Saturday, October 19, 2024

10 years of Kubernetes: Navigating the journey to mastering persistent storage

Kubernetes is now celebrating its 10th anniversary! As we approach mid-2024, we reflect on the journey of this market-leading container orchestration platform. Jan Safranek, a principal software engineer at Red Hat, has been there since the early days when Docker and Kubernetes emerged, challenging businesses and developers to adapt to this new technology.

Safranek played a crucial role in the development of Pet Sets, StatefulSets, CSI drivers, and Operators for Kubernetes. These innovations helped address the challenges of persistent storage and application management within the Kubernetes environment.

Looking back on the last decade of Kubernetes, Safranek highlights the significant shift in the market from heavy virtual machines to lightweight containerized applications. As Kubernetes gained traction, businesses started relying on this platform for critical infrastructure operations.

The evolution of Kubernetes brought new opportunities and challenges for data and storage management. Safranek recalls the initial struggles of running stateful applications on Kubernetes and the need for reliable volume plugins to integrate with various storage systems. Over time, Kubernetes introduced CSI as the main storage interface, offering compatibility with a wide range of drivers to meet the diverse needs of users.

Operators emerged as a key feature in Kubernetes, allowing businesses to streamline the deployment and management of stateful workloads. Despite some challenges, Operators have significantly improved the efficiency of running persistent data applications in Kubernetes.

As Kubernetes continues to support cloud-native approaches, the focus shifts towards simplifying the deployment of complex applications while ensuring stability and performance. Safranek emphasizes the importance of learning from past experiences and collaborating with experts in the field to drive innovation in Kubernetes.

Looking ahead, Safranek acknowledges the ongoing challenges in managing data and storage in Kubernetes, particularly concerning the ephemeral nature of containers. While Kubernetes offers solutions like PodDisruptionBudget to minimize disruptions, there is still a learning curve in handling stateful applications effectively.

Reflecting on his journey with Kubernetes, Safranek values the opportunity to collaborate with talented individuals and continue growing in his career. As Kubernetes celebrates its 10th anniversary, he looks forward to the future advancements in AI workloads and the evolving landscape of container orchestration technologies.