Improved triggers In Zabbix 1.8.2, some trigger functions and expressions have gained new features. 6.2.1 Time-shifting in triggers Trigger functions min, max, avg, last and count now support additional expression, previously all choices were displayed always. Now dropdown list is filtered so that only functions that are valid for the chosen item type are available. 8.1.7 List of all hosts available in hostgroup it. 8.3.3 Zabbix server improvements Zabbix server performance has been improved for trigger functions last and prev by not retrieving redundant information from the database. Memory usage has been

the amount of persistent connections and to Oracle backend and changed to suggested Oracle access functions 10.1.1 New translations • Bulgarian 10.1.2 Completed translations The following translations convert database data to new nodeid -R --runtime-control perform administrative functions -h --help give this help -V --version display version number Note: Runtime control is not supported -i,-d,-s,-x functions). To distinguish service names of instances, each service name will include the Hostname value from the specified configuration file. Windows agent only (functions) -i --install

extract. For these purposes, the new version comes with a new concept of macro functions. Currently, two macro functions are supported: • regsub - substring extraction by a regular expression match (case • iregsub - substring extraction by a regular expression match (case insensitive) These macro functions are supported for the {ITEM.VALUE} and {ITEM.LASTVALUE} macro values in trigger names, trigger descrip- virtual machine discovery item keys vmware.hv.discovery and vmware.vm.discovery. 5.17 Trigger functions The count() function now supports regexp and iregexp operators for all item types. It is now possible

Encryption section. 5.3 Predictive trigger functions Predictive capabilities are now available via forecast() and timeleft() trigger functions. These functions analyse item history and return the future eliminating consequences afterwards. For more information, see: • Predictive trigger functions • Supported trigger functions (entries for ’forecast’ and ’timeleft’) 5.4 SMTP authentication options Configuring undocumented registry keys. 24 5.22 Function improvements forecast() and timeleft() predictive functions have been added. A percentile() trigger function has been added, which returns the P-th percentile

{host:key.func(param)} macro syntax. Similarly to map labels, only avg(), last(), max() and min() functions with seconds as parameter are supported within this macro in graph names. Value mapping is supported optional parameters in trigger functions. For example, trigger function ”last(#1)” can be written as ”last()”, ”last(#1,1h)” - as ”last(,1h)”. It also works for functions of calculated items. 5.10 Network sensitive and use hys- teresis. All templates have been updated to use suffixes and aggregate functions. All OS templates have been updated to include memory graph. 15 5.20 Network discovery changes

displays fatal error if mbstring PHP functions are not enabled. There are no string wrapper functions anymore; they have been replaced by string and/or mbstring functions accordingly. Additionally, the mbstring naming for the use of filter has been introduced. If previously Filter stood for both show and hide functions (with only very tiny icons indicating the direction), now separate Show filter and Hide filter (default is /usr/local/etc/zabbix_server.conf) -R --runtime-control perform administrative functions -h --help give this help -V --version display version number Note: Runtime control is not supported

(default is /usr/local/etc/zabbix_server.conf) -R --runtime-control perform administrative functions -h --help give this help -V --version display version number Note: Runtime control is not supported --runtime-control Perform administrative functions. See runtime control. Windows agent only -m --multiple-agents Use multiple agent instances (with -i,-d,-s,-x functions). To distinguish service names of name will include the Hostname value from the specified configuration file. Windows agent only (functions) -i --install Install Zabbix Windows agent as service -d --uninstall Uninstall Zabbix Windows

regular items and item prototypes. Substring extraction of low-level discovery macro value Macro functions are now supported with low-level discovery macros, allowing to extract a certain part of the macro field of a trigger prototype: For more information on macro function syntax, see: Macro functions. Macro functions are supported in all locations where low-level discovery macros can be used, except for value. Triggers Time triggers processed by history syncers The processing of time-based trigger functions such as nodata(), date(), dayofmonth(), dayofweek(), time() and now() has been moved from timer

filter allowing to view triggers of more than one host, greatly increasing the usability of such functions as mass update. Also, the dropdowns of host and host group selection have been removed as these maintenance. JSONPath preprocessing Quoted numeric values are now accepted by the JSONPath aggregate functions (sum, min, max, etc.) in item value preprocessing. It means that the values are converted from (default is /usr/local/etc/zabbix_server.conf) -R --runtime-control perform administrative functions -h --help give this help -V --version display version number Note: Runtime control is not supported

to create a very flexible setup. 5 What’s new in Zabbix 5.2.0 Trigger functions for long-term analytics New trigger functions have been added allowing to compare data from absolute periods (hour, day day, week, month, year) and notify user if there is a significant difference. The new functions are: • trendavg - average of trend values for period • trendcount - count of trend values for period • minimum of trend values for period • trendsum - sum of trend values for period Note that the new functions return a result based on trend values, not history. For example, you may want to know if there