apiVersion: apps/v1
kind: Deployment
metadata:
  name: loki
  namespace: monitoring
  labels:
    app: loki
spec:
  replicas: 1
  selector:
    matchLabels:
      app: loki
  strategy:
    type: RollingUpdate
    rollingUpdate:
      maxSurge: 25%
      maxUnavailable: 25%
  template:
    metadata:
      labels:
        app: loki
    spec:
      # DEV-483 bridge fix: pin Loki to k3s-worker-2 so the loki-storage-encrypted
      # RWO CSI volume co-locates with the backup-volumes CronJob (also on worker-2).
      # Removed as part of DEV-482 step 6 once the legacy backup-volumes CronJob
      # is retired (Option 4: restic -> Hetzner Object Storage).
      nodeSelector:
        kubernetes.io/hostname: k3s-worker-2
      containers:
      - name: loki
        image: grafana/loki:2.9.2
        args:
        - -config.file=/etc/loki/loki.yaml
        ports:
        - containerPort: 3100
          name: http
        - containerPort: 9096
          name: grpc
        resources:
          requests:
            cpu: 200m
            memory: 512Mi
          limits:
            cpu: 500m
            memory: 1Gi
        volumeMounts:
        - name: loki-config
          mountPath: /etc/loki
        - name: loki-storage
          mountPath: /loki
      volumes:
      - name: loki-config
        configMap:
          name: loki-config
      - name: loki-storage
        persistentVolumeClaim:
          claimName: loki-storage-encrypted