In this article I will explain to you how to go from version 7.2 of Zabbix to version 7.4 which released in early July 2025.
This article is mainly intended for those who deployed Zabbix using Docker and Docker composed by following the following tutorial: Zabbix: Supervise your infrastructure - Installation and configuration with Docke r
Following changes in communication between the different services in the container, you must adapt the configuration in variable files, otherwise the Front-end server will not communicate with the Zabbix server.
Edit the following file: env_vars/.env_srv
sudo nano env_vars/.env_srv
Decound the following line and put the wearing of the Zabbix server:
ZBX_NODEADDRESSPORT=10051
Do the same with the following line:
ZBX_NODEADDRESS=zabbix-server-mysql
Then publisher the following file: env_vars/./env_web
sudo nano env_vars/./env_web
Decound the following line:
ZBX_SERVER_HOST=zabbix-server-mysql
Then you can update Zabbix in verse 7.4.
Remember to make a backup or minimum on a VM a snapshot so that you can return to version 7.2 easily.
The regression of the version by editing the image will not be possible because version 7.4 updates the database.
