Add working ServiceMonitor config to release uploads (#199)

Makefile

@@ -91,6 +91,7 @@ release: manifests kustomize ## Build CRD and Operator manifests with kustomize.
 	mkdir -p release/
 	$(KUSTOMIZE) build config/crd > release/crd.yaml
 	$(KUSTOMIZE) build config/default > release/manager.yaml
+	$(KUSTOMIZE) build config/prometheus > release/monitor.yaml
 
 # If you wish to build the manager image targeting other platforms you can use the --platform flag.
 # (i.e. docker build --platform linux/arm64). However, you must enable docker buildKit for it.

config/prometheus/kustomization.yaml

@@ -1,2 +1,4 @@
+namespace: chia-operator-system
+namePrefix: chia-operator-
 resources:
 - monitor.yaml

config/prometheus/monitor.yaml

@@ -1,26 +1,16 @@
-
-# Prometheus Monitor Service (Metrics)
 apiVersion: monitoring.coreos.com/v1
 kind: ServiceMonitor
 metadata:
-  labels:
-    control-plane: controller-manager
-    app.kubernetes.io/name: servicemonitor
-    app.kubernetes.io/instance: controller-manager-metrics-monitor
-    app.kubernetes.io/component: metrics
-    app.kubernetes.io/created-by: chia-operator
-    app.kubernetes.io/part-of: chia-operator
-    app.kubernetes.io/managed-by: kustomize
-  name: controller-manager-metrics-monitor
+  name: manager-metrics
   namespace: system
 spec:
   endpoints:
-    - path: /metrics
-      port: https
-      scheme: https
-      bearerTokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token
-      tlsConfig:
-        insecureSkipVerify: true
+    - interval: 30s
+      path: /metrics
+      port: metrics
+  namespaceSelector:
+    matchNames:
+      - chia-operator-system
   selector:
     matchLabels:
       control-plane: controller-manager

docs/install.md

@@ -18,6 +18,16 @@ Install the latest controller manager:
 kubectl apply -f https://github.com/Chia-Network/chia-operator/releases/latest/download/manager.yaml
 ```
 
+### Prometheus metrics (Optional)
+
+If you have the Prometheus Operator installed in your cluster and would like to use the bundled ServiceMonitor to scrape chia-operator metrics:
+
+```bash
+kubectl apply -f https://github.com/Chia-Network/chia-operator/releases/latest/download/monitor.yaml
+```
+
+This ServiceMonitor is installed in the same namespace as chia-operator, so it will only work in Prometheus Operator configurations that can load ServiceMonitors from any namespace, and also don't have any ServiceMonitorSelectors set.
+
 ## Using kustomize
 
 Clone this repository (and change to its directory):