# Logstash Configuration Issues
**URL:** https://discuss.elastic.co/t/logstash-configuration-issues/116062
**Category:** Logstash
**Created:** [January 18, 2018, 1:29pm UTC](https://discuss.elastic.co/t/logstash-configuration-issues/116062 "2018-01-18T13:29:20Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@Bheeshma](https://discuss.elastic.co/u/Bheeshma)
#### Post date: [January 18, 2018, 1:29pm UTC](https://discuss.elastic.co/t/logstash-configuration-issues/116062/1 "2018-01-18T13:29:21Z")
Hi,
I am new to this forum, trying to learn the ELK stack on my own . Thanks to ELK documentation on the website uploaded.
i was able to install and configure Elastic Search, Kibana softwares however when trying to configure Logstash, I am stuck at this and need your help on how to overcome this please.
After installing logstash, I configured \*.conf with the following code and tried to run the command : ./logstash but it is giving lots of errors.
logstash.confg
input { beats {port =\> 5044 } }
output {
elasticsearch { hosts =\> ["localhost:9200"] }
stdout { codec =\> rubydebug }
}
Errors:
Sending Logstash's logs to /home/oracle/logstash-6.1.1/logs which is now configured via log4j2.properties
2018-01-18 08:21:07,378 main ERROR Unable to invoke factory method in class class org.apache.logging.log4j.core.layout.JsonLayout for element JSONLayout. java.lang.reflect.InvocationTargetException
Caused by: java.lang.NoSuchMethodError: com.fasterxml.jackson.databind.ser.impl.SimpleFilterProvider.addFilter(Ljava/lang/String;Lcom/fasterxml/jackson/databind/ser/impl/SimpleBeanPropertyFilter;)
Lcom/fasterxml/jackson/databind/ser/impl/SimpleFilterProvider;
2018-01-18 08:21:07,408 main ERROR Unable to invoke factory method in class class org.apache.logging.log4j.core.layout.JsonLayout for element JSONLayout. java.lang.reflect.InvocationTargetException
[2018-01-18T08:21:09,957][ERROR][logstash.agent] An exception happened when converging configuration {:exception=\>RuntimeError, :message=\>"Could not fetch the configuration, message: Failed to coerce value to Integer.
Received 1 (actually defaults to number of CPUs) (String)", :backtrace=\>["/home/oracle/logstash-6.1.1/logstash-core/lib/logstash/agent.rb:155:in `converge\_state\_and\_update'", "/home/oracle/logstash-6.1.1/logstash-
core/lib/logstash/agent.rb:90:in `execute'", "/home/oracle/logstash-6.1.1/logstash-core/lib/logstash/runner.rb:343:in`block in execute'", "/home/oracle/logstash-6.1.1/vendor/bundle/jruby/2.3.0/gems/stud-0.0.23/lib/stud/task.rb:24:in `block in
initialize'"]}
[2018-01-18T08:21:10,210][INFO][logstash.agent] Successfully started Logstash API endpoint {:port=\>9600}
My Apologies for this huge error log, could you please help me overcoming these errors ?
Kind Regards
Bheeshma.
---
### Author:  [@Bheeshma](https://discuss.elastic.co/u/Bheeshma)
#### Post date: [February 6, 2018, 3:37pm UTC](https://discuss.elastic.co/t/logstash-configuration-issues/116062/2 "2018-02-06T15:37:39Z")
Dear Experts,
I have given several attempts to make the logstash reading the file resides on the same server but ending up with several errors which I have no clue at all what they are meant to be
Here is the logstash.conf file contents from the location:
input {
file {
path =\> "/home/oracle/Downloads/App.LOG"
type =\> "file"
}
}
output {
elasticsearch
{
hosts =\> ["localhost:9600"]
index =\> "metrics-prod-%{+YYYY.MM}"
}
stdout { codec =\> rubydebug }
}
Here is the logstash.yml file contents from the location:
path.data: /home/oracle/Downloads/
path.config: /etc/logstash/conf.d/\*.conf
path.logs: /home/oracle/logstash-6.1.1/logs
After running the following command - ./logstash -f /etc/logstash/conf.d/logstash.conf
its just a snippet of the error log:
[2018-02-06T10:27:52,703][ERROR][logstash.agent] An exception happened when converging configuration {:exception=\>LogStash::Error, :message=\>"Don't know how to handle `Java::JavaLang::NoClassDefFoundError` for `LogStash::PipelineAction::Create/pipeline_id:main`", :backtrace=\>["/home/oracle/logstash-6.1.1/logstash-core/lib/logstash/converge\_result.rb:27:in `create'", "/home/oracle/logstash-6.1.1/logstash-core/lib/logstash/converge_result.rb:67:in`add'", "/home/oracle/logstash-6.1.1/logstash-core/lib/logstash/agent.rb:347:in `block in converge_state'", "/home/oracle/logstash-6.1.1/logstash-core/lib/logstash/agent.rb:141:in`with\_pipelines'", "/home/oracle/logstash-6.1.1/logstash-core/lib/logstash/agent.rb:332:in `block in converge_state'", "org/jruby/RubyArray.java:1734:in`each'", "/home/oracle/logstash-6.1.1/logstash-core/lib/logstash/agent.rb:319:in `converge_state'", "/home/oracle/logstash-6.1.1/logstash-core/lib/logstash/agent.rb:166:in`block in converge\_state\_and\_update'", "/home/oracle/logstash-6.1.1/logstash-core/lib/logstash/agent.rb:141:in `with_pipelines'", "/home/oracle/logstash-6.1.1/logstash-core/lib/logstash/agent.rb:164:in`converge\_state\_and\_update'", "/home/oracle/logstash-6.1.1/logstash-core/lib/logstash/agent.rb:90:in `execute'", "/home/oracle/logstash-6.1.1/logstash-core/lib/logstash/runner.rb:343:in`block in execute'", "/home/oracle/logstash-6.1.1/vendor/bundle/jruby/2.3.0/gems/stud-0.0.23/lib/stud/task.rb:24:in `block in initialize'"]}
Please, kindly advise.
Regards
Bheeshma.
---
### Author:  [@Bheeshma](https://discuss.elastic.co/u/Bheeshma)
#### Post date: [February 6, 2018, 4:28pm UTC](https://discuss.elastic.co/t/logstash-configuration-issues/116062/3 "2018-02-06T16:28:11Z")
When I ran the following command, I got the below message..seems Logstash configuration issues but now sure how to over come this, please advise.
[oracle@server logstash-6.1.1]$ bin/logstash --path.settings /etc/logstash -f /etc/logstash/conf.d/logstash.conf --config.test\_and\_exit
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 /etc/logstash/log4j2.properties. Using default config which logs errors to the console
Unhandled Java exception: java.lang.NoClassDefFoundError
java.lang.NoClassDefFoundError: null
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [March 6, 2018, 4:28pm UTC](https://discuss.elastic.co/t/logstash-configuration-issues/116062/4 "2018-03-06T16:28:22Z")
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