itamae/cookbooks/prometheus/files/etc/consul.d/service-prometheus.json

{
  "service": {
    "name": "prometheus",
    "port": 9090,
    "check":{
      "http": "http://localhost:9090/",
      "tls_skip_verify": false,
      "interval": "60s",
      "timeout": "1s",
      "success_before_passing": 3
    }
  }
}