Red status : plugin:elasticsearch@6.2.3 Service Unavailable

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


Could you share the logs?

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