docs(day-2): Chaos Engineering talk notes

content/day-2/07-chaosengineering.md

@@ -0,0 +1,50 @@
+---
+title: "How Chaos-Engineering works: Implementing Failure Injection on Kubernetes with Rust"
+weight: 7
+tags:
+ - rejekts
+ - chaos
+ - rust
+ - operator
+---
+
+<!-- {{% button href="https://youtu.be/rkteV6Mzjfs" style="warning" icon="video" %}}Watch talk on YouTube{{% /button %}} -->
+<!-- {{% button href="https://docs.google.com/presentation/d/1nEK0CVC_yQgIDqwsdh-PRihB6dc9RyT-" style="tip" icon="person-chalkboard" %}}Slides{{% /button %}} -->
+{{% button href="https://github.com/ioboi/kerris" style="info" icon="code" %}}Code/Demo{{% /button %}}
+
+A general introduction to chaos engineering with specificly showing implementations by Chaos Mesh and Litmus.
+After that the talk continues into the implementation of a custom chaos operator, written in rust.
+
+## Chaos Engineering
+
+> Chaos Engineering is the discipline of experimenting on a system in order to build confidence in the systems capability to withstand turbulent conditions in production
+> ~ Chaos Community (2015)
+
+- CNCF-Projects: **Chaos Mesh**, **Litmus**, Chaos Blade, Krkn
+- Types: **Pod Chaos** (Delete/Terminate), **Pod Network Chaos** (Faults/Packet loss), Node Chaos, JVM Chaos, Infra Chaos(Reboot vms), ...
+
+## APIs
+
+- Chaos Mesh: A Specific CRD per Chaos Type (PodChaos, NetworkChaos, ...)
+- Litmus: Chaos Engine Config that defines the type in it's spec
+
+TODO: Steal sample CRDs
+
+## DIY
+
+- Baseline: Written as a controller in Rust (out of curiosity) with support for Pod Chaos and Network Chaos
+- Entrypoint is a reconcile function that returns an action (requeue, etc) and an error
+- Network Chaos uses traffic controll (`tc` part of `iproute2`) to do the limiting and loss
+- If you're interesten in the rust implementation: Look at the code linked above
+
+```mermaid
+graph LRT
+    controller
+    subgraph node
+        daemon
+        containerd
+
+        daemon-->|grpc|containerd
+    end
+    controller-->daemon
+```

content/day-2/_index.md

@@ -17,6 +17,7 @@ I have to admit that I'm very bad with names and don't always regocnize people b
 ## Talk recommendations
 
 - If you're building operators: [Solving Operator Extensibility: A gRPC Plugin Framework for kubernetes](./04_operator-estensibility)
+- [Intro to both chaos engineering and building operators that interact with containerd in rust](./07-chaosengineering)
 - The idea behind [The self-improving platform: Closing the Loop Between Telemetry and Tuning](./05_selvimproving) is very interesting but the first half of the talk is kinda confusing as it discusses a study that could have been shortened drasticly. But the way they automaticly create PRs for resource utilizations is cool
 
 ## Other stuff I learned or people i talk to