# Error starting logstash 6.2.2

**URL:** <https://discuss.elastic.co/t/error-starting-logstash-6-2-2/121779>\
**Category:** Logstash\
**Created:** [February 28, 2018, 5:44am UTC](https://discuss.elastic.co/t/error-starting-logstash-6-2-2/121779 "2018-02-28T05:44:50Z")\
**Posts on this page:** 4\
**Page:** 1

<div class="post-metadata">

**Author:** ![lynx](https://avatars.discourse-cdn.com/v4/letter/l/7ab992/32.png) [@lynx](https://discuss.elastic.co/u/lynx)\
**Post date:** [February 28, 2018, 5:44am UTC](https://discuss.elastic.co/t/error-starting-logstash-6-2-2/121779/1 "2018-02-28T05:44:51Z")

</div>

Dear All

I have installed logstash-6.2.2 and when trying to start the service with systemctl i get the below errors. Please advice

NameError: cannot link Java class org.apache.logging.log4j.Level needs Java 7 (java.lang.UnsupportedClassVersionError: org/apache/logging/log4j/Level  
get\_proxy\_or\_package\_under\_package at org/jruby/javasupport poxy\_or\_package\_under\_package at org/jruby/javasupport/JavaUtilities.java:54  
method\_missing at file:/usr/share/logstash/vendor/jruby/lib/jruby.jar!/jruby/java/java\_package\_module\_template.rb:14

My Env

* * *

Linux 3.10.0-514.16.1.el7.x86\_64 #1 SMP Fri Mar 10 13:12:32 EST 2017 x86\_64 x86\_64 x86\_64 GNU/Linux

java version "1.8.0\_161"  
Java(TM) SE Runtime Environment (build 1.8.0\_161-b12)  
Java HotSpot(TM) 64-Bit Server VM (build 25.161-b12, mixed mode)

* * *

---

<div class="post-metadata">

**Author:** ![wwalker](https://avatars.discourse-cdn.com/v4/letter/w/43a26b/32.png) [@wwalker](https://discuss.elastic.co/u/wwalker)\
**Post date:** [February 28, 2018, 5:57am UTC](https://discuss.elastic.co/t/error-starting-logstash-6-2-2/121779/2 "2018-02-28T05:57:30Z")

</div>

Looks like you need a newer version of Java/Java JDK, not JRE.

---

<div class="post-metadata">

**Author:** ![lynx](https://avatars.discourse-cdn.com/v4/letter/l/7ab992/32.png) [@lynx](https://discuss.elastic.co/u/lynx)\
**Post date:** [February 28, 2018, 11:17am UTC](https://discuss.elastic.co/t/error-starting-logstash-6-2-2/121779/3 "2018-02-28T11:17:07Z")

</div>

Thanks a lot Walker, i installed JDK and it started working.

---

<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 28, 2018, 11:17am UTC](https://discuss.elastic.co/t/error-starting-logstash-6-2-2/121779/4 "2018-03-28T11:17:25Z")

</div>

This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.