# Unable to revive connection: http://localhost:9200 with Docker

**URL:** <https://discuss.elastic.co/t/unable-to-revive-connection-http-localhost-9200-with-docker/260726>\
**Category:** Kibana\
**Tags:** docker\
**Created:** [January 11, 2021, 1:19pm UTC](https://discuss.elastic.co/t/unable-to-revive-connection-http-localhost-9200-with-docker/260726 "2021-01-11T13:19:22Z")\
**Posts on this page:** 1\
**Showing post:** 5

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**Author:** ![majagrubic](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/majagrubic/32/74459_2.png) [@majagrubic](https://discuss.elastic.co/u/majagrubic)\
**Post date:** [January 11, 2021, 1:45pm UTC](https://discuss.elastic.co/t/unable-to-revive-connection-http-localhost-9200-with-docker/260726/5 "2021-01-11T13:45:19Z")

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The error you're receiving is because Kibana cannot establish connection to Elasticsearch. Possible root cause is that something is wrong in Kibana configuration or that the Elasticsearch cluster didn't start properly. Could you check the health of ES cluster?  
`curl -X GET "localhost:9200/_cluster/health?pretty"`

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_[View the full topic](https://discuss.elastic.co/t/unable-to-revive-connection-http-localhost-9200-with-docker/260726)._