I have been running about 20 servers in Google Cloud Platform.
This month which is only 7days passed, I have charged $546.76 for the "Google Compute Network Internet Egress from APAC to China 2,471.65 GB" suddenly. And it still has been increasing.
At first, I have NOT provided like webserver or any service to china as publish, most likely VM Instances work as cron or crawler server.
And also I have checked network "Egress", which means output I think, every our servers in Google Cloud Platform, but I couldn't find any output like so huge traffic 2,471.65 GB. So this huge amount output traffic is very strange to me.
So I would like to know
1, What is this charged for traffic? Am I getting attack from china ?
2, How can I make sure which server to send many traffic to china ?
3, Do I have to pay for google full charge even if such an unexpected traffic fee ?
Thanks.