# Grok Pattern for Multiline log pattern

**URL:** <https://discuss.elastic.co/t/grok-pattern-for-multiline-log-pattern/177007>\
**Category:** Logstash\
**Created:** [April 16, 2019, 6:58am UTC](https://discuss.elastic.co/t/grok-pattern-for-multiline-log-pattern/177007 "2019-04-16T06:58:45Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![ashishm](https://avatars.discourse-cdn.com/v4/letter/a/48db29/32.png) [@ashishm](https://discuss.elastic.co/u/ashishm)\
**Post date:** [April 16, 2019, 6:58am UTC](https://discuss.elastic.co/t/grok-pattern-for-multiline-log-pattern/177007/1 "2019-04-16T06:58:45Z")

</div>

from the below log line, I want to extract java.lang.exception as I need to show count of every exception in my kibana board

[28.03.19 05:44:47:954 MEZ] 0000085d SystemOut O 28 Mär 2019 05:44:47:953 [ERROR] [Server\_1] Invalid request. The request must only come from a valid session.  
java.lang.Exception  
at ……………………………

for that I have created below logstash configuration file

input {  
beats {  
port =\> 5044  
}  
file {  
path =\>["E:\logfiles.Live\*.log"]  
start\_position =\> "beginning"   
codec =\> multiline {  
pattern =\> "^%["  
negate =\> true  
what =\> "previous"  
}  
}

}

filter {

grok {

```
patterns_dir => ["E:\pattern"]

match => [ "errormessage",
           "\[(?<dateTime>%{MONTHDAY}.%{MONTHNUM}.%{YEAR} %{TIME:time} MEZ)\]%{SPACE}%{DATA:thread}\s%{WORD}\s*%{SPACE}%{USER}%{SPACE}%{MONTHDAY} %{MONTH} %{YEAR} %{TIME}%{SPACE}\[%{LOGLEVEL:loglevel}\]%{SPACE}\[%{USERNAME:Server}\]%{SPACE}\[%{SPACE}\](?:(\[?.*\]?))%{TestException:Java_Exception}(?:(\[?.*\]?))%{GREEDYDATA:messagetext}",
		   "msglog",
		   "\[(?<dateTime>%{MONTHDAY}.%{MONTHNUM}.%{YEAR} %{TIME:time} MEZ)\]%{SPACE}%{DATA:thread}\s%{WORD}\s*%{SPACE}%{USER}%{SPACE}%{MONTHDAY} %{MONTH} %{YEAR} %{TIME}%{SPACE}\[%{LOGLEVEL:loglevel}\]%{SPACE}\[%{USERNAME:Server}\]%{SPACE}\[%{SPACE}\]%{GREEDYDATA:messagetext}"
         ]

```

}

date {  
match =\> ["timestamp" , "dd.mm.yy HH:mm:ss:SSS"]  
}  
}  
output {  
elasticsearch {  
# hosts =\> localhost  
}  
stdout {}  
}

In patterns folder I have created patterns.txt file with the below content  
TestException java?.[.\w]+Exception

But in message field I am getting complete log message ,field Java\_Exception is not created.

it is working fine on [http://grokconstructor.appspot.com/do/match#result](http://grokconstructor.appspot.com/do/match#result) but it doesn't work when I run using config file

Any idea how to resolve this issue?

---

<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:** [May 14, 2019, 6:58am UTC](https://discuss.elastic.co/t/grok-pattern-for-multiline-log-pattern/177007/2 "2019-05-14T06:58:47Z")

</div>

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