job "port-discovery" {
  datacenters = ["dc1"]
  type        = "batch"

  group "scan" {
    count = 1
    constraint {
      attribute = "${attr.unique.hostname}"
      value     = "odroid6"
    }

  task "scan" {
      driver = "docker"
      config {
        image        = "busybox"
        network_mode = "host"
        command      = "sh"
        args         = ["local/scan.sh"]
      }
      template {
        data = <<EOF
#!/bin/sh
TARGET="192.168.4.227"
for p in 8085 8086 8087; do
  echo "Testing $p..."
  nc -zv -w 3 $TARGET $p 2>&1 | grep -q "refused" && echo "MATCH: $p is AVAILABLE (Refused)"
  nc -zv -w 3 $TARGET $p 2>&1 | grep -q "succeeded" && echo "BUSY: $p is IN USE"
done
EOF
        destination = "local/scan.sh"
      }
    }
  }
}