Prevent crash when running out of disk space

I've ran into this problem in several single-node installations: Free disk space became less than 15%, and ElasticSearch crashed. Upon clearing the space and restarting, I could not access the indices. Had to reallocate them on the node in order for server state to change from red to yellow.

Can I prevent this situation?
For example, is there any way for me to set a limit in which indexing of new items is rejected, yet enough space is left for ElasticSearch server to function correctly until the problem is resolved?


Nope, the watermarks are supposed to prevent bad things from happening. But it really only works when you have more than a single node and you can move data off one node to the other.

You can try altering the watermark, but you really need to keep track of it and be aware of disk use levels.

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