# How to set threshold for multiple log sources those are sending logs using single index

**URL:** <https://discuss.elastic.co/t/how-to-set-threshold-for-multiple-log-sources-those-are-sending-logs-using-single-index/132862>\
**Category:** Elasticsearch\
**Tags:** elastic-stack-alerting\
**Created:** [May 22, 2018, 5:15pm UTC](https://discuss.elastic.co/t/how-to-set-threshold-for-multiple-log-sources-those-are-sending-logs-using-single-index/132862 "2018-05-22T17:15:42Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![addanuj](https://avatars.discourse-cdn.com/v4/letter/a/d2c977/32.png) [@addanuj](https://discuss.elastic.co/u/addanuj)\
**Post date:** [May 22, 2018, 5:15pm UTC](https://discuss.elastic.co/t/how-to-set-threshold-for-multiple-log-sources-those-are-sending-logs-using-single-index/132862/1 "2018-05-22T17:15:43Z")

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Hi

i have a condition here...

Logsource 1 = Malwarebytes  
Logsource 2 = Symantec  
Logsource 3 = Vectra IDS

Index name = logstash-security

All are combined in a single Index, and I want to monitor logs sources if any of them stops sending me logs, I need to trigger an alert with the specific Log source Name, or by using any field of missing log source.  
right now i am able to monitor and put threshold alerts on the index but i am not able to put threshold on logsource basis, by using any field value or any other way.  
Is it possible? please help

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**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [June 19, 2018, 5:15pm UTC](https://discuss.elastic.co/t/how-to-set-threshold-for-multiple-log-sources-those-are-sending-logs-using-single-index/132862/2 "2018-06-19T17:15:47Z")

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