# Red status : plugin:elasticsearch@6.2.3 Service Unavailable **URL:** \ **Category:** Elasticsearch\ **Created:** [April 7, 2018, 7:15pm UTC](https://discuss.elastic.co/t/red-status-plugin-elasticsearch-6-2-3-service-unavailable/127178 "2018-04-07T19:15:57Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![maxime-benoit](https://avatars.discourse-cdn.com/v4/letter/m/b5e925/32.png) [@maxime-benoit](https://discuss.elastic.co/u/maxime-benoit)\ **Post date:** [April 7, 2018, 7:15pm UTC](https://discuss.elastic.co/t/red-status-plugin-elasticsearch-6-2-3-service-unavailable/127178/1 "2018-04-07T19:15:57Z")
Hi everyone, I'm very new to elasticsearch and I'm facing my first red status. My cluster has 4 data nodes (3 master candidates). Everything was perfectly working until now (so I assume my conf files are ok). What happened : (1) I sent log data to elasticsearch using logstash (2) This was taking forever so I decided to stop the process (3) Status went red This must be a shard problem ... but I can't even see what's my cluster health. I get the error "master\_not\_discovered\_exception". Do you know how can I debug my cluster ? I don't care loosing the data if necessary ... Thank you very much Maxime ---
**Author:** ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet)\ **Post date:** [April 7, 2018, 8:11pm UTC](https://discuss.elastic.co/t/red-status-plugin-elasticsearch-6-2-3-service-unavailable/127178/2 "2018-04-07T20:11:31Z")
Could you share the logs? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [May 5, 2018, 8:12pm UTC](https://discuss.elastic.co/t/red-status-plugin-elasticsearch-6-2-3-service-unavailable/127178/3 "2018-05-05T20:12:05Z")
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