Suppress duplicate SSL certificate expiry alerts across multiple hosts

[xexillia]

Hi everyone,

I'm working with Zabbix 7.0 and facing a challenge with trigger floods when the same SSL certificate is used across multiple hosts.

For example, I have a trigger like this:

last(/VM_NAME/ssl_certificate_[DOMAIN_NAME.COM]) < {$WARNING}

When the certificate is about to expire, this trigger fires on 50 different hosts at the same time, creating 50 separate alerts. I'd like to avoid showing all of them on the dashboard. Ideally, I want to display only one alert for this situation.

I tried using Event Correlation, but the problem is that the triggers are constantly active, so the correlation doesn’t really help.

Is there any way I can suppress duplicate alerts like this and show just one on the dashboard when the same certificate is expiring on multiple hosts?

Thanks in advance!