# Question about multiline

**URL:** <https://discuss.elastic.co/t/question-about-multiline/188134>\
**Category:** Logstash\
**Created:** [June 29, 2019, 10:25am UTC](https://discuss.elastic.co/t/question-about-multiline/188134 "2019-06-29T10:25:18Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![akumo](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/akumo/32/42548_2.png) [@akumo](https://discuss.elastic.co/u/akumo)\
**Post date:** [June 29, 2019, 10:25am UTC](https://discuss.elastic.co/t/question-about-multiline/188134/1 "2019-06-29T10:25:18Z")

</div>

Hi. I try to read multiline log from this script.

input {  
file {  
path =\> "/datatest/sample"  
start\_position =\> "beginning"  
codec =\> multiline {  
pattern =\> "^%{TIMESTAMP\_ISO8601}"  
what =\> "previous"  
}  
}  
}  
filter {  
mutate {  
gsub =\> ["message", "r", ""]  
}  
grok {  
match =\> { "message" =\> "%{TIMESTAMP\_ISO8601:logdate} %{GREEDYDATA:message}" }  
}  
date {  
match =\> ["logdate" , ISO8601]  
}  
}  
output {  
stdout {}  
}

My sample data is

* * *

2018-09-24-21.00.01.932752+420 I1A1576 LEVEL: Event  
PID : 2294076 TID : 1 PROC : db2diag  
INSTANCE: inst1 NODE : 000  
HOSTNAME: svr1  
EDUID : 1  
FUNCTION: DB2 UDB, RAS/PD component, pdLogInternal, probe:120  
START : New Diagnostic Log file  
DATA #1 : Build Level, 232 bytes  
Instance "rmsinpr1" uses "64" bits and DB2 code release "SQL10057"  
with level identifier "0608010E".  
Informational tokens are "DB2 v10.5.0.7", "s151221", "IP23949", Fix Pack "7".  
DATA #2 : System Info, 416 bytes  
System: AIX sermsdb02 1 7 00FA14E04C00  
CPU: total:512 online:128 Cores per socket:10 Threading degree per core:8 SIMD:Y  
Physical Memory(MB): total:102400 free:8870  
Virtual Memory(MB): total:110592 free:16814  
Swap Memory(MB): total:8192 free:7944  
Kernel Params: msgMaxMessageSize:4194304 msgMaxQueueIDs:1048576  
msgMaxQueueSize:4194304 shmMax:35184372088832 shmMin:1  
shmIDs:1048576 shmSegments:268435456 semIDs:1048576  
semNumPerID:65535 semOps:1024 semUndoPerProcess:1024  
semMaxVal:32767 semAdjustOnExit:16384  
Cur cpu time limit (seconds) = 0x7FFFFFFFFFFFFFFF  
Cur file size limit (bytes) = 0x7FFFFFFFFFFFFFFF  
Cur data size (bytes) = 0x7FFFFFFFFFFFFFFF  
Cur stack size (bytes) = 0x0000000002000000  
Cur core size (bytes) = 0x7FFFFFFFFFFFFFFF  
Cur memory size (bytes) = 0x7FFFFFFFFFFFFFFF  
nofiles (descriptors) = 0x7FFFFFFFFFFFFFFF

Information in this record is only valid at the time when this file was  
created (see this record's time stamp)

## 2018-09-24-21.00.01.949833+420 I1578A395 LEVEL: Event PID : 2294076 TID : 1 PROC : db2diag INSTANCE: inst1 NODE : 000 HOSTNAME: svr1 EDUID : 1 FUNCTION: DB2 UDB, RAS/PD component, pdDiagArchiveDiagnosticLog, probe:88 CREATE : DB2DIAG.LOG ARCHIVE : /db2dump/db2diag.log\_2018-09-24-21.00.01 : success IMPACT : Potential

Out i got -\>

{  
"@version" =\> "1",  
"path" =\> "/datatest/sample",  
"message" =\> "PID : 2294076 TID : 1 PROC : db2diag",  
"host" =\> "logstash",  
"@timestamp" =\> 2019-06-29T10:11:58.593Z,  
"tags" =\> [  
[0] "\_grokparsefailure"  
]  
}  
{  
"@version" =\> "1",  
"path" =\> "/datatest/sample",  
"message" =\> "Physical Memoy(MB): total:102400 fee:8870",  
"host" =\> "logstash",  
"@timestamp" =\> 2019-06-29T10:11:58.602Z,  
"tags" =\> [  
[0] "\_grokparsefailure"  
]  
}  
{  
"@version" =\> "1",  
"path" =\> "/datatest/sample",  
"message" =\> "Swap Memoy(MB): total:8192 fee:7944",  
"host" =\> "logstash",  
"@timestamp" =\> 2019-06-29T10:11:58.603Z,  
"tags" =\> [  
[0] "\_grokparsefailure"  
]  
}

The error were.

1. First line was missing.
2. grokparse fail.

What is my mistake ? Need help.

Thank you.

---

<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:** [July 27, 2019, 10:28am UTC](https://discuss.elastic.co/t/question-about-multiline/188134/2 "2019-07-27T10:28:04Z")

</div>

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