These notes are for upgrading from Zabbix 4.4.x to Zabbix 5.0.0. All notes are grouped into:
Critical- the most critical information related to the upgrade process and the changes in Zabbix functionality
Informational- all remaining information describing the changes in Zabbix functionality
It is possible to upgrade to Zabbix 5.0.0 from versions before Zabbix 4.4.0. See the upgrade procedure section for all relevant information about upgrading from previous Zabbix versions.
The IBM DB2 database is no longer supported by Zabbix.
The EnableRemoteCommands parameter is now deprecated. Remote commands are still disabled by default, but in the new configuration files that is expressed by using the new DenyKey parameter (
DenyKey=system.run[*]). Remote commands can be enabled by removing (or commenting out)
The maximum allowed length of an item key has been raised from 256 to 2048 characters.