# Logstash restart loop

**URL:** <https://discuss.elastic.co/t/logstash-restart-loop/177163>\
**Category:** Logstash\
**Created:** [April 16, 2019, 10:32pm UTC](https://discuss.elastic.co/t/logstash-restart-loop/177163 "2019-04-16T22:32:10Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![johndowe](https://avatars.discourse-cdn.com/v4/letter/j/3ab097/32.png) [@johndowe](https://discuss.elastic.co/u/johndowe)\
**Post date:** [April 16, 2019, 10:32pm UTC](https://discuss.elastic.co/t/logstash-restart-loop/177163/1 "2019-04-16T22:32:11Z")

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I have setup Filebeats succesfully and noticed logstash is still not processing any logs since it is continuously restarting. This is what I am seeing in the log files on the Raspberry Pi :

[2019-04-17T00:25:17,025][ERROR][org.logstash.Logstash] java.lang.IllegalStateException: Logstash stopped processing because of an error: (LoadError) load error: ffi/ffi -- java.lang.NullPointerException: null  
[2019-04-17T00:27:27,481][ERROR][org.logstash.Logstash] java.lang.IllegalStateException: Logstash stopped processing because of an error: (LoadError) load error: ffi/ffi -- java.lang.NullPointerException: null

Syslog:  
Apr 17 00:25:17 raspberrypi logstash[12723]: [2019-04-17T00:25:17,025][ERROR][org.logstash.Logstash] java.lang.IllegalStateException: Logstash stopped processing because of an error: (LoadError) load error: ffi/ffi -- java.lang.NullPointerException: null  
Apr 17 00:25:17 raspberrypi systemd[1]: logstash.service: main process exited, code=exited, status=1/FAILURE  
Apr 17 00:25:17 raspberrypi systemd[1]: Unit logstash.service entered failed state.  
Apr 17 00:25:17 raspberrypi systemd[1]: logstash.service holdoff time over, scheduling restart.  
Apr 17 00:25:17 raspberrypi systemd[1]: Stopping logstash...  
Apr 17 00:25:17 raspberrypi systemd[1]: Starting logstash...  
Apr 17 00:25:17 raspberrypi systemd[1]: Started logstash.

Any idea what parameters I can tweak to get this working?

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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 14, 2019, 10:32pm UTC](https://discuss.elastic.co/t/logstash-restart-loop/177163/2 "2019-05-14T22:32:12Z")

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