When I tried to use regular expressions in preprocessing form, I found that Zabbix could not find the second occurrence (second escape sequence) of the regular expression.
Example (file monitoring):
My regular expr is like:
Previously, I checked the functionality of the regular expression on the site regex 101.com
After that I made this one:
and it's OK (nice), but when I'm trying to make something like this (using \2 for finding second occurrence) :
Zabbix app tells me that it fails on it step...
On Zabbix off website page: https://www.zabbix.com/documentation/current/manual/config/items/preprocessing
Where am I wrong? I ask for your help.