Release Notes for Zabbix 4.2.0rc2

25 March 2019

Zabbix Team is pleased to announce the availability of Zabbix 4.2.0rc2.

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 4.2.0rc2. Download here.

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

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New Features and Improvements

ZBXNEXT-5109	Implemented test value saving before test sessions in preprocessing test forms Frontend
ZBXNEXT-1238, ZBXNEXT-4988	Added ability to test media types from UI Frontend Server
ZBXNEXT-5114	Improved multiline input control Frontend
ZBXNEXT-5123	Added server address and port to the Zabbix sender output Agent
ZBXNEXT-5105	Added context menu for trigger name in event details page Frontend
ZBXNEXT-5011, ZBXNEXT-5012	Implemented testing option for item preprocessing steps API Frontend Server
ZBXNEXT-4865, ZBXNEXT-4961	Added preprocessing steps to work with Prometheus agents API Frontend Proxy Server
ZBXNEXT-155	Added support of multiple macros in map element label, url name and url value API Frontend
ZBXNEXT-5083, ZBXNEXT-4861	Added support of LLD rule as dependent item API Frontend Proxy Server
ZBXNEXT-5081	Added item preprocessing support to proxies Proxy Server
ZBXNEXT-4967	Added Zabbix sender data sending to multiple destinations given in ServerActive configuration parameter Agent
ZBX-15286	Dropped support use of discovered items as master API Frontend
ZBXNEXT-158	Added ability to use discovery returned string as hostname and visible name API Frontend Proxy Server
ZBXNEXT-5013	Removed adaptive chunking from TimescaleDB script Installation
ZBXNEXT-5016	Extended preprocessing error messages to include intermediate step results Server
ZBXNEXT-4898	Added support IPv6 for "net.dns" and "net.dns.record" Agent
ZBXNEXT-5037	Added "skip" parameter for vmware.eventlog key Proxy Server
ZBXNEXT-4819	Implemented date and time showing in SVG graph widget Frontend
ZBXNEXT-221	Implemented hosts and hostgroups multiselect in items and triggers table filter API Frontend
ZBXNEXT-4944	Added javascript item preprocessing step API Frontend Server
ZBXNEXT-4857	Added animated GIF support for Zabbix Maps API Frontend
ZBXNEXT-5046	Added non-destructive resizing and reordering of dashboard widgets Frontend
ZBXNEXT-4731	Implemented host and template level tags API Frontend Installation Proxy Server
ZBXNEXT-401, ZBXNEXT-4907, ZBXNEXT-4955	Added monitoring of internal metrics from an external Zabbix instance Frontend Agent Installation Proxy Server Templates
ZBXNEXT-4087	Implemented preprocessing of LLD rules API Frontend Installation Server
ZBXNEXT-4868	Added TimescaleDB support Installation Server
ZBXNEXT-4877	Implemented support for custom JSON path in LLD macros API Frontend Installation Server
ZBXNEXT-1190	Implemented item prototype mass update and combined adding, updating and removing of applications in single control in item mass update form Frontend
ZBXNEXT-4933	Dropped support of "elementid" in map.create() and map.update() methods API
ZBXNEXT-4933	Dropped support of string format for "headers" and "variables" in httptest.create() and httptest.update() methods API
ZBXNEXT-4873	Implemented single dot datasets to be drawn as points in line vector graphs Frontend
ZBXNEXT-4724	Added validation and throttling preprocessing rules, ability to discard values and set errors API Frontend Server
ZBXNEXT-4876	Moved global search page to MVC framework Frontend
ZBX-14876	Added a new optional parameter <regex_excl_dir> to items vfs.dir.size[] and vfs.dir.count[] Agent
ZBXNEXT-4792	Added column "Latest values" in Monitoring->Problems and Dashboard Frontend
ZBX-15202	Implemented widget pausing methods in dashboard; made graph widget paused when using selection box or opening a tooltip Frontend
ZBXNEXT-2315	Implemented content matching in web monitoring headers Frontend Proxy Server
ZBXNEXT-4853, ZBXNEXT-517	Added ability to send email messages in HTML format on demand API Frontend Installation Server
ZBXNEXT-1282, ZBXNEXT-4730	Added changes to introduce regex based matching for auto-registration Frontend Server

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Bug Fixes

ZBX-15931	Fixed triggers filter for php 5.4 Frontend
ZBX-15839	Fixed broken layout of the breadcrumbs in Safari browser Frontend
ZBX-15867	Fixed invalid DNS being accepted when receiving discovery contents from Zabbix proxy Server
ZBX-15821	Fixed SQL statement performance used in template.unlink() method API
ZBX-15578	Fixed IPMI errors in case of infrequent reading of values Proxy Server
ZBX-15862	Fixed processing of long (megabytes) preprocessing test results Server
ZBX-15098	Fixed undefined index in application selection popup window Frontend
ZBX-15840	Fixed the type of pre-installed first email media as "text/plain" Server
ZBX-15351	Fixed PHP error in "Problems by severity" if no problems Frontend
ZBX-8907	Fixed weird description for queue trigger in templates Templates
ZBX-15552	Fixed compilation with LibreSSL as OpenSSL replacement and OpenSSL without PSK support Agent Proxy Server
ZBX-10317	Made info column on item list page always visible Frontend
ZBX-15322	Fixed graph area near grid line with 0 value Frontend
ZBX-15207	Fixed deprecated css features Frontend
ZBX-15798	Fixed proxy configuration update failure on Oracle; fixed failure on empty SQL buffer on Oracle Proxy Server
ZBX-15219	Fixed unwanted removing scenario post fields on scenario update API Frontend
ZBX-11278	Reworked property state indicator in mass update screens Frontend
ZBX-15716	Fixed escalation cancel message is called if escalation interrupts with unfinished step or recovery Server
ZBX-15468	Fixed LDAP configuration form not being able to save changes when user password field is empty string Frontend
ZBX-15669	Fixed page scroll after widget being added to dashboard Frontend
ZBX-15548	Fixed resolving of {ITEM.VALUE} macro in the trigger description Frontend
ZBX-15774	Fixed memory leak in housekeeper when elasticsearch is used Server
ZBX-15788	Fixed crash when substituting LLD macros in calculated item formula expression Server
ZBX-15608	Fixed when Widget Graph show disabled trigger/problem Frontend
ZBX-10397	Fixed when global messaging severities unchecked if profile saved earlier Frontend
ZBX-15693	Fixed widget default height in schema.tmpl Frontend Installation Server
ZBX-15596	Fixed when widget in frontend can be created larger than API validation supports API Frontend
ZBX-15308	Fixed timeselector in screens when page is opened with link containing sid argument Frontend
ZBX-15694	Fixed trimming of empty spaces for custom multiplier in item and item prototype preprocessing forms Frontend
ZBX-15196	Fixed "Follow redirects" checkbox not being enabled by default for HTTP agent in item, item prototype and LLD rule create forms Frontend
ZBX-15670	Fixed inefficient vmware eventlog downloading Proxy Server
ZBX-15483	Fixed undefined index in Item Prototype update Frontend
ZBX-15270	Fixed graph widget configuration form cross browser issues Frontend
ZBX-15300	Fixed widgets extra space at the bottom Frontend
ZBX-8091	Added alphabetic ordering of net.dns.record respond Agent
ZBX-15707	Fixed check box design when drag and drop an interface into SNMP Frontend
ZBX-15535	Fixed validation of min/max value range in graph widget; fixed translation string in graph widget Frontend
ZBX-15648	Removed unused WIDGET_HAT_EVENTACTIONMCMDS and WIDGET_HAT_EVENTACTIONMSGS constants Frontend
ZBX-15386	Fixed Trigger overview not showing OK triggers API Frontend
ZBX-14538	Fixed error message when value of lifetime or history/trends storage period is out of range API Frontend
ZBX-15614	Fixed validation of y axis item on classic graph create and update API Frontend
ZBX-15226	Fixed missing visual gap under page title Frontend
ZBX-15560	Fixed incorrect URL argument formatting when parameters are non-indexed arrays Frontend
ZBX-15719	Fixed undefined index in trigger expression popup Frontend
ZBX-15332	Fixed dashboard svg graph update on timeselector interval change Frontend
ZBX-15728	Fixed agent startup problem in Win 2008 R2 w/o SP1, removed dependency on version helper API Agent
ZBX-15622	Fixed trigger expression test dialog not being usable with long trigger expressions Frontend
ZBX-13332	Fixed Request-URI Too Long errors in PopUps; fixed lost focus, when closing error popup Frontend
ZBX-15607	Fixed possibility of zombie processes occurring when signaling agent during metric execution Agent
ZBX-10496	Fixed links to installation instructions in README file Documentation
ZBX-15625	Removed links leading to media type edit form for non-superadmins in Reports->Notifications page Frontend
ZBX-8344	Remove trimming of leading and trailing whitespaces for data received from agent Documentation Agent Proxy Server
ZBX-15703	Fixed use of uninitialized variable when receiving 0 bytes on listening socket Proxy Server
ZBX-15537	Fixed visual bug when filter tab was overlapped by sub navigation Frontend
ZBX-15539	Fixed validation of master item in item update form Frontend
ZBX-15532	Fixed undefined index error on problems page when trigger expression contains web items Frontend
ZBX-15488	Fixed permission check for inherited triggers API
ZBX-15646	Fixed web-server 'Request-URI Too Long' error in trigger description dialog Frontend
ZBX-15688	Fixed wrong host group and host selection in trigger dependencies window Frontend
ZBX-15686	Fixed wrong number of selected triggers when navigate to inherited template Frontend
ZBXNEXT-4941	Changed overflow statements to execute one by one for Oracle for better performance Proxy Server
ZBX-15664	Fixed "Undefined index" errors on maps with enabled automatic icon mapping Frontend
ZBX-15667	Fixed wrong default Zabbix server status for new installation Installation
ZBX-15512	Fixed performance issues and significant memory consumption on several pages which contains host popup menus Frontend
ZBX-15512	Fixed performance issues in "Problems by severity" widget Frontend
ZBX-15593	Fixed database upgrade patch to stop upgrade on commit failure Proxy Server
ZBX-15611	Fixed crash in configuration syncer when there are groups with same name and when removing preprocessing steps from item Server
ZBX-15242	Fixed value trimming and duplicate catching in SVG graph pattern fields Frontend
ZBX-15250	Fixed selection box height calculation in classic graph Frontend
ZBX-15379	Fixed -Wimplicit-fallthrough warnings when compiling with GCC 7 and -Wextra Agent Proxy Server
ZBX-15179	Fixed when message about blocking user login is displayed only on next login attempt API Frontend
ZBX-15494	Fixed handling numbers that written in scientific notation Agent Server
ZBX-15533	Fixed cutting and trimming event tags and values Server
ZBX-15442	Fixed reporting idle time in datasender's process state information Proxy
ZBX-15424	Fixed when multiselect doesn't trim values and recognizes untrimmed values as new ones Frontend
ZBX-14644	Fixed maintenance time periods "start_date" field being reset to "1920" instead of DB default value when updating via edit form Frontend
ZBX-15422	Fixed SQL errors when linked template have item prototype with equal key as host item API
ZBX-15456	Fixed incorrect style property in Monitoring->Problems; removed unused id from filter form Frontend
ZBX-15412	Fixed Name column overlaps the Application column in the Template view Frontend
ZBX-15316	Fixed problem with socket inheritance preventing Windows agent from restarting under certain circumstances Agent
ZBX-15271	Added link to documentation in all man pages Documentation
ZBX-15577	Fixed restricted user access to the host name when calling host_screen Frontend
ZBX-13335	Fixed low performance with linkage of items and item prototypes to a lot of hosts API
ZBX-15435	Fixed "Undefined index" errors in the "Problems" widget with multiple active maintenances which part of these are inaccessible Frontend
ZBX-15417	Changed vmware collector to perform datastore configuration refresh only when directly monitoring ESXi version lower than v6.0 Proxy Server
ZBX-14896	Fixed low performance of the SQL statement when link template to many hosts API
ZBX-15220	Fixed displaying of last value for values received in the same second API
ZBX-15451	Fixed event correlation when "Event tag pair" condition is used and tag contains special characters Server
ZBX-15460	Reset agent availability when host status changes, e.g., when host gets disabled Server
ZBX-15331	Updated LLD item creation/updating error messages Server
ZBX-15465	Removed html non-breaking space from visiblity checkbox labels Frontend
ZBX-15307	Fixed upper level maps positioning in Monitoring Map screen Frontend
ZBX-15428	Improved regular expression performance by studying compiled pattern Agent Proxy Server
ZBX-11761	Added warnings in case of TLS identity mismatch Agent Proxy Server
ZBX-15373	Fixed removal of trigger when deleting discovered item; fixed removal of dependent child items when removing master item API
ZBX-14613	Fixed hostgroup.delete and host.delete API methods to validate maintenance constraint API
ZBX-14863	Fixed authentication settings form of LDAP anonymous binding Frontend
ZBX-15374	Fixed SQL and PHP errors on chart3.php page Frontend
ZBX-15301	Fixed monotonous lag behind in Windows "system.localtime" Agent
ZBX-15377	Fixed error messages for arrays in GET parameters Frontend
ZBX-15369	Fixed "Undefined index: label" in map.update() method API
ZBX-15376	Fixed "Undefined index: refresh" on several pages with disabled guest user Frontend
ZBX-15375	Fixed web scenario step name can consist only of whitespaces Frontend
ZBX-15375	Fixed undefined index on Web scenario configuration page Frontend
ZBX-15372	Fixed SQL and PHP errors on "Slide shows" page when enter slides.php witout GET parameters Frontend
ZBX-15359	Fixed undefined index in maintenance.create and maintenance.update API calls API
ZBX-15358	Fixed undefined index in configuration.import API call without one or several rules API
ZBX-15355	Fixed undefined index in configuration.import API call API
ZBX-14926	Fixed empty "inventory" property being returned by API if inventory mode is disabled API
ZBX-15354	Fixed undefined index in API calls without "auth" parameter API
ZBX-15399	Fixed IPv4 connections not being accepted when IPv6 mask is used Agent Proxy Server
ZBX-14331	Fixed error allowing users to change type of a host interface that already has items attached API
ZBX-15241	Fixed escaping regexp symbols in preprocessing output parameter when creating item by LLD Server
ZBX-15254	Fixed incorrect matching string highlight in multiselect autocomplete box Frontend
ZBX-15136	Fixed displaying 'Plain text' on the dashboard as html Frontend
ZBX-14592	Fixed calculation of SLA and availability report when problem has negative duration API Frontend
ZBX-15400	Fixed possible crash in preprocessing manager when items with change/throttle preprocessing steps were not being monitored anymore Server
ZBX-13804	Fixed generic popup form submission Frontend
ZBX-15313	Fixed unit suffix support in calculated item expressions Server
ZBX-15156	Fixed undefined offset error in host screen with web item API
ZBX-14980	Fixed problem with filter by itemids and hostids in history.get API
ZBX-15224	Fixed failed query errors when receiving non UTF-8 history values Proxy Server
ZBX-14624	Fixed agent collector not releasing connection to missing/removed disk devices Agent
ZBX-15279	Fixed handling of LLD processing errors that should have resulted in not supported LLD rule state Server
ZBX-14604	Fixed displaying of the graph name on screens Frontend
ZBXNEXT-4588	Renamed 'display options' tab to 'displaying options'; fixed multiple layout issues, footnote in hint-box, field value handling, calculation of mouse position, multiple issues related with Y axis and problem styling Frontend
ZBX-15159	Fixed existing context menu closing when new one is opened Frontend
ZBX-15233	Renamed fuzzytime() function description in dropdown list Frontend
ZBX-12801	Excluded zabbix_sender.dll from MS Windows builds with TLS Agent
ZBXNEXT-4883	Fixed when trigger in problem state hides all dependent triggers in history view Frontend
ZBX-15260	Improved misleading warning message when agent fails to find log file during processing logrt[] item Agent
ZBX-15258	Fixed update interval of "Zabbix queue" item in server's template to be consistent with proxy template, added missing units in proxy template Templates
ZBX-15225	Improved handling of timeouts in "vfs.dir.size" and "vfs.dir.count" items on Windows agent Agent
ZBX-15206	Fixed deprecated net-snmp attribute Proxy Server
ZBX-15067	Fixed configuration sync of interfaces without hosts Proxy Server
ZBX-15238	Fixed updating nextcheck time in discovery rules to avoid overlaps between discovery executions Proxy Server
ZBX-13673	Fixed regexp validation when pattern contain slash character Frontend
ZBX-13773	Fixed naming inconsistencies in agent template, added more trigger descriptions in proxy and server templates Installation Templates
ZBX-14528	Fixed incorrect keycode handling in multiselect input fields Frontend
ZBX-15124	Fixed trigger overview behavior when show "any" API Frontend
ZBX-14648	Fixed performance with deletion of item in template linked to many hosts API
ZBX-9011	Added new LLD macros for vmware HV low-level discovery Proxy Server
ZBX-15105	Fixed colorpicker tooltip update Frontend
ZBX-14928	Fixed "check now" being executed for active items and templates API Frontend
ZBX-15153	Fixed custom interval validation; fixed parsing of custom intervals when user macros context contains forward slash Frontend
ZBX-9038	Fixed memory of performance counters consumed during vmware update Proxy Server
ZBX-8383	Updated Tomcat template for compatibility with recent Tomcat versions Installation Templates
ZBX-15078	Fixed API authentication for ldap users having gui access disabled API
ZBX-14880	Fixed misleading ldap authentication error messages API Frontend
ZBX-14877	Fixed style of disabled action on high contrast theme Frontend
ZBX-14606	Removed strict-transport-security header from frontend Frontend
ZBX-15020	Fixed negative time selector offset when selecting time range in graph Frontend
ZBX-14977	Fixed creation of unneeded database record if host prototype inventory mode is disabled; fixed validation for host and host prototype inventory mode API
ZBX-15146	Fixed SQL error occurred when too long IP address is attempted to be written in database API
ZBX-15148	Fixed web scenario item selection in SVG graph widget Frontend
ZBX-15107	Fixed error handling in logrt[] items if regular expression for file name is not valid Agent
ZBX-14800	Fixed resolving of functional macros in graph widget name Frontend
ZBX-15178	Fixed wrong behaviour when referencing unexisting capture groups in item regexp preprocessing, general pcre code improvements Agent Server

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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 4.2.0.

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

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References

Zabbix 4.2 Manual