Release Notes for Zabbix 1.6.6

Zabbix Team is pleased to announce the availability of Zabbix 1.6.6.

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 1.6.6. 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-1024 added check for same application name in linked hosts
ZBX-1014 fixed gaps on graph with fixed y axis
ZBX-1013 fixed evaluation of aggregate items for proxy hosts
ZBX-1011 zabbix_sender will send data in blocks of 250 values per TCP connection
DEV-417 added services[] metric for Windows agents
ZBX-1005 fixed evaluations of functions diff, change and abschange for character items if received value more than 255 characters
ZBX-1004 made snmp parameters editable in templated items
ZBX-1001 fixed possible server crash while processing macros {ITEM.LASTVALUE}
ZBX-999 fixed query in availability reports
ZBX-996 fixed possible server crash with enabled StartDBSyncers option
ZBX-993 fixed possible vulnerability of trapper
ZBX-964 added check on item in trigger expression
ZBX-987 fixed shutting down server/proxy after connection lost to remote mysql server
ZBX-809 fixed memory leak while processing perf_counter metric under Windows
ZBX-959 fixed windows agent crash while processing performance counters under Windows 2000. Thanks to Takanori Suzuki
ZBX-733 added checks on value map creation/update
ZBX-768 improved menu linebreaking
ZBX-853 fixed item massdelete if not zabbix item selected
ZBX-963 removed sid from users map element url
ZBX-980 removed sid from users trigger url
ZBX-981 fixed aggregate item helper text
ZBX-213 added sql patches for graphs_items colour field
ZBX-933 fixed user profile auto-logout behavior
ZBX-908 fixed item nextcheck recalculation on item update
ZBX-965 fixed colour in graph legend
ZBX-966 added sorting in map creation form
ZBX-824 fixed net.tcp.service to work with host DNS name
ZBX-967 cosmetic changes in --help output of zabbix_get and zabbix_sender
ZBX-898 fixed slow performance of events component on a screen
ZBX-920 addedd missing indexes to DB upgrade patch for 1.6
ZBX-854 added support of template triggers for actions
ZBX-916 phrase 'delete selected' replaced by translatable S_DELETE_SELECTED
ZBX-960 fixed confirmation questions in Configuration->Hosts->Host groups
ZBX-975 TRUE/FALSE was replaced to Problems/Ok in Availability Report
ZBX-137 added new indexes for tables: httptest, httptest, actions, dhosts, dservices, escalations
ZBX-946 fixed drawing trigger line in graphs with trigger function "avg"
ZBX-968 added dropdown with time periods for IT services
ZBX-953 added informative note to zabbix_agentd --help output about user parameters and -t switch
ZBX-962 removed "Found: 0" from media type config form

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 1.6.6.

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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