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Google is blocking traffic from Load balancer to Cloud RUN

Posted on 01-12-2023 03:52 AM
Tonino
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Reply posted on --/--/---- --:-- AM

We have an infrastructure like the one below:

custom Domain -> Load Balancer (using IAP) -> NGINX on Cloud RUN -> Cloud RUN Backend 

Since last night, across all our google projects, when we use the GC Load Balancer (myapp.mydomain.com), the request between NGINX hosted in cloud Run A and the Cloud Run B is being blocked with the error page

Tonino_0-1673523407918.png

IF I access the NGINX cloud RUN using the raw Cloud Run URL (mycloudRun-xxxxxx-a.run.com) everything works normally. 

I saw that there was no release done last night on GCP and no ongoing incidents on GCP. So I am clueless of what is going on.

- A restart of the load balancer didn't solve the issue

- Making all Cloud RUN public and accessible from internet didn't solve the issue

- Disabling IAP, the requests from my custom domain work too but anonymously

Any help is appreciated

 

 

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Posted on --/--/---- --:-- AM
Tonino
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Reply posted on --/--/---- --:-- AM

there is an issue in the issue tracker now raised about it

https://issuetracker.google.com/issues/265184232

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