[EPIC] Kubernetes monitoring expansion stage 2

[richardtief]

Context

Umbrella issue for tracking efforts on Kubernetes monitoring plugin expansion stage 2.

The Greenhouse catalog offers a plugin that install Kubernetes monitoring tools and the kubernetes-operations bundle. They are combined with documentation and scripts to provide easy-to-use end-to-end Kubernetes cluster monitoring with Prometheus using the Prometheus Operator.

Tickets

• [kube-monitoring] Ensuring prometheus-operator uniqueness per cluster #140
• [kube-monitoring] Only Prometheus deployment function #142
• Documentation, lots of documentation