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logstashlogstash-grok

Need help in writing the grok pattern

Can anybody help me writing the grok pattern for the following log line

07-Aug-2017|00:35:08,748 DEBUG [hostname] [Some WebApp Name] [6.9] [127.0.0.1] [1277]

I am not able to find a way to accomodate '[' & ']' in the grok patterns.

Any help will be appreciated.

Solution

  • This should match your pattern: 

    %{MONTHDAY}-%{MONTH}-%{YEAR}\|%{TIME} %{LOGLEVEL} \[%{WORD} ] \[%{DATA}] \[%{NUMBER}] \[%{IP}] \[%{NUMBER}]

    As you can see squared bracket are escaped with backslashes like this: \[ and \]

    You might want to add semantic to it like so:

    %{MONTHDAY:day}-%{MONTH:month}-%{YEAR:year}\|%{TIME:time} %{LOGLEVEL:loglevel} \[%{WORD:hostname} ] \[%{DATA:webapp}] \[%{NUMBER:somenumber}] \[%{IP:userip}] \[%{NUMBER:anothernumber}]

    You can also test your grok patterns online e.g. here.