oc create namespace ns1
oc apply -f - <<EOF
apiVersion: monitoring.rhobs/v1alpha1
kind: MonitoringStack
metadata:
  labels:
    mso: example
  name: multi-ns
  namespace: ns1
spec:
  alertmanagerConfig:
    disabled: true
  logLevel: info
  namespaceSelector:
    matchLabels:
      kubernetes.io/metadata.name: ns1
  prometheusConfig:
    replicas: 2
  resourceSelector:
    matchLabels:
      app.kubernetes.io/name: prometheus-example-app
  resources: {}
  retention: 120h
EOF

% oc -n ns1 logs prometheus-multi-ns-0
time=2025-11-19T02:30:42.879Z level=INFO source=main.go:687 msg="Starting Prometheus Server" mode=server version="(version=, branch=, revision=unknown)"