pg-k8s-ns-quotas

Playground repo for demoing namespace quotas and limit range.

Kubernetes namespaces are like virtual clusters on your actual cluster. If used properly namespaces with resource quotas can really create a setup where multiple teams can co-exist on single cluster separated by namespaces. Without properly applying quotas cluster administration could be a bit of a nightmare when apps from one team's namespace are chewing up resources from the entire cluster there by draining resources from other namespace.

In this example we build a Spring boot application (because JVMs ;p) which we will deploy in a namespace with quotas and a namespace without quotas to see what happens when an application goes rogue. We will also deploy grafana and prometheus to track cpu, memory usage via dashboards.

Deploy application

Create namespace with quotas

make create-ns

Deploy sample jvm

make deploy-sample-jvm-app NS=quotas

Deploy sample prometheus:

make deploy-prom

Deploy grafana

make deploy-grafna

TODO:

• Add description on quotas and limit range to the readme
• Add grafana dashboards
• Make the JVM app go rouge (should not be difficult :p)
• Deploy elastic to show logs