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Object Types

This chapter provides an overview of all available object types which can be instantiated using the object keyword.

Additional details on configuration and runtime attributes and their description are explained as well.

ApiListener

ApiListener objects are used for distributed monitoring setups and API usage specifying the certificate files used for ssl authorization and additional restrictions.

The NodeName constant must be defined in constants.conf.

Example:

object ApiListener "api" {
  cert_path = SysconfDir + "/icinga2/pki/" + NodeName + ".crt"
  key_path = SysconfDir + "/icinga2/pki/" + NodeName + ".key"
  ca_path = SysconfDir + "/icinga2/pki/ca.crt"
}

Configuration Attributes:

Name	Description
cert_path	Required. Path to the public key.
key_path	Required. Path to the private key.
ca_path	Required. Path to the CA certificate file.
crl_path	Optional. Path to the CRL file.
bind_host	Optional. The IP address the api listener should be bound to. Defaults to `0.0.0.0`.
bind_port	Optional. The port the api listener should be bound to. Defaults to `5665`.
accept_config	Optional. Accept zone configuration. Defaults to `false`.
accept_commands	Optional. Accept remote commands. Defaults to `false`.

ApiUser

ApiUser objects are used for authentication against the Icinga 2 API.

Example:

object ApiUser "root" {
  password = "mysecretapipassword"
}

Configuration Attributes:

Name	Description
password	Optional. Password string.
client_cn	Optional. Client Common Name (CN).

CheckCommand

A check command definition. Additional default command custom attributes can be defined here.

Example:

object CheckCommand "check_http" {
  import "plugin-check-command"

  command = [ PluginDir + "/check_http" ]

  arguments = {
    "-H" = "$http_vhost$"
    "-I" = "$http_address$"
    "-u" = "$http_uri$"
    "-p" = "$http_port$"
    "-S" = {
      set_if = "$http_ssl$"
    }
    "--sni" = {
      set_if = "$http_sni$"
    }
    "-a" = {
      value = "$http_auth_pair$"
      description = "Username:password on sites with basic authentication"
    }
    "--no-body" = {
      set_if = "$http_ignore_body$"
    }
    "-r" = "$http_expect_body_regex$"
    "-w" = "$http_warn_time$"
    "-c" = "$http_critical_time$"
    "-e" = "$http_expect$"
  }

  vars.http_address = "$address$"
  vars.http_ssl = false
  vars.http_sni = false
}

Configuration Attributes:

Name	Description
execute	Required. The "execute" script method takes care of executing the check. In virtually all cases you should import the "plugin-check-command" template to take care of this setting.
command	Required. The command. This can either be an array of individual command arguments. Alternatively a string can be specified in which case the shell interpreter (usually /bin/sh) takes care of parsing the command. When using the "arguments" attribute this must be an array. Can be specified as function for advanced implementations.
env	Optional. A dictionary of macros which should be exported as environment variables prior to executing the command.
vars	Optional. A dictionary containing custom attributes that are specific to this command.
timeout	Optional. The command timeout in seconds. Defaults to 60 seconds.
arguments	Optional. A dictionary of command arguments.

CheckCommand Arguments

Command arguments can be defined as key-value-pairs in the arguments dictionary. If the argument requires additional configuration for example a description attribute or an optional condition, the value can be defined as dictionary specifying additional options.

Service:

vars.x_val = "My command argument value."
vars.have_x = "true"

CheckCommand:

arguments = {
  "-X" = {
    value = "$x_val$"
    key = "-Xnew"	    /* optional, set a new key identifier */
    description = "My plugin requires this argument for doing X."
    required = false    /* optional, no error if not set */
    skip_key = false    /* always use "-X <value>" */
    set_if = "$have_x$" /* only set if variable defined and resolves to a numeric value. String values are not supported */
    order = -1          /* first position */
    repeat_key = true   /* if `value` is an array, repeat the key as parameter: ... 'key' 'value[0]' 'key' 'value[1]' 'key' 'value[2]' ... */
  }
  "-Y" = {
    value = "$y_val$"
    description = "My plugin requires this argument for doing Y."
    required = false    /* optional, no error if not set */
    skip_key = true     /* don't prefix "-Y" only use "<value>" */
    set_if = "$have_y$" /* only set if variable defined and resolves to a numeric value. String values are not supported */
    order = 0           /* second position */
    repeat_key = false  /* if `value` is an array, do not repeat the key as parameter: ... 'key' 'value[0]' 'value[1]' 'value[2]' ... */
  }
}

Option	Description
value	Optional argument value set by a macro string or a function call.
key	Optional argument key overriding the key identifier.
description	Optional argument description.
required	Required argument. Execution error if not set. Defaults to false (optional).
skip_key	Use the value as argument and skip the key.
set_if	Argument is added if the macro resolves to a defined numeric or boolean value. String values are not supported. Function calls returning a value are supported too.
order	Set if multiple arguments require a defined argument order.
repeat_key	If the argument value is an array, repeat the argument key, or not. Defaults to true (repeat).

Argument order:

`..., -3, -2, -1, <un-ordered keys>, 1, 2, 3, ...`

Argument array repeat_key = true:

`'key' 'value[0]' 'key' 'value[1]' 'key' 'value[2]'`

Argument array repeat_key = false:

`'key' 'value[0]' 'value[1]' 'value[2]'`

CheckerComponent

The checker component is responsible for scheduling active checks. There are no configurable options.

Example:

library "checker"

object CheckerComponent "checker" { }

CheckResultReader

Reads Icinga 1.x check results from a directory. This functionality is provided to help existing Icinga 1.x users and might be useful for certain cluster scenarios.

Example:

library "compat"

object CheckResultReader "reader" {
  spool_dir = "/data/check-results"
}

Configuration Attributes:

Name	Description
spool_dir	Optional. The directory which contains the check result files. Defaults to LocalStateDir + "/lib/icinga2/spool/checkresults/".

CompatLogger

Writes log files in a format that's compatible with Icinga 1.x.

Example:

library "compat"

object CompatLogger "my-log" {
  log_dir = "/var/log/icinga2/compat"
  rotation_method = "HOURLY"
}

Configuration Attributes:

Name	Description
log_dir	Optional. Path to the compat log directory. Defaults to LocalStateDir + "/log/icinga2/compat".
rotation_method	Optional. Specifies when to rotate log files. Can be one of "HOURLY", "DAILY", "WEEKLY" or "MONTHLY". Defaults to "HOURLY".

Dependency

Dependency objects are used to specify dependencies between hosts and services. Dependencies can be defined as Host-to-Host, Service-to-Service, Service-to-Host, or Host-to-Service relations.

Best Practice

Rather than creating a Dependency object for a specific host or service it is usually easier to just create a Dependency template and use the apply keyword to assign the dependency to a number of hosts or services. Use the to keyword to set the specific target type for Host or Service. Check the dependencies chapter for detailed examples.

Service-to-Service Example:

object Dependency "webserver-internet" {
  parent_host_name = "internet"
  parent_service_name = "ping4"

  child_host_name = "webserver"
  child_service_name = "ping4"

  states = [ OK, Warning ]

  disable_checks = true
}

Host-to-Host Example:

object Dependency "webserver-internet" {
  parent_host_name = "internet"

  child_host_name = "webserver"

  states = [ Up ]

  disable_checks = true
}

Configuration Attributes:

Name	Description
parent_host_name	Required. The parent host.
parent_service_name	Optional. The parent service. If omitted this dependency object is treated as host dependency.
child_host_name	Required. The child host.
child_service_name	Optional. The child service. If omitted this dependency object is treated as host dependency.
disable_checks	Optional. Whether to disable checks when this dependency fails. Defaults to false.
disable_notifications	Optional. Whether to disable notifications when this dependency fails. Defaults to true.
ignore_soft_states	Optional. Whether to ignore soft states for the reachability calculation. Defaults to true.
period	Optional. Time period during which this dependency is enabled.
states	Optional. A list of state filters when this dependency should be OK. Defaults to [ OK, Warning ] for services and [ Up ] for hosts.

Available state filters:

OK
Warning
Critical
Unknown
Up
Down

When using apply rules for dependencies, you can leave out certain attributes which will be automatically determined by Icinga 2.

Service-to-Host Dependency Example:

apply Dependency "internet" to Service {
  parent_host_name = "dsl-router"
  disable_checks = true

  assign where host.name != "dsl-router"
}

This example sets all service objects matching the assign condition into a dependency relation to the parent host object dsl-router as implicit child services.

Service-to-Service-on-the-same-Host Dependency Example:

apply Dependency "disable-nrpe-checks" to Service {
  parent_service_name = "nrpe-health"

  assign where service.check_command == "nrpe"
  ignore where service.name == "nrpe-health"
}

This example omits the parent_host_name attribute and Icinga 2 automatically sets its value to the name of the host object matched by the apply rule condition. All services where apply matches are made implicit child services in this dependency relation.

Dependency objects have composite names, i.e. their names are based on the child_host_name and child_service_name attributes and the name you specified. This means you can define more than one object with the same (short) name as long as one of the child_host_name and child_service_name attributes has a different value.

Endpoint

Endpoint objects are used to specify connection information for remote Icinga 2 instances.

Example:

object Endpoint "icinga2b" {
  host = "192.168.5.46"
  port = 5665
}

Configuration Attributes:

Name	Description
host	Optional. The hostname/IP address of the remote Icinga 2 instance.
port	Optional. The service name/port of the remote Icinga 2 instance. Defaults to `5665`.
log_duration	Optional. Duration for keeping replay logs on connection loss. Defaults to `1d`.

EventCommand

An event command definition.

Example:

object EventCommand "restart-httpd-event" {
  import "plugin-event-command"

  command = "/opt/bin/restart-httpd.sh"
}

Configuration Attributes:

Name	Description
execute	Required. The "execute" script method takes care of executing the event handler. In virtually all cases you should import the "plugin-event-command" template to take care of this setting.
command	Required. The command. This can either be an array of individual command arguments. Alternatively a string can be specified in which case the shell interpreter (usually /bin/sh) takes care of parsing the command.
env	Optional. A dictionary of macros which should be exported as environment variables prior to executing the command.
vars	Optional. A dictionary containing custom attributes that are specific to this command.
timeout	Optional. The command timeout in seconds. Defaults to 60 seconds.
arguments	Optional. A dictionary of command arguments.

Command arguments can be used the same way as for CheckCommand objects.

ExternalCommandListener

Implements the Icinga 1.x command pipe which can be used to send commands to Icinga.

Example:

library "compat"

object ExternalCommandListener "external" {
    command_path = "/var/run/icinga2/cmd/icinga2.cmd"
}

Configuration Attributes:

Name	Description
command_path	Optional. Path to the command pipe. Defaults to RunDir + "/icinga2/cmd/icinga2.cmd".

FileLogger

Specifies Icinga 2 logging to a file.

Example:

object FileLogger "debug-file" {
  severity = "debug"
  path = "/var/log/icinga2/debug.log"
}

Configuration Attributes:

Name	Description
path	Required. The log path.
severity	Optional. The minimum severity for this log. Can be "debug", "notice", "information", "warning" or "critical". Defaults to "information".

GelfWriter

Writes event log entries to a defined GELF receiver host (Graylog2, Logstash).

Example:

library "perfdata"

object GelfWriter "gelf" {
  host = "127.0.0.1"
  port = 12201
}

Configuration Attributes:

Name	Description
host	Optional. GELF receiver host address. Defaults to '127.0.0.1'.
port	Optional. GELF receiver port. Defaults to `12201`.
source	Optional. Source name for this instance. Defaults to `icinga2`.

GraphiteWriter

Writes check result metrics and performance data to a defined Graphite Carbon host.

Example:

library "perfdata"

object GraphiteWriter "graphite" {
  host = "127.0.0.1"
  port = 2003
}

Configuration Attributes:

Name	Description
host	Optional. Graphite Carbon host address. Defaults to '127.0.0.1'.
port	Optional. Graphite Carbon port. Defaults to 2003.
host_name_template	Optional. Metric prefix for host name. Defaults to "icinga.`host.name`".
service_name_template	Optional. Metric prefix for service name. Defaults to "icinga.`host.name`.`service.name`".

Metric prefix names can be modified using runtime macros.

Example with your custom global constant GraphiteEnv:

const GraphiteEnv = "icinga.env1"

host_name_template = GraphiteEnv + ".$host.name$"
service_name_template = GraphiteEnv + ".$host.name$.$service.name$"

Host

A host.

Example:

object Host NodeName {
  display_name = "Local host on this node"
  address = "127.0.0.1"
  address6 = "::1"

  groups = [ "all-hosts" ]

  check_command = "hostalive"
}

Configuration Attributes:

Name	Description
display_name	Optional. A short description of the host (e.g. displayed by external interfaces instead of the name if set).
address	Optional. The host's address. Available as command runtime macro $address$ if set.
address6	Optional. The host's address. Available as command runtime macro $address6$ if set.
groups	Optional. A list of host groups this host belongs to.
vars	Optional. A dictionary containing custom attributes that are specific to this host.
check_command	Required. The name of the check command.
max_check_attempts	Optional. The number of times a host is re-checked before changing into a hard state. Defaults to 3.
check_period	Optional. The name of a time period which determines when this host should be checked. Not set by default.
check_interval	Optional. The check interval (in seconds). This interval is used for checks when the host is in a `HARD` state. Defaults to 5 minutes.
retry_interval	Optional. The retry interval (in seconds). This interval is used for checks when the host is in a `SOFT` state. Defaults to 1 minute.
enable_notifications	Optional. Whether notifications are enabled. Defaults to true.
enable_active_checks	Optional. Whether active checks are enabled. Defaults to true.
enable_passive_checks	Optional. Whether passive checks are enabled. Defaults to true.
enable_event_handler	Optional. Enables event handlers for this host. Defaults to true.
enable_flapping	Optional. Whether flap detection is enabled. Defaults to false.
enable_perfdata	Optional. Whether performance data processing is enabled. Defaults to true.
event_command	Optional. The name of an event command that should be executed every time the host's state changes or the host is in a `SOFT` state.
flapping_threshold	Optional. The flapping threshold in percent when a host is considered to be flapping.
volatile	Optional. The volatile setting enables always `HARD` state types if `NOT-OK` state changes occur.
zone	Optional. The zone this object is a member of.
command_endpoint	Optional. The endpoint where commands are executed on.
notes	Optional. Notes for the host.
notes_url	Optional. Url for notes for the host (for example, in notification commands).
action_url	Optional. Url for actions for the host (for example, an external graphing tool).
icon_image	Optional. Icon image for the host. Used by external interfaces only.
icon_image_alt	Optional. Icon image description for the host. Used by external interface only.

Best Practice

The address and address6 attributes are required for running commands using the $address$ and $address6$ runtime macros.

Runtime Attributes:

Name	Type	Description
next_check	Number	When the next check occurs (as a UNIX timestamp).
check_attempt	Number	The current check attempt number.
state_type	Number	The current state type (0 = SOFT, 1 = HARD).
last_state_type	Number	The previous state type (0 = SOFT, 1 = HARD).
last_reachable	Boolean	Whether the host was reachable when the last check occurred.
last_check_result	CheckResult	The current check result.
last_state_change	Number	When the last state change occurred (as a UNIX timestamp).
last_hard_state_change	Number	When the last hard state change occurred (as a UNIX timestamp).
last_in_downtime	Boolean	Whether the host was in a downtime when the last check occurred.
acknowledgement	Number	The acknowledgement type (0 = NONE, 1 = NORMAL, 2 = STICKY).
acknowledgement_expiry	Number	When the acknowledgement expires (as a UNIX timestamp; 0 = no expiry).
comments	Dictionary	The comments for this host.
downtimes	Dictionary	The downtimes for this host.
state	Number	The current state (0 = UP, 1 = DOWN).
last_state	Number	The previous state (0 = UP, 1 = DOWN).
last_hard_state	Number	The last hard state (0 = UP, 1 = DOWN).

HostGroup

A group of hosts.

Best Practice

Assign host group members using the group assign rules.

Example:

object HostGroup "my-hosts" {
  display_name = "My hosts"
}

Configuration Attributes:

Name	Description
display_name	Optional. A short description of the host group.
groups	Optional. An array of nested group names.

IcingaStatusWriter

The IcingaStatusWriter feature periodically dumps the current status and performance data from Icinga 2 and all registered features into a defined JSON file.

Example:

object IcingaStatusWriter "status" {
  status_path = LocalStateDir + "/cache/icinga2/status.json"
  update_interval = 15s
}

Configuration Attributes:

Name	Description
status_path	Optional. Path to cluster status file. Defaults to LocalStateDir + "/cache/icinga2/status.json"
update_interval	Optional. The interval in which the status files are updated. Defaults to 15 seconds.

IdoMySqlConnection

IDO database adapter for MySQL.

Example:

library "db_ido_mysql"

object IdoMysqlConnection "mysql-ido" {
  host = "127.0.0.1"
  port = 3306
  user = "icinga"
  password = "icinga"
  database = "icinga"
  table_prefix = "icinga_"
  instance_name = "icinga2"
  instance_description = "icinga2 instance"

  cleanup = {
    downtimehistory_age = 48h
    logentries_age = 31d
  }

  categories = DbCatConfig | DbCatState
}

Configuration Attributes:

Name	Description
host	Optional. MySQL database host address. Defaults to "localhost".
port	Optional. MySQL database port. Defaults to 3306.
socket_path	Optional. MySQL socket path.
user	Optional. MySQL database user with read/write permission to the icinga database. Defaults to "icinga".
password	Optional. MySQL database user's password. Defaults to "icinga".
database	Optional. MySQL database name. Defaults to "icinga".
table_prefix	Optional. MySQL database table prefix. Defaults to "icinga_".
instance_name	Optional. Unique identifier for the local Icinga 2 instance. Defaults to "default".
instance_description	Optional. Description for the Icinga 2 instance.
enable_ha	Optional. Enable the high availability functionality. Only valid in a cluster setup. Defaults to "true".
failover_timeout	Optional. Set the failover timeout in a HA cluster. Must not be lower than 60s. Defaults to "60s".
cleanup	Optional. Dictionary with items for historical table cleanup.
categories	Optional. The types of information that should be written to the database.

Cleanup Items:

Name	Description
acknowledgements_age	Optional. Max age for acknowledgements table rows (entry_time). Defaults to 0 (never).
commenthistory_age	Optional. Max age for commenthistory table rows (entry_time). Defaults to 0 (never).
contactnotifications_age	Optional. Max age for contactnotifications table rows (start_time). Defaults to 0 (never).
contactnotificationmethods_age	Optional. Max age for contactnotificationmethods table rows (start_time). Defaults to 0 (never).
downtimehistory_age	Optional. Max age for downtimehistory table rows (entry_time). Defaults to 0 (never).
eventhandlers_age	Optional. Max age for eventhandlers table rows (start_time). Defaults to 0 (never).
externalcommands_age	Optional. Max age for externalcommands table rows (entry_time). Defaults to 0 (never).
flappinghistory_age	Optional. Max age for flappinghistory table rows (event_time). Defaults to 0 (never).
hostchecks_age	Optional. Max age for hostalives table rows (start_time). Defaults to 0 (never).
logentries_age	Optional. Max age for logentries table rows (logentry_time). Defaults to 0 (never).
notifications_age	Optional. Max age for notifications table rows (start_time). Defaults to 0 (never).
processevents_age	Optional. Max age for processevents table rows (event_time). Defaults to 0 (never).
statehistory_age	Optional. Max age for statehistory table rows (state_time). Defaults to 0 (never).
servicechecks_age	Optional. Max age for servicechecks table rows (start_time). Defaults to 0 (never).
systemcommands_age	Optional. Max age for systemcommands table rows (start_time). Defaults to 0 (never).

Data Categories:

Name	Description	Required by
DbCatConfig	Configuration data	Icinga Web/Reporting
DbCatState	Current state data	Icinga Web/Reporting
DbCatAcknowledgement	Acknowledgements	Icinga Web/Reporting
DbCatComment	Comments	Icinga Web/Reporting
DbCatDowntime	Downtimes	Icinga Web/Reporting
DbCatEventHandler	Event handler data	Icinga Web/Reporting
DbCatExternalCommand	External commands	Icinga Web/Reporting
DbCatFlapping	Flap detection data	Icinga Web/Reporting
DbCatCheck	Check results	--
DbCatLog	Log messages	Icinga Web/Reporting
DbCatNotification	Notifications	Icinga Web/Reporting
DbCatProgramStatus	Program status data	Icinga Web/Reporting
DbCatRetention	Retention data	Icinga Web/Reporting
DbCatStateHistory	Historical state data	Icinga Web/Reporting

Multiple categories can be combined using the | operator. In addition to the category flags listed above the DbCatEverything flag may be used as a shortcut for listing all flags.

External interfaces like Icinga Web require everything except DbCatCheck which is the default value if categories is not set.

IdoPgSqlConnection

IDO database adapter for PostgreSQL.

Example:

library "db_ido_pgsql"

object IdoMysqlConnection "pgsql-ido" {
  host = "127.0.0.1"
  port = 5432
  user = "icinga"
  password = "icinga"
  database = "icinga"
  table_prefix = "icinga_"
  instance_name = "icinga2"
  instance_description = "icinga2 instance"

  cleanup = {
    downtimehistory_age = 48h
    logentries_age = 31d
  }

  categories = DbCatConfig | DbCatState
}

Configuration Attributes:

Name	Description
host	Optional. PostgreSQL database host address. Defaults to "localhost".
port	Optional. PostgreSQL database port. Defaults to "5432".
user	Optional. PostgreSQL database user with read/write permission to the icinga database. Defaults to "icinga".
password	Optional. PostgreSQL database user's password. Defaults to "icinga".
database	Optional. PostgreSQL database name. Defaults to "icinga".
table_prefix	Optional. PostgreSQL database table prefix. Defaults to "icinga_".
instance_name	Optional. Unique identifier for the local Icinga 2 instance. Defaults to "default".
instance_description	Optional. Description for the Icinga 2 instance.
enable_ha	Optional. Enable the high availability functionality. Only valid in a cluster setup. Defaults to "true".
failover_timeout	Optional. Set the failover timeout in a HA cluster. Must not be lower than 60s. Defaults to "60s".
cleanup	Optional. Dictionary with items for historical table cleanup.
categories	Optional. The types of information that should be written to the database.

Cleanup Items:

Name	Description
acknowledgements_age	Optional. Max age for acknowledgements table rows (entry_time). Defaults to 0 (never).
commenthistory_age	Optional. Max age for commenthistory table rows (entry_time). Defaults to 0 (never).
contactnotifications_age	Optional. Max age for contactnotifications table rows (start_time). Defaults to 0 (never).
contactnotificationmethods_age	Optional. Max age for contactnotificationmethods table rows (start_time). Defaults to 0 (never).
downtimehistory_age	Optional. Max age for downtimehistory table rows (entry_time). Defaults to 0 (never).
eventhandlers_age	Optional. Max age for eventhandlers table rows (start_time). Defaults to 0 (never).
externalcommands_age	Optional. Max age for externalcommands table rows (entry_time). Defaults to 0 (never).
flappinghistory_age	Optional. Max age for flappinghistory table rows (event_time). Defaults to 0 (never).
hostchecks_age	Optional. Max age for hostalives table rows (start_time). Defaults to 0 (never).
logentries_age	Optional. Max age for logentries table rows (logentry_time). Defaults to 0 (never).
notifications_age	Optional. Max age for notifications table rows (start_time). Defaults to 0 (never).
processevents_age	Optional. Max age for processevents table rows (event_time). Defaults to 0 (never).
statehistory_age	Optional. Max age for statehistory table rows (state_time). Defaults to 0 (never).
servicechecks_age	Optional. Max age for servicechecks table rows (start_time). Defaults to 0 (never).
systemcommands_age	Optional. Max age for systemcommands table rows (start_time). Defaults to 0 (never).

Data Categories:

Name	Description	Required by
DbCatConfig	Configuration data	Icinga Web/Reporting
DbCatState	Current state data	Icinga Web/Reporting
DbCatAcknowledgement	Acknowledgements	Icinga Web/Reporting
DbCatComment	Comments	Icinga Web/Reporting
DbCatDowntime	Downtimes	Icinga Web/Reporting
DbCatEventHandler	Event handler data	Icinga Web/Reporting
DbCatExternalCommand	External commands	Icinga Web/Reporting
DbCatFlapping	Flap detection data	Icinga Web/Reporting
DbCatCheck	Check results	--
DbCatLog	Log messages	Icinga Web/Reporting
DbCatNotification	Notifications	Icinga Web/Reporting
DbCatProgramStatus	Program status data	Icinga Web/Reporting
DbCatRetention	Retention data	Icinga Web/Reporting
DbCatStateHistory	Historical state data	Icinga Web/Reporting

Multiple categories can be combined using the | operator. In addition to the category flags listed above the DbCatEverything flag may be used as a shortcut for listing all flags.

External interfaces like Icinga Web require everything except DbCatCheck which is the default value if categories is not set.

LiveStatusListener

Livestatus API interface available as TCP or UNIX socket. Historical table queries require the CompatLogger feature enabled pointing to the log files using the compat_log_path configuration attribute.

Example:

library "livestatus"

object LivestatusListener "livestatus-tcp" {
  socket_type = "tcp"
  bind_host = "127.0.0.1"
  bind_port = "6558"
}

object LivestatusListener "livestatus-unix" {
  socket_type = "unix"
  socket_path = "/var/run/icinga2/cmd/livestatus"
}

Configuration Attributes:

Name	Description
socket_type	Optional. Specifies the socket type. Can be either "tcp" or "unix". Defaults to "unix".
bind_host	Optional. Only valid when socket_type is "tcp". Host address to listen on for connections. Defaults to "127.0.0.1".
bind_port	Optional. Only valid when `socket_type` is "tcp". Port to listen on for connections. Defaults to 6558.
socket_path	Optional. Only valid when `socket_type` is "unix". Specifies the path to the UNIX socket file. Defaults to RunDir + "/icinga2/cmd/livestatus".
compat_log_path	Optional. Required for historical table queries. Requires `CompatLogger` feature enabled. Defaults to LocalStateDir + "/log/icinga2/compat"

Note

UNIX sockets are not supported on Windows.

Notification

Notification objects are used to specify how users should be notified in case of host and service state changes and other events.

Best Practice

Rather than creating a Notification object for a specific host or service it is usually easier to just create a Notification template and use the apply keyword to assign the notification to a number of hosts or services. Use the to keyword to set the specific target type for Host or Service. Check the notifications chapter for detailed examples.

Example:

object Notification "localhost-ping-notification" {
  host_name = "localhost"
  service_name = "ping4"

  command = "mail-notification"

  users = [ "user1", "user2" ]

  types = [ Problem, Recovery ]
}

Configuration Attributes:

Name	Description
host_name	Required. The name of the host this notification belongs to.
service_name	Optional. The short name of the service this notification belongs to. If omitted this notification object is treated as host notification.
vars	Optional. A dictionary containing custom attributes that are specific to this notification object.
users	Optional. A list of user names who should be notified.
user_groups	Optional. A list of user group names who should be notified.
times	Optional. A dictionary containing `begin` and `end` attributes for the notification.
command	Required. The name of the notification command which should be executed when the notification is triggered.
interval	Optional. The notification interval (in seconds). This interval is used for active notifications. Defaults to 30 minutes. If set to 0, re-notifications are disabled.
period	Optional. The name of a time period which determines when this notification should be triggered. Not set by default.
zone	Optional. The zone this object is a member of.
types	Optional. A list of type filters when this notification should be triggered. By default everything is matched.
states	Optional. A list of state filters when this notification should be triggered. By default everything is matched.

Available notification state filters:

OK
Warning
Critical
Unknown
Up
Down

Available notification type filters:

DowntimeStart
DowntimeEnd
DowntimeRemoved
Custom
Acknowledgement
Problem
Recovery
FlappingStart
FlappingEnd

Runtime Attributes:

Name	Type	Description
last_notification	Number	When the last notification was sent for this Notification object (as a UNIX timestamp).
next_notifcation	Number	When the next notification is going to be sent for this assuming the associated host/service is still in a non-OK state (as a UNIX timestamp).
notification_number	Number	The notification number
last_problem_notification	Number	When the last notification was sent for a problem (as a UNIX timestamp).

NotificationCommand

A notification command definition.

Example:

object NotificationCommand "mail-service-notification" {
  import "plugin-notification-command"

  command = [
    SysconfDir + "/icinga2/scripts/mail-notification.sh"
  ]

  env = {
    NOTIFICATIONTYPE = "$notification.type$"
    SERVICEDESC = "$service.name$"
    HOSTALIAS = "$host.display_name$"
    HOSTADDRESS = "$address$"
    SERVICESTATE = "$service.state$"
    LONGDATETIME = "$icinga.long_date_time$"
    SERVICEOUTPUT = "$service.output$"
    NOTIFICATIONAUTHORNAME = "$notification.author$"
    NOTIFICATIONCOMMENT = "$notification.comment$"
    HOSTDISPLAYNAME = "$host.display_name$"
    SERVICEDISPLAYNAME = "$service.display_name$"
    USEREMAIL = "$user.email$"
  }
}

Configuration Attributes:

Name	Description
execute	Required. The "execute" script method takes care of executing the notification. In virtually all cases you should import the "plugin-notification-command" template to take care of this setting.
command	Required. The command. This can either be an array of individual command arguments. Alternatively a string can be specified in which case the shell interpreter (usually /bin/sh) takes care of parsing the command.
env	Optional. A dictionary of macros which should be exported as environment variables prior to executing the command.
vars	Optional. A dictionary containing custom attributes that are specific to this command.
timeout	Optional. The command timeout in seconds. Defaults to 60 seconds.
arguments	Optional. A dictionary of command arguments.

Command arguments can be used the same way as for CheckCommand objects.

NotificationComponent

The notification component is responsible for sending notifications. There are no configurable options.

Example:

library "notification"

object NotificationComponent "notification" { }

Configuration Attributes:

Name	Description
enable_ha	Optional. Enable the high availability functionality. Only valid in a cluster setup. Defaults to "true".

OpenTsdbWriter

Writes check result metrics and performance data to OpenTSDB.

Example:

library "perfdata"

object OpenTsdbWriter "opentsdb" {
  host = "127.0.0.1"
  port = 4242
}

Configuration Attributes:

Name	Description
host	Optional. OpenTSDB host address. Defaults to '127.0.0.1'.
port	Optional. OpenTSDB port. Defaults to 4242.

PerfdataWriter

Writes check result performance data to a defined path using macro pattern consisting of custom attributes and runtime macros.

Example:

library "perfdata"

object PerfdataWriter "pnp" {
  host_perfdata_path = "/var/spool/icinga2/perfdata/host-perfdata"

  service_perfdata_path = "/var/spool/icinga2/perfdata/service-perfdata"

  host_format_template = "DATATYPE::HOSTPERFDATA\tTIMET::$icinga.timet$\tHOSTNAME::$host.name$\tHOSTPERFDATA::$host.perfdata$\tHOSTCHECKCOMMAND::$host.check_command$\tHOSTSTATE::$host.state$\tHOSTSTATETYPE::$host.state_type$"
  service_format_template = "DATATYPE::SERVICEPERFDATA\tTIMET::$icinga.timet$\tHOSTNAME::$host.name$\tSERVICEDESC::$service.name$\tSERVICEPERFDATA::$service.perfdata$\tSERVICECHECKCOMMAND::$service.check_command$\tHOSTSTATE::$host.state$\tHOSTSTATETYPE::$host.state_type$\tSERVICESTATE::$service.state$\tSERVICESTATETYPE::$service.state_type$"

  rotation_interval = 15s
}

Configuration Attributes:

Name	Description
host_perfdata_path	Optional. Path to the host performance data file. Defaults to LocalStateDir + "/spool/icinga2/perfdata/host-perfdata".
service_perfdata_path	Optional. Path to the service performance data file. Defaults to LocalStateDir + "/spool/icinga2/perfdata/service-perfdata".
host_temp_path	Optional. Path to the temporary host file. Defaults to LocalStateDir + "/spool/icinga2/tmp/host-perfdata".
service_temp_path	Optional. Path to the temporary service file. Defaults to LocalStateDir + "/spool/icinga2/tmp/service-perfdata".
host_format_template	Optional. Host Format template for the performance data file. Defaults to a template that's suitable for use with PNP4Nagios.
service_format_template	Optional. Service Format template for the performance data file. Defaults to a template that's suitable for use with PNP4Nagios.
rotation_interval	Optional. Rotation interval for the files specified in `{host,service}_perfdata_path`. Defaults to 30 seconds.

When rotating the performance data file the current UNIX timestamp is appended to the path specified in host_perfdata_path and service_perfdata_path to generate a unique filename.

ScheduledDowntime

ScheduledDowntime objects can be used to set up recurring downtimes for hosts/services.

Best Practice

Rather than creating a ScheduledDowntime object for a specific host or service it is usually easier to just create a ScheduledDowntime template and use the apply keyword to assign the scheduled downtime to a number of hosts or services. Use the to keyword to set the specific target type for Host or Service. Check the recurring downtimes example for details.

Example:

object ScheduledDowntime "some-downtime" {
  host_name = "localhost"
  service_name = "ping4"

  author = "icingaadmin"
  comment = "Some comment"

  fixed = false
  duration = 30m

  ranges = {
    "sunday" = "02:00-03:00"
  }
}

Configuration Attributes:

Name	Description
host_name	Required. The name of the host this scheduled downtime belongs to.
service_name	Optional. The short name of the service this scheduled downtime belongs to. If omitted this downtime object is treated as host downtime.
author	Required. The author of the downtime.
comment	Required. A comment for the downtime.
fixed	Optional. Whether this is a fixed downtime. Defaults to true.
duration	Optional. How long the downtime lasts. Only has an effect for flexible (non-fixed) downtimes.
ranges	Required. A dictionary containing information which days and durations apply to this timeperiod.

ScheduledDowntime objects have composite names, i.e. their names are based on the host_name and service_name attributes and the name you specified. This means you can define more than one object with the same (short) name as long as one of the host_name and service_name attributes has a different value.

Service

Service objects describe network services and how they should be checked by Icinga 2.

Best Practice

Rather than creating a Service object for a specific host it is usually easier to just create a Service template and use the apply keyword to assign the service to a number of hosts. Check the apply chapter for details.

Example:

object Service "uptime" {
  host_name = "localhost"

  display_name = "localhost Uptime"

  check_command = "check_snmp"

  vars.community = "public"
  vars.oid = "DISMAN-EVENT-MIB::sysUpTimeInstance"

  check_interval = 60s
  retry_interval = 15s

  groups = [ "all-services", "snmp" ]
}

Configuration Attributes:

Name	Description
display_name	Optional. A short description of the service.
host_name	Required. The host this service belongs to. There must be a `Host` object with that name.
name	Required. The service name. Must be unique on a per-host basis (Similar to the service_description attribute in Icinga 1.x).
groups	Optional. The service groups this service belongs to.
vars	Optional. A dictionary containing custom attributes that are specific to this service.
check_command	Required. The name of the check command.
max_check_attempts	Optional. The number of times a service is re-checked before changing into a hard state. Defaults to 3.
check_period	Optional. The name of a time period which determines when this service should be checked. Not set by default.
check_interval	Optional. The check interval (in seconds). This interval is used for checks when the service is in a `HARD` state. Defaults to 5 minutes.
retry_interval	Optional. The retry interval (in seconds). This interval is used for checks when the service is in a `SOFT` state. Defaults to 1 minute.
enable_notifications	Optional. Whether notifications are enabled. Defaults to true.
enable_active_checks	Optional. Whether active checks are enabled. Defaults to true.
enable_passive_checks	Optional. Whether passive checks are enabled. Defaults to true.
enable_event_handler	Optional. Enables event handlers for this host. Defaults to true.
enable_flapping	Optional. Whether flap detection is enabled. Defaults to false.
enable_perfdata	Optional. Whether performance data processing is enabled. Defaults to true.
event_command	Optional. The name of an event command that should be executed every time the service's state changes or the service is in a `SOFT` state.
flapping_threshold	Optional. The flapping threshold in percent when a service is considered to be flapping.
volatile	Optional. The volatile setting enables always `HARD` state types if `NOT-OK` state changes occur.
zone	Optional. The zone this object is a member of.
command_endpoint	Optional. The endpoint where commands are executed on.
notes	Optional. Notes for the service.
notes_url	Optional. Url for notes for the service (for example, in notification commands).
action_url	Optional. Url for actions for the service (for example, an external graphing tool).
icon_image	Optional. Icon image for the service. Used by external interfaces only.
icon_image_alt	Optional. Icon image description for the service. Used by external interface only.

Service objects have composite names, i.e. their names are based on the host_name attribute and the name you specified. This means you can define more than one object with the same (short) name as long as the host_name attribute has a different value.

Runtime Attributes:

Name	Type	Description
next_check	Number	When the next check occurs (as a UNIX timestamp).
check_attempt	Number	The current check attempt number.
state_type	Number	The current state type (0 = SOFT, 1 = HARD).
last_state_type	Number	The previous state type (0 = SOFT, 1 = HARD).
last_reachable	Boolean	Whether the service was reachable when the last check occurred.
last_check_result	CheckResult	The current check result.
last_state_change	Number	When the last state change occurred (as a UNIX timestamp).
last_hard_state_change	Number	When the last hard state change occurred (as a UNIX timestamp).
last_in_downtime	Boolean	Whether the service was in a downtime when the last check occurred.
acknowledgement	Number	The acknowledgement type (0 = NONE, 1 = NORMAL, 2 = STICKY).
acknowledgement_expiry	Number	When the acknowledgement expires (as a UNIX timestamp; 0 = no expiry).
comments	Dictionary	The comments for this service.
downtimes	Dictionary	The downtimes for this service.
state	Number	The current state (0 = OK, 1 = WARNING, 2 = CRITICAL, 3 = UNKNOWN).
last_state	Number	The previous state (0 = OK, 1 = WARNING, 2 = CRITICAL, 3 = UNKNOWN).
last_hard_state	Number	The last hard state (0 = OK, 1 = WARNING, 2 = CRITICAL, 3 = UNKNOWN).

ServiceGroup

A group of services.

Best Practice

Assign service group members using the group assign rules.

Example:

object ServiceGroup "snmp" {
  display_name = "SNMP services"
}

Configuration Attributes:

Name	Description
display_name	Optional. A short description of the service group.
groups	Optional. An array of nested group names.

StatusDataWriter

Periodically writes status data files which are used by the Classic UI and other third-party tools.

Example:

library "compat"

object StatusDataWriter "status" {
    status_path = "/var/cache/icinga2/status.dat"
    objects_path = "/var/cache/icinga2/objects.cache"
    update_interval = 30s
}

Configuration Attributes:

Name	Description
status_path	Optional. Path to the status.dat file. Defaults to LocalStateDir + "/cache/icinga2/status.dat".
objects_path	Optional. Path to the objects.cache file. Defaults to LocalStateDir + "/cache/icinga2/objects.cache".
update_interval	Optional. The interval in which the status files are updated. Defaults to 15 seconds.

SyslogLogger

Specifies Icinga 2 logging to syslog.

Example:

object SyslogLogger "crit-syslog" {
  severity = "critical"
}

Configuration Attributes:

Name	Description
severity	Optional. The minimum severity for this log. Can be "debug", "notice", "information", "notice", "warning" or "critical". Defaults to "warning".

TimePeriod

Time periods can be used to specify when hosts/services should be checked or to limit when notifications should be sent out.

Example:

object TimePeriod "24x7" {
  import "legacy-timeperiod"

  display_name = "Icinga 2 24x7 TimePeriod"

  ranges = {
    monday = "00:00-24:00"
    tuesday = "00:00-24:00"
    wednesday = "00:00-24:00"
    thursday = "00:00-24:00"
    friday = "00:00-24:00"
    saturday = "00:00-24:00"
    sunday = "00:00-24:00"
  }
}

Configuration Attributes:

Name	Description
display_name	Optional. A short description of the time period.
update	Required. The "update" script method takes care of updating the internal representation of the time period. In virtually all cases you should import the "legacy-timeperiod" template to take care of this setting.
ranges	Required. A dictionary containing information which days and durations apply to this timeperiod.

The /etc/icinga2/conf.d/timeperiods.conf file is usually used to define timeperiods including this one.

Runtime Attributes:

Name	Type	Description
is_inside	Boolean	Whether we're currently inside this timeperiod.

User

A user.

Example:

object User "icingaadmin" {
  display_name = "Icinga 2 Admin"
  groups = [ "icingaadmins" ]
  email = "icinga@localhost"
  pager = "icingaadmin@localhost.localdomain"

  period = "24x7"

  states = [ OK, Warning, Critical, Unknown ]
  types = [ Problem, Recovery ]

  vars.additional_notes = "This is the Icinga 2 Admin account."
}

Available notification state filters:

OK
Warning
Critical
Unknown
Up
Down

Available notification type filters:

DowntimeStart
DowntimeEnd
DowntimeRemoved
Custom
Acknowledgement
Problem
Recovery
FlappingStart
FlappingEnd

Configuration Attributes:

Name	Description
display_name	Optional. A short description of the user.
email	Optional. An email string for this user. Useful for notification commands.
pager	Optional. A pager string for this user. Useful for notification commands.
vars	Optional. A dictionary containing custom attributes that are specific to this user.
groups	Optional. An array of group names.
enable_notifications	Optional. Whether notifications are enabled for this user.
period	Optional. The name of a time period which determines when a notification for this user should be triggered. Not set by default.
types	Optional. A set of type filters when this notification should be triggered. By default everything is matched.
states	Optional. A set of state filters when this notification should be triggered. By default everything is matched.

Runtime Attributes:

Name	Type	Description
last_notification	Number	When the last notification was sent for this user (as a UNIX timestamp).

UserGroup

A user group.

Best Practice

Assign user group members using the group assign rules.

Example:

object UserGroup "icingaadmins" {
    display_name = "Icinga 2 Admin Group"
}

Configuration Attributes:

Name	Description
display_name	Optional. A short description of the user group.
groups	Optional. An array of nested group names.

Zone

Zone objects are used to specify which Icinga 2 instances are located in a zone.

Example:

object Zone "config-ha-master" {
  endpoints = [ "icinga2a", "icinga2b" ]

}

object Zone "check-satellite" {
  endpoints = [ "icinga2c" ]
  parent = "config-ha-master"
}

Configuration Attributes:

Name	Description
endpoints	Optional. Dictionary with endpoints located in this zone.
parent	Optional. The name of the parent zone.
global	Optional. Whether configuration files for this zone should be synced to all endpoints. Defaults to false.

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Object Types

ApiListener

ApiUser

CheckCommand

CheckCommand Arguments

CheckerComponent

CheckResultReader

CompatLogger

Dependency

Endpoint

EventCommand

ExternalCommandListener

FileLogger

GelfWriter

GraphiteWriter

Host

HostGroup

IcingaStatusWriter

IdoMySqlConnection

IdoPgSqlConnection

LiveStatusListener

Notification

NotificationCommand

NotificationComponent

OpenTsdbWriter

PerfdataWriter

ScheduledDowntime

Service

ServiceGroup

StatusDataWriter

SyslogLogger

TimePeriod

User

UserGroup

Zone

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