Release Notes for Zabbix 5.2.1rc3

Zabbix Team is pleased to announce the availability of Zabbix 5.2.1rc3.

Zabbix is an enterprise-class open source distributed monitoring solution. Zabbix is released under the GPL, thus it is free of charge for both commercial and non-commercial use. A complete text of the license is available at

This document contains the release notes for Zabbix 5.2.1rc3. Download it from download.

The following sections describe the release in details and provide late-breaking or other information that supplements its main documentation.

New Features and Improvements

ZBXNEXT-6236 Added template "Apache Kafka by JMX" Templates
ZBXNEXT-6247 Improved LLD rule processing after reconnecting to proxy Server
ZBXNEXT-6201 Added "Template DB Apache Cassandra by JMX" Templates

Bug Fixes

ZBX-18608 Fixed refresh of monitoring problems and monitoring hosts pages when refresh interval is set to zero Frontend
ZBX-18601 Fixed dashboard widget to be updated continuously when 'No refresh' interval is specified Frontend
ZBX-18591 Fixed active Zabbix Agent v2 5.0 doesn't work with Server v5.2.0 Agent
ZBX-18185 Fixed compilation error on Solaris 10 Agent
ZBX-18538 Fixed API role.update rules validation API
ZBX-18317 Fixed fatal error when updating only discovered triggers and their properties API
ZBX-18163 Fixed being able to delete interfaces on discovered hosts API
ZBX-18505 Fixed build failing to compile for Zabbix agent 2 on ARM/v7 and ARM/v6 Agent
ZBX-18380 Changed trigger of the net.if.speed item in the Windows network module template Templates
ZBX-18494 Removed recovery mode NONE in trigger "Operating system description has changed" Templates
ZBX-18546 Fixed "Something impossible" bug in server and proxy when diaginfo is requested Proxy Server
ZBX-18058 Updated the list of item keys and their descriptions Frontend
ZBX-18531 Fixed template "Ceph by Zabbix Agent2" pool discovery Templates
ZBX-18476 Changed Fan, Temperature, Voltage LLD rules in Template Net Arista Templates
ZBX-16155 Fixed "Template Net TP-LINK" readme Templates

Installation and Upgrade Notes


See Zabbix指导手册。 for full details.


See 升级指南 for upgrade options and instructions. For version specific upgrade notes, see Upgrade notes for 5.2.1.

Commercial support

Zabbix Company provides a full range of Professional Services. We also provide trouble-free 升级服务 for easy migration from earlier versions of Zabbix. Please 联系我们 for pricing and more details.


Zabbix 5.2 Manual