Hi Adrian, collectors added from the Services are Telegraf collectors and are disconnected from the tenant by removing the agent from the K8s in your particular case. Telegraf collector information and metrics will stay in Cloud Insights history for 90 days and then are aged out, so you will see their information for that duration of time. Does this help?
Sorry, I was 100% sure having responded to this...
Yes and no. Thanks for your answer. I now understand the background, but still not sure, if I want an inactive or in this case even non-existent system to be presented in Cloud Insights. I can remove other aquisition units as well so why not Kubernetes clusters?
I don't to argue or complain, but I would be interested, if something like this is planned for the future.