apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: falcon-dn
  namespace: falconfs
  labels:
    app: falcon-dn
spec:
  selector:
    matchLabels:
      name: falcon-dn
  template:
    metadata:
      labels:
        name: falcon-dn
    spec:
      containers:
        - name: falcon-dn
          image: dn_images
          securityContext:
            privileged: true
          lifecycle:
            postStart:
              exec:
                command:
                  - timeout
                  - 5m
                  - sh
                  - -c
                  - >
                    until pg_isready -d postgres -p 5432 --timeout=10 --quiet; do sleep 2; done;

            preStop:
              exec:
                command: ["/bin/bash", "/home/falconMeta/stop_dn.sh"]
          ports:
            - containerPort: 5432
            - containerPort: 5442
          env:
            - name: NODE_NAME
              valueFrom:
                fieldRef:
                  fieldPath: spec.nodeName
            - name: NODE_IP
              valueFrom:
                fieldRef:
                  fieldPath: status.hostIP
            - name: POD_NAME
              valueFrom:
                fieldRef:
                  fieldPath: metadata.name
            - name: POD_IP
              valueFrom:
                fieldRef:
                  fieldPath: status.podIP
            - name: POD_NAMESPACE
              valueFrom:
                fieldRef:
                  fieldPath: metadata.namespace
          envFrom:
            - configMapRef:
                name: falcon-config
          livenessProbe:
            exec:
              command: ["/bin/bash", "-c", "bash /home/falconMeta/check_liveness.sh"]
            failureThreshold: 3
            initialDelaySeconds: 10
            periodSeconds: 20
            successThreshold: 1
            timeoutSeconds: 20
          resources:
            limits:
              cpu: "16"
              memory: 100Gi
            requests:
              cpu: "4"
              memory: 25Gi
          volumeMounts:
            - name: metadata
              mountPath: /home/falconMeta/data
      terminationGracePeriodSeconds: 30
      volumes:
        - name: metadata
          hostPath:
            path: /mnt/falcon-dn-path ##modified for your local path to store dn data
            type: DirectoryOrCreate
      nodeSelector:
        falcon-dn: falcon-dn