自宅のラズパイk8sクラスターにPrometheus Stackを生やしていく

Helm Chart Repositoryを追加

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

$ helm repo update

Hang tight while we grab the latest from your chart repositories...
...Successfully got an update from the "prometheus-community" chart repository
Update Complete. ⎈Happy Helming!⎈

namespaceの作成

$ k create namespace monitoring

namespace/monitoring created

helm installの実行

$ helm install kube-prometheus-stack prometheus-community/kube-prometheus-stack

NAME: kube-prometheus-stack
LAST DEPLOYED: Mon Jun  3 21:26:28 2024
NAMESPACE: monitoring
STATUS: deployed
REVISION: 1
NOTES:
kube-prometheus-stack has been installed. Check its status by running:
  kubectl --namespace monitoring get pods -l "release=kube-prometheus-stack"

Visit https://github.com/prometheus-operator/kube-prometheus for instructions on how to create & configure Alertmanager and Prometheus instances using the Operator.

起動確認

Pod

$ k get po

NAME                                                        READY   STATUS    RESTARTS   AGE
alertmanager-kube-prometheus-stack-alertmanager-0           2/2     Running   0          49m
kube-prometheus-stack-grafana-67997d8bd4-wnh9f              3/3     Running   0          49m
kube-prometheus-stack-kube-state-metrics-657ddb7877-jcj26   1/1     Running   0          49m
kube-prometheus-stack-operator-5975686646-bhk6m             1/1     Running   0          49m
kube-prometheus-stack-prometheus-node-exporter-jc6qx        1/1     Running   0          49m
kube-prometheus-stack-prometheus-node-exporter-n5hwh        1/1     Running   0          49m
kube-prometheus-stack-prometheus-node-exporter-x6kz6        1/1     Running   0          49m
prometheus-kube-prometheus-stack-prometheus-0               2/2     Running   0          49m

Grafanaへアクセス

自動生成されたServiceを使ってport-forwardする

$ k port-forward service/kube-prometheus-stack-grafana 8080:80

Forwarding from 127.0.0.1:8080 -> 3000
Forwarding from [::1]:8080 -> 3000
Handling connection for 8080
Handling connection for 8080

http://localhost:8080/login へアクセスしてログイン画面が出ることを確認