Client’s GKE Cluster Ate Their Entire VPC: The Class E Rescue (Part 2)
The “Impossible” Fix: Class E Migration In Part 1, we diagnosed the crime scene: A production GKE cluster flatlined because its /20 subnet (4,096 IPs) hit a hard ceiling at exactly 16 nodes. The “Official” consultant solution? Rebuild the VPC with a /16. The “Actual” engineering solution? Class E Address Space. If you are reading…