ZABBIX 1.8.16rc2


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10 January 2013

Zabbix SIA is proud to announce the availability of Zabbix 1.8.16rc2 (Release Candidate).

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

This release fixes known issues of Zabbix 1.8.x. A nice overview of the new functionality is at

This release is not for production use. It is a Release Candidate!

If you are using Zabbix 1.8 with node-based distributed setup, please run the following SQL patch. It should improve performance of configuration syncing a lot.

DROP INDEX node_cksum_1 ON node_cksum;
CREATE INDEX node_cksum_1 on node_cksum (nodeid,cksumtype,tablename,recordid);

DROP INDEX node_cksum_1;
CREATE INDEX node_cksum_1 on node_cksum (nodeid,cksumtype,tablename,recordid);

DROP INDEX node_cksum_1;
CREATE INDEX node_cksum_1 on node_cksum (nodeid,cksumtype,tablename,recordid);

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

What's New in 1.8.16

:: Complete List of Bug Fixes and Improvements included into 1.8.16rc2

  • [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().
  • [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 Manual for full details.


Recompile Zabbix binaries and update front-end PHP files. Execute a database patch if migrating from Zabbix 1.6.x. See Zabbix Manual for a detailed upgrade procedure.

Pre-release testing

Zabbix Server

Zabbix Server has been tested on the following platforms:

  • Ubuntu Linux, AMD64, kernel 2.6.11, MySQL 5.x
  • Ubuntu Linux, Intel, kernel 2.6.15, MySQL 5.0.22, PostgreSQL 8.3
  • RedHat EL 5.3, Intel, kernel 2.6.18, Oracle 11gR2
  • Slackware Linux, x86, kernel, MySQL 5.1.x

Zabbix Agents

Zabbix Agents have been compiled and tested on the following platforms:

  • AIX 5.2
  • FreeBSD 4.x, 5.x, 6.x
  • HP-UX 10.x, 11.x
  • Linux 2.4.x, 2.6.x
  • Linux CentOS
  • NetBSD 2.0
  • OS/X 10.2
  • Solaris 8, 9, 10
  • Tru64 5.1B
  • Windows XP, 2000, 2003, 2008, Vista

Note that agents are available pre-compiled from for a limited number of versions and platforms.

Commercial support

Zabbix Company provides a full range of professional services. We also provide trouble-free upgrade service for easy migration from earlier versions to Zabbix 1.8.x. Please contact Sales for pricing and more details.


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