/etc/zabbix/zabbix agentd.conf

/etc/zabbix/zabbix agentd.conf Zabbix agent configuration file for host (monitored machines)

• Installation: apt install zabbix-agent

Configuration

Configure Zabbix Server IP in zabbix agentd.conf file, in this example (192.168.0.18):

sed -i s/ServerActive=127.0.0.1/ServerActive=192.168.0.18/ /etc/zabbix/zabbix_agentd.conf
sed -i s/Server=127.0.0.1/Server=192.168.0.18/ /etc/zabbix/zabbix_agentd.conf

Change Hostname value to your client hostname on zabbix_agentd.conf
systemctl restart zabbix-agent && systemctl status zabbix-agent 

Make also sure your firewall is properly configured.

Ubuntu 18.04 LTS default zabbix_agentd.conf configuration file from zabbix-agent package.

cat /etc/zabbix/zabbix_agentd.conf | grep -v "#" | grep .
PidFile=/var/run/zabbix/zabbix_agentd.pid
LogFile=/var/log/zabbix-agent/zabbix_agentd.log
LogFileSize=0
Server=127.0.0.1
ServerActive=127.0.0.1
Hostname=Zabbix server
Include=/etc/zabbix/zabbix_agentd.conf.d/*.conf

Ubuntu 20.04 LTS default zabbix_agentd.conf configuration file from zabbix-agent package.

grep -v "#" /etc/zabbix/zabbix_agentd.conf  | grep .
PidFile=/run/zabbix/zabbix_agentd.pid
LogFile=/var/log/zabbix-agent/zabbix_agentd.log
LogFileSize=0
Server=127.0.0.1
ServerActive=127.0.0.1
Include=/etc/zabbix/zabbix_agentd.conf.d/*.conf

cat /etc/zabbix/zabbix_agentd.conf
# This is a configuration file for Zabbix agent daemon (Unix)
# To get more information about Zabbix, visit http://www.zabbix.com

############ GENERAL PARAMETERS #################

### Option: PidFile
#	Name of PID file.
#
# Mandatory: no
# Default:
# PidFile=/tmp/zabbix_agentd.pid

PidFile=/run/zabbix/zabbix_agentd.pid

### Option: LogType
#	Specifies where log messages are written to:
#		system  - syslog
#		file    - file specified with LogFile parameter
#		console - standard output
#
# Mandatory: no
# Default:
# LogType=file

### Option: LogFile
#	Log file name for LogType 'file' parameter.
#
# Mandatory: yes, if LogType is set to file, otherwise no
# Default:
# LogFile=

LogFile=/var/log/zabbix-agent/zabbix_agentd.log

### Option: LogFileSize
#	Maximum size of log file in MB.
#	0 - disable automatic log rotation.
#
# Mandatory: no
# Range: 0-1024
# Default:
# LogFileSize=1

LogFileSize=0

### Option: DebugLevel
#	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)
#
# Mandatory: no
# Range: 0-5
# Default:
# DebugLevel=3

### Option: SourceIP
#	Source IP address for outgoing connections.
#
# Mandatory: no
# Default:
# SourceIP=

### Option: EnableRemoteCommands
#	Whether remote commands from Zabbix server are allowed.
#	0 - not allowed
#	1 - allowed
#
# Mandatory: no
# Default:
# EnableRemoteCommands=0

### Option: LogRemoteCommands
#	Enable logging of executed shell commands as warnings.
#	0 - disabled
#	1 - enabled
#
# Mandatory: no
# Default:
# LogRemoteCommands=0

##### Passive checks related

### Option: Server
#	List of comma delimited IP addresses, optionally in CIDR notation, or DNS names of Zabbix servers and Zabbix proxies.
#	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.
#	Example: Server=127.0.0.1,192.168.1.0/24,::1,2001:db8::/32,zabbix.example.com
#
# Mandatory: yes, if StartAgents is not explicitly set to 0
# Default:
# Server=

Server=127.0.0.1

### Option: ListenPort
#	Agent will listen on this port for connections from the server.
#
# Mandatory: no
# Range: 1024-32767
# Default:
# ListenPort=10050

### Option: ListenIP
#	List of comma delimited IP addresses that the agent should listen on.
#	First IP address is sent to Zabbix server if connecting to it to retrieve list of active checks.
#
# Mandatory: no
# Default:
# ListenIP=0.0.0.0

### Option: StartAgents
#	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.
#
# Mandatory: no
# Range: 0-100
# Default:
# StartAgents=3

##### Active checks related

### Option: ServerActive
#	List of comma delimited IP:port (or DNS name:port) pairs of Zabbix servers and Zabbix proxies for active checks.
#	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: ServerActive=127.0.0.1:20051,zabbix.domain,[::1]:30051,::1,[12fc::1]
#
# Mandatory: no
# Default:
# ServerActive=

ServerActive=127.0.0.1

### Option: Hostname
#	Unique, case sensitive hostname.
#	Required for active checks and must match hostname as configured on the server.
#	Value is acquired from HostnameItem if undefined.
#
# Mandatory: no
# Default:
# Hostname=


### Option: HostnameItem
#	Item used for generating Hostname if it is undefined. Ignored if Hostname is defined.
#	Does not support UserParameters or aliases.
#
# Mandatory: no
# Default:
# HostnameItem=system.hostname

### Option: HostMetadata
#	Optional parameter that defines host metadata.
#	Host metadata is used at host auto-registration process.
#	An agent will issue an error and not start if the value is over limit of 255 characters.
#	If not defined, value will be acquired from HostMetadataItem.
#
# Mandatory: no
# Range: 0-255 characters
# Default:
# HostMetadata=

### Option: HostMetadataItem
#	Optional parameter that defines an item used for getting host metadata.
#	Host metadata is used at host auto-registration process.
#	During an auto-registration 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 HostMetadata is not defined.
#
# Mandatory: no
# Default:
# HostMetadataItem=

### Option: RefreshActiveChecks
#	How often list of active checks is refreshed, in seconds.
#
# Mandatory: no
# Range: 60-3600
# Default:
# RefreshActiveChecks=120

### Option: BufferSend
#	Do not keep data longer than N seconds in buffer.
#
# Mandatory: no
# Range: 1-3600
# Default:
# BufferSend=5

### Option: BufferSize
#	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.
#
# Mandatory: no
# Range: 2-65535
# Default:
# BufferSize=100

### Option: MaxLinesPerSecond
#	Maximum number of new lines the agent will send per second to Zabbix Server
#	or Proxy processing 'log' and 'logrt' active checks.
#	The provided value will be overridden by the parameter 'maxlines',
#	provided in 'log' or 'logrt' item keys.
#
# Mandatory: no
# Range: 1-1000
# Default:
# MaxLinesPerSecond=20

############ ADVANCED PARAMETERS #################

### Option: Alias
#	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 not allowed.
#	Different Alias keys may reference the same item key.
#	For example, to retrieve the ID of user 'zabbix':
#	Alias=zabbix.userid:vfs.file.regexp[/etc/passwd,^zabbix:.:([0-9]+),,,,\1]
#	Now shorthand key zabbix.userid may be used to retrieve data.
#	Aliases can be used in HostMetadataItem but not in HostnameItem parameters.
#
# Mandatory: no
# Range:
# Default:

### Option: Timeout
#	Spend no more than Timeout seconds on processing
#
# Mandatory: no
# Range: 1-30
# Default:
# Timeout=3

### Option: AllowRoot
#	Allow the agent to run as 'root'. If disabled and the agent is started by 'root', the agent
#	will try to switch to the user specified by the User configuration option instead.
#	Has no effect if started under a regular user.
#	0 - do not allow
#	1 - allow
#
# Mandatory: no
# Default:
# AllowRoot=0

### Option: User
#	Drop privileges to a specific, existing user on the system.
#	Only has effect if run as 'root' and AllowRoot is disabled.
#
# Mandatory: no
# Default:
# User=zabbix

### Option: Include
#	You may include individual files or all files in a directory in the configuration file.
#	Installing Zabbix will create include directory in /etc/zabbix, unless modified during the compile time.
#
# Mandatory: no
# Default:
# Include=

# Include=/etc/zabbix/zabbix_agentd.userparams.conf
# Include=/etc/zabbix/zabbix_agentd.conf.d/
Include=/etc/zabbix/zabbix_agentd.conf.d/*.conf

####### USER-DEFINED MONITORED PARAMETERS #######

### Option: UnsafeUserParameters
#	Allow all characters to be passed in arguments to user-defined parameters.
#	The following characters are not allowed:
#	\ ' " ` * ? [ ] { } ~ $ ! & ; ( ) < > | # @
#	Additionally, newline characters are not allowed.
#	0 - do not allow
#	1 - allow
#
# Mandatory: no
# Range: 0-1
# Default:
# UnsafeUserParameters=0

### Option: UserParameter
#	User-defined parameter to monitor. There can be several user-defined parameters.
#	Format: UserParameter=<key>,<shell command>
#	See 'zabbix_agentd' directory for examples.
#
# Mandatory: no
# Default:
# UserParameter=

####### LOADABLE MODULES #######

### Option: LoadModulePath
#	Full path to location of agent modules.
#	Default depends on compilation options.
#	To see the default path run command "zabbix_agentd --help".
#
# Mandatory: no
# Default:
# LoadModulePath=${libdir}/modules

### Option: LoadModule
#	Module to load at agent startup. Modules are used to extend functionality of the agent.
#	Formats:
#		LoadModule=<module.so>
#		LoadModule=<path/module.so>
#		LoadModule=</abs_path/module.so>
#	Either the module must be located in directory specified by LoadModulePath or the path must precede the module name.
#	If the preceding path is absolute (starts with '/') then LoadModulePath is ignored.
#	It is allowed to include multiple LoadModule parameters.
#
# Mandatory: no
# Default:
# LoadModule=

####### TLS-RELATED PARAMETERS #######

### Option: TLSConnect
#	How the agent should connect to server or proxy. Used for active checks.
#	Only one value can be specified:
#		unencrypted - connect without encryption
#		psk         - connect using TLS and a pre-shared key
#		cert        - connect using TLS and a certificate
#
# Mandatory: yes, if TLS certificate or PSK parameters are defined (even for 'unencrypted' connection)
# Default:
# TLSConnect=unencrypted

### Option: TLSAccept
#	What incoming connections to accept.
#	Multiple values can be specified, separated by comma:
#		unencrypted - accept connections without encryption
#		psk         - accept connections secured with TLS and a pre-shared key
#		cert        - accept connections secured with TLS and a certificate
#
# Mandatory: yes, if TLS certificate or PSK parameters are defined (even for 'unencrypted' connection)
# Default:
# TLSAccept=unencrypted

### Option: TLSCAFile
#	Full pathname of a file containing the top-level CA(s) certificates for
#	peer certificate verification.
#
# Mandatory: no
# Default:
# TLSCAFile=

### Option: TLSCRLFile
#	Full pathname of a file containing revoked certificates.
#
# Mandatory: no
# Default:
# TLSCRLFile=

### Option: TLSServerCertIssuer
#      Allowed server certificate issuer.
#
# Mandatory: no
# Default:
# TLSServerCertIssuer=

### Option: TLSServerCertSubject
#      Allowed server certificate subject.
#
# Mandatory: no
# Default:
# TLSServerCertSubject=

### Option: TLSCertFile
#	Full pathname of a file containing the agent certificate or certificate chain.
#
# Mandatory: no
# Default:
# TLSCertFile=

### Option: TLSKeyFile
#	Full pathname of a file containing the agent private key.
#
# Mandatory: no
# Default:
# TLSKeyFile=

### Option: TLSPSKIdentity
#	Unique, case sensitive string used to identify the pre-shared key.
#
# Mandatory: no
# Default:
# TLSPSKIdentity=

### Option: TLSPSKFile
#	Full pathname of a file containing the pre-shared key.
#
# Mandatory: no
# Default:
# TLSPSKFile=

Related terms

• /etc/zabbix/zabbix_server.conf

See also

• Zabbix, Zabbix releases, Install Zabbix using Docker, Zabbix agent (zabbix_agentd.conf), Zabbix API, zabbix_server, zabbix_get, zabbix_sender, /etc/zabbix/zabbix_server.conf