Recovery trigger not working?

Question

Zabbix

In general, it should work if the file has more than 10 characters when the file is changed, it closes and reopens if the file has more than 10 characters.

zabbix version 5.0.6
Problem expression
{Zabbix server:vfs.file.contents[/opt/Cos/38.txt].strlen()}>10
Recovery expression
{Zabbix server:vfs.file.contents[/opt/Cos/ 38.txt].diff()}=1

Answer 1

I recommend you use diff vfs.file.cksum. vfs.file.contentslimited in size, and changes can occur somewhere at the end, for example - then the trigger will not work.