Trigger to monitor log growth

[hippyrivet]

Hi,

First I'm new to zabbix.

I want to create a trigger that alerts if a log file grows more than 100Mb (or 100000000 bytes) in the previous 60 minutes.

I am unable to create the trigger though: Configuration > Hosts > Select host > triggers > create new trigger

Then entering the below:

{host:vfs.file.size['/var/log/name.log'].last(0,3600)}-{host:vfs.file.size['/var/log/name.log '].prev(0)}>100000000

Gives me:

Incorrect item key "vfs.file.size['/var/log/dpx/dpx.log']" provided for trigger expression on "host".

Any help appreciated, thanks.
Hippy

[tchjts1]

I do something very similar, although I do it through LLD because the directory contains rotational logs with dynamic log names.

Anyway, this is my trigger expression if a log grows over 60M in the last 1 hour

({Server_Name:vfs.file.size[C:\PathToLog\LogFileName].last(0)} - {Server_Name:vfs.file.size[C\PathToLog\LogFileName].last(0,1h)})>60M