How to redirect to different host name based on URL path in Azure Application Gateway

Prashanth Ravichandar 1 Microsoft Employee

Hi,

We have an application gateway with app service. We have 2 custom domains. https://tip2.support.fabric.microsoft.com/ and https://tip2.blog.fabric.microsoft.com/. We have 2 paths /blog and /support. Currently we can access both of these paths from both the custom domains .E.g. https://tip2.blog.fabric.microsoft.com/blog, https://tip2.blog.fabric.microsoft.com/support, https://tip2.support.fabric.microsoft.com/supportand https://tip2.support.fabric.microsoft.com/blog. I want to author application gateway rules such that when user tries to access https://tip2.support.fabric.microsoft.com/blog, they should be navigated to https://tip2.blog.fabric.microsoft.com/blog. And when user tries to access https://tip2.blog.fabric.microsoft.com/support, they should be navigated to https://tip2.support.fabric.microsoft.com/support. I need some help on how to achieve this using Application gateway

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1 answer

Gordon Byers 7,165 Reputation points

2023-06-20T17:53:04.1633333+00:00

First, create multi-site listeners for the 2 domains.

Configure the backends are normal.

Then create a path based redirection rule redirecting to an External site, then provide the desired URL.
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Prashanth Ravichandar 1 Reputation point Microsoft Employee

2023-06-21T11:35:41.62+00:00

Hi AirGordan,

Thanks for your reply. There are few challenges.

We have locales in the path. - E.g https://tip2.support.fabric.microsoft.com/en-IN/blog. So the routing should handle all the locales

We already have 2 rewrite rules that are used redirect users from https://tip2.blog.fabric.microsoft.com to https://tip2.blog.fabric.microsoft.com/en-US/blog and https://tip2.support.fabric.microsoft.com to https://tip2.support.fabric.microsoft.com/en-US/support. In addition to this, we now want to redirect https://tip2.blog.fabric.microsoft.com/en-US/support to https://tip2.support.fabric.microsoft.com/en-US/support and https://tip2.support.fabric.microsoft.com/en-US/blog to https://tip2.blog.fabric.microsoft.com/en-US/blog. As you can see, this involves host name updates.

3.The listeners that we have are already mapped to this rule set. Now I will not be able to add listeners for same host names and the existing listeners can also not be mapped to more than one rewrite ruleset. This is where I need help in.

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