Comments (2)
Did you install Prometheus Operator in the openshift-monitoring
or monitoring
namespace?
from kepler-doc.
Did you install Prometheus Operator in the openshift-monitoring or monitoring namespace?
Neither, but I were to do it, I wouldn't touch openshift-monitoring
ns
I did not install Prometheus Operator ( PO ) since I was pretty sure (based on previous experience) looking at the deployment yaml that PO in kube-prometheus
does not limit the resources it watches
see: https://github.com/prometheus-operator/kube-prometheus/blob/dc0ad5e2162110c31c0c08d097f688145ce8e229/manifests/prometheusOperator-deployment.yaml#L29
containers:
- args:
- --kubelet-service=kube-system/kubelet
- --prometheus-config-reloader=quay.io/prometheus-operator/prometheus-config-reloader:v0.65.2
image: quay.io/prometheus-operator/prometheus-operator:v0.65.2
Unlike the incluster Prometheus Operator that does https://github.com/openshift/cluster-monitoring-operator/blob/076da3ba2d27edb00765cff6a51b0b7a2785ce03/assets/prometheus-operator/deployment.yaml#LL34C8-L38C66
containers:
- args:
- --kubelet-service=kube-system/kubelet
- --prometheus-config-reloader=quay.io/prometheus-operator/prometheus-config-reloader:v0.65.1
- --prometheus-instance-namespaces=openshift-monitoring
- --thanos-ruler-instance-namespaces=openshift-monitoring
- --alertmanager-instance-namespaces=openshift-monitoring
This would lead to the PO reconciling all Prometheus instances including the incluster one which renders the in cluster monitoring Prometheus unstable as both operators start to update it.
I think it may be easier to use user-workload-monitoring on OpenShift - https://docs.openshift.com/container-platform/4.13/monitoring/configuring-the-monitoring-stack.html
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