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5 Zabbix agent (Windows)
Overview
This section lists parameters supported in a Zabbix agent (Windows) configuration file (zabbix_agent.conf). Note that:
- The default values reflect daemon defaults, not the values in the shipped configuration files;
- Zabbix supports configuration files only in UTF-8 encoding without BOM;
- Comments starting with "#" are only supported in the beginning of the line.
Parameters
| Parameter | Mandatory | Range | Default | Description |
|---|---|---|---|---|
| Alias | no | Sets an alias for an item key. It can be used to substitute long and complex item key with a smaller and simpler one. Multiple Alias parameters may be present. Multiple parameters with the same Alias key are allowed. Different Alias keys may reference the same item key. Aliases can be used in HostMetadataItem but not in HostnameItem or PerfCounter parameters. Examples: 1. Retrieving paging file usage in percents from the server. Alias=pg_usage:perf_counter[\Paging File(_Total)\% Usage] Now shorthand key pg_usage may be used to retrieve data. 2. Getting CPU load with default and custom parameters. Alias=cpu.load:system.cpu.load Alias=cpu.load[*]:system.cpu.load[*] This allows use cpu.load key to get CPU utilization percentage with default parameters as well as use cpu.load[percpu,avg15] to get specific data about CPU load. 3. Running multiple low-level discovery rules processing the same discovery items. Alias=vfs.fs.discovery[*]:vfs.fs.discovery Now it is possible to set up several discovery rules using vfs.fs.discovery with different parameters for each rule, e.g., vfs.fs.discovery[foo], vfs.fs.discovery[bar], etc. |
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| AllowKey | no | Allow execution of those item keys that match a pattern. Key pattern is a wildcard expression that supports "*" character to match any number of any characters. Multiple key matching rules may be defined in combination with DenyKey. The parameters are processed one by one according to their appearance order. This parameter is supported since Zabbix 5.0.0. See also: Restricting agent checks. |
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| BufferSend | no | 1-3600 | 5 | Do not keep data longer than N seconds in buffer. |
| BufferSize | no | 2-65535 | 100 | Maximum number of values in a memory buffer. The agent will send all collected data to Zabbix server or proxy if the buffer is full. |
| 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) |
| DenyKey | no | Deny execution of those item keys that match a pattern. Key pattern is a wildcard expression that supports "*" character to match any number of any characters. Multiple key matching rules may be defined in combination with AllowKey. The parameters are processed one by one according to their appearance order. This parameter is supported since Zabbix 5.0.0. See also: Restricting agent checks. |
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| EnableRemoteCommands | no | 0 | Whether remote commands from Zabbix server are allowed. This parameter is deprecated, use AllowKey=system.run[*] or DenyKey=system.run[*] instead It is internal alias for AllowKey/DenyKey parameters depending on value: 0 - DenyKey=system.run[*] 1 - AllowKey=system.run[*]. |
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| HostInterface | no | 0-255 characters | Optional parameter that defines host interface. Host interface is used at host autoregistration process. An agent will issue an error and not start if the value is over the limit of 255 characters. If not defined, value will be acquired from HostInterfaceItem. Supported since Zabbix 4.4.0. |
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| HostInterfaceItem | no | Optional parameter that defines an item used for getting host interface. Host interface is used at host autoregistration process. During an autoregistration request an agent will log a warning message if the value returned by specified item is over limit of 255 characters. This option is only used when HostInterface is not defined. Supported since Zabbix 4.4.0. |
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| HostMetadata | no | 0-255 characters | Optional parameter that defines host metadata. Host metadata is used only at host autoregistration process (active agent). If not defined, the value will be acquired from HostMetadataItem. An agent will issue an error and not start if the specified value is over the limit or a non-UTF-8 string. |
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| HostMetadataItem | no | Optional parameter that defines a Zabbix agent item used for getting host metadata. This option is only used when HostMetadata is not defined. Supports UserParameters, performance counters and aliases. Supports system.run[] regardless of EnableRemoteCommands value. HostMetadataItem value is retrieved on each autoregistration attempt and is used only at host autoregistration process (active agent). During an autoregistration request an agent will log a warning message if the value returned by the specified item is over the limit of 255 characters. The value returned by the item must be a UTF-8 string otherwise it will be ignored. |
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| Hostname | no | Set by HostnameItem | List of comma-delimited unique, case-sensitive hostnames. Required for active checks and must match hostnames as configured on the server. Value is acquired from HostnameItem if undefined. Allowed characters: alphanumeric, '.', ' ', '_' and '-'. Maximum length: 128 characters per hostname, 2048 characters for the entire line. |
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| HostnameItem | no | system.hostname | Optional parameter that defines a Zabbix agent item used for getting host name. This option is only used when Hostname is not defined. Does not support UserParameters, performance counters or aliases, but does support system.run[] regardless of EnableRemoteCommands value. The output length is limited to 512KB. See also a more detailed description. |
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| 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.See special notes about limitations. |
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| ListenBacklog | no | 0 - INT_MAX | SOMAXCONN | The maximum number of pending connections in the TCP queue. Default value is a hard-coded constant, which depends on the system. Maximum supported value depends on the system, too high values may be silently truncated to the 'implementation-specified maximum'. |
| ListenIP | no | 0.0.0.0 | List of comma-delimited IP addresses that the agent should listen on. | |
| ListenPort | no | 1024-32767 | 10050 | Agent will listen on this port for connections from the server. |
| LogFile | yes, if LogType is set to file, otherwise no |
C:\zabbix_agentd.log | Name of the agent 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 Windows Event Log, console - write log to standard output. This parameter is supported since Zabbix 3.0.0. |
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| LogRemoteCommands | no | 0 | Enable logging of executed shell commands as warnings. 0 - disabled 1 - enabled |
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| MaxLinesPerSecond | no | 1-1000 | 20 | Maximum number of new lines the agent will send per second to Zabbix server or proxy processing 'log', 'logrt' and 'eventlog' active checks. The provided value will be overridden by the parameter 'maxlines', provided in 'log', 'logrt' or 'eventlog' item keys. Note: Zabbix will process 10 times more new lines than set in MaxLinesPerSecond to seek the required string in log items. |
| PerfCounter | no | Defines a new parameter <parameter_name> which is an average value for system performance counter <perf_counter_path> for the specified time period <period> (in seconds). Syntax: <parameter_name>,"<perf_counter_path>",<period> For example, if you wish to receive average number of processor interrupts per second for last minute, you can define a new parameter "interrupts" as the following: PerfCounter = interrupts,"\Processor(0)\Interrupts/sec",60 Please note double quotes around performance counter path. The parameter name (interrupts) is to be used as the item key when creating an item. Samples for calculating average value will be taken every second. You may run "typeperf -qx" to get list of all performance counters available in Windows. |
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| PerfCounterEn | no | Defines a new parameter <parameter_name> which is an average value for system performance counter <perf_counter_path> for the specified time period <period> (in seconds). Syntax: <parameter_name>,"<perf_counter_path>",<period> Compared to PerfCounter, perfcounter paths must be in English. Supported only on Windows Server 2008/Vista and above. For example, if you wish to receive average number of processor interrupts per second for last minute, you can define a new parameter "interrupts" as the following: PerfCounterEn = interrupts,"\Processor(0)\Interrupts/sec",60 Please note double quotes around performance counter path. The parameter name (interrupts) is to be used as the item key when creating an item. Samples for calculating average value will be taken every second. You can find the list of English strings by viewing the following registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Perflib\009.This parameter is supported since Zabbix 4.0.13 and 4.2.7. |
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| RefreshActiveChecks | no | 60-3600 | 120 | How often list of active checks is refreshed, in seconds. Note that after failing to refresh active checks the next refresh will be attempted after 60 seconds. |
| Server | yes, if StartAgents is not explicitly set to 0 | List of comma delimited IP addresses, optionally in CIDR notation, or hostnames of Zabbix servers. Incoming connections will be accepted only from the hosts listed here. If IPv6 support is enabled then '127.0.0.1', '::127.0.0.1', '::ffff:127.0.0.1' are treated equally and '::/0' will allow any IPv4 or IPv6 address. '0.0.0.0/0' can be used to allow any IPv4 address. Note, that "IPv4-compatible IPv6 addresses" (0000::/96 prefix) are supported but deprecated by RFC4291. Example: Server=127.0.0.1,192.168.1.0/24,::1,2001:db8::/32,zabbix.domain Spaces are allowed. |
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| ServerActive | no | (*) | List of comma-delimited IP address or DNS name (address:port) pairs or clusters (address:port;address2:port) of Zabbix servers and Zabbix proxies for active checks. Cluster nodes must be separated by a semicolon. Multiple comma-delimited addresses can be provided to use several independent Zabbix servers in parallel. Spaces are allowed. If port is not specified, default port is used. IPv6 addresses must be enclosed in square brackets if port for that host is specified. If port is not specified, square brackets for IPv6 addresses are optional. If this parameter is not specified, active checks are disabled. Example for multiple servers: ServerActive=127.0.0.1:20051,zabbix.domain,[::1]:30051,::1,[12fc::1] Example for high availability: ServerActive=zabbix.cluster.node1;zabbix.cluster.node2:20051;zabbix.cluster.node3 Example for high availability with two clusters and one server: ServerActive=zabbix.cluster.node1;zabbix.cluster.node2:20051,zabbix.cluster2.node1;zabbix.cluster2.node2,zabbix.domain |
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| SourceIP | no | Source IP address for: - outgoing connections to Zabbix server or Zabbix proxy; - making connections while executing some items (web.page.get, net.tcp.port, etc.) |
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| StartAgents | no | 0-63 (*) | 3 | Number of pre-forked instances of zabbix_agentd that process passive checks. If set to 0, disables passive checks and the agent will not listen on any TCP port. |
| Timeout | no | 1-30 | 3 | Spend no more than Timeout seconds on processing |
| TLSAccept | yes, if TLS certificate or PSK parameters are defined (even for unencrypted connection), otherwise no | What incoming connections to accept. Used for a passive checks. Multiple values can be specified, separated by comma: unencrypted - accept connections without encryption (default) psk - accept connections with TLS and a pre-shared key (PSK) cert - accept connections with TLS and a certificate This parameter is supported since Zabbix 3.0.0. |
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| 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. |
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| TLSCertFile | no | Full pathname of a file containing the agent certificate or certificate chain, used for encrypted communications with Zabbix components. This parameter is supported since Zabbix 3.0.0. |
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| TLSConnect | yes, if TLS certificate or PSK parameters are defined (even for unencrypted connection), otherwise no | How the agent should connect to Zabbix server or proxy. Used for active checks. Only one value can be specified: unencrypted - connect without encryption (default) psk - connect using TLS and a pre-shared key (PSK) cert - connect using TLS and a certificate This parameter is supported since Zabbix 3.0.0. |
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| TLSCRLFile | no | Full pathname of a file containing revoked certificates. This parameter is used for encrypted communications with Zabbix components. This parameter is supported since Zabbix 3.0.0. |
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| TLSKeyFile | no | Full pathname of a file containing the agent private key used for encrypted communications with Zabbix components. This parameter is supported since Zabbix 3.0.0. |
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| TLSPSKFile | no | Full pathname of a file containing the agent pre-shared key used for encrypted communications with Zabbix components. This parameter is supported since Zabbix 3.0.0. |
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| TLSPSKIdentity | no | Pre-shared key identity string, used for encrypted communications with Zabbix server. This parameter is supported since Zabbix 3.0.0. |
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| TLSServerCertIssuer | no | Allowed server (proxy) certificate issuer. This parameter is supported since Zabbix 3.0.0. |
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| TLSServerCertSubject | no | Allowed server (proxy) certificate subject. This parameter is supported since Zabbix 3.0.0. |
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| UnsafeUserParameters | no | 0-1 | 0 | Allow all characters to be passed in arguments to user-defined parameters. 0 - do not allow 1 - allow The following characters are not allowed: \ ' " ` * ? [ ] { } ~ $ ! & ; ( ) < > | # @ Additionally, newline characters are not allowed. |
| UserParameter | no | User-defined parameter to monitor. There can be several user-defined parameters. Format: UserParameter=<key>,<shell command> Note that shell command must not return empty string or EOL only. Shell commands may have relative paths, if UserParameterDir parameter is specified. Examples: UserParameter=system.test,who|wc -l UserParameter=check_cpu,./custom_script.sh |
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| UserParameterDir | no | Default search path for UserParameter commands. If used, the agent will change its working directory to the one specified here before executing a command. Thereby, UserParameter commands can have a relative ./ prefix instead of a full path.Only one entry is allowed. Example: UserParameterDir=/opt/myscripts |
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(*) The number of active servers listed in ServerActive plus the number of pre-forked instances for passive checks specified in StartAgents must be less than 64.