---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: minio
  labels:
     app.kubernetes.io/name: minio
spec:
  selector:
    matchLabels:
      app.kubernetes.io/name: minio
  serviceName: minio-svc
  replicas: 4
  podManagementPolicy: Parallel
  template:
    metadata:
      labels:
        app.kubernetes.io/name: minio
    spec:
      affinity:
        podAntiAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            - labelSelector:
                matchExpressions:
                  - key: app
                    operator: In
                    values:
                      - minio
              topologyKey: kubernetes.io/hostname
      nodeSelector:
        dedicated: storage
      tolerations:
        - key: dedicated
          operator: Equal
          value: storage
          effect: NoSchedule
      containers:
        - name: minio
          env:
            - name: MINIO_PROMETHEUS_AUTH_TYPE
              value: public
          envFrom:
            - secretRef:
                name: minio-secrets
          image: minio/minio:RELEASE.2022-12-12T19-27-27Z
          args:
            - server
            - http://minio-{0...3}.minio-svc.camtiler.svc.cluster.local/data
            - --address
            - 0.0.0.0:9000
            - --console-address
            - 0.0.0.0:9001
          ports:
            - containerPort: 9000
              name: http
            - containerPort: 9001
              name: console
          readinessProbe:
            httpGet:
              path: /minio/health/ready
              port: 9000
            initialDelaySeconds: 2
            periodSeconds: 5
          resources:
            requests:
              cpu: 300m
              memory: 1Gi
            limits:
              cpu: 4000m
              memory: 2Gi
          volumeMounts:
            - name: minio-data
              mountPath: /data
  volumeClaimTemplates:
    - metadata:
        name: minio-data
      spec:
        accessModes:
          - ReadWriteOnce
        resources:
          requests:
            storage: '30Gi'
        storageClassName: minio
---
apiVersion: v1
kind: Service
metadata:
  name: minio
spec:
  sessionAffinity: ClientIP
  type: ClusterIP
  ports:
    - port: 80
      targetPort: 9000
      protocol: TCP
      name: http
  selector:
    app.kubernetes.io/name: minio
---
kind: Service
apiVersion: v1
metadata:
  name: minio-svc
spec:
  selector:
    app.kubernetes.io/name: minio
  clusterIP: None
  publishNotReadyAddresses: true
  ports:
    - name: http
      port: 9000
    - name: console
      port: 9001
---
apiVersion: monitoring.coreos.com/v1
kind: PodMonitor
metadata:
  name: minio
spec:
  selector:
    matchLabels:
      app.kubernetes.io/name: minio
  podMetricsEndpoints:
    - port: http
      path: /minio/v2/metrics/node
  podTargetLabels:
    - app.kubernetes.io/name
---
apiVersion: monitoring.coreos.com/v1
kind: ServiceMonitor
metadata:
  name: minio
spec:
  endpoints:
  - bearerTokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token
    honorLabels: true
    port: minio
    path: /minio/v2/metrics/cluster
  selector:
    matchLabels:
      app.kubernetes.io/name: minio
---
apiVersion: networking.k8s.io/v1
kind: Ingress
metadata:
  name: minio
  annotations:
    kubernetes.io/ingress.class: traefik
    traefik.ingress.kubernetes.io/router.entrypoints: websecure
    traefik.ingress.kubernetes.io/router.tls: "true"
    external-dns.alpha.kubernetes.io/target: traefik.k-space.ee
spec:
  rules:
    - host: cams-s3.k-space.ee
      http:
        paths:
          - pathType: Prefix
            path: "/"
            backend:
              service:
                name: minio-svc
                port:
                  name: http
  tls:
    - hosts:
        - "*.k-space.ee"
---
apiVersion: monitoring.coreos.com/v1
kind: PrometheusRule
metadata:
  name: minio
spec:
  groups:
    - name: minio
      rules:
        - alert: MinioClusterDiskOffline
          expr: minio_cluster_disk_offline_total > 0
          for: 0m
          labels:
            severity: critical
          annotations:
            summary: Minio cluster disk offline (instance {{ $labels.instance }})
            description: "Minio cluster disk is offline"
        - alert: MinioNodeDiskOffline
          expr: minio_cluster_nodes_offline_total > 0
          for: 0m
          labels:
            severity: critical
          annotations:
            summary: Minio node disk offline (instance {{ $labels.instance }})
            description: "Minio cluster node disk is offline"
        - alert: MinioDiskSpaceUsage
          expr: disk_storage_available / disk_storage_total * 100 < 10
          for: 0m
          labels:
            severity: warning
          annotations:
            summary: Minio disk space usage (instance {{ $labels.instance }})
            description: "Minio available free space is low (< 10%)"