How can I make UserParameter=sync_error[*] return empty?

Question

Zabbix

Good afternoon, I wrote a script that returns the last synchronization error from the database to Zabix as a string, if there are no errors, it returns an empty string.

I set up an item in Zabix:

Type of information=Log
Applications=Filesystem

Now there are a lot of empty lines in history, I would like to remove them from there. How to make zabix ignore empty line in script response?

Answer 1

in general dug found two ways.
1. On the monitored server, run the verification script with cron and add synchronization errors to the log, configure the zabix server to the log file.
2. Try using traper https://www.zabbix.com/documentation/4.0/ru/manual...