fix prom

deploy/prometheus/deploy.jsonnet

@@ -24,7 +24,6 @@ local kp = (import 'kube-prometheus/main.libsonnet') + {
             },
           },
         },
-        selfScrape: true,
       },
     },
   },
@@ -129,3 +128,44 @@ local kp = (import 'kube-prometheus/main.libsonnet') + {
 { ['prometheus-' + name]: kp.prometheus[name] for name in std.objectFields(kp.prometheus) } +
 { ['prometheus-adapter-' + name]: kp.prometheusAdapter[name] for name in std.objectFields(kp.prometheusAdapter) } +
 { [name + '-ingress']: kp.ingress[name] for name in std.objectFields(kp.ingress) }
+
+/*
+  Add a ServiceMonitor for Prometheus self-scrape.
+  The relabeling below forces the job label to be "prometheus", so that querying with:
+      up{job="prometheus"}
+  will return Prometheus's own metrics.
+
+  NOTE: Adjust the matchLabels selector if your Prometheus service has different labels.
+*/
+
+{ 'prometheus-self-monitor': {
+    apiVersion: 'monitoring.coreos.com/v1',
+    kind: 'ServiceMonitor',
+    metadata: {
+      name: 'prometheus-self-monitor',
+      namespace: kp.values.common.namespace,
+      labels: {
+        release: 'prometheus',
+      },
+    },
+    spec: {
+      selector: {
+        matchLabels: {
+          // This selector should match labels on the Prometheus service.
+          // Here we assume the Prometheus service is labeled with:
+          //    prometheus: "prometheus-k8s"
+          prometheus: 'prometheus-k8s',
+        },
+      },
+      endpoints: [{
+        port: 'web',      // Must match the name of the port exposed by the Prometheus service
+        path: '/metrics',
+        scheme: 'http',   // Change to "https" if your Prometheus endpoint requires it
+        relabelings: [{
+          targetLabel: 'job',
+          replacement: 'prometheus',
+        }],
+      }],
+    },
+  },
+}