Thanks! Unfortunately I have to use the v1 for this set-up. If it's not, the certificate is considered invalid, and that will create a Check the backend server's health and whether the services are running. By clicking Sign up for GitHub, you agree to our terms of service and If it is, check the DNS server about why it can't resolve to the IP address of the specified FQDN. Azure Application Gateway Backend Certificate not whitelisted Error Message: The server certificate used by the backend is not signed by a well-known Certificate Authority (CA). Already on GitHub? My issue was due to the root certificate not being presented to appgw, and resulted in the error: "The root certificate of the server certificate used by the backend does not match the trusted root certificate added to the application gateway. To Answer we need to understand what happens in any SSL/TLS negotiation. Check the document page that's provided in step 3a to learn more about how to create NSG rules. If you're using Azure default DNS, check with your domain name registrar about whether proper A record or CNAME record mapping has been completed. @einarasm read thru the responses from @krish-gh, specifically around leveraging OpenSSL toolkit to query the backend pool for the certificate trust chain, example: %> openssl s_client -connect 10.0.0.4:443 -servername www.example.com -showcerts. When calculating CR, what is the damage per turn for a monster with multiple attacks? Access forbidden. Check whether your UDR has a default route (0.0.0.0/0) with the next hop not set as Internet: a. This usually happens when the FQDN of the backend has not been entered correctly.. Azure Application Gateway: 502 error due to backend certificate not Failed health probe in Azure Application Gateway : r/AZURE - Reddit This month for new environment build we started encountering this problem. Can you please add reference to relevant Microsoft Docs page you are following? Access the backend server locally or from a client machine on the probe path, and check the response body. Nice article mate! Required fields are marked *. @TravisCragg-MSFT: Any luck? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
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