As of this morning at 04:27 am we have a spike of 60% CPU on both GCP nodes in GKE cluster together , with Zero usage of the system. No user is logged in. We are protected by WAF and a firewall with no DDos activity. It seems like an internal GKE stuff. we do not see any process consuming High CPU.
The application is a Dot net app which had never in many years of operation shown such behaviour.
Now at 10:05 am the surge is still on.
our application is behaving very sluggishly.
I would appreciate any contribution to understand the phenomenon.
Kind regards,
Avi
I reviewed 4 windows pods CPU consumption it was Zero. Network was also idle.