An optional component of syslog-ng configuration is filter creation. Filters can be used to pick log entries from defined sources with the possible intent of sending selected log entries to different destinations.
| Example 7.1. Selecting log messages from Postfix using filter |
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The following is a trivial filter to select log messages coming from Postfix: filter f_postfix{program(“postfix”);}; |
Filters can use regular expressions in a match criteria and a number of other criteria as well. For a complete list of criteria, see Section 7.1.4, Filters. Due to the flexible nature of filters, it is almost impossible to create a usable GUI to interface them. Therefore, the tab of the System logging component is quite simple.
For further information on possible filters, see Appendix C, Further readings.
Published on May 30, 2024
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