[GitHub] [yunikorn-site] 0yukali0 commented on a diff in pull request #301: [YUNIKORN-1753] Adding a document of integrate prometheus and grafana

["0yukali0 (via GitHub)" <gi...@apache.org>]

0yukali0 commented on code in PR #301:
URL: https://github.com/apache/yunikorn-site/pull/301#discussion_r1201848538


##########
docs/user_guide/prometheus.md:
##########
@@ -79,4 +83,87 @@ You should be able to browse to a status page at [localhost:9090](http://localh
 
 ![prometheus-web-ui](../assets/prometheus-web-ui.png)
 
-You can also verify that Prometheus is serving metrics by navigating to its metrics endpoint:[localhost:9090/metrics](http://localhost:9090/metrics)
\ No newline at end of file
+You can also verify that Prometheus is serving metrics by navigating to its metrics endpoint:[localhost:9090/metrics](http://localhost:9090/metrics)
+
+## Deploy Prometheus and Grafana in a cluster.
+
+### 1. Add Prometheus repository to helm
+    
+```yaml
+# add helm repo
+helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
+helm repo update
+```
+    
+### 2. Configuring yunikorn for prometheus
+
+Get the config from repository.
+```yaml
+helm show values prometheus-community/kube-prometheus-stack > /tmp/values.yaml
+```
+
+Add a new job in Prometheus to collect metrics by scraping the metrics HTTP endpoints of the targets.
+
+```yaml
+vim /tmp/values.yaml
+```
+```yaml
+...
+additionalScrapeConfigs:
+  - job_name: "yunikorn"
+    scrape_interval: 1s
+    metrics_path: '/ws/v1/metrics'
+    static_configs:
+      - targets: ["yunikorn-service.yunikorn.svc.cluster.local:9080"]
+...
+```
+    
+### 3. Use helm to create Prometheus
+
+```yaml
+# create k8s namespace
+kubectl create namespace prometheus
+
+# deploy chart
+helm install prometheus prometheus-community/kube-prometheus-stack -n prometheus -f /tmp/values.yaml

Review Comment:
   Adding --create-namespace can create namespace automatically replaces the `kubectl create namespace prometheus`.
   ```
   helm install prometheus prometheus-community/kube-prometheus-stack -n prometheus --create-namespace  -f /tmp/values.yaml
   ```



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