# Query ES cluster state size
**URL:** https://discuss.elastic.co/t/query-es-cluster-state-size/261542
**Category:** Elasticsearch
**Created:** [January 19, 2021, 12:36pm UTC](https://discuss.elastic.co/t/query-es-cluster-state-size/261542 "2021-01-19T12:36:02Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@CanardMoussant](https://discuss.elastic.co/u/CanardMoussant)
#### Post date: [January 19, 2021, 12:36pm UTC](https://discuss.elastic.co/t/query-es-cluster-state-size/261542/1 "2021-01-19T12:36:02Z")
I would like to get the size of the compressed cluster state (as done in `PublishClusterStateAction`) using an external API. Is it something possible? I am not calling it from java so I cannot duplicate the code doing the serialisation of the cluster state.
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### Author:  [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)
#### Post date: [January 19, 2021, 1:15pm UTC](https://discuss.elastic.co/t/query-es-cluster-state-size/261542/2 "2021-01-19T13:15:07Z")
I don't think so, it's quite expensive to compute this number so it almost never happens. Why would you want to know this statistic? It's a pretty obscure internal detail.
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### Author:  [@CanardMoussant](https://discuss.elastic.co/u/CanardMoussant)
#### Post date: [January 19, 2021, 1:28pm UTC](https://discuss.elastic.co/t/query-es-cluster-state-size/261542/3 "2021-01-19T13:28:27Z")
Thanks! I would like to publish this as a metric to monitor my clusters :). Something like every hour or so.
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### Author:  [@DavidTurner](https://discuss.elastic.co/u/DavidTurner)
#### Post date: [January 19, 2021, 1:36pm UTC](https://discuss.elastic.co/t/query-es-cluster-state-size/261542/4 "2021-01-19T13:36:37Z")
I'm still none the wiser about how this is a useful number to look at, but FWIW this will give you a good approximation:
```auto
curl -s https://$ES:9200/_cluster/state -H'Accept: application/smile' | gzip -3 | wc -c
```
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [February 16, 2021, 1:36pm UTC](https://discuss.elastic.co/t/query-es-cluster-state-size/261542/5 "2021-02-16T13:36:48Z")
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