Load balancer error 503 - failed_to_connect_to_backend

[pmadr]

Hello,

Today starting at approx. 5 AM UTC the load balancer in my project is returning error 503 failed_to_connect_to_backend 2-3 times in a minute. I did not changed anything. It was working fine for months without this error.

Please do you have any idea how to fix it?

Thank you,

Pavel

[pmadr]

Some details:

- the first error appeared at 2023-02-07 05:20:40.837 GMT (did Google some infrastructure update at that time?)

- each failing request lasts approx. 4.5 seconds

[pmadr]

The issue is not appearing again. It disappeared without my intervention. So it seems that GCE had some problems yesterday. GCE had some issue but there is no mention of the load balancer:
https://status-cloud-google-com.translate.goog/incidents/BYWwca1aSjp9JfohSyRQ?_x_tr_sl=auto&_x_tr_tl...