Alert PrometheusMissingRuleEvaluations is firing intermittently only for "kube-apiserver.rules" group which is defined in "kube-apiserver-slos-extended" PrometheusRule (in openshift-kube-apiserver project).
The alert gets resolved within 15 minutes of firing.

Below warning is streamed repetitively every time before the alert fires:
~~~
2024-02-09T13:34:48.214853072Z ts=2024-02-09T13:34:48.214Z caller=klog.go:108 level=warn component=k8s_client_runtime func=Warningf msg="github.com/prometheus/prometheus/discovery/kubernetes/kubernetes.go:543: watch of *v1.Pod ended with: very short watch: github.com/prometheus/prometheus/discovery/kubernetes/kubernetes.go:543: Unexpected watch close - watch lasted less than a second and no items received"
~~~

RHOCP 4.12.45

NA

    1. Not sure how to reproduce it
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The alert PrometheusMissingRuleEvaluations intermittently for "kube-apiserver.rules" alert group.

The alert should not fire at all.

There are 304 prometheusrules defined in the cluster.
There are no resource limits defined on prometheus pods. CPU utilization is around 3vCPU for 1 pod and 2vCPU for other pod.
Interestingly, the doesn't stream for any other prometheusrule.