Poznámky k vydání verze Zabbix 6.4.0rc2

21 February 2023

Zabbix tým s potěšením oznamuje dostupnost nové verze Zabbixu 6.4.0rc2.

Zabbix je podnikové open source řešení pro distribuovaný monitoring. Zabbix je vydáván pod licencí GPL, takže je zdarma pro komerční i nekomerční použití. Úplný text licence je k dispozici na adrese http://www.gnu.org/copyleft/gpl.txt.

Tento dokument obsahuje poznámky k verzi Zabbix 6.4.0rc2. Stáhnout si ho můžete v sekci ke stažení.

Následující sekce podrobně popisují vydání a poskytují důležité nebo jiné informace, které doplňují hlavní dokumentaci.

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Nové vlastnosti a vylepšení

ZBXNEXT-8087	Reverted removal of template nesting API Frontend Server
ZBXNEXT-8257	Removed aggregate function labels from the Graph widget legend Frontend
ZBXNEXT-8262	Updated soft minimal threshold for MySQL to version 8.0.30 Proxy Server
ZBXNEXT-8105	Fixed build when cURL library version is less than 7.61.0 Proxy Server
ZBXNEXT-7836	Added modal form for maintenance periods in Data collection->Maintenance Frontend Instalace
ZBXNEXT-6796, ZBXNEXT-8203	Added support for notification macros in the Script media type parameters API Frontend Server
ZBXNEXT-1111	Added template versioning fields API Frontend
ZBXNEXT-8249	Updated attributes in the template files Šablony
ZBXNEXT-8165	Added the possibility to specify decimal places in Top hosts widget Frontend
ZBXNEXT-8246	Added support of bits to SNMP preprocessing API Frontend Proxy Server
ZBXNEXT-8105	Added support for streaming metrics and events to external systems over HTTP API Frontend Instalace Server
ZBXNEXT-8166	Reworked the preprocessing manager to use worker threads instead of processes Proxy Server
ZBXNEXT-8087	Removed template nesting API Frontend Server
ZBXNEXT-8204	Added support of PHP 8.2 API Frontend
ZBXNEXT-8091	Added additional SSH options to ssh.run[] item as the 5th parameter Proxy Server
ZBXNEXT-8250	Updated soft minimal threshold for MySQL to version 8.0.29 Proxy Server
ZBXNEXT-8074	Implemented CSRF tokens instead of SIDs Frontend Server
ZBXNEXT-8236	Deprecated support for old numeric type Frontend Server
ZBXNEXT-7923	Added templates for BMC Control-M integration Šablony
ZBXNEXT-7775	Added Veeam Backup and Replication templates Šablony
ZBXNEXT-7605	Replaced the column "Ack" with "Update" in the problem lists Frontend
ZBXNEXT-8213	Added a database upgrade patch for renamed Actions filters Instalace
ZBXNEXT-1354	Implemented host filtering by status Frontend
ZBXNEXT-8054	Updated MariaDB maximum supported version to 10.10 Proxy Server
ZBXNEXT-7951	Improved import configuration by changing UI, matching logic and unlinking logic API Frontend
ZBXNEXT-8112	Added Line media type Šablony
ZBXNEXT-8197	Added TimescaleDB v2.9.x support Server
ZBXNEXT-7962	Fixed interfaces discovery rules in OPNsense, PFSense and TrueNAS templates Šablony
ZBXNEXT-8115	Updated system.sw.packages key in Linux templates Šablony
ZBXNEXT-3100	Added the requirement for users to enter current password when changing their own password API Frontend
ZBXNEXT-7964	Introduced two-level event/problem hierarchy: causes and symptoms API Frontend Instalace Server
ZBXNEXT-7977	Added Azure Microsoft SQL templates Šablony
ZBXNEXT-6848	Added support for system.sw.os on Windows and a new system.sw.os.get key for Zabbix agent and Zabbix agent 2 items Frontend Agent
ZBXNEXT-7835	Added modal form for actions in Alerts->Actions Frontend
ZBXNEXT-4428	Optimized SNMP discovery and data collection, added GetBulk support API Frontend Proxy Server
ZBXNEXT-7889	Transitioned to using vfs.fs.get key for filesystem discovery in Zabbix agent based templates Šablony
ZBXNEXT-7963	Added a hint box for "Enable HTTP authentication" parameter; added confirmation dialog box for enabling HTTP authentication Frontend
ZBXNEXT-8076	Added prof_enable and prof_disable commands for profiling Proxy Server
ZBXNEXT-2580	Implemented new Zabbix agent and Zabbix agent 2 key system.sw.packages.get Agent
ZBXNEXT-6119	Added the option to retrieve all JSON data via the docker.container_info key in Zabbix agent 2 Docker plugin Agent
ZBXNEXT-8085	Removed the deprecated property "alias" from user.get, user.create, user.update methods and the "user" property from the user.login method API
ZBXNEXT-7924	Switched templates to use proc.get key for discovery of processes Šablony
ZBXNEXT-7886	Added Cisco Nexus 9000 Series Switches template Šablony
ZBXNEXT-276	Added LDAP and SAML user provisioning API Frontend Instalace Server
ZBXNEXT-8058	Reduced locking between history syncers, trappers and proxy pollers Proxy Server
ZBXNEXT-8051	Added new authentications methods for API calls API
ZBXNEXT-4714	Implemented filters for Action log page; and widget and export to CSV file for Action log page Frontend Instalace
ZBXNEXT-6844	Added a Cisco Meraki template Šablony
ZBXNEXT-7903	Added templates for Azure PostgreSQL servers Šablony
ZBXNEXT-7949	Added a suffix "by" in template names Šablony
ZBXNEXT-7948	Optimized preprocessing manager cache refresh Proxy Server
ZBXNEXT-7469	Simplified creation of dashboard widgets; moved widgets to modules; updated modules framework Frontend
ZBXNEXT-6470, ZBXNEXT-6980	Implemented audit logging of item and item prototype API objects API Frontend Šablony
ZBXNEXT-8040	Added object based JSON parsing and JSONPath optimizations Proxy Server
ZBXNEXT-7940	Added template OS processes by Zabbix agent Šablony
ZBXNEXT-7953	Added VMware tags support for vSphere versions older than 7U2 Proxy Server
ZBXNEXT-7122	Added detection of compressed chunks in history or trend tables, and warnings that suggest enabling housekeeping overrides accordingly Frontend Server
ZBXNEXT-8018	Added token authentication in Template GitLab by HTTP Šablony
ZBXNEXT-7512	Implemented new context menu for host, item and trigger in the Monitoring section Frontend
ZBXNEXT-7972	Implemented name for trigger URL Frontend Server
ZBXNEXT-6401	Added new vmware keys vmware.datastore.perfcounter and vmware.hv.diskinfo.get Proxy Server
ZBXNEXT-8038	Improved layout for audit log report utilising two-column layout Frontend
ZBXNEXT-7816	Added support of PostgreSQL 15 Proxy Server
ZBXNEXT-7970	Added support of TimescaleDB 2.8 Proxy Server
ZBXNEXT-7902	Added templates for Azure MySQL servers Šablony
ZBXNEXT-7920	Improved value cache not to drop items from cache when no new value has arrived in 24 hours Server
ZBXNEXT-8035	Added override for file system discovery trigger in f5 template Šablony
ZBXNEXT-7912	Improved media type configuration API Frontend Instalace Server
ZBXNEXT-3290	Added incremental proxy configuration sync API Proxy Server
ZBXNEXT-7971	Increased max length of the "URL (after login)" field API Frontend Instalace
ZBXNEXT-7931	Removed heartbeats support from Zabbix proxy Proxy Server
ZBXNEXT-2557	Added support of Zabbix proxies with legacy version API Frontend Instalace Proxy Server Šablony
ZBXNEXT-6797	Increased length of host metadata Agent Instalace Server
ZBXNEXT-3496	Added ability to add own links to Host and Event context menu API Frontend Server
ZBXNEXT-6181	Added functionality to remove SQLite3 DB file on proxy version increase Proxy
ZBXNEXT-1616	Added monitoring of mount point options for Unix-like OSes Agent
ZBXNEXT-7661	Implemented thresholds for dynamic background color in item value widget Frontend
ZBXNEXT-7830	Implemented better menu structure Frontend
ZBXNEXT-7832	Renamed setting "Dynamic item" to "Enable host selection" for URL, Plain text, Graph prototype, Item value, Graph classic widgets Frontend
ZBXNEXT-7852	Added incremental active check refresh for active agents Documentation Agent Proxy Server
ZBXNEXT-6406	Removed requirement of host interface for server-originated checks Frontend Proxy Server

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Oprava chyb

ZBX-22589	Added new limits for JS objects Proxy Server
ZBX-22588	Fixed unauthorised file system access when using cURL Proxy Server
ZBX-22587	Fixed JSON validation not detecting invalid unicode characters and out of bounds access with JSONPath on invalid unicode character Proxy Server
ZBX-22384	Fixed Zabbix agent 2 build on macOS Agent
ZBX-22375	Prevented copying of discovered items when full cloning the host; fixed inability to full clone the host with an item which depends on a web scenario item Frontend
ZBX-22271	Removed module templates Šablony
ZBX-22346	Fixed item value dynamic background not working with double-digit negative values Frontend
ZBX-22352	Added missing CSRF token for macros expansion in maps Frontend
ZBX-22333	Added CSRF token to the 'Make cause' and 'Make symptom' problem actions Frontend
ZBX-22078	Fixed the crash in calculated items when using tag filter on 32-bit systems Server
ZBX-22280	Fixed the symptom counter for cause problem events in the Problems section and Problems widget Frontend
ZBX-22189	Fixed Zabbix server crash appearing when only item tags change between LLD runs Server
ZBX-21597	Optimized Remote Zabbix server health template to spread load across workers and updated descriptions Šablony
ZBX-21602	Optimized Zabbix server health template to spread load across workers and updated descriptions Šablony
ZBX-22032	Added a cookie engine to HTTP checks Proxy Server
ZBX-22222	Fixed applying item value maps on already converted values Frontend
ZBX-22061	Fixed custom query parameter read on an empty parameter for Oracle plugin in Zabbix agent 2 Agent
ZBX-21227	Improved error logging during Zabbix agent start as Windows service Agent
ZBX-22178	Fixed action operations being executed on the current host if only a host group is selected Server
ZBX-22189	Fixed LLD Zabbix server crash Server
ZBXNEXT-7541	Added modal copy form for items, triggers and graphs Frontend
ZBX-21538	Fixed history.get API method blocking drop_chunks requests during housekeeping API
ZBX-21956	Fixed the severity sign overlapping the trigger name in the map element configuration Frontend
ZBX-22215	Fixed incorrectly quoted function parameter parsing Server
ZBX-22118	Fixed remote command execution sequence in Zabbix agent 2 Agent
ZBX-21556	Updated Etcd by HTTP template to comply with Etcd v3.5 Šablony
ZBX-22133	Fixed closed pipe detection for communication with plugins in Windows Agent
ZBX-21936	Fixed actions not being displayed in the Action log widget Frontend
ZBX-22164	Fixed quote and unquote methods for trigger functions Frontend
ZBX-21254	Removed kernel.maxproc from processes graph in Linux by Zabbix agent templates Šablony
ZBX-21754	Improved value cache warmup when retrieving two last values with 1 day update interval Server
ZBX-22043	Fixed the crash when array index in JSONPath is negative or large Proxy Server
ZBX-22077	Fixed the Sign out link not working consistently in Mozilla Firefox Frontend
ZBX-21862	Updated the tablespaces query for Oracle plugin in Zabbix agent 2 Agent
ZBX-21665	Fixed SMART plugin infinite loop for Zabbix agent 2 Agent
ZBX-19138	Fixed Redis plugin configuration in Zabbix agent 2 configuration files Agent
ZBX-21592	Moved some static items under LLD rules to optimize Oracle by ODBC template Šablony
ZBX-21069	Fixed SNMP max_vars not backing off when generr is received Proxy Server
ZBX-21889	Fixed warnings being shown even after overrides have been enabled for trends or history tables with compressed chunks Frontend
ZBX-21563	Changed the order in which escalation steps and recovery operations are executed Frontend Server
ZBX-22017	Fixed the Map navigation tree widget inability to save the order when the depth levels get changed Frontend
ZBX-21961	Removed the unnecessary "Command:" label for message actions on the Event details page Frontend
ZBX-21783	Fixed Zabbix JS timeout validation
ZBX-21720	Fixed trends function cache size estimation and overallocation handling Server
ZBX-21713	Fixed retrieval of numeric column width when Oracle DB is used Proxy Server
ZBX-22126	Fixed trends being deleted from cache and retrieved from the database when the data older than 1 hour is received Server
ZBX-22075	Fixed the crash when Elasticsearch is used Proxy Server
ZBX-21826	Fixed a dummy module Makefile to use cc and compile on FreeBSD Instalace
ZBX-22015	Fixed provisioning of new user when group mapping contains duplicate groups API
ZBX-21950	Fixed script items to stop requiring host interface during template linkage Server
ZBX-21890	Fixed config.dbversion_status containing second empty object on PostgreSQL without TSDB Server
ZBX-22138	Fixed the inability to delete a group from a host prototype API
ZBX-21540	Moved some static items under LLD rules to improve performance of Oracle by Zabbix agent 2 template Šablony
ZBX-21587	Added metrics for optimizing dependent items preprocessing in Jenkins template Šablony
ZBX-22110	Fixed memory leak in Zabbix server in case of monitoring VMware Proxy Server
ZBX-21288	Renamed LLD macro 'DG_NAME' to 'DGNAME' and fixed preprocessing JSONPath in Oracle by Zabbix agent 2 template Šablony
ZBX-22071	Extended description for OPSGenie media type Šablony
ZBX-20845	Fixed SNMP interface availability in case of wrong credentials Proxy Server
ZBX-22224	Fixed broken JSON generation by Zabbix internal stats Server
ZBX-20110	Added single field search option to Oracle archive.info, ts.stats, pdb.info, cdb.info and diskgroups.stats keys for Zabbix agent 2
ZBX-21441	Added override to skip metadata collection on zfs and btrfs for nix templates Šablony
ZBX-22016	Fixed host.get API method not returning any results for hosts with no interfaces when filtering by "hostid" API
ZBX-21985	Fixed LLD rules in AWS by HTTP template Šablony
ZBX-21927	Fixed crash on Oracle database when connection is lost Proxy Server
ZBX-22005	Fixed inability to update the template with dependent item prototypes using the configuration.import when the template is linked to a host prototype API
ZBX-22013	Fixed incorrect possibility to change the password for a guest user Frontend
ZBX-21300	Fixed high CPU usage when using the net.tcp.socket.count key on Windows Agent
ZBX-21904	Fixed the possibility to add value mappings from templates in the mass update form Frontend
ZBX-21793	Fixed the error message for "diaginfo" runtime command Server
ZBX-22042	Fixed the inability to get existing group prototypes by hostprototype.get API method when using Oracle database API
ZBX-21221	Increased the character limit of task_result.info Instalace
ZBX-21696	Fixed Windows Zabbix agent 2 Unicode path support for log* items Agent
ZBX-21872	Fixed VMware HV missing multipath data for some datastores Proxy Server
ZBX-21903	Fixed Zabbix agent 2 timeout behavior for net.tcp.port item Agent
ZBX-21039	Fixed the Readme in PostgreSQL by Zabbix agent 2 template Šablony
ZBX-21922	Fixed expression macros to use corresponding item keys Server
ZBX-21806	Fixed fatal PHP error in cases when an incorrect variable type for controller action is given Frontend
ZBX-21753	Fixed graphs not loading in kiosk mode Frontend
ZBX-21789	Fixed the inability to save an SVG graph with override missing data value "Last known" Frontend
ZBX-21472	Fixed incorrect problem period visualisation in graph widget Frontend
ZBX-20413	Fixed the behaviour of paging when a filter or sub-filter is applied Frontend
ZBX-21206	Updated plugin support dependency for Zabbix agent 2 Agent
ZBX-22014	Fixed fatal error in SCIM authentication API
ZBX-20397	Fixed draggable object alignment Frontend
ZBX-20356	Fixed Zabbix agent 2 to remove and re-add performance counters on failed collection and to keep the query always open Agent
ZBX-21296	Updated ORACLE plugin, ORACLE ODBC and Zabbix agent 2 template documentation grant select variables and added new grant Agent Šablony
ZBX-21595	Optimized RabbitMQ node templates Šablony
ZBX-21884	Changed system.sw.packages[<package>,<manager>,<format>] to system.sw.packages[<regexp>,<manager>,<format>] Frontend
ZBX-21594	Optimized RabbitMQ cluster templates Šablony
ZBX-20050	Fixed broken macro value and type input when changing to/from inherited macros Frontend
ZBX-21864	Fixed fatal error in the system warning page Frontend
ZBX-22001	Re-enabled response decompression support (HTTP header "Accept-Encoding") in web monitoring (reversion of ZBX-21765) Proxy Server
ZBX-22000	Fixed and/or evaluation in LLD filters/overrides Server
ZBX-21997	Fixed parsing JSON starting with whitespace and empty array/object JSONPath output Proxy Server
ZBX-21943	Fixed loss and latency checks in the Cisco Meraki template Šablony
ZBX-21601	Added optimization for LLD preprocessing by splitting the master item into sub metrics Šablony
ZBX-16432	Removed the ability to import a graph with an empty name and added graph name length validation up to 128 characters API Frontend
ZBX-21761	Added HA manager timeout checks and restart in standby mode Server
ZBX-21373	Fixed the Zabbix agent sometimes crashing when enumerating system processes on OpenBSD Agent
ZBX-21929	Fixed widgets' field "type" Šablony
ZBX-17419	Optimized API queries when searching through names in hosts and items tables API Server
ZBX-21631	Changed UUIDs of active Zabbix agent availability metrics in Windows and Linux templates Šablony
ZBX-21818	Added escaping of macro values in script item parameters Server
ZBX-21830	Fixed syntax of a message identifier in the "In-Reply-To e-mail" header field Server
ZBX-21828	Fixed undefined index "suppress_until" in the "Problems by severity widget" Frontend
ZBX-21816	Fixed an incorrect "i" icon alignment in "Compact view" info column of the Problems section Frontend
ZBX-19813	Reworked interface updates in template linking and LLD Server
ZBX-20320	Fixed order of checkboxes in User role view; added vertical display to CCheckBoxList; removed CSeverityCheckBoxList Frontend
ZBX-21869	Fixed database upgrade from 5.0 on setups requiring primary keys for tables
ZBX-21620	Changed an update interval for a "passwd checksum" item in OS templates to 15m Šablony
ZBX-21825	Improved history syncer performance Server
ZBX-21785	Updated "Actions checkboxes" in Audit log form filter for User directory and Autoregistration Frontend
ZBX-21765	Removed HTTP header "Accept-Encoding" from defaults in a web scenario step request Server
ZBX-21715	Fixed Zabbix JS (zabbix_js) crash when parsing short version of "timeout" option -t
ZBX-21616	Fixed error due to non-existent macros in custom expressions Server
ZBX-21786	Fixed "invalid timeout" error occurring after removal of script item parameters Proxy Server
ZBX-21823	Fixed "vfs.fs.inode" and "vfs.fs.get" to handle the file systems with zero total inodes count Agent
ZBX-22050	Fixed spoofing X-Forwarded-For request header so that it allows to access the frontend in maintenance mode Frontend
ZBX-21588	Optimized template k8s nodes by HTTP Šablony
ZBX-20478	Fixed script for k8s cluster state Šablony
ZBX-20296	Fixed swap trigger function for Windows and modules by Zabbix agent templates Šablony
ZBX-20392	Added close/ack/unack of events for OPSgenie media Šablony
ZBX-21000	Fixed possibility to update host interface on items from templates Frontend
ZBX-21227	Fixed Zabbix agent to log received service control commands Agent
ZBX-21456	Fixed net.tcp.socket.count and net.udp.socket.count problem on Zabbix agent 2 when ipv6 is disabled Agent
ZBX-21532	Fixed missing inherited tags for templated triggers in edit form, tag tab Frontend
ZBX-21655	Fixed VMware datastore discovery to not return the same datastore multiple times Proxy Server
ZBX-21677	Fixed checkbox resetting in Monitoring->Latest data and Monitoring->Problems Frontend
ZBX-21687	Fixed persistent preloader icons over dashboard widgets on Safari 16 Frontend
ZBX-21689	Fixed proc.num to not crash the Zabbix agent on Windows when 'user' parameter is set Agent
ZBX-21463	Fixed Zabbix server to not attach interface to script items during linking Server
ZBX-17300	Fixed handling of context menu in the Map builder Frontend
ZBX-21656	Fixed clone buttons on template editing form that were not working in Safari 16 Frontend
ZBX-20505	Fixed subfilter counters displaying incorrect values in Monitoring => Graph view Frontend
ZBX-21733	Improved performance of system information and queue calculation to reduce history syncer locking Server
ZBX-21452	Fixed wmi.get* crash of zabbix_agentd for Windows Agent
ZBX-21673	Fixed read operations per second during preprocessing in Ceph by Zabbix agent 2 template Šablony
ZBX-21724	Fixed updating of lastaccess for proxies in availman if active proxy is used Proxy Server
ZBX-21582	Optimized HPE Synergy template to spread load across preprocessing workers Šablony
ZBX-21708	Fixed PHP TypeError when opening non-existing dashboard Frontend
ZBX-21606	Fixed "Allowed hosts" field in HTTP agent item Frontend
ZBX-19224	Added ability to unset headers in web scenario API
ZBX-21709	Fixed database upgrade patch to skip unexpected invalid service downtime instead of failing Server
ZBX-21562	Fixed maps not working with elements that contain disabled triggers Frontend
ZBX-21637	Fixed Zabbix server to rerun auto registration attempt in 120 seconds if host is deleted Agent
ZBX-21537	Fixed history syncers being stuck while waiting on system information being collected Server
ZBX-21025	Fixed the allowed argument range limits for char() trigger function Server
ZBX-21484	Updated documentation for SMART templates by Zabbix agent 2 Šablony
ZBX-21725	Fixed configuration cache shared memory leak when removing vault macros Proxy Server
ZBX-21510	Made NodeAddress use ListenIP and ListenPort if not explicitly specified Server
ZBX-21706	Fixed double precision update patch for TimescaleDb Server
ZBX-19512	Fixed debug info block content refresh after changing table content in Monitoring -> Problems page Frontend
ZBX-21682	Removed unnecessary horizontal separator from Host interface Frontend
ZBX-21610	Fixed problem with sysctl() kern.proc.args API bug on FreeBSD <= 8.2 Agent
ZBX-21672	Fixed event source in mediatypes Šablony
ZBX-21693	Fixed repeated lines in templates Šablony
ZBX-17060	Fixed unexpected interface connection mode change during autoregistration Server
ZBX-21388	Fixed Zabbix agent 2 plugin read error and updated plugin support dependency for Zabbix agent 2 Agent
ZBX-20864	Fixed format specifier definitions on AIX Agent Proxy Server
ZBX-21605	Fixed possible PHP runtime errors in several modal popup dialogs Frontend
ZBX-21097	Fixed filtering by "Resource ID" and "Recordset ID" fields for "Audit log" page API Frontend
ZBX-21580	Optimized HPE MSA 2060 Storage by HTTP template to spread the load across preprocessing workers Šablony
ZBXNEXT-5535	Implemented preselected host pattern filter for autosuggest used in items pattern field in graph widget Frontend
ZBX-21579	Optimized HPE MSA 2040 Storage by HTTP template to spread the load across preprocessing workers Šablony
ZBX-21421	Fixed variable spelling in Kubernetes cluster state by HTTP template Šablony
ZBX-21544	Fixed value of query field being truncated to the first "=" sign when pressing parse button Frontend
ZBX-21581	Optimized HPE Primera template to spread the load across preprocessing workers Šablony
ZBX-21456	Fixed net.tcp.socket.count problem on Zabbix agent 2 when ipv6 is disabled Agent
ZBX-21009	Fixed double escaping in trigger function upon host autoregistration Server
ZBX-21664	Fixed Zabbix server crashing during database upgrade when converting service times and there is downtime inside uptime Server
ZBX-21466	Fixed race condition in Zabbix agent 2 leading to permanently stuck mount reads Agent

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Poznámky k instalaci a upgradu

Instalace

Prohlédněte si Zabbixu manuál abyste získali informace o všech detailech.

Upgrade

Prohlédněte si Postup upgradu for upgrade options and instructions. For version specific upgrade notes, see Upgrade notes for 6.4.0.

Obchodní podpora

Společnost Zabbix poskytuje celou řadu profesionálních služeb. Poskytuje také služby ohledně Upgrade služby pro snadnou migraci z dřívějších verzí Zabbixu. Prosím obraťte se na náš obchodní tým ohledně ceny a dalších podrobností.

• Zabbix Enterprise podpora
• Zabbix Školení
• Zabbix Vývojové služby

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Reference

Zabbix 6.4 Manual