Episode 16: How Istio configures Envoy proxies

Join us on January 20th for the first Istio weekly episode in 2022. Eitan Suez will explore how Istio configures Envoy proxies. Have you ever wondered what happens when you deploy a VirtualService or a DestinationRule? We know Istio translates the high-level configuration to the low-level Envoy configuration, but do we really understand how the different concepts map to each other? Eitan will show us how to use Istio CLI, proxy-status, and proxy-config commands to inspect the parts of Envoy configuration. Join us! #istioweekly #envoy #istio ▬▬▬▬▬▬ Episode links/notes ▬▬▬▬▬▬ 00:48 Happy 2022 - welcome! 02:07 Upcoming events (ZTA and DevSecOps for Cloud-Native apps event, Wasm workshop, Istio 0 to 60) 04:54 How Istio configures Envoy introduction 05:57 Motivation for the talk 07:32 What are we going to do? 08:20 Canonical traffic routing example 10:09 Installing Istio using the minimal profile 12:28 Deploying the applications 15:15 Deploying the DestinationRule and VirtualService 18:10 What do we have at this point? 21:48 Understanding Envoy terms (listeners, routes, clusters, endpoints) 23:33 Request flow through Envoy 27:14 Istio CLI proxy status command 30:26 RegistryZ debug endpoint 31:31 Istio CLI proxy config command (clusters, endpoints) 37:31 How deploying a DestinationRule impacts clusters 40:42 How deploying a VirtualService impacts routes 46:10 Looking at istiod logs 48:18 Weighted clusters in Envoy 52:02 Istio CLI describe command 53:18 Closing thoughts ▬▬▬▬▬▬ Upcoming events ▬▬▬▬▬▬ ZTA and DevSecOps for Cloud-Native Applications: https://tetr8.io/nist-2022 Istio Wasm Extensions Workshop: https://tetr8.io/wasm-workshop Istio 0 to 60 workshop (PST): https://tetr8.io/istio-0-60-pst Istio 0 to 60 workshop (IST): https://tetr8.io/istio-0-60-ist ▬▬▬▬▬▬ Connect ▬▬▬▬▬▬ Join Tetrate Community on Slack: https://tetr8.io/tetrate-community Follow us on Twitter:   / tetrateio   Follow us on LinkedIn:   / tetrate   Past episodes: http://tetr8.io/istioweekly ▬▬▬▬▬▬ Participate ▬▬▬▬▬▬ Suggest an episode: https://tetr8.io/tetrate-community Have a question about this episode? Comment below or in Tetrate Community Slack