# Kibana Discover: unknown error **URL:** \ **Category:** Kibana\ **Created:** [August 19, 2016, 7:27am UTC](https://discuss.elastic.co/t/kibana-discover-unknown-error/58430 "2016-08-19T07:27:29Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![111127](https://avatars.discourse-cdn.com/v4/letter/1/ea666f/32.png) [@111127](https://discuss.elastic.co/u/111127)\ **Post date:** [August 19, 2016, 7:27am UTC](https://discuss.elastic.co/t/kibana-discover-unknown-error/58430/1 "2016-08-19T07:27:29Z")
I'm useing ELK fllow -filebeat-1.2.3-1.x86\_64 -logstash-2.3.4-1.noarch -kibana-4.5.4-1.x86\_64 When discover in kibana- tab is chosen, "Discover: unknown error" is indicated. It's as follows whether it's detailed information of Discover: unknown error. ［error more info］ Error: unknown error ErrorAbstract@[http://10.10.11.64:5601/bundles/kibana.bundle.js?v=10000:64853:29](http://10.10.11.64:5601/bundles/kibana.bundle.js?v=10000:64853:29) Generic@[http://10.10.11.64:5601/bundles/kibana.bundle.js?v=10000:64899:22](http://10.10.11.64:5601/bundles/kibana.bundle.js?v=10000:64899:22) respond@[http://10.10.11.64:5601/bundles/kibana.bundle.js?v=10000:66222:34](http://10.10.11.64:5601/bundles/kibana.bundle.js?v=10000:66222:34) checkRespForFailure@[http://10.10.11.64:5601/bundles/kibana.bundle.js?v=10000:66183:15](http://10.10.11.64:5601/bundles/kibana.bundle.js?v=10000:66183:15) [http://10.10.11.64:5601/bundles/kibana.bundle.js?v=10000:64801:10](http://10.10.11.64:5601/bundles/kibana.bundle.js?v=10000:64801:10) processQueue@[http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:41883:31](http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:41883:31) [http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:41899:40](http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:41899:40) $eval@[http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:43127:29](http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:43127:29) $digest@[http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:42938:37](http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:42938:37) $apply@[http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:43235:32](http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:43235:32) done@[http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:37684:54](http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:37684:54) completeRequest@[http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:37882:16](http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:37882:16) requestError@[http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:37833:25](http://10.10.11.64:5601/bundles/commons.bundle.js?v=10000:37833:25) When how doing make this error, can it be settled? ---
**Author:** ![Bargs](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/bargs/32/5429_2.png) [@Bargs](https://discuss.elastic.co/u/Bargs)\ **Post date:** [August 19, 2016, 2:42pm UTC](https://discuss.elastic.co/t/kibana-discover-unknown-error/58430/2 "2016-08-19T14:42:53Z")
Are there any errors in your elasticsearch logs? If you open up the network tab of your browser's devtools, do you see any error responses? ---
**Author:** ![111127](https://avatars.discourse-cdn.com/v4/letter/1/ea666f/32.png) [@111127](https://discuss.elastic.co/u/111127)\ **Post date:** [August 22, 2016, 12:41am UTC](https://discuss.elastic.co/t/kibana-discover-unknown-error/58430/3 "2016-08-22T00:41:40Z")
thanks for your advice Following error is recorded in /var/log/kibana.stdout many times. {"type":"log","@timestamp":"2016-08-19T01:54:47+00:00","tags":["warning","elasticsearch"],"pid":22181,"message":"Unable to revive connection: [http://10.10.11.36:9200/](http://10.10.11.36:9200/)"} {"type":"log","@timestamp":"2016-08-19T01:54:47+00:00","tags":["warning","elasticsearch"],"pid":22181,"message":"No living connections"} {"type":"response","@timestamp":"2016-08-19T01:54:47+00:00","tags":[],"pid":22181,"method":"post","statusCode":502,"req":{"url":"/elasticsearch/logstash-_/\_field\_stats?level=indices","method":"post","headers":{"host":"10.10.11.64:5601","user-agent":"Mozilla/5.0 (Macintosh; Intel Mac OS X 10.10; rv:47.0) Gecko/20100101 Firefox/47.0","accept":"application/json, text/plain, /","accept-language":"ja,en-US;q=0.7,en;q=0.3","accept-encoding":"gzip, deflate","content-type":"application/json;charset=utf-8","kbn-version":"4.5.4","referer":"[http://10.10.11.64:5601/app/kibana","content-length":"178","connection":"keep-alive"},"remoteAddress":"192.168.200.41","userAgent":"192.168.200.41","referer":"http://10.10.11.64:5601/app/kibana"},"res":{"statusCode":502,"responseTime":3,"contentLength":9},"message":"POST](http://10.10.11.64:5601/app/kibana%22,%22content-length%22:%22178%22,%22connection%22:%22keep-alive%22%7D,%22remoteAddress%22:%22192.168.200.41%22,%22userAgent%22:%22192.168.200.41%22,%22referer%22:%22http://10.10.11.64:5601/app/kibana%22%7D,%22res%22:%7B%22statusCode%22:502,%22responseTime%22:3,%22contentLength%22:9%7D,%22message%22:%22POST) /elasticsearch/logstash-_/\_field\_stats?level=indices 502 3ms - 9.0B"} ---
**Author:** ![Bargs](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/bargs/32/5429_2.png) [@Bargs](https://discuss.elastic.co/u/Bargs)\ **Post date:** [August 22, 2016, 8:51pm UTC](https://discuss.elastic.co/t/kibana-discover-unknown-error/58430/4 "2016-08-22T20:51:36Z")
It looks like your Elasticsearch instance may be down or inaccessible from the host Kibana is running on. ---
**Author:** ![111127](https://avatars.discourse-cdn.com/v4/letter/1/ea666f/32.png) [@111127](https://discuss.elastic.co/u/111127)\ **Post date:** [August 23, 2016, 12:06am UTC](https://discuss.elastic.co/t/kibana-discover-unknown-error/58430/5 "2016-08-23T00:06:07Z")
thanks for your advice my elasticsearch already is running And Kibana host connect my elasticserch cluster Why does this error appear on a screen of kinaba? ---
**Author:** ![Bargs](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/bargs/32/5429_2.png) [@Bargs](https://discuss.elastic.co/u/Bargs)\ **Post date:** [August 23, 2016, 12:38pm UTC](https://discuss.elastic.co/t/kibana-discover-unknown-error/58430/6 "2016-08-23T12:38:40Z")
These lines indicate that Kibana probably isn't actually connected to Elasticsearch: > ["warning","elasticsearch"],"pid":22181,"message":"Unable to revive connection: [http://10.10.11.36:9200/](http://10.10.11.36:9200/)"} > {"type":"log","@timestamp":"2016-08-19T01:54:47+00:00","tags":["warning","elasticsearch"],"pid":22181,"message":"No living connections"} What does the Kibana status page look like? (Settings -\> Status) ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [July 6, 2017, 1:40pm UTC](https://discuss.elastic.co/t/kibana-discover-unknown-error/58430/7 "2017-07-06T13:40:32Z")