Advice - Zabbix Upgrading

[the.monitor]

Hi all,

I'm going to be running our upgrade from 3.2 to 4.0 within the next month and i'd like to ask for peoples experience on timescales.

I understand from documentation that the database schema updates may take a considerable while.

In terms of hardware;

Zabbix is running on a Pacemaker cluster made up of 2x Dell R630s

And our Zabbix Database is on a galera cluster ~600GB

I'm monitoring ~32000 hosts


How much downtime should I realistically be planing for?

[HaveDill]

Honestly it depends on the upgrade...i had some in the past (v2.x) that took hours and hours with a ~1TB database. I've never had it take multiple days though. Check the zabbix server logs after teh upgrade, and you will see the % progress being logged.

Make sure you update the webfront as well. Or you will get an error on the frontend stating the DB version is in a mismatch with it afterwards