High Disk Watermark exceeded on one or more nodes

I'm running an elk + redis stack on this machine, and just started
collecting eventlogs via GELF from a windows server.

I had a look at the logs recently, and this came up:

[2014-12-17 09:31:03,820][WARN ][cluster.routing.allocation.decider]
[logstash test] high disk watermark [10%] exceeded on
[7drCr113QgSM8wcjNss_Mg][Blur] free: 632.3mb[8.4%], shards will be
relocated away from this node

[2014-12-17 09:31:03,820][INFO ][cluster.routing.allocation.decider]
[logstash test] high disk watermark exceeded on one or more nodes,
rerouting shards

I had a look at the size of Elasticsearches logs in /var/ and it's about
23gb -
I see that Elasticsearch has it's own memory heuristics but I'm not
entirely sure how that works, or whether it's affecting this- but the logs
aren't deleting after a week as I thought they should.

Could someone explain to me a bit more about what is going on here?

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It looks like this -
http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/index-modules-allocation.html#disk

What is your actual disk usage? Can you run a curl -XGET
localhost:9200/_cluster/settings and see if it mentions those settings?

On 16 December 2014 at 23:28, Pauline Kelly pauline.m.kelly1@gmail.com
wrote:

I'm running an elk + redis stack on this machine, and just started
collecting eventlogs via GELF from a windows server.

I had a look at the logs recently, and this came up:

[2014-12-17 09:31:03,820][WARN ][cluster.routing.allocation.decider]
[logstash test] high disk watermark [10%] exceeded on
[7drCr113QgSM8wcjNss_Mg][Blur] free: 632.3mb[8.4%], shards will be
relocated away from this node

[2014-12-17 09:31:03,820][INFO ][cluster.routing.allocation.decider]
[logstash test] high disk watermark exceeded on one or more nodes,
rerouting shards

I had a look at the size of Elasticsearches logs in /var/ and it's about
23gb -
I see that Elasticsearch has it's own memory heuristics but I'm not
entirely sure how that works, or whether it's affecting this- but the logs
aren't deleting after a week as I thought they should.

Could someone explain to me a bit more about what is going on here?

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