* namespace has to be kube-system
In order for this service to be discovered by ServiceMonitor k8s-apps-http, it should belong to namespace kube-system.
* namespace has to be kube-system
* namespace has to be kube-system
for service discovery to work within prometheus configuration (ServiceMonitor k8s-app) these service and endpoints should belong to kube-system namespace. Otherwise the service monitor won't fetch it.
* selector was incorrect
selector prometheus: prometheus-frontend is incorrect, the name of the Prometheus resource in the example is "frontend", not "prometheus-frontend"
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