k3s-cluster/cluster/apps/monitoring/kube-prometheus-stack/helm-release.yaml

apiVersion: helm.toolkit.fluxcd.io/v2beta1
kind: HelmRelease
metadata:
  name: kube-prometheus-stack
  namespace: monitoring
spec:
  interval: 5m
  chart:
    spec:
      chart: kube-prometheus-stack
      version: 45.10.x
      sourceRef:
        kind: HelmRepository
        name: prometheus-community-charts
        namespace: flux-system

  values:
    namespaceOverride: "monitoring"

    alertmanager:
      ingress:
        enabled: true
        annotations:
          cert-manager.io/cluster-issuer: letsencrypt-production
          traefik.ingress.kubernetes.io/router.entrypoints: websecure
          traefik.ingress.kubernetes.io/router.middlewares: traefik-authentik@kubernetescrd
        hosts:
          - &alertmanager-host alertmanager.${SECRET_NEW_DOMAIN}
        paths:
          - "/"
        tls:
          - hosts:
              - *alertmanager-host
            secretName: wildcard-main-tls

      config:
        receivers:
          - name: gotify-bridge
            webhook_configs:
              - url: http://alertmanager-gotify-bridge.monitoring:8080/gotify_webhook
                send_resolved: true
                
    grafana:
      ingress:
        enabled: true
        annotations:
          cert-manager.io/cluster-issuer: letsencrypt-production
          traefik.ingress.kubernetes.io/router.entrypoints: websecure
        hosts:
          - &grafana-host grafana.${SECRET_NEW_DOMAIN}
        path: "/"
        tls:
          - hosts:
              - *grafana-host
            secretName: wildcard-main-tls

    # Enable this when the cluster expands to have more than a single node
    kubeEtcd:
      enabled: false

    prometheus:
      ingress:
        enabled: true
        annotations:
          cert-manager.io/cluster-issuer: letsencrypt-production
          traefik.ingress.kubernetes.io/router.entrypoints: websecure
          traefik.ingress.kubernetes.io/router.middlewares: traefik-authentik@kubernetescrd
        hosts:
          - &prometheus-host metrics.${SECRET_NEW_DOMAIN}
        paths:
          - "/"
        tls:
          - hosts:
              - *prometheus-host
            secretName: wildcard-main-tls