apiVersion: apps/v1
kind: Deployment
metadata:
  name: prometheus
spec:
  replicas: 1
  strategy:
    type: Recreate
  selector:
    matchLabels:
      app: prometheus
  template:
    metadata:
      labels:
        app: prometheus
    spec:
      containers:
        - name: prometheus
          image: prom/prometheus:v3.5.0
          args:
            - --config.file=/etc/prometheus/prometheus.yml
            - --storage.tsdb.path=/prometheus
            - --storage.tsdb.retention.time=15d
            - --web.enable-lifecycle
            - --web.enable-remote-write-receiver
            # Not in the Ansible template. Without it Prometheus discards the
            # exemplars Tempo's metrics-generator remote-writes
            # (send_exemplars: true), so the datasource's
            # exemplarTraceIdDestinations has nothing to link.
            - --enable-feature=exemplar-storage
          ports:
            - containerPort: 9090
          readinessProbe:
            httpGet:
              path: /-/ready
              port: 9090
          resources:
            requests:
              cpu: 50m
              memory: 256Mi
            limits:
              memory: 1Gi
          volumeMounts:
            - name: config
              mountPath: /etc/prometheus/prometheus.yml
              subPath: prometheus.yml
            - name: rules
              mountPath: /etc/prometheus/rules
            - name: data
              mountPath: /prometheus
      volumes:
        - name: config
          configMap:
            name: prometheus-config
        - name: rules
          configMap:
            name: prometheus-rules
        - name: data
          persistentVolumeClaim:
            claimName: prometheus-data