Release Notes for Zabbix 4.0.11

29 July 2019

Zabbix Team is pleased to announce the availability of Zabbix 4.0.11.

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 http://www.gnu.org/copyleft/gpl.txt.

This document contains the release notes for Zabbix 4.0.11. Download here.

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

---

New Features and Improvements

ZBXNEXT-4502	Added support of full JsonPath functionality Proxy Server
ZBXNEXT-5176, ZBXNEXT-5205	Blocked zero item history/trends period being overridden by global configuration Frontend Proxy Server

---

Bug Fixes

ZBX-16376	Fixed preprocessing steps having incorrect order and duplicate step numbers API
ZBX-16344	Fixed possibility to add graph widget overrides Frontend
ZBX-16388	Fixed LLD to update preprocessing step number in case it is incorrectly generated Server
ZBX-16337	Fixed debug log message for suppressed escalations; thanks to Kotaro Miyashita for the patch Server
ZBX-16287	Fixed compiler warnings in host.c; thanks to Glebs Ivanovskis for the patch Proxy Server
ZBX-16103	Reduced PCRE recursion limit Agent Proxy Server
ZBX-16289	Fixed async dashboard widget update Frontend
ZBX-13266	Improved performance of the SQL queries with lot of IDs in the condition API
ZBX-16277	Fixed compilation Zabbix agent for Windows with options available for Windows Vista and newer Installation
ZBX-16239	Fixed compilation warining related to prototypes of module API functions Agent Proxy Server
ZBX-16256	Eliminated possible infinite fetch loop with OracleDB Proxy Server
ZBX-15343	Fixed JS memory leak in hintboxes in graph widget Frontend
ZBX-16329	Fixed duplicate value checking in trigger action conditions Frontend
ZBX-15562	Reworked history.get API method; fixed output as well as other known issues in history API API
ZBX-16135	Fixed error messages in XML export files Frontend
ZBX-16213	Fixed PostgreSQL bad performance on history tables API
ZBX-16176	Preserve trailing spaces in history values Frontend
ZBX-16169	Improved performance of map navigation tree widget Frontend
ZBX-16288	Fixed when unknown resource logged in audit log when working with dashboards Frontend
ZBX-16134	Fixed duplicate triggers can be created using API and XML import API
ZBX-15969	Fixed displaying of very small values that are more than 2 decimal points in latest data Frontend
ZBX-16280	Fixed when Plain Text Widgets do not display as HTML when option is selected Frontend
ZBX-16012	Fixed confusing error message "Cannot read JSON." in HTTP agent item API Frontend
ZBX-16270	Fixed memory leak in IPC service when queueing multiple messages to client Proxy Server
ZBX-16204	Fixed undefined offset in CControllerWidgetProblemHostsView Frontend
ZBX-15962	Added mounted filesystems to vfs.fs.discovery of windows agent Agent
ZBX-16315	Fixed Zabbix server not to cause foreign key constraint failure on Zabbix proxy when changing and sending configuration at the same time Server
ZBX-16153	Fixed 500 Internal Server Error when trying to preview pie/exploded graph without items Frontend
ZBX-9867	Improved Zabbix daemon termination by not using signal unsafe functions in signal handler; improved Zabbix server and Zabbix proxy process termination by stopping data collection and waiting for history syncers to finish Agent Proxy Server

---

Installation and Upgrade Notes

Installation

See Zabbix documentation for full details.

Upgrade

See Upgrade procedure for upgrade options and instructions. For version specific upgrade notes, see Upgrade notes for 4.0.11.

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.

• Zabbix Enterprise Support
• Zabbix Training
• Zabbix Development services

---

References

Zabbix 4.0 Manual