Magento2.4 How to find storage left on the disk for elastic search

Question

I am facing the following issue on elastic search.

TOO_MANY_REQUESTS/12/disk usage exceeded flood-stage watermark, index has read-only-allow-delete block

I tried “cluster.routing.allocation.disk.threshold_enabled” : false & “index.blocks.read_only_allow_delete”: null but still I get the same issue

How to check free space available and the path of the elastic search storage?

I tried df -h but I am not sure where the path is located. rehel-root shows 98%, Is that the path linked to elastic search?

Answer 1

This path is linked to Elasticsearch, By doing curl -XGET 'http://localhost:9200/_cat/allocation?v' you will see the free space available at Elasticsearch.

Total 49.9GB of disk on the root path that mapping df -h directory /, 98% of space used.

I cleared a few spaces and it's working now, Have to allocate space or move the project to /DATA where 2.9TB is available.

We have three states on Elasticsearch Disk Watermark, Based on your config file this will show, the Flood state is the one where read_only_allow_delete will be enabled by Elasticsearch

• Low disk watermark
• High disk watermark
• Flood stage disk watermark

PUT _cluster/settings
{
  "transient": {
   
    "cluster.routing.allocation.disk.watermark.low": "85%",
    "cluster.routing.allocation.disk.watermark.high": "90%",
    "cluster.routing.allocation.disk.watermark.flood_stage": "95%",
    "cluster.info.update.interval": "1m"
  }
}

For more details, you can refer to the link.

https://opster.com/guides/elasticsearch/capacity-planning/elasticsearch-disk-watermark/
https://opster.com/guides/elasticsearch/capacity-planning/elasticsearch-high-disk-watermark/