Release Notes for Zabbix 1.8.16rc2

Zabbix Team is pleased to announce the availability of Zabbix 1.8.16rc2.

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 1.8.16rc2. 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
ZBX-5201 added handling of PerfCounter error PDH_CALC_NEGATIVE_DENOMINATOR
ZBX-6097 fixed the ability to override LDAP configuration when calling user.login
ZBX-5988 fixed memory leak in functions evaluate_LOGEVENTID(), evaluate_STR(); thanks to Takanori Suzuki for patch
ZBX-3754 fixed "Undefined variable" in the trigger expression constructor
ZBX-3038 fixed the trigger expression constructor to parse expressions created in log wizard
ZBX-2793 added possibility to add macros without an item in the trigger expression
ZBX-5896 fixed inserting OR condition the trigger expression constructor
ZBX-5833 fixed inserting a macro in the trigger expression constructor
ZBX-4695 added support of simple check keys with user macros in the trigger expression
ZBX-5884 improved the trigger expression constructor to work with parentheses
ZBX-5814 fixed an incorrect error message when saving an illegal trigger expression
ZBX-4247 fixed processing of trigger expression if item key contains another trigger expression string
ZBX-2640 fixed some issues when creating and editing log triggers
ZBX-5803 fixed message initialization memory leak in IE7
ZBX-5898 fixed Insert Macro button does not work in trigger constructor on IE7 and IE8
ZBX-5822 fixed macro in trigger names for unixtime and other types of units
ZBX-5697 fixed processing of external check parameters with the right square bracket
ZBX-5454 fixed encoding of long email subject line as required by RFC-2047; thanks to Jairo Eduardo Lopez Fuentes Nacarino
ZBX-5650 added more information about ProxyLocalBuffer parameter in the example configuration file
ZBX-4097 changed the "application", "host" and "group" parameters for item.get and trigger.get to be case sensitive
ZBX-5514 fixed SQL query in get_min_itemclock_by_itemid function
ZBX-5505 fixed incorrect SQL query building using limits
ZBX-5512 fixed undefined index in screens
ZBX-5383 maximum data size accepted via Zabbix communication protocol is limited to 128 MB
ZBX-5450 added support of "KMGTsmhdw" suffixes in the second parameter of count() function
ZBX-5395 fixed {ITEM.LASTVALUE1} and {ITEM.VALUE1} expanding in the trigger.get method

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 1.8.16.

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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