# Watcher for index size
**URL:** https://discuss.elastic.co/t/watcher-for-index-size/172612
**Category:** Elasticsearch
**Created:** [March 16, 2019, 1:15am UTC](https://discuss.elastic.co/t/watcher-for-index-size/172612 "2019-03-16T01:15:11Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@taandrews](https://discuss.elastic.co/u/taandrews)
#### Post date: [March 16, 2019, 1:15am UTC](https://discuss.elastic.co/t/watcher-for-index-size/172612/1 "2019-03-16T01:15:12Z")
I have several indices that have a prefix, let's say ABCD-123-\* . Is there a way to monitor/watch each individual index that starts with the aforementioned prefix and alert when the index reach a particular size. For instance have a watcher that will trigger an email when an index that starts with ABCD-123-\* hits 40GB. I can't find any info for how to accomplish this.
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### Author:  [@spinscale](https://discuss.elastic.co/u/spinscale)
#### Post date: [March 20, 2019, 8:48am UTC](https://discuss.elastic.co/t/watcher-for-index-size/172612/2 "2019-03-20T08:48:39Z")
hey,
you could use the (monitoring feature)[[https://www.elastic.co/guide/en/elasticsearch/reference/6.6/configuring-monitoring.html](https://www.elastic.co/guide/en/elasticsearch/reference/6.6/configuring-monitoring.html)] and query those indices in a watch.
Outside of watcher, the [index lifecycle management feature](https://www.elastic.co/guide/en/elasticsearch/reference/6.6/index-lifecycle-management-api.html) might be interesting for you as well, depending on what you plan to do with that above information and if automation can help maybe.
--Alex
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### Author:  [@taandrews](https://discuss.elastic.co/u/taandrews)
#### Post date: [March 21, 2019, 3:23pm UTC](https://discuss.elastic.co/t/watcher-for-index-size/172612/3 "2019-03-21T15:23:04Z")
Thank you for the info. I am a bit new to ES. I need to see an example of how this is done. I can see the filed that I need but can't drill down to it.
Thank you.
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### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [April 18, 2019, 3:23pm UTC](https://discuss.elastic.co/t/watcher-for-index-size/172612/4 "2019-04-18T15:23:08Z")
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