Release Notes for Zabbix 4.2.0rc1

Zabbix Team is pleased to announce the availability of Zabbix 4.2.0rc1.

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 4.2.0rc1. 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-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

Bug Fixes

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

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.

References

Zabbix 4.2 Manual

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