Skip to content

Latest commit

 

History

History
87 lines (68 loc) · 2.59 KB

README.md

File metadata and controls

87 lines (68 loc) · 2.59 KB
Raw

Prometheus

In the training, we will learn about Prometheus.

Navigate to the folder 28_prometheus from CLI, before you get started.

Create a pod

kubectl create -f pod.yaml

Prometheus

  • Add the prometheus-community helm repo

    helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
helm repo update

  • Search for a prometheus chart via helm

    helm search repo prometheus

  • Install prometheus

    helm install my-prometheus prometheus-community/prometheus -f prometheus-values.yaml

  • Take a look at the installed resources

    helm list
kubectl get all

  • Visit the prometheus UI in the browser

    Get the External IP of the service

    kubectl get svc my-prometheus-server

  • Execute some query over the "graph" page in your browser

    • http requests: container_memory_usage_bytes
    • API server requests count: container_memory_usage_bytes{pod="my-pod",container="nginx"}
    • per-second rate of increase, messured over the last 5 min: rate(container_memory_usage_bytes{pod="my-pod",container="nginx"}[5m])
    • predict memory usage in 24 hours based on the rate of the last 5 minutes: predict_linear((container_memory_usage_bytes{pod="my-pod",container="nginx"}[5m]),24*3600)
    • more examples: https://prometheus.io/docs/prometheus/latest/querying/examples

Grafana

  • Add the grafana helm repo

    helm repo add grafana https://grafana.github.io/helm-charts
helm repo update

  • Install grafana

    helm install my-grafana grafana/grafana -f grafana-values.yaml

  • Visit the grafana UI in the browser Get the External IP of the service

    kubectl get svc

  • Add Prometheus as data source to Grafana

    • Choose the Option Configuration/Data Sources
    • Choose type Prometheus
    • Insert URL http://my-prometheus-server and click Save & Test
    • Choose the Option Dashboards/Manage/Import
    • Paste the number 1860 into the field Grafana.com Dashboard and click Load (Visit https://grafana.com/grafana/dashboards for other Dashboards)
    • Choose the Datasource Prometheus in the field Prometheus and Import afterwards
    • Investigate the Dashboard; take care to a proper time range via the button on the right above

Clean up

  • Clean up the setup 
    helm delete my-grafana
helm delete my-prometheus
kubectl delete pod my-pod

Jump to Home | Previous Training