ElasticSearch - High Disk Watermark

[alternativesurfer]

I'm getting a warning when running Photon in docker:
[elasticsearch[2JBJ0WV][management][T#2]] WARN org.elasticsearch.cluster.routing.allocation.DiskThresholdMonitor - high disk watermark [90%] exceeded on [2JBJ0WVsQRSaPhZRFx2fQg][2JBJ0WV][/photon/photon_data/elasticsearch/data/nodes/0] free: 2.8tb[9.9%], shards will be relocated away from this node

Anyone know how to modify the config for Elasticseach to remove this check?

Yes, my disk is below 10% free space, but that 10% is still 2.8TB so I am not too worried about it.

[lonvia]

You can usually safely ignore this warning. There is a more severe stage where ES goes into a read-only mode but even that shouldn't bother you when running Photon without updating.

If you want to get rid of the warnings nonetheless, try disabling the allocation checks like this:

curl -XPUT localhost:9200/_cluster/settings -d '{
    "transient" : {
        "cluster.routing.allocation.disk.threshold_enabled" : false
    }
}'

Make sure to run it within your container after Photon has started successfully. It is a transient setting, so you have to run it every time after startup.

(Borrowed from https://stackoverflow.com/questions/33369955/low-disk-watermark-exceeded-on which also describes a couple of other settings you can tweak instead.)