Release Notes for Zabbix 5.2.7rc1

21 June 2021

Zabbix Team is pleased to announce the availability of Zabbix 5.2.7rc1.

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 5.2.7rc1. 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
ZBXNEXT-6662	Increased field size to 2000 characters in web scenario variables and web scenario step variables and post fields
ZBXNEXT-4910	Added severity in problem real-time export protocol
ZBXNEXT-6589	Added Job discovery, backup process items in Database discovery, macros, and value map
ZBXNEXT-6497	Added read/write locking to value cache
ZBXNEXT-6504	Added Templates "TiDB by HTTP", "TiDB TiKV by HTTP" and "TiDB PD by HTTP"
ZBXNEXT-6508	Added template for APC UPS Symmetra RX
ZBXNEXT-6571	Added templates for APC UPSs Galaxy 3500, Smart-UPS, Smart-UPS SRT, Symmetra RM

---

Bug Fixes

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

---

Installation and Upgrade Notes

Installation

See Zabbixマニュアル for full details.

アップグレードサービス

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 営業への問い合わせ for pricing and more details.

• Zabbix Enterprise Support
• Zabbix トレーニング
• Zabbix Development Services

---

References

Zabbix 5.2 Manual