Merge pull request #112005 from MikeDodaro/loadBalance-SpringCld

Integrate Azure Spring Cloud with Azure load balancers

Author: megvanhuygen

articles/spring-cloud/media/spring-cloud-load-balancers/app-gateway-1.png

@@ -0,0 +1,90 @@
+---
+title:  Tutorial - Integrate Azure Spring Cloud with Azure Load Balance Solutions
+description: How to integrate Azure Spring Cloud with Azure Load Balance Solutions
+author:  MikeDodaro
+ms.author: brendm
+ms.service: spring-cloud
+ms.topic: how-to
+ms.date: 04/20/2020
+---
+
+# Integrate Azure Spring Cloud with Azure Load Balance Solutions
+
+Azure Spring Cloud supports microservices on Azure.  Increasing business can require multiple data centers with management of multiple instances of Azure Spring Cloud.
+
+Azure already provides different load-balance solutions. There are three options to integrate Azure Spring Cloud with Azure load-balance solutions:
+
+1.	Integrate Azure Spring Cloud with Azure Traffic Manager
+2.	Integrate Azure Spring Cloud with Azure App Gateway
+3.	Integrate Azure Spring Cloud with Azure Front Door
+
+## Prerequisites
+
+* Azure Spring Cloud: [How to create an Azure spring cloud service](https://docs.microsoft.com/azure/spring-cloud/spring-cloud-quickstart-launch-app-portal)
+* Azure Traffic Manager: [How to create a traffic manager](https://docs.microsoft.com/azure/traffic-manager/quickstart-create-traffic-manager-profile/)
+* Azure App Gateway: [How to create an application gateway](https://docs.microsoft.com/azure/application-gateway/quick-create-portal)
+* Azure Front Door: [How to create a front door](https://docs.microsoft.com/azure/frontdoor/quickstart-create-front-door)
+
+## Integrate Azure Spring Cloud with Azure Traffic Manager
+
+To integrate Azure spring cloud with Traffic Manager, add its public endpoints as traffic manager’s endpoints and then configure custom domain for both traffic manager and Azure spring cloud.
+
+### Add Endpoint in Traffic Manager
+Add endpoints in traffic manager:
+1.	Specify **Type** to be *External endpoint*.
+1.	Input fully qualified domain name (FQDN) of each Azure spring cloud public endpoint.
+1. Click **OK**.
+
+    ![Traffic Manager 1](media/spring-cloud-load-balancers/traffic-manager-1.png)
+    ![Traffic Manager 2](media/spring-cloud-load-balancers/traffic-manager-2.png)
+
+### Configure Custom Domain
+To finish the configuration:
+1.	Sign in to the website of your domain provider, and create a CNAME record mapping from your custom domain to traffic manager’s Azure default domain name.
+
+1. Add above custom domain binding to traffic manager to Azure spring cloud corresponding app service and upload SSL certificate there.
+
+    ![Traffic Manager 3](media/spring-cloud-load-balancers/traffic-manager-3.png)
+
+## Integrate Azure Spring Cloud with Azure App Gateway
+
+To integrate with azure spring cloud service, complete the following configurations:
+
+### Configure Backend Pool
+1. Specify **Target type** as *IP address* or *FQDN*.
+1. Enter your Azure spring cloud public endpoints.
+
+    ![App Gateway 1](media/spring-cloud-load-balancers/app-gateway-1.png)
+
+### Add Custom Probe
+1. Select **Health Probes** then **Add** to open custom **Probe** dialog. 
+1. The key point is to select *Yes* for **Pick host name from backend HTTP settings** option.
+
+    ![App Gateway 2](media/spring-cloud-load-balancers/app-gateway-2.png)
+
+### Configure Http Setting
+1.  Select **Http Settings** then **Add** to add an HTTP setting.
+1.	**Override with new host name:** select *Yes*.
+1.	**Host name override**: select **Pick host name from backend target**.
+1.	**Use custom probe**: select *Yes* and pick the custom probe created above.
+
+    ![App Gateway 3](media/spring-cloud-load-balancers/app-gateway-3.png)
+
+## Integrate Azure Spring Cloud with Azure Front Door
+
+To integrate with Azure Spring Cloud service and configure backend pool, 
+1. **Add backend pool**.
+1. Specify the backend endpoint by adding host.
+
+    ![Front Door 1](media/spring-cloud-load-balancers/front-door-1.png)
+
+1.	Specify **backend host type** as *custom host*.
+1.	Input FQDN of your Azure Spring Cloud public endpoints in **backend host name**.
+1.	Accept the **backend host header** default, which is the same as **backend host name**.
+
+    ![Front Door 2](media/spring-cloud-load-balancers/front-door-2.png)
+
+## Next steps
+* [How to create a traffic manager](https://docs.microsoft.com/azure/traffic-manager/quickstart-create-traffic-manager-profile/)
+* [How to create an application gateway](https://docs.microsoft.com/azure/application-gateway/quick-create-portal)
+* [How to create a front door](https://docs.microsoft.com/azure/frontdoor/quickstart-create-front-door)