Zabbix Documentation 3.4

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manual:appendix:config:zabbix_server

1 Zabbix server

The default values reflect daemon defaults, not the values in the shipped configuration files.

The parameters supported in a Zabbix server configuration file:

ParameterMandatoryRangeDefaultDescription
AlertScriptsPath no /usr/local/share/zabbix/alertscripts Location of custom alert scripts (depends on compile-time installation variable datadir).
AllowRoot no 0 Allow the server to run as 'root'. If disabled and the server is started by 'root', the server will try to switch to the 'zabbix' user instead. Has no effect if started under a regular user.
0 - do not allow
1 - allow
This parameter is supported since Zabbix 2.2.0.
CacheSize no 128K-8G 8M Size of configuration cache, in bytes.
Shared memory size for storing host, item and trigger data.
Upper limit used to be 2GB before Zabbix 2.2.3.
CacheUpdateFrequency no 1-3600 60 How often Zabbix will perform update of configuration cache, in seconds.
See also runtime control options.
DBHost no localhost Database host name.
In case of MySQL localhost or empty string results in using a socket. In case of PostgreSQL
only empty string results in attempt to use socket.
DBName yes Database name.
DBPassword no Database password.
Comment this line if no password is used.
DBPort no 1024-65535 3306 Database port when not using local socket.
DBSchema no Schema name. Used for IBM DB2 and PostgreSQL.
DBSocket no /tmp/mysql.sock Path to MySQL socket.
DBUser no Database user.
DebugLevel no 0-5 3 Specifies debug level:
0 - basic information about starting and stopping of Zabbix processes
1 - critical information
2 - error information
3 - warnings
4 - for debugging (produces lots of information)
5 - extended debugging (produces even more information)
See also runtime control options.
ExternalScripts no /usr/local/share/zabbix/externalscripts Location of external scripts (depends on compile-time installation variable datadir).
Fping6Location no /usr/sbin/fping6 Location of fping6.
Make sure that fping6 binary has root ownership and SUID flag set.
Make empty (“Fping6Location=”) if your fping utility is capable to process IPv6 addresses.
FpingLocation no /usr/sbin/fping Location of fping.
Make sure that fping binary has root ownership and SUID flag set!
HistoryCacheSize no 128K-2G 16M Size of history cache, in bytes.
Shared memory size for storing history data.
HistoryIndexCacheSize no 128K-2G 4M Size of history index cache, in bytes.
Shared memory size for indexing history data stored in history cache.
The index cache size needs roughly 100 bytes to cache one item.
This parameter is supported since Zabbix 3.0.0.
HistoryStorageURL no History storage HTTP[S] URL.
This parameter is used for Elasticsearch setup.
HistoryStorageTypes no uint,dbl,str,log,text Comma separated list of value types to be sent to the history storage.
This parameter is used for Elasticsearch setup.
HousekeepingFrequency no 0-24 1 How often Zabbix will perform housekeeping procedure (in hours).
Housekeeping is removing outdated information from the database.
Note: To prevent housekeeper from being overloaded (for example, when history and trend periods are greatly reduced), no more than 4 times HousekeepingFrequency hours of outdated information are deleted in one housekeeping cycle, for each item. Thus, if HousekeepingFrequency is 1, no more than 4 hours of outdated information (starting from the oldest entry) will be deleted per cycle.
Note: To lower load on server startup housekeeping is postponed for 30 minutes after server start. Thus, if HousekeepingFrequency is 1, the very first housekeeping procedure after server start will run after 30 minutes, and will repeat with one hour delay thereafter. This postponing behavior is in place since Zabbix 2.4.0.
Since Zabbix 3.0.0 it is possible to disable automatic housekeeping by setting HousekeepingFrequency to 0. In this case the housekeeping procedure can only be started by housekeeper_execute runtime control option and the period of outdated information deleted in one housekeeping cycle is 4 times the period since the last housekeeping cycle, but not less than 4 hours and not greater than 4 days.
See also runtime control options.
Include no You may include individual files or all files in a directory in the configuration file.
To only include relevant files in the specified directory, the asterisk wildcard character is supported for pattern matching. For example: /absolute/path/to/config/files/*.conf. Pattern matching is supported since Zabbix 2.4.0.
See special notes about limitations.
JavaGateway no IP address (or hostname) of Zabbix Java gateway.
Only required if Java pollers are started.
This parameter is supported since Zabbix 2.0.0.
JavaGatewayPort no 1024-32767 10052 Port that Zabbix Java gateway listens on.
This parameter is supported since Zabbix 2.0.0.
ListenIP no 0.0.0.0 List of comma delimited IP addresses that the trapper should listen on.
Trapper will listen on all network interfaces if this parameter is missing.
Multiple IP addresses are supported since Zabbix 1.8.3.
ListenPort no 1024-32767 10051 Listen port for trapper.
LoadModule no Module to load at server startup. Modules are used to extend functionality of the server.
Format: LoadModule=<module.so>
The modules must be located in directory specified by LoadModulePath.
It is allowed to include multiple LoadModule parameters.
LoadModulePath no Full path to location of server modules.
Default depends on compilation options.
LogFile yes, if LogType is set to file, otherwise
no
Name of log file.
LogFileSize no 0-1024 1 Maximum size of log file in MB.
0 - disable automatic log rotation.
Note: If the log file size limit is reached and file rotation fails, for whatever reason, the existing log file is truncated and started anew.
LogType no file Log output type:
file - write log to file specified by LogFile parameter,
system - write log to syslog,
console - write log to standard output.
This parameter is supported since Zabbix 3.0.0.
LogSlowQueries no 0-3600000 0 How long a database query may take before being logged (in milliseconds).
0 - don't log slow queries.
This option becomes enabled starting with DebugLevel=3.
This parameter is supported since Zabbix 1.8.2.
MaxHousekeeperDelete no 0-1000000 5000 No more than 'MaxHousekeeperDelete' rows (corresponding to [tablename], [field], [value]) will be deleted per one task in one housekeeping cycle.
If set to 0 then no limit is used at all. In this case you must know what you are doing!
This parameter is supported since Zabbix 1.8.2 and applies only to deleting history and trends of already deleted items.
PidFile no /tmp/zabbix_server.pid Name of PID file.
ProxyConfigFrequency no 1-604800 3600 How often Zabbix server sends configuration data to a Zabbix proxy in seconds. Used only for proxies in a passive mode.
This parameter is supported since Zabbix 1.8.3.
ProxyDataFrequency no 1-3600 1 How often Zabbix server requests history data from a Zabbix proxy in seconds. Used only for proxies in a passive mode.
This parameter is supported since Zabbix 1.8.3.
SNMPTrapperFile no /tmp/zabbix_traps.tmp Temporary file used for passing data from SNMP trap daemon to the server.
Must be the same as in zabbix_trap_receiver.pl or SNMPTT configuration file.
This parameter is supported since Zabbix 2.0.0.
SocketDir no /tmp Directory to store IPC sockets used by internal Zabbix services.
This parameter is supported since Zabbix 3.4.0.
SourceIP no Source IP address for outgoing connections.
SSHKeyLocation no Location of public and private keys for SSH checks and actions
SSLCertLocation no Location of SSL client certificate files for client authentication.
This parameter is used in web monitoring only and is supported since Zabbix 2.4.
SSLKeyLocation no Location of SSL private key files for client authentication.
This parameter is used in web monitoring only and is supported since Zabbix 2.4.
SSLCALocation no Override the location of certificate authority (CA) files for SSL server certificate verification. If not set, system-wide directory will be used.
Note that the value of this parameter will be set as libcurl option CURLOPT_CAPATH. For libcurl versions before 7.42.0, this only has effect if libcurl was compiled to use OpenSSL. For more information see cURL web page.
This parameter is used in web monitoring since Zabbix 2.4.0 and in SMTP authentication since Zabbix 3.0.0.
StartDBSyncers no 1-100 4 Number of pre-forked instances of DB Syncers.
The upper limit used to be 64 before version 1.8.5.
This parameter is supported since Zabbix 1.8.3.
StartAlerters no 1-100 3 Number of pre-forked instances of alerters.
This parameter is supported since Zabbix 3.4.0.
StartDiscoverers no 0-250 1 Number of pre-forked instances of discoverers.
The upper limit used to be 255 before version 1.8.5.
StartEscalators no 1-100 1 Number of pre-forked instances of escalators.
This parameter is supported since Zabbix 3.0.0.
StartHTTPPollers no 0-1000 1 Number of pre-forked instances of HTTP pollers1.
The upper limit used to be 255 before version 1.8.5.
StartIPMIPollers no 0-1000 0 Number of pre-forked instances of IPMI pollers.
The upper limit used to be 255 before version 1.8.5.
StartJavaPollers no 0-1000 0 Number of pre-forked instances of Java pollers1.
This parameter is supported since Zabbix 2.0.0.
StartPingers no 0-1000 1 Number of pre-forked instances of ICMP pingers1.
The upper limit used to be 255 before version 1.8.5.
StartPollersUnreachable no 0-1000 1 Number of pre-forked instances of pollers for unreachable hosts (including IPMI and Java)1.
Since Zabbix 2.4.0, at least one poller for unreachable hosts must be running if regular, IPMI or Java pollers are started.
The upper limit used to be 255 before version 1.8.5.
This option is missing in version 1.8.3.
StartPollers no 0-1000 5 Number of pre-forked instances of pollers1.
The upper limit used to be 255 before version 1.8.5.
StartPreprocessors no 1-1000 3 Number of pre-forked instances of preprocessing workers1.
The preprocessing manager process is automatically started when a preprocessor worker is started.
This parameter is supported since Zabbix 3.4.0.
StartProxyPollers no 0-250 1 Number of pre-forked instances of pollers for passive proxies1.
The upper limit used to be 255 before version 1.8.5.
This parameter is supported since Zabbix 1.8.3.
StartSNMPTrapper no 0-1 0 If set to 1, SNMP trapper process will be started.
This parameter is supported since Zabbix 2.0.0.
StartTimers no 1-1000 1 Number of pre-forked instances of timers.
Timers process time-based trigger functions and maintenance periods.
Only the first timer process handles the maintenance periods.
This parameter is supported since Zabbix 2.2.0.
StartTrappers no 0-1000 5 Number of pre-forked instances of trappers1.
Trappers accept incoming connections from Zabbix sender, active agents and active proxies.
At least one trapper process must be running to display server availability and view queue in the frontend.
The upper limit used to be 255 before version 1.8.5.
StartVMwareCollectors no 0-250 0 Number of pre-forked vmware collector instances.
This parameter is supported since Zabbix 2.2.0.
Timeout no 1-30 3 Specifies how long we wait for agent, SNMP device or external check (in seconds).
TLSCAFile no Full pathname of a file containing the top-level CA(s) certificates for peer certificate verification, used for encrypted communications between Zabbix components.
This parameter is supported since Zabbix 3.0.0.
TLSCertFile no Full pathname of a file containing the server certificate or certificate chain, used for encrypted communications between Zabbix components.
This parameter is supported since Zabbix 3.0.0.
TLSCRLFile no Full pathname of a file containing revoked certificates. This parameter is used for encrypted communications between Zabbix components.
This parameter is supported since Zabbix 3.0.0.
TLSKeyFile no Full pathname of a file containing the server private key, used for encrypted communications between Zabbix components.
This parameter is supported since Zabbix 3.0.0.
TmpDir no /tmp Temporary directory.
TrapperTimeout no 1-300 300 Specifies how many seconds trapper may spend processing new data.
TrendCacheSize no 128K-2G 4M Size of trend cache, in bytes.
Shared memory size for storing trends data.
UnavailableDelay no 1-3600 60 How often host is checked for availability during the unavailability period, in seconds.
UnreachableDelay no 1-3600 15 How often host is checked for availability during the unreachability period, in seconds.
UnreachablePeriod no 1-3600 45 After how many seconds of unreachability treat a host as unavailable.
User no zabbix Drop privileges to a specific, existing user on the system.
Only has effect if run as 'root' and AllowRoot is disabled.
This parameter is supported since Zabbix 2.4.0.
ValueCacheSize no 0,128K-64G 8M Size of history value cache, in bytes.
Shared memory size for caching item history data requests.
Setting to 0 disables value cache (not recommended).
When value cache runs out of the shared memory a warning message is written to the server log every 5 minutes.
This parameter is supported since Zabbix 2.2.0.
VMwareCacheSize no 256K-2G 8M Shared memory size for storing VMware data.
A VMware internal check zabbix[vmware,buffer,…] can be used to monitor the VMware cache usage (see Internal checks).
Note that shared memory is not allocated if there are no vmware collector instances configured to start.
This parameter is supported since Zabbix 2.2.0.
VMwareFrequency no 10-86400 60 Delay in seconds between data gathering from a single VMware service.
This delay should be set to the least update interval of any VMware monitoring item.
This parameter is supported since Zabbix 2.2.0.
VMwarePerfFrequency no 10-86400 60 Delay in seconds between performance counter statistics retrieval from a single VMware service.
This delay should be set to the least update interval of any VMware monitoring item that uses VMware performance counters.
This parameter is supported since Zabbix 2.2.9, 2.4.4
VMwareTimeout no 1-300 10 The maximum number of seconds vmware collector will wait for a response from VMware service (vCenter or ESX hypervisor).
This parameter is supported since Zabbix 2.2.9, 2.4.4
Footnotes

(1) Note that too many data gathering processes (pollers, unreachable pollers, HTTP pollers, Java pollers, pingers, trappers, proxypollers) together with IPMI manager, SNMP trapper and preprocessing workers can exhaust the per-process file descriptor limit for the preprocessing manager. This will cause Zabbix server to stop (usually shortly after the start, but sometimes it can take more time). The configuration file should be revised or the limit should be raised to avoid this situation.

Zabbix supports configuration files only in UTF-8 encoding without BOM.

Comments starting with “#” are only supported in the beginning of the line.