Release Notes for Zabbix 1.8.16

Zabbix Team is pleased to announce the availability of Zabbix 1.8.16.

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 1.8.16. Download it from download.

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

Fixes and minor improvements

ZBX-6034 fixed IPMI remote commands and scripts, possible poller and escalator crash Proxy Server
ZBX-5201 added handling of PerfCounter error PDH_CALC_NEGATIVE_DENOMINATOR Agent
ZBX-6097 fixed the ability to override LDAP configuration when calling user.login API
ZBX-5988 fixed memory leak in functions evaluate_LOGEVENTID(), evaluate_STR(); thanks to Takanori Suzuki for patch Proxy Server
ZBX-3754 fixed "Undefined variable" in the trigger expression constructor Frontend
ZBX-3038 fixed the trigger expression constructor to parse expressions created in log wizard Frontend
ZBX-2793 added possibility to add macros without an item in the trigger expression Frontend
ZBX-5896 fixed inserting OR condition the trigger expression constructor Frontend
ZBX-5833 fixed inserting a macro in the trigger expression constructor API Frontend
ZBX-4695 added support of simple check keys with user macros in the trigger expression Frontend
ZBX-5884 improved the trigger expression constructor to work with parentheses Frontend
ZBX-5814 fixed an incorrect error message when saving an illegal trigger expression API Frontend
ZBX-4247 fixed processing of trigger expression if item key contains another trigger expression string API Frontend
ZBX-2640 fixed some issues when creating and editing log triggers Frontend
ZBX-5803 fixed message initialization memory leak in IE7 Frontend
ZBX-5898 fixed Insert Macro button does not work in trigger constructor on IE7 and IE8 Frontend
ZBX-5822 fixed macro in trigger names for unixtime and other types of units API
ZBX-5697 fixed processing of external check parameters with the right square bracket Proxy Server
ZBX-5454 fixed encoding of long email subject line as required by RFC-2047; thanks to Jairo Eduardo Lopez Fuentes Nacarino Server
ZBX-5650 added more information about ProxyLocalBuffer parameter in the example configuration file Documentation
ZBX-4097 changed the "application", "host" and "group" parameters for item.get and trigger.get to be case sensitive API
ZBX-5514 fixed SQL query in get_min_itemclock_by_itemid function Frontend
ZBX-5505 fixed incorrect SQL query building using limits API
ZBX-5512 fixed undefined index in screens API
ZBX-5383 maximum data size accepted via Zabbix communication protocol is limited to 128 MB Agent Proxy Server
ZBX-5450 added support of "KMGTsmhdw" suffixes in the second parameter of count() function Server
ZBX-5395 fixed {ITEM.LASTVALUE1} and {ITEM.VALUE1} expanding in the trigger.get method API

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 1.8.16.

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 1.8 Manual