Reducing emails when zabbix server has rebooted or lost network connection

[Gijs007]

Whenever we rebooted our Zabbix server (to automatically install operating system updates), we keep getting lots of emails from Zabbix.

Most emails are regarding the Zabbix services (timer, discover, trapper, etc) are using a lot of CPU usage.
As well as an email about the database being down.

We also get unreachable emails from each server which is being monitored.
What can be done to resolve this issue? I'd like to see an option to disable emails in the first 15 minutes after Zabbix was restarted.

Additionally it would be helpful if we can make a dependency on the network connection of the Zabbix server.
e.g. Zabbix server can't reach the internet, then we don't get emails about Zabbix agents unreachable on monitored servers.

[nijazse]

Create Maintenance period and put Zabbix server into Hosts & Groups

[Gijs007]

Create Maintenance period and put Zabbix server into Hosts & Groups

Thanks for the suggestion.
Unfortunately this is not an option since in our case the system may automatically reboot.

[tgrissom]

Trigger dependancies

Could you implement trigger dependencies to address this?

E.G.

Trigger_1: Zabbix server uptime < 5 minutes
Set the rest of the triggers to be dependent on this trigger_1.

So when Zabbix reboots a bunch of noise triggers are initiated. Those triggers first check the status of dependent triggers. In this case if trigger_1 is in a "Problem" state then the triggers dependant on it don't fire.

After 5 minutes, trigger_1 moves to an 'OK' state and if the conditions for the other triggers still exist then the trigger fires.

I must qualify that I have NOT done this myself. This is based on some googling and information conveyed at the Zabbix Certified Profession Training course I took this fall.