# Logstash error on start

**URL:** <https://discuss.elastic.co/t/logstash-error-on-start/151695>\
**Category:** Logstash\
**Created:** [October 9, 2018, 5:54pm UTC](https://discuss.elastic.co/t/logstash-error-on-start/151695 "2018-10-09T17:54:12Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![cmahan](https://avatars.discourse-cdn.com/v4/letter/c/c5a1d2/32.png) [@cmahan](https://discuss.elastic.co/u/cmahan)\
**Post date:** [October 9, 2018, 5:54pm UTC](https://discuss.elastic.co/t/logstash-error-on-start/151695/1 "2018-10-09T17:54:12Z")

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[root@ip-172-16-10-12 logstash]# bin/logstash -f first-pipeline.conf  
WARNING: Could not find logstash.yml which is typically located in $LS\_HOME/config or /etc/logstash. You can specify the path using --path.settings. Continuing using the defaults  
Could not find log4j2 configuration at path /usr/share/logstash/config/log4j2.properties. Using default config which logs errors to the console  
[WARN] 2018-10-09 17:52:23.228 [LogStash::Runner] multilocal - Ignoring the 'pipelines.yml' file because modules or command line options are specified  
[FATAL] 2018-10-09 17:52:23.257 [LogStash::Runner] runner - Logstash could not be started because there is already another instance using the configured data directory. If you wish to run multiple instances, you must change the "path.data" setting.  
[ERROR] 2018-10-09 17:52:23.268 [LogStash::Runner] Logstash - java.lang.IllegalStateException: Logstash stopped processing because of an error: (SystemExit) exit

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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:** [November 6, 2018, 5:54pm UTC](https://discuss.elastic.co/t/logstash-error-on-start/151695/2 "2018-11-06T17:54:18Z")

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