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Questions tagged [logstash-grok]

Grok is an abstraction on top of regular expressions to allow easy parsing of unstructured text into structured and queryable form.

Parse arbitrary text and structure it.

Grok is a great way to parse unstructured log data into something structured and queryable.

This tool is perfect for syslog logs, apache and other webserver logs, mysql logs, and in general, any log format that is generally written for humans and not computer consumption.

Logstash ships with about 120 patterns by default. You can find them here: https://github.com/logstash-plugins/logstash-patterns-core/tree/master/patterns. You can add your own trivially. (See the patterns_dir setting)

If you need help building patterns to match your logs, you will find at:

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Input data from CSV file to logstash

I have a csv file, with the following headers: "PacketId","MACAddress","Date","PacketLength","SourceIP","SourcePort","DestIP","DestPort" I want to index the data to ElasticSearch using LogStash, and not able to write the filter for the same.…
ATP
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How to create an alias on two indexes with logstash?

In the cluster that I am working on there are two main indexes, let's say indexA and indexB but these two indexes are indexed each day so normaly I have indexA-{+YYYY.MM.dd} and indexB-{+YYYY.MM.dd}. What I want is to have one alias that gathers…
mehmetozer
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Getting Logstash _grokparsefailure though Grok Debugger throws no errors

I try to parse Check Point firewall Syslog logs with logstash and grok. Example of a log entry: <190>2015 Mar 19 12:40:55 fw1 <60031> User admin failed to login (wrong authentication) (Source IP:123.123.123.123 Via:HTTP) I use this…
Michael
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Logstash Multiline with Syslog

Have some difficulties with Logstash and multiline working together I am using the Logspout container that forwards all stdout log entries as syslog to logstash. This is the final content that logstash receives. Here are multiple lines that should…
Vad1mo
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Logstash: Parsing apache access log's timestamp leads to parse failure

I want to parse common apache access log files which is this: ::1 - - [02/Mar/2014:15:36:43 +0100] "GET /index.php HTTP/1.1" 200 3133 This is my filter section: grok { match => ["message", "%{COMMONAPACHELOG}"] } date { match =>…
tester
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Logstash: Nested grok searches? Parsing a field into multiple fields?

I have log entries that look like this... 2014-02-25 00:00:03,936 INFO - something happened...bla bla bla 2014-02-25 00:00:03,952 INFO - ***Request Completed*** [ 78.002] mS [http://cloud.mydomain.local/schedule/search?param=45] 2014-02-25…
Tony
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Using the Grok Debugger to test a Logstash filter for Apache errors

I am trying to understand using grok to filter my apache error logs. My error log file looks like: [Thu Feb 27 13:22:44 2014] [error] [client 10.110.64.71] script not found or unable to stat: /var/www/cgi-bin/php4 How can I use grok to filter that?…
Gabriel
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Logstash grok filter to tag bounced messages

Summary: I've a few outbound smtp servers and centralized mail logs via rsyslog to a server on which i'm Using logstash, outputting to elasticsearch, searching with kibana. I would like to tag as "BOUNCED" for Postfix mail log entries…
tkorkunckaya
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Grok Patterns for SSSD Logs

I am trying to parse the SSSD Demon logs using Logstash grok patterns for better visibility log samples (Mon Nov 9 12:08:56 2020) [sssd[nss]] [client_recv] (0x0200): Client disconnected! (Mon Nov 9 12:08:56 2020) [sssd[nss]] [client_close_fn]…
Ajinkya
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Finding grok pattern for file with varying structure

I have a log file where not all the lines are in the same format. How do I find the correct grok pattern for such a file. [15:37:20:030|1] [TdmUtil.c: 1534:fnTDM_LoadLocalFoo] F_LAA : 1 [15:37:20:032|1] [TdmUtil.c: 1281:fnTDM_GetPreDef] …
Tony Stark
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How to Generate Grok Patterns automatically using LogMine

I am trying to generate GROK patterns automatically using LogMine Log sample: Error IGXL error [Slot 2, Chan 16, Site 0] HSDMPI:0217 : TSC3 Fifo Edge EG0-7 Underflow. Please check the timing programming. Edge events should be fired in the…
Rakesh TS
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Logstash Add field from grok filter

Is it possible to match a message to a new field in logstash using grok and mutate? Example log: "<30>Dec 19 11:37:56 7f87c507df2a[20103]: [INFO] 2018-12-19 16:37:56 _internal (MainThread): 192.168.0.6 - - [19/Dec/2018 16:37:56] \"\u001b[37mGET /…
Baily
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Cannot run logstsh on windows

I am trying to get the logs from logstash and send it to elasticsearch for visualising the logs using kibana but I am getting an error while running this code from logstash\bin directory logstash -f logstashpipline.conf The error says Error:…
glaltv
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Logstash create a new field based on existing field

I have data coming from database queries using jdbc input plugin and result from queries contains url field from which I want to extract a few properties. Example…
Michael Dz
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Logstash grok filter config for php monolog multi-line(stacktrace) logs

[2018-02-12 09:15:43] development.WARNING: home page [2018-02-12 09:15:43] development.INFO: home page [2018-02-12 10:22:50] development.WARNING: home page [2018-02-12 10:22:50] development.INFO: home page [2018-02-12 10:22:50]…
Sathishkumar Rakkiyasamy
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