Element: patterns container
Location
/ patterndb / ruleset / patterns
Description
A container element. A <patterns> element may contain any number of <pattern> elements.
Attributes
N/A
Children
-
pattern: The name of the application — syslog-ng OSE matches this value to the
PROGRAM
header of the syslog message to find the rulesets applicable to the syslog message.Specifying multiple patterns is useful if two or more applications have different names (that is, different
PROGRAM
fields), but otherwise send identical log messages.It is not necessary to use multiple patterns if only the end of the
PROGRAM
fields is different, use only the beginning of thePROGRAM
field as the pattern. For example, the Postfix email server sends messages using different process names, but all of them begin with the postfix string.You can also use parsers in the program pattern if needed, and use the parsed results later. For example: <pattern>postfix\@ESTRING:.postfix.component:[@</pattern>
NOTE: If the <pattern> element of a ruleset is not specified, syslog-ng OSE will use this ruleset as a fallback ruleset: it will apply the ruleset to messages that have an empty
PROGRAM
header, or if none of the program patterns matched thePROGRAM
header of the incoming message.
Example
<patterns>
<pattern>firstapplication</pattern>
<pattern>otherapplication</pattern>
</patterns>
Using parsers in the program pattern:
<pattern>postfix@ESTRING:.postfix.component:[@</pattern>