GCP incorrectly blocks some of public IPs suddently today

Google Cloud Serverless Applications
1

We have some web/API services on GCP/GKE/GCE for a few years. Today, we found some of public IPs are blocked suddenly without any notice, like 157.185.148.28, 157.185.145.180 … Does any one know why?

2

Are these VM or GKE node IPs? Or are these load balancer IPs?

3

Thanks!

Some of those blocked “157.185.148.28, 157.185.145.180 …” are our API/WEB users in China. Those users used to connect our GKE service through the Load balancer directly without any issue until today.

For example:

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4

I’ll check, but don’t think we did anything. I wonder if your endpoints are now blocked by the Great Firewall in China.

5

That’s odd. Their connection are OK with our GKE microservice for years already …

THANKS!

6

Actually, those blocked “157.185.148.28, 157.185.145.180 …”, which having the usual lower network traffic, are in U.S.A (Not in China at all) . Also, they are all unblocked now. This kind of unexpected GCP/GKE outage already impacts our business . Hope it’s not some incorrect AI firewall rejection …

7

Hi garisingh, Do you find any hint why GCP/GKE blocks our users suddenly for ~4 hrs yesterday? We have to give an explain to our customers also. Thanks!