Release Notes for Zabbix 4.0.0rc3

Zabbix Team is pleased to announce the availability of Zabbix 4.0.0rc3.

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 4.0.0rc3. Download it from downloads.

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-4757
added new dashboard to "Zabbix server health"
ZBXNEXT-4757
renamed default dashboard to "Global view" and improved widget layout
ZBXNEXT-4757
added support of "pused" mode for cache-related internal items
ZBXNEXT-4757
added new and renamed existing items in "Template App Zabbix Server" and "Template App Zabbix Proxy" templates
ZBXNEXT-4721
removed footer from dashboard widgets
ZBXNEXT-4588
improved performance of problems selection in graph widget; renamed 'Classic graph' to 'Graph (classic)'; fixed several bugs in graph widget
ZBXNEXT-4722
made operator names consistent in all interface
ZBXNEXT-4739
removed deprecated macros $1-$9 from item names in templates
ZBXNEXT-4736
added index by nextcheck to escalations table
ZBXNEXT-4672
added option to show suppressed problems for data overview page and widget
ZBXNEXT-3860
added ability to filter triggers by tags
ZBXNEXT-4606
implemented kiosk mode for all pages
ZBXNEXT-4696
improved history syncer performance by moving trigger locking outside history cache lock
ZBXNEXT-3848
added validation of update interval, custom interval, history storage period and trend storage period in low-level discovery
ZBXNEXT-4224
implemented templates for server hardware: IBM,HP,Dell,Supermicro
ZBXNEXT-4588
Implemented SVG graph generation
ZBXNEXT-4588
Implemented SVG graph widget with multiple new widget fields; Renamed existing graph widget to 'Classic graph'; Implemented vertical accordion; Added new UI controls for range control and overrides selection
ZBXNEXT-4588
Added option to store long widget field strings as array of short strings; Created class to resize the height of textarea field automatically
ZBXNEXT-4588
Improved API validation; Extended time units functionality to allow negative values
ZBXNEXT-4573
added support of HTTP authentication as optional authentication mechanism
ZBXNEXT-413
added maintenance tag filters to support suppression of individual problems based on their tags
ZBXNEXT-4609
added options Tag display priority and Tag display names in Problems
ZBXNEXT-4656
added strict validation of hostprototype.create() and hostprototype.update() methods; added audit logging for these methods
ZBXNEXT-4455
added screen reader to the dashboard and widgets
ZBXNEXT-4627,ZBXNEXT-4656
added support of macro functions to LLD macros
ZBXNEXT-4049
added option to hide timeline in Problems widget
ZBXNEXT-4611
changed default method for http agent items from "post" to "get"
ZBXNEXT-4587
added new column 'Value' and filter in Triggers list
ZBXNEXT-4626
improved widget configuration constructor to create custom view for each widget
ZBXNEXT-4597
implemented single textbox date fields in maintenances, services, top 100 triggers and availability reports pages
ZBXNEXT-4558
added support for monitoring the string values of custom JMX MBeans
ZBX-14586
added more informative error message for InstanceNotFoundException error
ZBXNEXT-4454
added screen reader attributes for common elements
ZBXNEXT-4200
added ability to create LLD item prototype of type "dependent" with a master item not only item prototype
ZBXNEXT-1701
added support of regular expressions and global regular expressions to "logsource()" trigger function
ZBXNEXT-4586
added support of macros {ITEM.VALUE} and {ITEM.LASTVALUE} to trigger URL
ZBXNEXT-4049
added checkbox to hide timeline when problems sort by time
ZBX-1357
added and enabled Norwegian translation to be displayed by default
ZBXNEXT-4367
added screen reader features for multiselect
ZBXNEXT-4530
implemented changeable session cookie name
ZBXNEXT-4446
added ability to change severity of previously generated problems
ZBXNEXT-4044
changed default values of 'Display OK triggers for' and 'On status change triggers blink for'
ZBXNEXT-4361
implemented new time range selector for graphs
ZBXNEXT-4577
improved performance of Zabbix server by replacing semaphores to pthread mutexes and read-write locks
ZBXNEXT-4312
reworked date picker; implemented keyboard interaction
ZBXNEXT-2365
added additional auto-registration operations and re-running of auto-registration actions if host metadata is modified
ZBXNEXT-4569
added support of MySQL 8.0
ZBXNEXT-4565
removed old upgrade DB patches
ZBXNEXT-4320
added ability to store history data in date based indices of elasticsearch
ZBXNEXT-4526
increased tags column size in Compact view mode
ZBXNEXT-4528
added link to Zabbix official support page
ZBXNEXT-4520
added values to boolean mapping: "ok, master" as 1 and "err, slave" as 0
ZBXNEXT-4185
added support of multiple items in "Plain text" widget
ZBXNEXT-4163
added support LLD, User macros and User macros with context from LLD macro in Items preprocessing
ZBXNEXT-4415
added new mode "Compact view" to the Problems page with ability to toggle highlighting whole row; added option to toggle timeline
ZBXNEXT-2788
added support for "NOT" keyword in custom expression fields
ZBXNEXT-4516
renamed dashboard widget and screen element "System status" to "Problems by severity"
ZBXNEXT-4516
renamed dashboard widget and screen element "Host status" to "Problem hosts"
ZBXNEXT-4516
renamed dashboard widget, screen element and report "Status of Zabbix" to "System information"
ZBX-13376
moved functionality to enable JMX interface in Java gateway to settings.sh and ensured setting TCP timeout
ZBXNEXT-4458
improved logging of Java gateway, added username/password validation for JMX items
ZBXNEXT-4411
added compression of server-proxy data exchange
ZBXNEXT-4488
added ability to push data via trapper to HTTP agent item type
ZBXNEXT-4358
added HTTP agent item type for data gathering via HTTP
ZBXNEXT-4413
dropped Monitoring->Triggers view
ZBXNEXT-4413
added the trigger context menu option to view or edit the trigger description
ZBXNEXT-4413
added displaying of the trigger dependencies in Monitoring->Problems view
ZBXNEXT-4151
added aria roles to provide easier access by keyboard navigation
ZBX-3783
added strict validation for apiinfo.version(), action.delete(), correlation.delete() and drule.delete() methods
ZBX-3783
prohibited deleting discovery rules which are used in actions
ZBX-3783
added audit for action.delete() and correlation.delete() methods
ZBXNEXT-4143
implemented submenu autofocus on top-level menu click
ZBXNEXT-4414
added support for configurable number of displayed tags
ZBXNEXT-4313
implemented keyboard interaction in context menus
ZBXNEXT-4426
added option to execute cached passive checks at the current time
ZBXNEXT-4417
added real time export of events, history and trends in newline delimited JSON format
ZBXNEXT-4374
implemented the widget configuration fields clearing when changing the type
ZBXNEXT-4119
implemented tag based permissions
ZBXNEXT-4045
implemented maximum size for graphs in widgets
ZBXNEXT-4340
added kiosk mode for dashboard
ZBXNEXT-4150
implemented access to interactive elements using keyboard
ZBXNEXT-4149
implemented keybord interaction in overlay popups
ZBXNEXT-4357
added support of "selectTriggerDiscovery" option in trigger.get method
ZBXNEXT-4152
replaced double box select fields with multiselect fields and added filtering by proxy and server only in host list
ZBXNEXT-4273
added default event status colors in themes with option to customize them
ZBXNEXT-4216
added 'copytruncate' log file rotation support for logrt[], logrt.count[]
ZBXNEXT-4144
added asterisk mark and aria-label property to all forms required fields
ZBXNEXT-768
added item unit blacklisting with character "!" in order to disable metric prefixes
ZBXNEXT-4295
added selection of the create images tickbox by default on "Maps import" page
ZBXNEXT-1456
added filter by item discovery status for item configuration view; thanks to Volker Fröhlich for the original patch
ZBXNEXT-3991
added additional params to net.if.* key output for linux base agent
ZBXNEXT-3480
added support of inventory macros in event tags
ZBXNEXT-4175
implemented ability to send email to several email addresses specified as user media
ZBXNEXT-4139
added high contrast light and high contrast dark themes
ZBXNEXT-4247
removed deprecated API methods: user.updareProfile, user.addMedia, user.updateMedia, user.deleteMedia, usergroup.massAdd, usergroup.massUpdate and usermedia.get
ZBXNEXT-970
added more detailed error information to notification message when DB is unavailable
ZBXNEXT-4137
removed green background from cells
ZBXNEXT-4157
added map status summary to be readable by screen reader software
ZBXNEXT-4127
implemented popup displaying in overlay dialogues
ZBXNEXT-1520
increased the maximum Hosts/DNS name character length from 63 to 255
ZBXNEXT-4108
implemented search of problems by trigger name
ZBXNEXT-4143
implemented keybord interaction in top navigation
ZBXNEXT-1567
added item "vfs.dir.count" for counting directory entries
ZBXNEXT-4135
added tooltips for vertical labels
ZBXNEXT-4146
added icons for error and success messages
ZBXNEXT-4156
added option to view graphs items data and multiple items graph data as table
ZBXNEXT-4160
reworked monitoring Discovery screen to show hint info right in the table cell
ZBXNEXT-761
added rules to make dbschema.c, schema.sql and data.sql from schema.tmpl, data.tmpl and templates.tmpl if there is a need to
ZBXNEXT-4186
added ability to adjust colors for new graph items in graph creation form according selected theme
ZBXNEXT-4145
fixed appearance of host column based on number of hosts specified in filter
ZBXNEXT-4118
implemented advanced options for tag-based search of problems
ZBXNEXT-4134
added 'lang' attribute to page body
ZBXNEXT-4181
fixed Zabbix server to accept active Zabbix proxy requests only from allowed address if specified
ZBXNEXT-4181
fixed passive Zabbix proxy to accept Zabbix server requests only from allowed address
ZBX-10576
restructured unixODBC related code, moved it to a dedicated directory
ZBX-3783
added strict validation for proxy.delete() method; proxy cannot be deleted when used in actions
ZBX-11909
replaced company.com with example.com in data.sql

Bug Fixes

ZBX-14853
fixed error of vmware items caused by misconfigured vmware maxQueryMetrics parameter
ZBXNEXT-4588
fixed multiple minor issues in SVG graph widget; fixed dashboard widget height calculation
ZBX-14891
fixed undefined index "show_timeline" in screens
ZBX-14874
fixed SQL errors being generated in database log files
ZBX-14783
fixed align of the left column in several widgets and reports
ZBX-13377
fixed naming of groups and applications
ZBX-14335
fixed bug in proxy makefile
ZBX-14850
reverted ZBXNEXT-3848 fix because of broken update interval validation during low-level discovery
ZBX-14830
fixed possible deadlock when history syncer was trying to update escalations with recovery event id
ZBX-13377
fixed naming issue for "Server Hardware" host group
ZBXNEXT-4573
fixed HTTP authentication page issues, HTTP case sensitive option and moved HTTP authentication from API to HTTP form page
ZBX-14721
improved escalator performance by replacing previously unused index
ZBX-14720
improved history syncer performance during problem recovery by adding index on escalations table and avoiding full table scan
ZBX-14821
fixed full sync when only timer triggers are being processed, added trigger statistics to history syncer title
ZBXNEXT-4588
Fixed changelog adding more detailed description of features added in 4.0.0beta1; Fixed Data set widget field to be compatible with PHP versions affecting PHP bug #42355
ZBX-14797
fixed calendar initialization in graph configuration form
ZBX-14812
fixed hexadecimal to decimal preprocessing step to allow pairs of hexadecimal digits separated by space or new line
ZBX-14496
fixed unauthorized request error when sorting list after enabling/disabling elements
ZBX-14808
fixed SQL error in user permission check when processing actions for internal item events
ZBX-14614
fixed server template linking with triggers having no dependencies
ZBXNEXT-4597
fixed date selection fields in maintenance and services: fixed accepted date format, fixed validation and added placeholdrs
ZBX-6565,ZBX-13645,ZBX-14559
fixed agent on AIX 6.1 TL0, 7.1 TL0: system.stat[memory,avm], compilation, crash on net.dns[] items
ZBX-12217
removed links to templates with no permissions for templated discovery rules and item prototypes
ZBX-13015
fixed X axis labels with DST transition in the displayed period
ZBX-14777
increased severity of housekeeper logs in the case of invalid history/trends intervals
ZBX-14778
fixed housekeeper attempting to remove history of discovery rules/prototypes
ZBX-14771
fixed memory leak in poller if scheduling interval is invalid
ZBX-14462
improved time selection when opening calendar with missing time
ZBX-14775
fixed configuration of the maximum available count of aggregated metrics in a single request to vmware vCenter
ZBX-14637
fixed unreadable text on the problems widgets in dark theme
ZBX-14676
fixed displaying links containing UTF-8 characters
ZBX-14751
fixed "cannot run test program while cross compiling" and "cannot check for file existence when cross compiling" errors during cross-compilation
ZBX-14677
fixed vmware performance counter retrieval on installations with large number of datastores
ZBXNEXT-4500
fixed item prototype master item links leading to error when master item is a web item
ZBX-14697
fixed memory leak in alert manager when connection to database was lost
ZBX-14629
fixed breadcrumb labels clipping
ZBX-14628
fixed empty MAIL FROM in email alerts
ZBX-14696
changed problem_tag index to optimize database queries
ZBX-12293
renamed trigger functions by adding function name at the beginning and removing the operator and "N" and placing operator in a separate field allowing two new operators "<=" and ">=" for selection
ZBX-9731
changed value cache to drop unused items from cache when new values are added instead performing this cleanup only when cache runs out of free space
ZBX-14593
fixed error message for invalid vmware endpoint
ZBX-14614
fixed trigger dependency link to the template instead of the host during the discovery action
ZBX-372
added "zone" parameter to proc.num[] item for Solaris
ZBX-14631
fixed typo in string: ouf, not out
ZBX-14410
fixed output of information about the error for expressions with functions of triggers or calculated items
ZBX-14341
fixed duplicate value generation in environments with poor connectivity
ZBX-9913
fixed inconsistencies in behaviour and error messaging of trigger functions
ZBX-14448
fixed undefined index when updating item and switching type to dependent
ZBX-14670
fixed failed query error in LLD when updating function name in trigger prototype expression
ZBX-14433
fixed several problems in displaying of X axis on the graphs
ZBX-14579
improved several functions to distinguish between 'failed to compile' and 'not matched' states in regexp processing
ZBX-14584
fixed mass update some options for items
ZBX-12217
removed links to templates with no permissions for templated applications and items
ZBXNEXT-4607
removed column Recovery time in Problems mode
ZBX-14548
fixed the disk usage counters reading for ESX/ESXi hosts
ZBXNEXT-4049
fixed option to hide timeline in Problems widget popup
ZBX-13393
fixed agent compilation error on AlphaServer Tru64 5.1B
ZBX-14491
fixed link "show value mappings", which leads to no permission page
ZBX-13165
fixed Y-axis small value gradation issue in graphs
ZBX-14575
fixed Norwegian locale key for windows
ZBX-14566
fixed possible data loss due to MariaDB server restart
ZBX-13010
fixed crash of poller processes in ODBC checks, simplified code
ZBX-14370
fixed deleting of files after compiling a program (make clean) for Solaris
ZBX-14519
fixed displaying timeline points of days in Problems widget
ZBX-12380
improved function parameter parsing for trigger functions
ZBX-12994
improved maintenance period translation strings in maintenance form
ZBXNEXT-4622
updated change severity action icons in sprite files
ZBX-14426
fixed trigger color in host issues screen and host group issues screen, color of problem with highest severity generated by trigger is used instead of trigger color
ZBX-13396
moved time function based trigger processing to history syncer, reducing trigger locking issues caused by peak timer processing loads
ZBX-13651
fixed cloning a template using the "Full Clone", which does not hide the upper level navigation bar
ZBX-14425
color of problem with highest severity generated by trigger is used as trigger status color on data overview page
ZBX-8051
fixed auto-logout problem caused by async calls to jsrpc
ZBX-13641
disabled preprocessing update for discovered items
ZBX-13381
fixed invisible color picker selector, fixed wrong color preview, extended color pallette
ZBX-14410
improved error message handling in zbx_function_find()
ZBX-14500
fixed crash when reporting unknown triggers and using $1-$9 macros at the same time
ZBX-14525
fixed sorting by severity in Monitoring->Problems and Problems widget
ZBX-12580
reworked problem hosts widget to source data from problems and take changed severity into account
ZBX-14537
fixed HTTP agent application/json Content-Type not being set by default when using custom headers
ZBX-12104
added limit ZBX_HISTORY_PERIOD for {ITEM.VALUE} macro resolving in trigger name
ZBX-14359
changed problem name macro in default action subject and message from TRIGGER.NAME to EVENT.NAME
ZBX-13718
fixed selection of cached checkboxes in checkbox range library
ZBX-13647
fixed defined default discovery action message
ZBX-12115
changed API returned lastvalue and prevvalue for text based items with no values
ZBX-14409
fixed icon mapping expression validation
ZBX-14402
fixed internal item parameter that does not match documentation
ZBX-11989
fixed condition operators for event correlation rules
ZBX-13779
fixed redirect button link in multiple places
ZBXNEXT-4361
fixed selected breadcrumbs item style; fixed active time range tabs hover cursor style
ZBX-14420
fixed link to Problems screen in map element's context menu
ZBX-12957
removed time adjustment of received packets for server and proxy
ZBX-12171
added missing items zabbix[process,vmware collector,avg,busy] and zabbix[vmware,buffer,pfree] to Template App Zabbix Proxy
ZBX-14388
fixed log message about full history cache
ZBX-13283
removed info label in Trigger severities and Users administration pages
ZBX-6046
fixed the functions 'net.if.*' for Solaris with empty 64 bits counters
ZBX-13355
fixed media type a required password field successfully passing validation while being empty and prevented auto-filling stored passwords by browser
ZBX-13701
fixed hintbox multiplication on page refresh
ZBX-14398
improved "Server" parameter description in Zabbix agent configuration file
ZBX-14344
fixed host groups, hosts and applications not being taken into account when filtering problems by problem name in Monitoring->Problems view
ZBX-11434
added error messages when creation of LLD SNMP items fails due to SNMP OID field
ZBX-12250
fixed logrt[] item to analyze log file from start if no log files match and no log files were seen before
ZBX-13765
fixed discovered host status update if it was down and a service was discovered on that host
ZBX-12070
fixed "proc.num" and "proc.mem" items calculation of values when zabbix_agentd called in test mode
ZBX-14423
fixed use of initialized variable during application discovery
ZBX-12990
improved "vmware.hv.datastore.size" through usage the performance counters
ZBXNEXT-4540
fixed problems filter with same tags not being joined with OR condition
ZBXNEXT-4576
unified dashboard widget content margins
ZBX-12965
- fixed scheduled check calculation during daylight saving changes
ZBX-13712
fixed "Undefined index: master_itemid" and SQL errors in item.update and itemprototype.update methods; fixed updating of discovered items
ZBX-14329
fixed error opening map's submap
ZBX-13549
fixed displaying of not monitored triggers in maps
ZBX-13783
dropped support for Zapcat-style and multi-level parameter arrays from item key validation in frontend
ZBX-12359
fixed "Automatic icon selection" checkbox not working and displaying two icons at once in map constructor
ZBX-12239
fixed global search form allowing to submit empty search queries
ZBX-12177
renamed "Icon" to "Map element" in Network map properties and constructor
ZBX-14333
fixed {ESC.HISTORY} and action log not to display colon without target host when executed on Zabbix server
ZBX-14345
fixed lock wait timeout error handling on MySQL to avoid possible data loss
ZBX-13361
fixed error messages when configuring an existing item to have an update interval
ZBX-14328
improved logging of command execution failures
ZBX-13803
fixed "make install" to respect DESTDIR variable, this is essential for packaging
ZBX-12603
fixed tab navigation and keyboard interaction in dashboard sharing and properties dialogues; added validation inside popups
ZBX-13043
removed error message for when user has defined media but all of them are disabled
ZBX-14312
fixed possible deadlock in history syncer when housekeeper is deleting events
ZBX-13697
fixed session expiration when changing default authentication method
ZBX-13768
fixed disabled 'add' button showing in templated item preprocesing form
ZBX-13680
fixed action not being cloned due to existing operation id being submitted
ZBX-13775
fixed map tree widget border color
ZBX-13780
fixed status color styles
ZBX-12350
fixed severity picker styles
ZBX-13782
fixed decoding of Unicode characters in JSON
ZBX-13767
fixed "undefined index: acknowledges" error on problems page
ZBX-12175
fixed subfilter entries with long names going off the screen
ZBX-12644
fixed filter being partially reset when using pagination in availability report page
ZBX-12390
fixed problem when triggers might not use correct value if an item values within one second were received in wrong historical order
ZBX-13788
fixed host availability stuck in unknown state after proxy changes
ZBX-14313
fixed trigger level correlation when multiple tags are set
ZBX-12372
fixed duplication of prefix "/" for second parameter "path" in items "web.page.*"
ZBX-14315
fixed validation of "max_depth" in "vfs.dir.size" for agent
ZBX-13778
fixed logically dead code in JSON Path parser
ZBX-14337
fixed persistent xss in map navigation tree widget
ZBX-14336
fixed persistent xss vulnerability in services
ZBX-13750
fixed hover and focus style for edit dashboard cancel button, improved top nav css coding style
ZBX-13694
disable check now for items with scheduler configuration errors
ZBX-9882
removed Zapcat-style and multi-level array type support in item key parameters
ZBX-12821
fixed multiple javascript memory leaks
ZBX-13755
fixed proxy lastaccess update on 32-bit Zabbix server
ZBX-12425
fixed selection of web items in the "Plain text" screen element
ZBX-13781
fixed CRLF injection in Zabbix Agentd
ZBX-13737
fixed invalid confirmation message when mass enabling and disabling trigger, item and host prototypes
ZBX-13766
fixed comparison of two large float numbers in expressions
ZBX-13481
fixed incorrect parsing of BITS data type in SNMP response
ZBX-13744
fixed potential shared memory leak when item is removed
ZBX-13742
fixed parsing of the operator "not" in trigger expression
ZBX-13535
fixed trigger recovery expression for 'High error rate' trigger
ZBX-13278
fixed trigger expression for 'Link down' trigger
ZBX-12805
increased command line limit for proc.num checks on hp-ux systems
ZBX-13749
fixed creation of dependent items from item wizard
ZBX-13660
fixed data types passed to is_ushort() for converting PID, port and process number
ZBX-12935,ZBX-13539
fixed displaying of floating point values under the "Latest data" page
ZBX-13579
fixed unnecessary data getting when agent becomes available in the non-collection data period
ZBX-13240
removed duplicating HTML IDs from frontend and fixed SID validation in trigger wizard
ZBX-13685
fixed maintenance entries displayed in list when filter is applied
ZBX-12756
improved configure script to check iconv library
ZBX-13667
added notification in zabbix server log about 'error' in elasticsearch json response
ZBX-13683
fixed multiselect items not being sorted by name
ZBX-13299
fixed autoregistration, discovery and internal notifications not being sent due to uninitialized severity
ZBX-13607
changed ping script to return success also for timeouts
ZBX-12967
fixed slide show refresh interval multiplier menu not working
ZBX-13696
added maximum record limit to old session removal in housekeeper
ZBX-13642
fixed undefined index in user edit form
ZBX-13546
fixed context menu positioning in maps
ZBX-13668
fixed dynamic widget searching for item key in item prototypes
ZBX-13500
fixed fractional values in triggers being misinterpreted without a leading 0
ZBX-13561
fixed incorrectly displayed pie graph when first item has no data
ZBX-13517
fixed undefined index in pie charts
ZBX-13499
fixed checkbox selector in problems table
ZBX-13598
fixed crash when Zabbix process cannot connect to preprocessing service
ZBX-13522
fixed duplicate IDs in trigger expression constructor
ZBX-13489
fixed wrong tab iteration inside graph widget
ZBX-13625
fixed blinking in the problem widget
ZBX-13560
fixed acknowledge notifications being visible in the event popup
ZBX-13298
fixed missing graph after faulty graph edit form submission
ZBX-13487
improved widgets menu icons focus state styles
ZBX-13350
added multiple Zabbix element default paths to output after running ./configure and --help option
ZBX-13509
improved compilation support from source for Solaris and NetBSD
ZBX-13542
fixed http steps on template not inheriting hosts application setting
ZBX-13618
fixed wrong variables order in translatable error message
ZBX-13344
fixed trigger based actions having a default "not in maintenance" condition
ZBX-13613
improved a history syncer when backend elasticsearch is not available
ZBX-13510
fixed error of execution "make dbschema" for NetBSD
ZBX-13544
fixed agent crashes when using regex with 'Log' item for Mac OSX
ZBX-13611
fixed lld rules not always saving their state/error message changes
ZBX-13571
fixed regression that resulted in slow history data queries on partitioned tables
ZBX-13490
fixed autofocus in forms
ZBX-13470
improved searching IPMI items by full name
ZBX-13566
fixed create dashboard button size in dashboard list
ZBX-13464
fixed fullscreen attribute included in host context menu links
ZBX-13424
added possibility to select web items as master items and improved copying of dependent items to destination hosts and templates
ZBX-13573
fixed undefined index message changing Action "Acknowledgment operations" from "Remote command" to "Notify all involved"
ZBX-13570
fixed undefined index in API call
ZBX-13331
removed "recovery" property from action.get API method response
ZBX-13309
fixed displaying of Problem/Recovery time
ZBX-13450
fixed server and proxy compilation problem for Solaris 10
ZBX-13458,ZBX-13494
fixed resolving of the macros in map labels for non-superadmin users
ZBX-13526
fixed widget placeholder jumping instead of resizing while dashboard edit
ZBX-13362
fixed potentially wrong rows deleting by housekeeper in PostgreSQL
ZBX-13506
fixed linked trigger is moved to sibling map element
ZBX-13586
fixed trigger-based event correlation - suspend creation of event if no problems are recovered by it
ZBX-13339
improved deallocation of memory
ZBX-13412
fixed JS error and wrong form behaviour when changing item type, type of information
ZBX-13471
fixed contrast in selected item filters
ZBX-13428
fixed long name of map outside go back button in map widget
ZBX-13340
fixed pie graphs displaying incorrect data
ZBX-13257
fixed display of the latest item in Audit log
ZBX-13447
fixed trigger name readability on map in dark theme
ZBX-11994
changed "awk" to "sed" for getting info about "Last Changed Revision"
ZBX-13360
fixed HTML5 placeholder color that previously appeared like actual input data
ZBX-13351
improved OpenSSL error messages
ZBX-13147
fixed inconsistent number on map navigation tree
ZBX-13537
fixed "Inaccessible user" in Dashboard System status widgets acknowledgement popup
ZBX-13472
fixed description of "Server" and "ServerActive" configuration options
ZBX-13455
added frontend error message when templates cannot be linked to LLD host
ZBX-13538
fixed example configuration for Elasticsearch
ZBX-13434
fixed incorrect trigger dependencies being set after copying triggers to multiple hosts; thanks to Kotaro Miyashita for the patch
ZBX-13513
fixed input maxlength for users media of type script
ZBX-13523
fixed error message for empty TCP response in case agent dropped connection because of access permissions
ZBX-12883
fixed incorrect ordering the list of triggers after saving a map
ZBXNEXT-4150
fixed URL display in hint box and focus styles for radio buttons
ZBX-12940
fixed content does not fit dialog window
ZBX-13342
fixed order by query in frontend Maintenance tab
ZBX-13401
fixed successful items mass update with invalid update interval
ZBX-6167
fixed partial updating in maintenance.update
ZBX-13062
banned using of mutex in threads of metrics collection
ZBX-13236
fixed error message of function parameters parse
ZBX-10433
removed inaccurate configuration default values
ZBX-13398
fixed configure script for Debian GNU/Linux "buster" and "sid" to work with PostgreSQL
ZBX-12754
fixed undefined index error in map import
ZBX-13303
improved display of user media 'Use if severity' indicators
ZBX-13166
fixed daily and yearly notification reports not including current day/last day of leap-year
ZBX-13118
improved readability of emails in action log by splitting them multiline
ZBX-13498
added optional MySQL upgrade patch for "problem" table to drop redundant index after another index that can be used to enforce the foreign key constraint has been created
ZBX-13430
fixed use of uninitialized value ttl when elasticsearch is configured
ZBX-13452
fixed Elasticsearch history storage default value types
ZBX-13248
fixed field trapper_hosts to optional for trapper item.create
ZBX-13307
fixed map scaling and position to the widget left side
ZBX-12941
fixed checkbox overlay's position over the checkbox
ZBX-13465
fixed back button style on the sub-maps
ZBX-13334
fixed translations of Widget parameters window
ZBX-6118
fixed poor performance of changing an item on the template which linked with many hosts
ZBX-13454
fixed placeholder in Administration->Scripts form
ZBX-13403
allowed proxy to execute remote commands on agents using encrypted connection
ZBX-13441
fixed crashes in case of failures (e.g. timeouts) during VMware hypervisor discovery
ZBX-12607
fixed performance of map.get API method and map-related views
ZBX-11391
generated an error if expanding LLD macros results in an empty tag name
ZBX-13300
fixed addJsFile() name
ZBX-13030
removed proxy's ability to export unprocessed history data via loadable modules
ZBXNEXT-3581
dropped plain text protocol support and made header mandatory; fixed IP fragmentation handling by including header in Zabbix get request, Zabbix server/proxy passive check request and frontend request to Zabbix server
ZBX-13194
fixed incorrect processing of zabbix[wcache,value,*] internal check
ZBX-13060
added limitation for meaningless server reconnection attempts to incorrectly configured passive proxy
ZBX-13233
added new memory metrics for Linux platform - "active", "anon", "inactive" and "slabs"; thanks to Tomasz Kłoczko for the original patch
ZBX-12643
improved error log message in case Zabbix server database cannot be used due to empty "users" table
ZBX-11720
fixed memory leak which breaks vfs.fs.size, vfs.fs.inode and vfs.dir.size items if compiled with LeakSanitizer
ZBX-13131
fixed truncated multiline text values from network discovery SNMP checks
ZBX-13117
fixed vfs.dir.size with symbol links on Windows
ZBX-12045
fixed inconsistencies in configure -h output
ZBX-13325
fixed trend.get() method with Oracle backend
ZBX-13223
fixed graphs duplication in graph preview
ZBX-13345
removed SID from URL in screen edit mode
ZBX-13055
fixed problems with DNS resolver interface on NetBSD
ZBX-13214
added support of \0 matching group for regsub and iregsub methods
ZBX-13208
eliminated race condition that caused history collection for newly created items to start before preprocecessing steps finished syncing
ZBX-13246
fixed processing of command line arguments which are longer than 2KB for proc.num and proc.mem items on AIX
ZBX-13130
fixed Zabbix proxy not to generate high network traffic when server does not accept data
ZBX-13288
fixed image ghosting for mass update of map elements
ZBX-11422
fixed compilation warnings under OS X 64bit
ZBX-13276
fixed compatibility issue with Elasticsearch versions starting from 6.0
ZBX-13196
fixed setting of transaction error flag in commit operation
ZBX-13221
fixed trimming of values in overlay dialogues
ZBX-13221
added "Timeout" validation in web scenario step overlay dialogue
ZBX-12389
fixed latest data host group filter
ZBX-13119
removed 'empty' button in trigger selection window for map constructor item modal form
ZBX-12661
fixed Low-level discovery of dependent items not working after being edited and resulting in undefined offset error or foreign key constraint violation
ZBX-13254
fixed 'skip' parameter behaviour for log[], log.count[], logrt[], logrt.count[] items in case log files initially do not exist
ZBX-13253
fixed losing the 1st record by log[] and logrt[] items if 'skip' parameter is used and log file initially is empty
ZBX-13275
fixed slow housekeeping of events on MySQL
ZBX-13264
fixed Zabbix agent compilation on OS/X
ZBX-13245
fixed IP fragmentation handling in Zabbix server response to Zabbix proxy
ZBX-13258
fixed misaligned user group permission controls
ZBX-13031
fixed Java gateway compilation without libpcre
ZBX-12963
fixed passing argument to external check item that contain literal $
ZBX-12991
removed default values for "active_since" and "active_till" fields in maintenance.create API method
ZBX-13270
fixed default selection of the required host permissions radio in the global scripts form
ZBX-12758
fixed slow housekeeping of events due to missing index on foreign key
ZBX-11305
fixed color and label for event status on event details page
ZBX-13238
fixed spelling of Elasticsearch
ZBX-13056
fixed incorrect positioning of context menu when it is opened using keyboard
ZBX-13241
fixed memory leak on Zabbix server when executing remote commands through proxy
ZBXNEXT-4139
fixed displaying of the eventlog severitites and severities in trigger map element
ZBX-13178
fixed ipc_path value in error message
ZBX-12251
fixed possibility of trigger status getting stuck in PROBLEM or OK state due to transaction error in history synchronization, added deadlock to a list of recoverable errors
ZBX-12251
fixed possibility that new history values are lost and not processed by Zabbix server or Zabbix proxy due to recoverable transaction error
ZBX-12996
fixed radio button and label inconsistency in maintenance period configuration
ZBX-12895
improved performance of DB patch for updating data in the alerts table
ZBX-12082
fixed possibility to select triggers with same name in multiselect
ZBX-12983
fixed compilation warnings under Windows
ZBX-10578
fixed redundant init_result() calls; thanks to MATSUDA Daiki for the patch
ZBX-12793
fixed system compiler checks during source configuration
ZBX-11970
fixed style for some enumerators and structure type declarations

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.

References

Zabbix 4.0 Manual

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