Our Kube-Prometheus-stack have most of the default PrometheusRules enabled. The definition of these default PrometheusRules are defined in: https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-prometheus-stack/templates/prometheus/rules-1.14d
These alerts have the attribute runbook_url which, most of the time, lands on a 404 Page Not Found. Some random examples:
But sometime the URL lands on a valid page:
Could this be because of the entry section https://runbooks.prometheus-operator.dev/runbooks/kubernetes/ is being reworked?