Comments (1)
stdweird
commented on July 20, 2024
For future reference: the bug is that UNIXPATH has no +, and the above grok pattern makes logstash hang using following input data:
uid:1234 sid:5678 tty:(none) cwd:/som/path/long/long/long/++/mor/long/path/anonymized/file filename:/bin/cut: cut -d. -f2
The same issue occurs if eg the cwd has a space or something. switching from UNIXPATH to DATA fixed the issue.
Tips for the logstash people: it took me half a day to get the relevant message, and 20 minutes to figure what was wrong with the pattern.
- support a timeout and when the timeout is hit log the message
- if no timeout, provide a way to dump the event queue e.g. via a signal, so when logstash hangs, we get the messages involved.
from logstash-filter-grok.
Related Issues (20)
- Allow grok pattern to be passed in as a parameter HOT 3
- Memory leak on 5.x
- Ability to auto-sort match options by frequency of match HOT 1
- getting values as an array HOT 1
- remove_field not working HOT 2
- "Prefix" functionality for grok HOT 4
- Track number of failed matches when using multiple pattern per field
- Warn when patterns don't have anchors HOT 1
- Significant Performance Regression using Jruby Timeouts HOT 8
- Implement ECS-Compatibility Mode HOT 4
- Logstash pipeline to remove passwords from log data HOT 1
- Using event fileds in configuration options HOT 1
- pure ruby regexp <capture:int> coercion does not work
- captures with same name won't coerce properly
- Logstash for iis SMTP
- Incoherent behavior of field references with overwrite
- [Test Failure] Syslog grok tests are failing on Logstash 8.x
- Behaviour when pattern writes to same input field (without "overwrite" option) HOT 1
- Add property to limit backtracking
- Regression on grok is case of match failure HOT 4
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from logstash-filter-grok.