# The issue of tcp connection of logstash

**URL:** <https://discuss.elastic.co/t/the-issue-of-tcp-connection-of-logstash/270780>\
**Category:** Logstash\
**Created:** [April 21, 2021, 3:27am UTC](https://discuss.elastic.co/t/the-issue-of-tcp-connection-of-logstash/270780 "2021-04-21T03:27:49Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![iammanmale](https://avatars.discourse-cdn.com/v4/letter/i/5e9695/32.png) [@iammanmale](https://discuss.elastic.co/u/iammanmale)\
**Post date:** [April 21, 2021, 3:27am UTC](https://discuss.elastic.co/t/the-issue-of-tcp-connection-of-logstash/270780/1 "2021-04-21T03:27:49Z")

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It seems to me that the limit of the no of tcp connection of logstash is about 110. If the no of connection is more than 110, filebeat will show something like handshake.....ERROR...i/o timeout when running test output command. Is there anyway to increase the no of tcp connection for logstash?

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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:** [May 19, 2021, 3:28am UTC](https://discuss.elastic.co/t/the-issue-of-tcp-connection-of-logstash/270780/2 "2021-05-19T03:28:37Z")

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