Monitoring

by

Installer Helm

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

kubectl delete namespace monitoring
kubectl delete crd alertmanagerconfigs.monitoring.coreos.com
kubectl delete crd alertmanagers.monitoring.coreos.com
kubectl delete crd podmonitors.monitoring.coreos.com
kubectl delete crd probes.monitoring.coreos.com
kubectl delete crd prometheuses.monitoring.coreos.com
kubectl delete crd prometheusrules.monitoring.coreos.com
kubectl delete crd servicemonitors.monitoring.coreos.com
kubectl delete crd thanosrulers.monitoring.coreos.com

kubectl create namespace monitoring
helm install kube-prometheus-stack prometheus-community/kube-prometheus-stack -n monitoring --debug --set prometheusOperator.admissionWebhooks.enabled=false --set prometheusOperator.tls.enabled=false

Grafana

Recupere le user et mdp pour grafana

sudo kubectl get secret --namespace monitoring prometheus-grafana -o yaml

Ajouter un service loadbalancer pour acces via lan

apiVersion: v1
kind: Service
metadata:
  name: grafana-web-service
  namespace: monitoring  
spec:
  selector:
    app: kube-prometheus-stack-grafana
  ports:
    - name: web
      protocol: TCP
      port: 80
      targetPort: 80
  type: LoadBalancer

If you are using Prometheus Operator then user/pass is:

user: admin
pass: prom-operator

Erreur

J’ai eu l’erreur

Error: INSTALLATION FAILED: Kubernetes cluster unreachable: Get "http://localhost:8080/version?timeout=32s": dial tcp [::1]:8080: connect: connection refused

pour la coriger il faut que le user ai le parametre de kube dans son home , pour ce faire :

kubectl config view --raw > ~/.kube/config
chmod go-r ~/.kube/config

ce qui creera un fichier config tel que :

apiVersion: v1
clusters:
- cluster:
    certificate-authority-data: ---certif---
    server: https://---ip---:---port---
  name: microk8s-cluster
contexts:
- context:
    cluster: microk8s-cluster
    user: ---nomuser---
  name: microk8s
current-context: microk8s
kind: Config
preferences: {}
users:
- name: ---nomuser---
  user:
    token: ---token---

source :

https://stash.run/docs/v2021.6.18/guides/latest/monitoring/prometheus_operator/

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