Read only indices FORBIDDEN

Elastic Stack Elasticsearch
1

Hi,
I have a cluster in version 6.2.4, with 300 data nodes.

I start getting an exception says that my index is in read only.
I get this when I try to index documents, but only after a while, at first it works well.

I change it manualy through the put setting API, but it still gets this error.

It also takes place at the same time on multiple indices.

Exception - "blocked by:[forbidden/12/index read-only/allow delete (api)]"

What could be the reason for this?

Thanks

2

Are you by any chance running low on disk space and have exceeded the flood stage watermark on some of the nodes?

3

I check the disk space, but i dont exceeded the flood stage watermark on any of them.

4

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