Unable to access GCP service after gke upgrade

Question

Automatic upgrade in mid-May.

1.14.10-gke.27 → 1.14.10-gke.36

https://cloud.google.com/kubernetes-engine/docs/release-notes?_ga=2.196679278.-315187236.1572486593#may_13_2020

After that, I got Memorystore（Redis）connection error and crul6 error.

crul error

cURL error 6: Could not resolve host: www.googleapis.com (see https://curl.haxx.se/libcurl/c/libcurl-errors.html)

This problem happens occasionally, not always. It worked fine before the upgrade.

• Role-based access control not use
• Workload Identity not use

Please advise.

Answer 1

Close it once. Probably not a gke version issue.

The reason is that the node was a preemptible node. That is likely.

When I ran the reboot test of the Pretentive Node, I was able to reproduce the error.

gcloud compute instances simulate-maintenance-event <instance name> --zone <zone>