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Configure Failover Load Balancing

Updated: May 29, 2014

Windows Azure Traffic Manager

Often an organization wants to provide reliability for its services. It does this by providing backup services in case their primary service goes down. A common pattern for service failover is to provide a set of identical services and send traffic to a primary service, while maintaining a configured list of one or more backup services. You can configure this type of backup with Azure cloud services and web sites by following the procedures below.

Note that Azure Web Sites already provides failover load balancing functionality for web sites within a datacenter (also known as a region), regardless of the web site mode. Traffic Manager allows you to specify failover load balancing for web sites in different datacenters.

  1. In the Management Portal, in the left pane, click the Traffic Manager icon to open the Traffic Manager pane. If you have not yet created your Traffic Manager profile, see Create a Traffic Manager Profile Using Quick Create for steps to create a basic Traffic Manager profile.

  2. On the Traffic Manager pane in the Management Portal, locate the Traffic Manager profile that contains the settings that you want to modify, and then click the arrow to the right of the profile name. This will open the settings page for the profile.

  3. On your profile page, click Endpoints at the top of the page and verify that the both cloud services and web sites (endpoints) that you want to include in your configuration are present. For steps to add or remove endpoints, see Add or Delete Endpoints.

  4. On your profile page, click Configure at the top to open the configuration page.

  5. For Load Balancing Method Settings, verify that the load balancing method is Failover. If it is not, click Failover from the dropdown list.

  6. For Failover Priority List, adjust the failover order for your endpoints. When you select the Failover load balancing method, the order of the selected endpoints matters. The primary endpoint is on top. Use the up and down arrows to change the order as needed. For information about how to set the failover priority by using Windows PowerShell, see Set-AzureTrafficManagerProfile.

  7. Verify that the Monitoring Settings are configured appropriately. Monitoring ensures that endpoints that are offline are not sent traffic. In order to monitor endpoints, you must specify a path and filename. Note that a forward slash “/“ is a valid entry for the relative path and implies that the file is in the root directory (default). For more information about monitoring, see About Traffic Manager Monitoring.

  8. After you complete your configuration changes, click Save at the bottom of the page.

  9. Test the changes in your configuration. See Testing Traffic Manager Settings for more information.

  10. Once your Traffic Manager profile is setup and working, edit the DNS record on your authoritative DNS server to point your company domain name to the Traffic Manager domain name. For more information about how to do this, see Point a Company Internet Domain to a Traffic Manager Domain.

See Also

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