How to blacklist files with a wildcard in monitoring stanza?

[Ashwini008]

Hi,

I need to index  windows server logs and blacklist all the previous year logs.

Inputs.conf.

[monitor://E:\application\logs\server*]
disabled=0
sourcetype=_error_text
index=_error_file

Logs in the servers looks like below

I refered solunk doc and came up with this stanza but it says only the last filter will be applied. Does it mean only 2019 blacklist regex will be applied?

[monitor://E:\application\logs\server*]
disabled=0
sourcetype=_error_text
index=_error_file
blacklist.1=^server-2021-\d{2}-\d{2}
blacklist.2=^server-2020-\d{2}-\d{2}
blacklist.3=^server-2019-\d{2}-\d{2}

Please suggest.

[richgalloway · Accepted solution]

Monitor stanzas support a single blacklist setting.  That's why you get the message about only the last one being applied.  Contrast this with the blacklists for wineventlog stanzas.

Blacklists use regular expressions.  There is no concept in regex for "not this year" or "< 2023", etc.

I suggest using a whitelist for the current year, instead.  Something like this

whitelist = server-202[34]-\d\d-\d\d

will match files created this year and next (giving you time to update it at the end of 2023).