consul system checks

checks.json

{
  "checks": [
    {
      "id": "memory-check",
      "name": "mem",
      "script": "/usr/lib64/nagios/plugins/check_used_mem",
      "interval": "30s"
    },
    {
      "id": "cpu-check",
      "name": "cpu",
      "script": "/usr/lib64/nagios/plugins/check_cpu 20 10",
      "interval": "20s"
    },
    {
      "id": "disk-check",
      "name": "disk",
      "script": "/usr/lib64/nagios/plugins/check_disk -w 10% -c 5% -A -I '/archive/*' ",
      "interval": "12s"
    }

  ]
}