# Logstash-\* in Alert/Action section

**URL:** <https://discuss.elastic.co/t/logstash-in-alert-action-section/266070>\
**Category:** Logstash\
**Created:** [March 3, 2021, 8:33am UTC](https://discuss.elastic.co/t/logstash-in-alert-action-section/266070 "2021-03-03T08:33:05Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![MABN](https://avatars.discourse-cdn.com/v4/letter/m/ecc23a/32.png) [@MABN](https://discuss.elastic.co/u/MABN)\
**Post date:** [March 3, 2021, 8:33am UTC](https://discuss.elastic.co/t/logstash-in-alert-action-section/266070/1 "2021-03-03T08:33:05Z")

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Hi

I used rsyslog to send log to ELK, like this guide [How To Centralize Logs with Rsyslog, Logstash, and Elasticsearch on Ubuntu 14.04 | Elastic](https://www.elastic.co/blog/how-to-centralize-logs-with-rsyslog-logstash-and-elasticsearch-on-ubuntu-14-04)

Then I used grok to pars log's messages in logstash.conf

Now I want to create Alert, but I can't used logstash-\* index in "Log threshold" filter.

What should I do?

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<div class="post-metadata">

**Author:** ![MABN](https://avatars.discourse-cdn.com/v4/letter/m/ecc23a/32.png) [@MABN](https://discuss.elastic.co/u/MABN)\
**Post date:** [March 3, 2021, 8:37am UTC](https://discuss.elastic.co/t/logstash-in-alert-action-section/266070/2 "2021-03-03T08:37:37Z")

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It is necessary to mention i can use this filter in discovery section

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [March 31, 2021, 8:38am UTC](https://discuss.elastic.co/t/logstash-in-alert-action-section/266070/3 "2021-03-31T08:38:00Z")

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