apiVersion: apps/v1
kind: DaemonSet
metadata:
  name: sync-daemon
  namespace: kube-system
  labels:
    app: sync-daemon
spec:
  selector:
    matchLabels:
      app: sync-daemon
  template:
    metadata:
      labels:
        app: sync-daemon
    spec:
      hostNetwork: true
      containers:
        - name: sync-container
          image: alpine:latest
          securityContext:
            privileged: true
          ports:
            - containerPort: 873
          volumeMounts:
            - name: pf9-env
              mountPath: /etc/pf9
              readOnly: true
            - name: vmwarelib
              mountPath: /home/ubuntu/vmware-vix-disklib-distrib
          command: ["/bin/sh", "-c"]
          args:
            - |
              # Install required packages
              apk add --no-cache rsync coreutils grep;
              # Extract variables from environment file
              IS_MASTER=$(grep -E '^export IS_MASTER=' /etc/pf9/k3s.env | cut -d'=' -f2)
              MASTER_IP=$(grep -E '^export MASTER_IP=' /etc/pf9/k3s.env | cut -d'=' -f2)
              if [ "$IS_MASTER" = "true" ]; then
                echo "Master node detected. IP: $MASTER_IP"
                # Start rsync daemon using the pre-created config file
                echo "Starting rsync daemon..."
                rsync --daemon --config=/etc/pf9/rsyncd.conf --no-detach
                # Verify rsync daemon is running
                if ps aux | grep rsync | grep -v grep; then
                  echo "rsync daemon is running."
                else
                  echo "Failed to start rsync daemon."
                  exit 1
                fi
              else
                echo "Worker node detected. Syncing from Master..."
                while true; do
                  mkdir -p /home/ubuntu/vmware-vix-disklib-distrib/
                  echo "Syncing from rsync://${MASTER_IP}"
                  rsync -avz rsync://${MASTER_IP}/vmwarelib/ /home/ubuntu/vmware-vix-disklib-distrib/
                  if [ $? -eq 0 ]; then
                    echo "Sync completed successfully."
                  else
                    echo "Sync failed. Retrying in 60 seconds..."
                  fi
                  sleep 20  # Retry every 60 seconds
                done
              fi
      volumes:
        - name: pf9-env
          hostPath:
            path: /etc/pf9
            type: Directory
        - name: vmwarelib
          hostPath:
            path: /home/ubuntu/vmware-vix-disklib-distrib
            type: DirectoryOrCreate