# MaxListenersExceededWarning in kibana 8.2.0

**URL:** <https://discuss.elastic.co/t/maxlistenersexceededwarning-in-kibana-8-2-0/305031>\
**Category:** Kibana\
**Created:** [May 18, 2022, 8:00am UTC](https://discuss.elastic.co/t/maxlistenersexceededwarning-in-kibana-8-2-0/305031 "2022-05-18T08:00:42Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![wo7387196](https://avatars.discourse-cdn.com/v4/letter/w/94ad74/32.png) [@wo7387196](https://discuss.elastic.co/u/wo7387196)\
**Post date:** [May 18, 2022, 8:00am UTC](https://discuss.elastic.co/t/maxlistenersexceededwarning-in-kibana-8-2-0/305031/1 "2022-05-18T08:00:42Z")

</div>

```auto
[2022-05-18T15:52:58.633+08:00][WARN][process] MaxListenersExceededWarning: Possible EventTarget memory leak detected. 11 abort listeners added to [AbortSignal]. Use events.setMaxListeners() to increase limit
    at AbortSignal.[kNewListener] (node:internal/event_target:430:17)
    at AbortSignal.[kNewListener] (node:internal/abort_controller:172:24)
    at AbortSignal.addEventListener (node:internal/event_target:539:23)
    at /home/hcbjadmin/elastic_stack/kibana-8.2.0/src/plugins/data/common/search/poll_search.js:33:77
    at Observable._subscribe (/home/hcbjadmin/elastic_stack/kibana-8.2.0/node_modules/rxjs/internal/observable/defer.js:10:21)
    at Observable._trySubscribe (/home/hcbjadmin/elastic_stack/kibana-8.2.0/node_modules/rxjs/internal/Observable.js:44:25)
    at Observable.subscribe (/home/hcbjadmin/elastic_stack/kibana-8.2.0/node_modules/rxjs/internal/Observable.js:30:22)
    at DoOperator.call (/home/hcbjadmin/elastic_stack/kibana-8.2.0/node_modules/rxjs/internal/operators/tap.js:32:23)
    at Observable.subscribe (/home/hcbjadmin/elastic_stack/kibana-8.2.0/node_modules/rxjs/internal/Observable.js:25:31)
    at DoOperator.call (/home/hcbjadmin/elastic_stack/kibana-8.2.0/node_modules/rxjs/internal/operators/tap.js:32:23)
    at Observable.subscribe (/home/hcbjadmin/elastic_stack/kibana-8.2.0/node_modules/rxjs/internal/Observable.js:25:31)
    at CatchOperator.call (/home/hcbjadmin/elastic_stack/kibana-8.2.0/node_modules/rxjs/internal/operators/catchError.js:30:23)
    at Observable.subscribe (/home/hcbjadmin/elastic_stack/kibana-8.2.0/node_modules/rxjs/internal/Observable.js:25:31)
    at Object.innerSubscribe (/home/hcbjadmin/elastic_stack/kibana-8.2.0/node_modules/rxjs/internal/innerSubscribe.js:102:23)
    at SwitchMapSubscriber._innerSub (/home/hcbjadmin/elastic_stack/kibana-8.2.0/node_modules/rxjs/internal/operators/switchMap.js:63:51)
    at SwitchMapSubscriber._next (/home/hcbjadmin/elastic_stack/kibana-8.2.0/node_modules/rxjs/internal/operators/switchMap.js:53:14)
    at SwitchMapSubscriber.Subscriber.next (/home/hcbjadmin/elastic_stack/kibana-8.2.0/node_modules/rxjs/internal/Subscriber.js:66:18)
    at /home/hcbjadmin/elastic_stack/kibana-8.2.0/node_modules/rxjs/internal/util/subscribeToPromise.js:7:24
    at runMicrotasks (<anonymous>)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)

```

 ![image](https://us1.discourse-cdn.com/elastic/original/3X/e/4/e4cd3bfd06612ed8f23a53bddc65b04e40e10640.png)  
 ![image](https://us1.discourse-cdn.com/elastic/original/3X/9/0/903e0d69b279688592603143e778706acd135b5b.png)  
This happens every time when refresh the Dashboard-[Metrics System] Host overview, And there is some data （cpu ,memory） missing。

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [June 15, 2022, 8:01am UTC](https://discuss.elastic.co/t/maxlistenersexceededwarning-in-kibana-8-2-0/305031/2 "2022-06-15T08:01:04Z")

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