Software Engineering Radio - the podcast for professional software developers SE Radio 649: Lukas Gentele on Kubernetes vClusters
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Jan 2, 2025 Lukas Gentele, CEO of Loft Labs and a Kubernetes expert, discusses the intriguing world of vClusters. He explains how these virtual clusters operate within a host Kubernetes environment, enhancing multi-tenancy and resource sharing. Lukas delves into scalability, deployment models, and the quick spin-up of environments that dramatically benefit organizations. The conversation also touches on efficient management strategies for handling multiple vClusters and the role of Kubernetes operators. Plus, he reveals the ease of setting up vClusters, making them accessible for developers.
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vCluster Definition
- A vCluster is a Kubernetes cluster running on a host cluster, sharing its nodes and resources.
- It offers isolated spaces for multi-tenancy while using the underlying infrastructure.
vCluster Control Plane
- A vCluster's control plane resides in a container (a pod with several containers) containing core components like the API server.
- It differs from a regular cluster by lacking a scheduler, relying on the host cluster's scheduler.
Persistent Storage
- Ensure your Kubernetes cluster has persistent volume claim provisioning enabled for vCluster durability.
- Configure this via a vCluster YAML file or use dynamic provisioning if available.