high disk watermark exceeded on one or more nodes – elasticsearch

When starting elasticsearch many┬ápeople are getting the following error message “high disk watermark exceeded on one or more nodes”.

 

This is a message from elasticsearch, which by default comes up when the drive containing your elasticsearch index is more than 90% full. It’s not related to the size of the elasticsearch index, just the remaining free disk space. If it’s bothering you, you can change the alert threshold to a different setting.

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