Introduction to Linkerd

Linkerd is a service mesh for Kubernetes. It makes running services easier and safer by giving you runtime debugging, observability, reliability, and security—all without requiring any changes to your code.

Linkerd works by installing a set of ultralight, transparent proxies next to each service instance. These proxies automatically handle all traffic to and from the service. Because they're transparent, these proxies act as highly instrumented out-of-process network stacks, sending telemetry to, and receiving control signals from, the control plane. This design allows Linkerd to measure and manipulate traffic to and from your service without introducing excessive latency.

In order to be as small, lightweight, and safe as possible, Linkerd's proxies are written in Rust and specialized for Linkerd.

🕰 Timeline

00:00 - Holding screen
01:25 - Introductions
03:10 - What is a service mesh?
06:50 - What are we working with?
07:30 - Installing Linkerd
12:50 - Linkerd dashboard
15:40 - Linkerd top
18:10 - Deploying the demo app
20:40 - Injecting the Linkerd sidecar
24:15 - Stat command
28:20 - Tap command
31:30 - Fault injection / TrafficSplit / Canary Deploys
40:50 - Time outs and retries
49:20 - mTLS
55:30 - Multi-cluster
1:09:00 - Closing

🌎 Resources

Linkerd - https://linkerd.io
Thomas Rampelberg - https://twitter.com/grampelberg

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