ElasticSearch find disk space usage

How can I find the amount of disk space that Elastic Search is using for my indexes? I'm currently running it locally and I'm trying to see how much disk space I will need on the VM that I'll be spinning up.

8 Answers

The Elasticsearch way to do this would be to use _cat/shards and look at the store column:

curl -XGET ""
index shard prirep state docs store ip node
myindex_2014_12_19 2 r STARTED 76661 415.6mb 192.168.1.1 Georgianna Castleberry
myindex_2014_12_19 2 p STARTED 76661 417.3mb 192.168.1.2 Frederick Slade
myindex_2014_12_19 2 r STARTED 76661 416.9mb 192.168.1.3 Maverick
myindex_2014_12_19 0 r STARTED 76984 525.9mb 192.168.1.1 Georgianna Castleberry
myindex_2014_12_19 0 r STARTED 76984 527mb 192.168.1.2 Frederick Slade
myindex_2014_12_19 0 p STARTED 76984 526mb 192.168.1.3 Maverick
myindex_2014_12_19 3 r STARTED 163 208.5kb 192.168.1.1 Georgianna Castleberry
myindex_2014_12_19 3 p STARTED 163 191.4kb 192.168.1.2 Frederick Slade
myindex_2014_12_19 3 r STARTED 163 181.6kb 192.168.1.3 Maverick
myindex_2014_12_19 1 p STARTED 424923 2.1gb 192.168.1.1 Georgianna Castleberry
myindex_2014_12_19 1 r STARTED 424923 2.1gb 192.168.1.2 Frederick Slade
myindex_2014_12_19 1 r STARTED 424923 2.1gb 192.168.1.3 Maverick
myindex_2014_12_19 4 r STARTED 81020 435.9mb 192.168.1.1 Georgianna Castleberry
myindex_2014_12_19 4 p STARTED 81020 437.8mb 192.168.1.2 Frederick Slade
myindex_2014_12_19 4 r STARTED 81020 437.8mb 192.168.1.3 Maverick

Otherwise in Linux to view the space by folder use:

du -hs /myelasticsearch/data/folder

or to view the space by filesystem:

df -h

In case you don't need per-shard statistics returned by /_cat/shards you can use

curl -XGET '

to get used and available disk space for each node.

To view the overall disk usage/available space on ES cluster you can use the following command:

curl -XGET 'localhost:9200/_cat/allocation?v&pretty'

Hope this helps.

you can use the nodes stats rest API
see:

make a request for the fs stats like so:

and you will see:

{ "cluster_name" : "<cluster>", "nodes" : { "pEO34wutR7qk3Ix8N7MgyA" : { "timestamp" : 1438880525206, "name" : "<name>", "transport_address" : "inet[/10.128.37.111:9300]", "host" : "<host>", "ip" : [ "inet[/10.128.37.111:9300]", "NONE" ], "fs" : { "timestamp" : 1438880525206, "total" : { "total_in_bytes" : 363667091456, "free_in_bytes" : 185081352192, "available_in_bytes" : 166608117760, "disk_reads" : 154891, "disk_writes" : 482628039, "disk_io_op" : 482782930, "disk_read_size_in_bytes" : 6070391808, "disk_write_size_in_bytes" : 1989713248256, "disk_io_size_in_bytes" : 1995783640064, "disk_queue" : "0", "disk_service_time" : "0" }, "data" : [ { "path" : "/data1/elasticsearch/data/<cluster>/nodes/0", "mount" : "/data1", "dev" : "/dev/sda4", "total_in_bytes" : 363667091456, "free_in_bytes" : 185081352192, "available_in_bytes" : 166608117760, "disk_reads" : 154891, "disk_writes" : 482628039, "disk_io_op" : 482782930, "disk_read_size_in_bytes" : 6070391808, "disk_write_size_in_bytes" : 1989713248256, "disk_io_size_in_bytes" : 1995783640064, "disk_queue" : "0", "disk_service_time" : "0" } ] } } }
}

the space for the data drive is listed:

"total" : { "total_in_bytes" : 363667091456, "free_in_bytes" : 185081352192, "available_in_bytes" : 166608117760,

A more concise solution to find the size of indices is to use

curl -XGET 'localhost:9200/_cat/indices?v'

The output has a 'store.size' column that tells you exactly the size of an index.

health status index uuid pri rep docs.count docs.deleted store.size pri.store.size
yellow open logstash-2017.03.01 TfraFM8TQkSXdxjx13CnpQ 5 1 33330000 0 1gb 1gb
yellow open .monitoring-es-2-2017.03.02 10YscrcfQuGny5wMxeb0TA 1 1 68834 88 30.3mb 30.3mb
yellow open .kibana GE6xXV7QT-mNbX7xTPbZ4Q 1 1 3 0 14.5kb 14.5kb
yellow open .monitoring-es-2-2017.03.01 SPeQNnPlRB6y7G6w1Axokw 1 1 29441 108 14.7mb 14.7mb
yellow open .monitoring-data-2 LLeWqsD-QE-rPFblwu5K_Q 1 1 3 0 6.9kb 6.9kb
yellow open .monitoring-kibana-2-2017.03.02 l_MAPERUTmSbq0xbhpnf2Q 1 1 5320 0 1.1mb 1.1mb
yellow open .monitoring-kibana-2-2017.03.01 UFVg9c7TTA-nbsEd2d4oFw 1 1 2699 0 763.4kb 763.4kb

In addition you can find out about available disk space by using

curl -XGET 'localhost:9200/_nodes/_local/stats/fs'

Look up the disk space information under the 'fs' key

{ "_nodes": { "total": 1, "successful": 1, "failed": 0 }, "cluster_name": "elasticsearch", "nodes": { "MfgVaoRQT9iRAZtAvO549Q": { "fs": { "timestamp": 1488466297268, "total": { "total_in_bytes": 29475753984, "free_in_bytes": 18352095232, "available_in_bytes": 18352095232 }, } } }
}

I've tested this for ElasticSearch version 5.2.1

You may want to use the _cat api for nodewise disk space usage

curl

Reference :

RUN BELOW TO COMMAND TO FIND OUT DISK SPACE USED BY EACH ELASTICSEARCH INDEXING

# FOR SHARDS
curl
# OR
GET _cat/shards?v&pretty

RUN BELOW TO COMMAND TO FIND OUT DISK SPACE USED BY EACH ELASTICSEARCH INDICES

# FOR INDICES
curl -XGET 'host:9200/_cat/indices?v&pretty
# SORT BY SIZE STORE OF INDICES
curl -XGET 'host:9200/_cat/indices/_all?v&s=store.size

OUTPUT

# GET /_cat/indices/_all?v&s=store.size
health status index uuid pri rep docs.count docs.deleted store.size pri.store.size
yellow open sync-rails-logs sSIBqr2iQHG8TGeKFozTpQ 5 1 0 0 1.2kb 1.2kb
yellow open web-nginx-logs iTV-xFFBSdy-C2-NTuEwqQ 5 1 0 0 1.2kb 1.2kb
yellow open web-rails-logs BYD_qHS8SguZvBuGpNvCwA 5 1 0 0 1.2kb 1.2kb
yellow open sync-nginx-logs XAI1hsxlT6qBYN4Ql36lbg 5 1 0 0 1.2kb 1.2kb
green open .tasks XGrMZiqCR0Wr33cCG1u0VQ 1 0 1 0 6.2kb 6.2kb
green open .kibana_1 -g0ztoGWQnuOXnP6di7OYQ 1 0 13 0 100.6kb 100.6kb
green open .kibana_2 eAxt-LXbQyybCyp_6ZYNZg 1 0 14 5 432.2kb 432.2kb
green open sync-nginx-logs-2019-09-13 Q_Ki0dvXQEiuqiGCd10hRg 1 0 144821 0 28.8mb 28.8mb
green open sync-nginx-logs-2019-08-31 m7-oi7ZTSM6ZH_wPDWwbdw 1 0 384954 0 76.4mb 76.4mb
yellow open sync-nginx-logs-2019-08-26 gAvOPNhMRZK6fjAazpzPQQ 5 1 354260 0 76.5mb 76.5mb
green open sync-nginx-logs-2019-09-01 vvgysMB_SqGDFegF6_wOEQ 1 0 400248 0 79.5mb 79.5mb
green open sync-nginx-logs-2019-09-02 8yHv66FuTE6A8L5GgnEl3g 1 0 416184 0 84.8mb 84.8mb
green open sync-nginx-logs-2019-09-07 iZCX1A3fRMaglOCHFLaFsA 1 0 436122 0 86.7mb 86.7mb
green open sync-nginx-logs-2019-09-08 4Y9rA_1cSlGJ9KADmickQQ 1 0 446164 0 88.3mb 88.3mb

RUN BELOW TO COMMAND TO FIND OUT OVERALL DISK SPACE USED BY ALL ELASTICSEARCH INDICES

GET _cat/nodes?h=h,diskAvail OR
curl

OUTPUT:-

148.3gb

Or you may also query disk directly to measure disk space for each directories under /var/lib/elasticsearch/[environment name]/nodes/0/indices on Elasticsearch nodes.

$ du -b --max-depth=1 /var/lib/elasticsearch/[environment name]/nodes/0/indices \ | sort -rn | numfmt --to=iec --suffix=B --padding=5
> 17GB /var/lib/elasticsearch/env1/nodes/0/indices
3.8GB /var/lib/elasticsearch/env1/nodes/0/indices/index1
2.1GB /var/lib/elasticsearch/env1/nodes/0/indices/index2
1.2GB ...

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ElasticSearch find disk space usage

8 Answers

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