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OBSDOCS-1161: add steps to verify cluster observability operator sample service #78210

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OBSDOCS-1161: add steps to verify cluster observability operator sample service #78210

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18 changes: 18 additions & 0 deletions ...s/monitoring-deploying-a-sample-service-for-cluster-observability-operator.adoc
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Expand Up @@ -86,3 +86,21 @@ $ oc -n ns1-coo get pod
NAME READY STATUS RESTARTS AGE
prometheus-coo-example-app-0927545cb7-anskj 1/1 Running 0 81m
----

.Verification

To verify that the sample service has created a target and is returning metrics, follow these steps:

. Run the following command to verify that the `ServiceMonitor` object has created a target:
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Run the following command to verify that the promtheus object has discovered the target by ServiceMonitor


[source, terminal]
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@lihongyan1 lihongyan1 Jul 1, 2024 •
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To see the targets and query the metrics, you need create servicemonitor like

apiVersion: monitoring.rhobs/v1
kind: ServiceMonitor
metadata:
  labels:
    k8s-app: prometheus-coo-example-monitor
  name: prometheus-coo-example-monitor
spec:
  endpoints:
  - interval: 30s
    port: web
    scheme: http
  selector:
    matchLabels:
      app: prometheus-coo-example-app

----
$ oc -n ns1-coo exec -c prometheus prometheus-example-coo-monitoring-stack-0 -- curl -s 'http://localhost:9090/api/v1/targets' | jq '.data.activeTargets[].discoveredLabels | select(.__meta_kubernetes_endpoints_label_app=="prometheus-coo-example-app")'
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Missing steps to create monitoringstack also

----

. Run the following command to verify that the service returns metrics when you query it:

[source, terminal]
----
$ oc -n ns1-coo exec -c prometheus prometheus-example-coo-monitoring-stack-0 -- curl -s 'http://localhost:9090/api/v1/query?query=http_requests_total' | jq
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I found example app only expose the following metrics

          "__name__": "version",
          "__name__": "up",
          "__name__": "scrape_duration_seconds",
          "__name__": "scrape_samples_scraped",
          "__name__": "scrape_samples_post_metric_relabeling",
          "__name__": "scrape_series_added",

----