Ubuntu 22.04

Hi ZabbixDev Teams,
currently (Zabbix 7.0) in the official templates "Linux by Zabbix agent active" and "Windows by Zabbix agent active" have trigger which is using the "fuzzytime" function but as I know, but maybe I'm wrong, this function it's not working as expeted using "Active Checks". It's corect?
Can you give us feedback?
Thanks

Hello! Yes, the fuzzytime() function will only work correctly with passive checks, as stated in documentation. Because of how it works: it compares the value (timestamp) with the timestamp of retrieval of that value. And in case with active agent, since it's the agent that creates the timestamp of the value retrieval, both timestamps will always be the same and even if the agent host time is not in sync, the trigger will never fire.

The trigger for active templates was most likely added by mistake and has been removed in ZBXNEXT-6445.

If you really need such trigger for active agents, you could come up with something like this:

1. Create dependent item from the "System local time" item, which will store the actual time difference.
2. Use JS preprocessing in this item to get the current time and calculate the difference, for example:

return Math.abs(Math.floor(Date.now()/1000 - value)); 

3. Create a trigger for this metric, for example:

min(/template/time.diff,5m)>{$SYSTEM.FUZZYTIME.MAX} 

Although, after discussing the possible solution with the DEV team, it was decided to leave the fuzzytime trigger only in passive agent templates and avoid using such workarounds.

Hi Denis,
thanks so much for the reply and thanks for the possible workaround.

However, the decision to remove the trigger from the Zabbix Agent Active template, for me, it's not correct.

For me, Zabbix must provide a "good User Experience" without such inconsistency between templates.

Please leave the Trigger, maybe using the proposed workaround.

Thanks so much

dimitri.bellini, the proposed workaround will work in many cases but not in all. Specifically, if the data send is delayed by some reason one can get very confusing false positives.

Kalimulin Thank you for the reply and I can understand it "but" this Trigger it's very helpful and provide a fast feedback on "Not sync Time".
If you can't use the workaround we still need a viable option for Zabbix Agent Active, please try to think about it.

Thanks so much & Good work!