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{
  "href" : "http://c6401.ambari.apache.org:8080/api/v1/clusters/MyCluster/alert_definitions/42",
  "AlertDefinition" : {
    "cluster_name" : "MyCluster",
    "component_name" : "APP_TIMELINE_SERVER",
    "description" : "This host-level alert is triggered if the App Timeline Server Web UI is unreachable.",
    "enabled" : true,
    "id" : 42,
    "ignore_host" : false,
    "interval" : 1,
    "label" : "App Timeline Web UI",
    "name" : "yarn_app_timeline_server_webui",
    "scope" : "ANY",
    "service_name" : "YARN",
    "source" : {
      "reporting" : {
        "ok" : {
          "text" : "HTTP {0} response in {2:.3f}s"
        },
        "warning" : {
          "text" : "HTTP {0} response from {1} in {2:.3f}s ({3})"
        },
        "critical" : {
          "text" : "Connection failed to {1} ({3})"
        }
      },
      "type" : "WEB",
      "uri" : {
        "http" : "{{yarn-site/yarn.timeline-service.webapp.address}}",
        "https" : "{{yarn-site/yarn.timeline-service.webapp.https.address}}",
        "https_property" : "{{yarn-site/yarn.http.policy}}",
        "https_property_value" : "HTTPS_ONLY",
        "kerberos_keytab" : "{{yarn-site/yarn.timeline-service.http-authentication.kerberos.keytab}}",
        "kerberos_principal" : "{{yarn-site/yarn.timeline-service.http-authentication.kerberos.principal}}",
        "default_port" : 0.0,
        "connection_timeout" : 5.0
      }
    }
  }
}