Release Notes for Zabbix 3.0.20

Zabbix Team is pleased to announce the availability of Zabbix 3.0.20.

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 3.0.20. Download it from download.

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

Bug Fixes

ZBX-14548 Fixed the disk usage counters reading for ESX/ESXi hosts
ZBX-9236 Fixed timeselector period used to select 'all' values of particular item
ZBX-13393 Fixed agent compilation error on AlphaServer Tru64 5.1B
ZBX-14566 Fixed possible data loss due to MariaDB server restart
ZBX-13010 Fixed crash of poller processes in ODBC checks, simplified code
ZBX-14491 Fixed link "show value mappings", which leads to no permission page
ZBX-12380 Improved function parameter parsing for trigger functions
ZBX-14432 Removed redundant code in event details screen
ZBX-14410 Improved error message handling in zbx_function_find()
ZBX-12104 Added limit ZBX_HISTORY_PERIOD for {ITEM.VALUE} macro resolving in trigger name
ZBX-14402 Fixed internal item parameter that does not match documentation

Installation and Upgrade Notes


See Zabbix documentation for full details.


See Upgrade procedure for upgrade options and instructions. For version specific upgrade notes, see Upgrade notes for 3.0.20.

Commercial support

Zabbix Company provides a full range of Professional Services. We also provide trouble-free Upgrade Service for easy migration from earlier versions of Zabbix. Please Contact sales for pricing and more details.


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