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Status Future consideration
Workspace Instana
Categories Kubernetes Sensor
Created by Guest
Created on Jun 9, 2023

Openshift kubelet monitoring using Prometheus

I'm looking for a way to monitor the Openshift Prometheus metrics, more specifically the metrics that are exposed by kubelet. kubelet exposes a metric called 'kubelet_volume_stats_available_bytes', but i can't find it in the list of metrics that the Prometheus sensor discovers.
The Prometheus sensor on Openshift has been configured as:
poll_rate: 15 # Default is 1 second
- url: '/metrics' # metrics endpoint, the IP and port are auto-discovered
metricNameIncludeRegex: '.*volume.*'

This results in 20 different /metrics targets (exposed by the applications that are installed on Openshift), but none of them shows the metric 'kubelet_volume_stats_available_bytes'.
The reason might be that the default Prometheus targets are secured with the Openshift bearer token, while the Prometheus sensor only accepts a username/password authentication.

Therefore i would like to have the option for the Prometheus sensor to specify a bearer token or TLS certificate so it can authenticate with kubelet.

Idea priority Low