Conflict between prometheos and metrics-server

I wanted to monitor my cluster and pods and I decided to install the prometheos addon of the microk8s. I was able to see some of the metrics of the node but then I noticed that my auto scalers (hpa) not working and when I got kubectl get hpa I received <unknown>/75%.

After some inspections and trial and error I found out the problem is promethous and after disabling it and later disabling and enabling metrics-server the auto-scalers started to work properly again. My question is, is there a conflict between microk8s addons? Because I have installed both promethous and metrics-server via microk8s.enable OR the problem is promethous and its components have a real conflict with metrics-server? My next question is how can I solve this?

[avarf]

Hi again, Just wanted to let you know that I installed prometheos via its helm chart and everything is good and working. I followed this link: https://medium.com/@at_ishikawa/install-prometheus-and-grafana-by-helm-9784c73a3e97 and the only change that I made was creating my own prometheus-values.yaml:

alertmanager:
  persistentVolume:
    enabled: false

server:
  persistentVolume:
    enabled: false

And I installed it with this command:

helm install --name prometheus stable/prometheus -f prometheus-values.yaml

I didn’t check your manifests but I noticed two changes:

• Microk8s addon installs prometheus in a separate namespace (I don’t think this is important)
• If I remember correctly Microk8s prometheus addon installs its own metrics-server but prometheus helm dosn’t install a metrics-server and it uses kube-state-metrics:

prometheus-alertmanager-65f49796f5-gfs5d
prometheus-kube-state-metrics-64f766f4cd-m7754
prometheus-node-exporter-2dtb5
prometheus-pushgateway-7bfc59b475-pq6wr
prometheus-server-6f6975d889-5vpcn

I hope these can help.

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