GCP managed Promethues

[y4h2]

参考： Measure your golden signals with GKE Managed Prometheus and the nginx-ingress

部署测试组件

helm upgrade --install ingress-nginx ingress-nginx \
  --repo https://[kubernetes.github.io/ingress-nginx](http://kubernetes.github.io/ingress-nginx) \
  --namespace ingress-nginx --create-namespace \
  --set controller.metrics.enabled=true

部署PodMonitoring

apiVersion: monitoring.googleapis.com/v1
kind: PodMonitoring
metadata:
  name: ingress-nginx-metrics-monitoring
  namespace: ingress-nginx
spec:
  endpoints:
  - interval: 5s
    port: 10254
  selector:
    matchLabels:
      app.kubernetes.io/name): ingress-nginx

然后在GCP monitoring page上能看到对应的metrics

[y4h2]

用GCP官方example测试

• create a normal namespace test with default values.
• kubectl apply GCP's example application in the namespace test. (https://raw.githubusercontent.com/GoogleCloudPlatform/prometheus-engine/v0.4.3-gke.0/examples/example-app.yaml)
• apply GCP PodMonitoring within the namespace test

  apiVersion: monitoring.googleapis.com/v1
  kind: PodMonitoring
  metadata:
  name: prom-example
  spec:
  selector:
  matchLabels:
    app: prom-example
  endpoints:
  - port: metrics
  interval: 30s

• then I am able to see the metrics in GCP Monitoring's metrics explorer.

[y4h2]

GCP managed promethues doesn't work with istio. Once you enabled promethues managed promethues, it will create two namespace gmp-public and gmp-system. Those namespaces are not injected by istio.