Release Notes for Zabbix 3.0.21

Zabbix Team is pleased to announce the availability of Zabbix 3.0.21.

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 3.0.21. 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-14677 Fixed vmware performance counter retrieval on installations with large number of datastores Proxy Server
ZBX-12293 Renamed trigger functions by adding function name at the beginning and removing the operator and "N" and placing operator in a separate field allowing two new operators "<=" and ">=" for selection Frontend
ZBX-14593 Fixed error message for invalid vmware endpoint Proxy Server
ZBX-14614 Fixed trigger dependency link to the template instead of the host during the discovery action Server
ZBX-372 Added "zone" parameter to proc.num[] item for Solaris Agent
ZBX-14410 Fixed output of information about the error for expressions with functions of triggers or calculated items Server
ZBX-14433 Fixed several problems in displaying of X axis on the graphs Frontend

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 3.0.21.

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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