# Logstash is periodically hanging (unresponsive) and not sending anything to ES. How to recognize and fix? **URL:** \ **Category:** Logstash\ **Created:** [December 16, 2020, 5:10pm UTC](https://discuss.elastic.co/t/logstash-is-periodically-hanging-unresponsive-and-not-sending-anything-to-es-how-to-recognize-and-fix/258896 "2020-12-16T17:10:06Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![user2416](https://avatars.discourse-cdn.com/v4/letter/u/97f17d/32.png) [@user2416](https://discuss.elastic.co/u/user2416)\ **Post date:** [December 16, 2020, 5:10pm UTC](https://discuss.elastic.co/t/logstash-is-periodically-hanging-unresponsive-and-not-sending-anything-to-es-how-to-recognize-and-fix/258896/1 "2020-12-16T17:10:06Z")
We are running logstash on Kubernetes. And some logstash Pods stops inserting data into ES for some unknown reason periodically (once in 2-7 days) And logstash does not indicate there's something wrong with it. I mean the logstash process does not crash.The logs do not show any errors. The only way I may know that the logstash stopped inserting data into ES is by looking into kibana and see no new data. And restarting logstash is fixing the issue or after 2-4hrs it starts working normal again. Has anyone had that kind of issues before? How can I identify whats causing this issue and fix it? Logstash is receiving data from Filebeat for every `30sec` interval. It is receiving data from `~70 filebeat pods` and load-balancing enabled on filebeat logstash output section to distribute load across all logstash pods `Logstash version - 7.6.2` `pipeline.workers: 12` `LS_JAVA_OPTS=" -Xmx4g -Xms4g"` `Number of logstash pods - 8` ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [January 13, 2021, 5:10pm UTC](https://discuss.elastic.co/t/logstash-is-periodically-hanging-unresponsive-and-not-sending-anything-to-es-how-to-recognize-and-fix/258896/2 "2021-01-13T17:10:18Z")
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