application Gateways.
+
+| Alert Name                                           | Alert Description and Conditions                                                                                                                                                           | Alert Condition  | Recover Condition |
+|:-----------------------------------------------------|:-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|:-----------------|:------------------|
+| `Azure Application Gateway - Current Capacity Units` | This alert is triggered  when Average Capacity Units count is greater than 75. Also, a warning type alert will be triggered when Average Capacity Units count is greater than 65.          | percentage >= 75 | percentage < 75   |
+| `Azure Application Gateway - Current Compute Units`  | This alert is triggered  when Average Compute Units count is greater than 75. Also, a warning type alert will be triggered when Average Compute Units count is greater than 65.            | percentage >= 75 | percentage < 75   |
+| `Azure Application Gateway - Failed Requests`        | This alert is triggered when Failed Requests count greater than 1.                                                                                                                         | Count >= 1       | Count < 1         |
+| `Azure Application Gateway - Healthy Host Count`     | This alert is triggered when Healthy Host Count is less than 1.                                                                                                                            | Count < 1        | Count >= 1        |
+| `Azure Application Gateway - UnHealthy Host Count`   | This alert is triggered when UnHealthy Host Count is greater than 1                                                                                                                        | Count >= 1       | Count < 1         |
+
 ## Troubleshooting
 
 ### HTTP Logs and Metrics Source used by Azure Functions