Azure logic apps vnet integration not working

Question

Azure logic apps vnet integration not working

Vasileios Matiakis 0

I have created the logic app and on the "diagnose networking" i can verify connectivity on a server that lives on another VNet which i verify the connection with tcpdump with source the outgoing subnet. When i create a trigger and an action i get a BadGateway error, no incoming connections on the server and the browser i can see a failed connection. Any assistance?

navba-MSFT 27,550 Reputation points Microsoft Employee Moderator

2023-07-18T05:12:07.5533333+00:00
@Vasileios Matiakis Welcome to Microsoft Q&A Forum, Thank you for posting your query here!

I understand that you have an Azure LogicApp with VNET integration, and getting a BadGateway error, and no incoming connections on the server.

It seems that the issue might be related to the VNet integration configuration of the logic app. To resolve this issue, we can follow the below steps:

Please check this LogicApp diagnosing article for the bad gateway errors.

Check the VNet integration configuration of the logic app: We can verify that the VNet integration configuration of the logic app is correct. We can check if the VNet integration is enabled and if the correct VNet and subnet are selected. We can also check if the integration service environment (ISE) is configured correctly if the logic app is using it. Refer this article.

3.Check the firewall configuration of the server: We can verify that the firewall configuration of the server is correct. We can check if the inbound rules are configured to allow traffic from the VNet subnet where the logic app is running.

4.Check the network security group (NSG) configuration of the subnet: We can verify that the NSG configuration of the subnet where the logic app is running is correct. We can check if the inbound rules are configured to allow traffic from the VNet where the server is running.

5.Check the trigger and action configuration of the logic app: We can verify that the trigger and action configuration of the logic app is correct. We can check if the correct endpoint is used, and if the authentication and authorization settings are correct.

6.Check the logs and diagnostics of the logic app: We can check the logs and diagnostics of the logic app to identify any errors or issues. We can use the Azure portal or Azure Monitor to view the logs and diagnostics.

If the above steps do not resolve the issue, we can try recreating the logic app or the VNet integration configuration.
navba-MSFT 27,550 Reputation points Microsoft Employee Moderator

2023-07-26T03:37:02.9766667+00:00

@Vasileios Matiakis Just following up to check if the above suggestions helped. If you have any questions do let me know. I would be happy to help.
Vasileios Matiakis 0 Reputation points

2023-07-27T07:12:46.7366667+00:00

Basically i checked everything but still couldn't manage to make it work as expected. I still get the bad gateway error.
navba-MSFT 27,550 Reputation points Microsoft Employee Moderator

2023-07-27T07:17:51.3666667+00:00

@Vasileios Matiakis Thanks for getting back. Could you please provide the detailed error message and the portal error screenshot ? Awaiting your reply.

Your answer

navba-MSFT 27,550 Reputation points Microsoft Employee Moderator

2023-07-26T03:37:02.9766667+00:00

@Vasileios Matiakis Just following up to check if the above suggestions helped. If you have any questions do let me know. I would be happy to help.
Vasileios Matiakis 0 Reputation points

2023-07-27T07:12:46.7366667+00:00

Basically i checked everything but still couldn't manage to make it work as expected. I still get the bad gateway error.
navba-MSFT 27,550 Reputation points Microsoft Employee Moderator

2023-07-27T07:17:51.3666667+00:00

@Vasileios Matiakis Thanks for getting back. Could you please provide the detailed error message and the portal error screenshot ? Awaiting your reply.

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Azure logic apps vnet integration not working

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