Kubernetes Podcast from Google Linkerd, with William Morgan
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Jan 29, 2025 William Morgan, CEO of Buoyant and a former Twitter engineer, dives deep into the world of Linkerd, a service mesh designed for seamless Kubernetes networking. He explains Linkerd's unique architecture and its evolution to a Rust-written microproxy model. The conversation highlights the challenges engineers face with Kubernetes and the importance of data security in cloud environments. Morgan also sheds light on the complexities of open-source sustainability and the role of corporate support in keeping projects viable.
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Linkerd: A Simple Service Mesh
- Linkerd is an open-source service mesh providing application-layer networking features in Kubernetes.
- It aims for operational simplicity, allowing users to add capabilities without altering application code or configuration.
Linkerd's Design Philosophy
- Linkerd prioritizes simplicity, especially for users new to Kubernetes.
- Its design minimizes required knowledge and configuration, aiding debugging and understanding.
Linkerd's Proxy Evolution
- Linkerd initially used per-node proxies to amortize resource usage of heavyweight JVM-based proxies.
- This approach proved operationally challenging due to random blast radius and security concerns, leading to a shift to sidecar proxies.