Testing sending traffic through the cluster

[sekka1]

Cluster updates, overlay updates, service mesh updates, API gateway updates, or network policy updates can all affect traffic going through the cluster. We can have endpoint checks like pingdom like checks to see if the endpoints are up or we can test it in a more controlled way with the tools below:

These are two interesting projects that can help with testing traffic through the cluster.

https://github.com/BuoyantIO/bb

https://github.com/BuoyantIO/slow_cooker

With the bb tool, we can setup a topology and have slow_cooker send traffic through it to make sure traffic is getting to all the destinations.

Making network policy updates are kinda hard to test. You have to make sure you have the test setup correct then send some traffic through to test. Using these two tools, we can simulate a test very quickly, easily, and repeatably.