itamae/cookbooks/consul/files/etc/consul.d/check-load.json

{
  "check": {
    "id": "load-average",
    "name": "Check for Load Average",
    "args": ["/usr/lib/nagios/plugins/check_load", "-r", "--warning=1,1,1", "--critical=2,2,2"],
    "interval": "60s",
    "timeout": "10s"
  }
}