A project aims to scale Kubernetes to 1 million active nodes, addressing the technical challenges and limitations of scalability, particularly focusing on etcd performance, kube-apiserver optimization, and networking complexities. The initiative seeks to provide data-driven insights into Kubernetes' scalability and inspire further developments within the community, although it is not intended for production use.

Google Kubernetes Engine (GKE) clusters now support multi-subnet functionality, allowing for increased scalability and optimized resource utilization by adding additional subnets to existing clusters. This enhancement helps prevent IP exhaustion by enabling new node pools to utilize new subnets, thus facilitating easier cluster growth without the need for recreation.