docs(etcd): clarify etcd metrics scraping with listen-metrics-urls (#13059)

docs/operations/etcd.md

@@ -32,12 +32,12 @@ etcd_metrics_service_labels:
   k8s-app: etcd
   app.kubernetes.io/managed-by: Kubespray
   app: kube-prometheus-stack-kube-etcd
-  release: prometheus-stack
+  release: kube-prometheus-stack
 ```
 
 The last two labels in the above example allows to scrape the metrics from the
 [kube-prometheus-stack](https://github.com/prometheus-community/helm-charts/tree/main/charts/kube-prometheus-stack)
-chart with the following Helm `values.yaml` :
+chart when it is installed with the release name `kube-prometheus-stack` and the following Helm `values.yaml`:
 
 ```yaml
 kubeEtcd:
@@ -45,8 +45,22 @@ kubeEtcd:
     enabled: false
 ```
 
-To fully override metrics exposition urls, define it in the inventory with:
+If your Helm release name is different, adjust the `release` label accordingly.
+
+To fully override metrics exposition URLs, define it in the inventory with:
 
 ```yaml
 etcd_listen_metrics_urls: "http://0.0.0.0:2381"
 ```
+
+If you choose to expose metrics on specific node IPs (for example `10.141.4.22`, `10.141.4.23`, `10.141.4.24`) in `etcd_listen_metrics_urls`,
+you can configure kube-prometheus-stack to scrape those endpoints directly with:
+
+```yaml
+kubeEtcd:
+  enabled: true
+  endpoints:
+    - 10.141.4.22
+    - 10.141.4.23
+    - 10.141.4.24
+```