Hi , I'm trying to configure logstash monitoring but can't see it in kibana , I see the index is created and have no related errors 
GET /_cluster/settings
{
  "persistent": {
    "xpack": {
      "monitoring": {
        "collection": {
          "cluster": {
            "stats": {
              "timeout": "60s"
            }
          },
          "enabled": "true"
        }
      }
    }
  }
on the logstash server :
xpack.monitoring.enabled: true
#xpack.monitoring.elasticsearch.username: logstash_system
#xpack.monitoring.elasticsearch.password: password
xpack.monitoring.elasticsearch.url: ["http://es-prd1:9200", "http://es-prd2:9200"]
#xpack.monitoring.elasticsearch.ssl.ca: [ "/path/to/ca.crt" ]
#xpack.monitoring.elasticsearch.ssl.truststore.path: path/to/file
#xpack.monitoring.elasticsearch.ssl.truststore.password: password
#xpack.monitoring.elasticsearch.ssl.keystore.path: /path/to/file
#xpack.monitoring.elasticsearch.ssl.keystore.password: password
#xpack.monitoring.elasticsearch.ssl.verification_mode: certificate
xpack.monitoring.elasticsearch.sniffing: true
#xpack.monitoring.collection.interval: 10s
#xpack.monitoring.collection.pipeline.details.enabled: true
but when querying    curl  -XGET http://es-prd1:9200/_xpack?pretty:
getting
{
  "build" : {
    "hash" : "eb782d0",
    "date" : "2018-06-29T22:03:21.668624Z"
  },
  "license" : {
    "uid" : "2236aa2b-11be-44e1-9a86-23b29c643519",
    "type" : "basic",
    "mode" : "basic",
    "status" : "active"
  },
  "features" : {
    "graph" : {
      "description" : "Graph Data Exploration for the Elastic Stack",
      "available" : false,
      "enabled" : true
    },
    "logstash" : {
      "description" : "Logstash management component for X-Pack",
      "available" : false,
      "enabled" : true
    },
    "ml" : {
      "description" : "Machine Learning for the Elastic Stack",
      "available" : false,
      "enabled" : true,
      "native_code_info" : {
        "version" : "6.3.1",
        "build_hash" : "4d0b8f0a0ef401"
      }
    },
    "monitoring" : {
      "description" : "Monitoring for the Elastic Stack",
      "available" : true,
      "enabled" : true
    },
    "rollup" : {
      "description" : "Time series pre-aggregation and rollup",
      "available" : true,
      "enabled" : true
    },
    "security" : {
      "description" : "Security for the Elastic Stack",
      "available" : false,
      "enabled" : true
    },
    "watcher" : {
      "description" : "Alerting, Notification and Automation for the Elastic Stack",
      "available" : false,
      "enabled" : true
    }
  },
  "tagline" : "You know, for X"
}
logstash available : false
please assist