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 it from download.

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

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Bug Fixes

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

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Installation and Upgrade Notes

Installation

See Zabbix Manual for full details.

Upgrade

Recompile Zabbix binaries and update front-end PHP files. Execute a database patch if migrating from Zabbix 1.8.x. See Zabbix manual for a detailed upgrade procedure.

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