asked to enter a string value or select the value from a dropdown of pre-determined options. Oracle DB deprecated The support for Oracle as a backend database has been deprecated and is expected to be passive checks with a worker thread • alert manager - alert queue manager • alert syncer - alert DB writer • alerter - process for sending notifications • availability manager - process for host availability process for handling calculated checks requiring a database connection • history syncer - history DB writer • housekeeper - process for removal of old historical data • http agent poller - asynchronous

supports files with a UTF-8 byte-order mark (BOM). 18 Cosmos DB monitoring The template Azure by HTTP now also works with Azure Cosmos DB for MongoDB. You can get this template: • In Data collection monitor” to “Dependent item”; • items with db.odbc.discovery key have been turned into items dependent on the db.odbc.get item • new item has been added - MSSQL DB ’{#DBNAME}’: Recovery model, which returns directory misc/init.d. Server process types • alert manager - alert queue manager • alert syncer - alert DB writer • alerter - process for sending notifications • availability manager - process for host availability

about non-existent indexes! Database upgrade scripts are located in directory upgrades/dbpatches/1.8/<db engine>: • MySQL: upgrades/dbpatches/1.8/mysql/patch.sql • Oracle: upgrades/dbpatches/1.8/oracle/patch data writing to the database, resulting in notable improvement on powerful hardware. By default 4 DB syncers are started. • Made poller balancing more intuitive by making them take items from a single main configuration file. More examples have been added as well. 8.4.1 DB2 support Support for additional database backend - IBM DB2 - has been added. 8.4.2 Extended user macro support User macros can

updating the history cache. Timescale DB 2.X Timescale DB 2.X versions are now officially supported in addition to Timescale DB 1.X. Please note, that Timescale DB 2.X works only with PostgreSQL 11 or directory misc/init.d. Server process types • alert manager - alert queue manager • alert syncer - alert DB writer • alerter - process for sending notifications • configuration syncer - process for managing for discovery of devices • escalator - process for escalation of actions • history syncer - history DB writer • housekeeper - process for removal of old historical data • http poller - web monitoring

must be applied. ODBC monitoring without DSN A new connection string parameter has been added to db.odbc.* items. Now Database monitor items can be configured in two ways: • Using the data source name commands, problem update notifications and internal notifi- cations. Databases Support of IBM DB2 dropped The IBM DB2 database can no longer be used as a back-end database for Zabbix. Minimum required versions App Elasticsearch Cluster by HTTP - native template to monitor Elasticsearch. ClickHouse • Template DB ClickHouse - collects node metrics from ClickHouse HTTP interface using HTTP agent. (see description)

Additionally, an upper limit for the supported DB versions has been introduced for all databases. Though Zabbix may still work with newer releases, the maximum supported DB version indicates the latest version misc/init.d. Server process types 27 • alert manager - alert queue manager • alert syncer - alert DB writer • alerter - process for sending notifications • availability manager - process for host availability handling calculated and internal checks requiring a database connection • history syncer - history DB writer • housekeeper - process for removal of old historical data • http poller - web monitoring

unsupported database version is detected. It is now possible, though not recommended, to turn off DB version check by modifying AllowUnsupportedDBVersions configuration parameter for the server or proxy upgrade auditlog and auditlog_details DB tables will be replaced by the new table auditlog with a different format. Existing audit log records will be deleted. Supported DB versions check Zabbix server and now supports files with a UTF-8 byte-order mark (BOM). Cosmos DB monitoring The template Azure by HTTP now also works with Azure Cosmos DB for MongoDB. You can get this template: • In Configuration →

directory misc/init.d. Server process types • alert manager - alert queue manager • alert syncer - alert DB writer • alerter - process for sending notifications • availability manager - process for host availability process for handling calculated checks requiring a database connection • history syncer - history DB writer • housekeeper - process for removal of old historical data • http poller - web monitoring process for discovery of devices • heartbeat sender - proxy heartbeat sender • history syncer - history DB writer • housekeeper - process for removal of old historical data • http poller - web monitoring

user@oracle_host "rm -rf /tmp/zabbix_images" IBM DB2 shell> db2 "create database zabbix using codeset utf-8 territory us pagesize 32768" shell> cd database/ibm_db2 shell> db2batch -d zabbix -f schema.sql # 下 面 步 不 需 要 执 行 shell> db2batch -d zabbix -f images.sql shell> db2batch -d zabbix -f data.sql Note: Zabbix server,Zabbix proxy,Zabbix web server 必须将字符集设置为 UTF-8。否则，来自 Zabbix 的文本信息将被 IBM DB2 服 务器解析为非 UTF-8 字符集，并在 server running Zabbix frontend. Otherwise text information from Zabbix will be interpreted by IBM DB2 server as non-UTF-8 and will be additionally converted on the way from Zabbix to the database and

multiple rows/columns A new database monitor item has been added: db.odbc.get[unique_description,data_source_name] Compared to the db.odbc.select[] item that has already been available in previous versions item. The new item may also be used for low-level discovery using ODBC SQL queries. Compared to the db.odbc.discovery[] item from previous versions, this item does not define low-level discovery macros with HTTP agent remotely. MySQL/MariaDB • Template DB MySQL by Zabbix agent - see requirements for operating this template. PostgreSQL • Template DB PostgreSQL - see requirements for operating this template