Release Notes for Zabbix 5.2.7

Zabbix Team is pleased to announce the availability of Zabbix 5.2.7.

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

This document contains the release notes for Zabbix 5.2.7. Download it from download.

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-6517 Added {#VM.FOLDER} macro with chain of vm parent folders to the vmware vm discovery Proxy Server
ZBXNEXT-6662 Increased field size to 2000 characters in web scenario variables and web scenario step variables and post fields Frontend
ZBXNEXT-4910 Added severity in problem real-time export protocol Server
ZBXNEXT-6589 Added Job discovery, backup process items in Database discovery, macros, and value map Templates
ZBXNEXT-6497 Added read/write locking to value cache Server
ZBXNEXT-6504 Added Templates "TiDB by HTTP", "TiDB TiKV by HTTP" and "TiDB PD by HTTP" Templates
ZBXNEXT-6508 Added template for APC UPS Symmetra RX Templates
ZBXNEXT-6571 Added templates for APC UPSs Galaxy 3500, Smart-UPS, Smart-UPS SRT, Symmetra RM Templates

Bug Fixes

ZBX-19424 Fixed trigger handling failing if host name looks like a number API
ZBX-19139 Fixed memory errors in cmdline parsing on freebsd Agent
ZBX-18891 Fixed "Cancel" button disappearing on last setup step Frontend
ZBX-19358 Fixed memory leak in case of duplicate vmware hv uuid Proxy Server
ZBX-19114 Fixed slow detection of vmware hv multipath values for medium and huge vc instances Proxy Server
ZBX-19248 Fixed retrieving of all data from separate database tables inside of API methods when empty value for filter is passed API
ZBX-19320 Fixed SAML advanced configuration ignores "baseurl" option; added custom option "use_proxy_headers" Frontend
ZBX-19300 Updated jquery version Frontend
ZBX-19340 Optimized history cache to reduce storage of metadata-only records Server
ZBX-18524 Improved preprocessing diagnostic information to include oldest values in queue and totals to include done, queued, processing and pending Proxy Server
ZBX-19291 Fixed memory error when linking host prototypes Server
ZBX-19359 Fixed error in logsource function due to empty source Proxy Server
ZBX-19313 Improved performance by removing redundant lastclock update in configuration cache Proxy Server
ZBX-19208 Fixed imprecise ns on windows Agent
ZBX-19065 Fixed Zabbix agent 2 logging if the file is moved or removed Agent
ZBX-19334 Removed redundant ListenIP parameter in server's configuration file Installation
ZBX-19307 Improved performance of history syncers by reducing time spent in locks when syncing history and receiving new history from proxy Server
ZBX-19038 Fixed lld manager not to process lld rules on same host in parallel to avoid duplicated item keys being discovered; fixed crash when duplicated item key on same host exists Proxy Server
ZBX-19324 Fixed possible deadlocks between configuration and history syncers on proxy Proxy
ZBX-19209 Fixed panic in proc plugin for Zabbix agent 2 Agent
ZBX-19241 Stopped proxy from overwriting local lastlogsize and mtime Proxy
ZBX-19321 Fixed missing event tags in case of multiple problems Server
ZBX-19063 Fixed logging for unsupported windows service command in Zabbix agent 2 Agent
ZBX-19099 Fixed Zabbix agent 2 windows services plugin second parameter Agent
ZBX-18883 Fixed logrt[] monitoring with copytruncate rotation Agent
ZBX-19274 Fixed semaphore not being cleaned up on Solaris when terminating Zabbix sender Agent Proxy Server
ZBX-19233 Fixed potential loss of original error when reading vmware events Proxy Server
ZBX-18701 Fixed syntax mistakes in Template DB MySQL, renamed LLD rule to Database discovery Templates
ZBX-19159 Added postponing of recovery operation when problem operation still executes, fixed memory leak while saving tags returned by webhook Server
ZBX-19102 Fixed conversion of EVENT.NAME to EVENT.RECOVERY.NAME in recovery opmessage Installation
ZBX-19253 Removed ICMP checks, moved items to another application, changed update interval, added "Discard with heartbeat" preprocessing in APC UPS templates Templates
ZBX-19088 Fixed overload memory with unused vmware events Proxy Server
ZBX-18673 Fixed JS in Slack media and updated documentation Templates
ZBX-18372 Fixed additional word before parameters in fatal error message text Frontend
ZBX-19210 Fixed css file versioning for custom themes Frontend
ZBX-18912 Fixed escalation message is using template message instead of custom message in actions Server
ZBX-18667 Fixed code spelling in templates Templates
ZBX-17454 Changed the unit of data item "" in PostgreSQL template Templates
ZBX-19195 Fixed endless loop in graph widget processing if widget size is too small Frontend
ZBX-18809 Changed formula for latency in Elasticsearch template Templates

Installation and Upgrade Notes


See Zabbix指导手册。 for full details.


See 升级指南 for upgrade options and instructions. For version specific upgrade notes, see Upgrade notes for 5.2.7.

Commercial support

Zabbix Company provides a full range of Professional Services. We also provide trouble-free 升级服务 for easy migration from earlier versions of Zabbix. Please 联系我们 for pricing and more details.


Zabbix 5.2 Manual