Disk usage problem?

Elastic Stack Elasticsearch
1

Hi,

I have cluster with 4 nodes: 2 data, 1 master and 1 coordinating only:

# curl -XGET localhost:9200/_cat/nodes?v
host ip heap.percent ram.percent load node.role master name
10.209.3.135 10.209.3.135 14 49 0.18 d - es3.kibana.htp.iadm
10.209.3.136 10.209.3.136 2 54 0.11 - - kibana.htp.iadm
10.209.3.133 10.209.3.133 16 50 0.09 d - es2.kibana.htp.iadm
10.209.3.134 10.209.3.134 13 39 0.00 - * es1.kibana.htp.iadm

And I would like to check disk space used, so I found command like this:

# curl -XGET localhost:9200/_cat/allocation?v
shards disk.indices disk.used disk.avail disk.total disk.percent host ip node
6 91.6mb 3.1gb 4.8gb 7.9gb 39 10.209.3.135 10.209.3.135 es3.kibana.htp.iadm
6 90.9mb 3.2gb 4.7gb 7.9gb 40 10.209.3.133 10.209.3.133 es2.kibana.htp.iadm

But as you can see it shows only usage for data nodes - without master node, why ? Why it doesn't show much space is used on master node ?

Also when I enter to Kopf interface I see on main dashboard only two data nodes (without master) , why ? Although on top in this dashboard it shows number of nodes: 4.

wrkilu

2

Is this a disk usage problem? :slight_smile:
Allocation provides a snapshot of how many shards are allocated to each data node and how much disk space they are using. Reference: https://www.elastic.co/guide/en/elasticsearch/reference/current/cat-allocation.html

3

Yeah, maybe I should write another title like "displaying disk usage" or something else - doesn't matter.

Do you have answers for my main questions ?

4

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