Azure-Advanced-Networking

M04-Unit 6 Create a Traffic Manager profile using the Azure portal

In this exercise, you will create a Traffic Manager profile to deliver high availability for the fictional Contoso Ltd organization’s web application.

Estimated time: 35 minutes

You will create two instances of a web application deployed in two different regions (East US and West Europe). The East US region will act as a primary endpoint for Traffic Manager, and the West Europe region will act as a failover endpoint.

You will then create a Traffic Manager profile based on endpoint priority. This profile will direct user traffic to the primary site running the web application. Traffic Manager will continuously monitor the web application, and if the primary site in East US is unavailable, it will provide automatic failover to the backup site in West Europe.

The diagram below approximately illustrates the environment you will be deploying in this exercise.

​ Picture 14

In this exercise, you will:

Task 1: Create the web apps

In this section, you will create two instances of a web application deployed in the two different Azure regions.

  1. On the Azure portal home page, select Create a resource, then select Web App (if this resource type is not listed on the page, use the search box at the top of the page to search for it and select it).

  2. On the Create Web App page, on the Basics tab, use the information in the table below to create the first web application.

    Setting Value
    Subscription Select your subscription
    Resource group Select Create new Name: Contoso-RG-TM1
    Name ContosoWebAppEastUSxx (where xx are your initials to make the name unique)
    Publish Code
    Runtime stack ASP.NET V4.8
    Operating system Windows
    Region East US
    Windows Plan Select Create new Name: ContosoAppServicePlanEastUS
    Pricing Plan Standard S1 100 total ACU, 1.75-GB memory

  3. Select Monitoring tab.

  4. On the Monitoring tab, select the No option for Enable Application Insights.

  5. Select Review + create.

    Picture 18

  6. Select Create. When the Web App successfully deploys, it creates a default web site.

  7. Repeat steps 1-6 above to create a second web app. Use the same settings as before except for the information in the table below.

    Setting Value
    Resource group Select Create new Name: Contoso-RG-TM1
    Name ContosoWebAppWestEuropexx (where xx are your initials to make the name unique)
    Region West Europe
    Windows Plan Select Create new Name: ContosoAppServicePlanWestEurope

  8. Wait for both deployments to complete.

  9. On the Azure home page, select More services, in the left navigation menu, select Web, and then select App Services.

  10. You should see the two new web apps listed.

    Picture 19

Task 2: Create a Traffic Manager profile

Now you will create a Traffic Manager profile that directs user traffic based on endpoint priority.

  1. On the Azure portal home page, select Create a resource.

  2. In the search box at the top of the page, type Traffic Manager profile, and then select it from the pop-up list.

    Picture 20

  3. Select Create.

  4. On the Create Traffic Manager profile page, use the information in the table below to create the Traffic Manager profile.

    Setting Value
    Name Contoso-TMProfilexx (where xx are your initials to make the name unique)
    Routing method Priority
    Subscription Select your subscription
    Resource group Contoso-RG-TM1
    Resource group location East US

  5. Select Create.

  6. Wait for the deployment to complete.

Task 3: Add Traffic Manager endpoints

In this section, you will add the website in the East US as the primary endpoint to route all the user traffic. You will then add the website in West Europe as a failover endpoint. If the primary endpoint becomes unavailable, then traffic will automatically be routed to the failover endpoint.

  1. On the Azure portal home page, select All resources, then select on Contoso-TMProfile in the resources list.

  2. Under Settings, select Endpoints, and then select + Add.

    Picture 21

  3. On the Add endpoint page, enter the information from the table below.

    Setting Value
    Type Azure endpoint
    Name myPrimaryEndpoint
    Target resource type App Service
    Target resource ContosoWebAppEastUS (East US)
    Priority 1

  4. Select Add.

  5. Repeat steps 2-4 above to create the failover endpoint. Use the same settings as before except for the information in the table below.

    Setting Value
    Name myFailoverEndpoint
    Target resource ContosoWebAppWestEurope (West Europe)
    Priority 2

  6. Setting a priority of 2 means that traffic will route to this failover endpoint if the configured primary endpoint becomes unhealthy.

  7. The two new endpoints are displayed in the Traffic Manager profile. Notice that after a few minutes the Monitoring status should change to Online.

    Picture 22

Task 4: Test the Traffic Manager profile

In this section, you will check the DNS name of your Traffic Manager profile, and then you will configure the primary endpoint so that it is unavailable. You will then verify that the web app is still available, to test that the Traffic Manager profile is successfully sending traffic to the failover endpoint.

  1. On the Contoso-TMProfile page, select Overview.

  2. On the Overview screen, copy the DNS name entry to the clipboard (or take note of it somewhere).

    Picture 23

  3. Open a web browser tab, and paste (or enter) the DNS name entry (contoso-tmprofile.trafficmanager.net) into the address bar, and press Enter.

  4. The web app’s default web site should be displayed. If you get 404 Web Site not found message, Disable profile from Contoso-TMProfilexx Traffic Manager profile overview page and Enable profile. Then refresh the webpage.

    Picture 24

  5. Currently all traffic is being sent to the primary endpoint as you set its Priority to 1.

  6. To test the failover endpoint is working properly, you need to disable the primary site.

  7. On the Contoso-TMProfile page, on the overview screen, select myPrimaryEndpoint.

  8. On the myPrimaryEndpoint page, under Status, select Disabled, and then select Save.

    Picture 25

  9. Close the myPrimaryEndpoint page (select the X in the top right corner of the page).

  10. On the Contoso-TMProfile page, the Monitor status for myPrimaryEndpoint should now be Disabled.

  11. Open a new web browser session, and paste (or enter) the DNS name entry (contoso-tmprofile.trafficmanager.net) into the address bar, and press Enter.

  12. Verify that the web app is still responding. As the primary endpoint was not available, the traffic was instead routed to the failover endpoint to allow the web site to still function.

## Task 5: Clean up resources

Note: Remember to remove any newly created Azure resources that you no longer use. Removing unused resources ensures you will not see unexpected charges.

  1. On the Azure portal, open the PowerShell session within the Cloud Shell pane.

  2. Delete all resource groups you created throughout the labs of this module by running the following command:

    
Remove-AzResourceGroup -Name 'Contoso-RG-TM1' -Force -AsJob

    Note: The command executes asynchronously (as determined by the -AsJob parameter), so while you will be able to run another PowerShell command immediately afterwards within the same PowerShell session, it will take a few minutes before the resource groups are actually removed.