diff options
Diffstat (limited to '')
| -rw-r--r-- | doc/04-configuration.md | 737 |
1 files changed, 737 insertions, 0 deletions
diff --git a/doc/04-configuration.md b/doc/04-configuration.md new file mode 100644 index 0000000..316aaba --- /dev/null +++ b/doc/04-configuration.md @@ -0,0 +1,737 @@ +# Configuration <a id="configuration"></a> + +The Icinga [configuration](https://icinga.com/products/configuration/) +can be easily managed with either the [Icinga Director](https://icinga.com/docs/director/latest/), +config management tools or plain text within the [Icinga DSL](04-configuration.md#configuration). + +Before looking into web based configuration or any sort of automation, +we recommend to start with the configuration files and fully understand +the possibilities of the Icinga DSL (Domain Specific Language). + +The package installation provides example configuration which already +monitors the local Icinga server. You can view the monitoring details +in Icinga Web. + + + +The [Language Reference](17-language-reference.md#language-reference) chapter explains details +on value types (string, number, dictionaries, etc.) and the general configuration syntax. + +## Configuration Best Practice <a id="configuration-best-practice"></a> + +If you are ready to configure additional hosts, services, notifications, +dependencies, etc., you should think about the requirements first and then +decide for a possible strategy. + +There are many ways of creating Icinga 2 configuration objects: + +* The [Icinga Director](https://icinga.com/docs/director/latest/) as web based and/or automation configuration interface + * [Monitoring Automation with Icinga - The Director](https://icinga.com/2019/04/23/monitoring-automation-with-icinga-the-director/) +* Manually with your preferred editor, for example vi(m), nano, notepad, etc. +* Generated by a [configuration management tool](13-addons.md#configuration-tools) such as Puppet, Chef, Ansible, etc. +* A custom exporter script from your CMDB or inventory tool +* etc. + +Find the best strategy for your own configuration and ask yourself the following questions: + +* Do your hosts share a common group of services (for example linux hosts with disk, load, etc. checks)? +* Only a small set of users receives notifications and escalations for all hosts/services? + +If you can at least answer one of these questions with yes, look for the +[apply rules](03-monitoring-basics.md#using-apply) logic instead of defining objects on a per +host and service basis. + +* You are required to define specific configuration for each host/service? +* Does your configuration generation tool already know about the host-service-relationship? + +Then you should look for the object specific configuration setting `host_name` etc. accordingly. + +You decide on the "best" layout for configuration files and directories. Ensure that +the [icinga2.conf](04-configuration.md#icinga2-conf) configuration file includes them. + +Consider these ideas: + +* tree-based on locations, host groups, specific host attributes with sub levels of directories. +* flat `hosts.conf`, `services.conf`, etc. files for rule based configuration. +* generated configuration with one file per host and a global configuration for groups, users, etc. +* one big file generated from an external application (probably a bad idea for maintaining changes). +* your own. + +In either way of choosing the right strategy you should additionally check the following: + +* Are there any specific attributes describing the host/service you could set as `vars` custom variables? +You can later use them for applying assign/ignore rules, or export them into external interfaces. +* Put hosts into hostgroups, services into servicegroups and use these attributes for your apply rules. +* Use templates to store generic attributes for your objects and apply rules making your configuration more readable. +Details can be found in the [using templates](03-monitoring-basics.md#object-inheritance-using-templates) chapter. +* Apply rules may overlap. Keep a central place (for example, [services.conf](04-configuration.md#services-conf) or [notifications.conf](04-configuration.md#notifications-conf)) storing +the configuration instead of defining apply rules deep in your configuration tree. +* Every plugin used as check, notification or event command requires a `Command` definition. +Further details can be looked up in the [check commands](03-monitoring-basics.md#check-commands) chapter. + +If you are planning to use a distributed monitoring setup with master, satellite and client installations +take the configuration location into account too. Everything configured on the master, synced to all other +nodes? Or any specific local configuration (e.g. health checks)? + +There is a detailed chapter on [distributed monitoring scenarios](06-distributed-monitoring.md#distributed-monitoring-scenarios). +Please ensure to have read the [introduction](06-distributed-monitoring.md#distributed-monitoring) at first glance. + +If you happen to have further questions, do not hesitate to join the +[community forum](https://community.icinga.com) +and ask community members for their experience and best practices. + +## Your Configuration <a id="your-configuration"></a> + +If you prefer to organize your own local object tree, you can also remove +`include_recursive "conf.d"` from your icinga2.conf file. + +Create a new configuration directory, e.g. `objects.d` and include it +in your icinga2.conf file. + +``` +[root@icinga2-master1.localdomain /]# mkdir -p /etc/icinga2/objects.d + +[root@icinga2-master1.localdomain /]# vim /etc/icinga2/icinga2.conf + +/* Local object configuration on our master instance. */ +include_recursive "objects.d" +``` + +This approach is used by the [Icinga 2 Puppet module](https://icinga.com/products/integrations/puppet/). + +If you plan to setup a distributed setup with HA clusters and clients, please refer to [this chapter](#06-distributed-monitoring.md#distributed-monitoring-top-down) +for examples with `zones.d` as configuration directory. + +## Configuration Overview <a id="configuring-icinga2-overview"></a> + +### icinga2.conf <a id="icinga2-conf"></a> + +An example configuration file is installed for you in `/etc/icinga2/icinga2.conf`. + +Here's a brief description of the example configuration: + +``` +/** +* Icinga 2 configuration file +* -- this is where you define settings for the Icinga application including +* which hosts/services to check. +* +* For an overview of all available configuration options please refer +* to the documentation that is distributed as part of Icinga 2. +*/ +``` + +Icinga 2 supports [C/C++-style comments](17-language-reference.md#comments). + +/** +* The constants.conf defines global constants. +*/ +include "constants.conf" + +The `include` directive can be used to include other files. + +``` +/** +* The zones.conf defines zones for a cluster setup. +* Not required for single instance setups. +*/ +include "zones.conf" +``` + +The [Icinga Template Library](10-icinga-template-library.md#icinga-template-library) provides a set of common templates +and [CheckCommand](03-monitoring-basics.md#check-commands) definitions. + +``` +/** +* The Icinga Template Library (ITL) provides a number of useful templates +* and command definitions. +* Common monitoring plugin command definitions are included separately. +*/ +include <itl> +include <plugins> +include <plugins-contrib> +include <manubulon> + +/** +* This includes the Icinga 2 Windows plugins. These command definitions +* are required on a master node when a client is used as command endpoint. +*/ +include <windows-plugins> + +/** +* This includes the NSClient++ check commands. These command definitions +* are required on a master node when a client is used as command endpoint. +*/ +include <nscp> + +/** +* The features-available directory contains a number of configuration +* files for features which can be enabled and disabled using the +* icinga2 feature enable / icinga2 feature disable CLI commands. +* These commands work by creating and removing symbolic links in +* the features-enabled directory. +*/ +include "features-enabled/*.conf" +``` + +This `include` directive takes care of including the configuration files for all +the features which have been enabled with `icinga2 feature enable`. See +[Enabling/Disabling Features](11-cli-commands.md#enable-features) for more details. + +``` +/** +* Although in theory you could define all your objects in this file +* the preferred way is to create separate directories and files in the conf.d +* directory. Each of these files must have the file extension ".conf". +*/ +include_recursive "conf.d" +``` + +You can put your own configuration files in the [conf.d](04-configuration.md#conf-d) directory. This +directive makes sure that all of your own configuration files are included. + +### constants.conf <a id="constants-conf"></a> + +The `constants.conf` configuration file can be used to define global constants. + +By default, you need to make sure to set these constants: + +* The `PluginDir` constant must be set to the path where the [Monitoring Project](https://www.monitoring-plugins.org/) plugins are installed. +This constant is used by a number of +[built-in check command definitions](10-icinga-template-library.md#icinga-template-library). +* The `NodeName` constant defines your local node name. Should be set to FQDN which is the default +if not set. This constant is required for local host configuration, monitoring remote clients and +cluster setup. + +Example: + +``` +/* The directory which contains the plugins from the Monitoring Plugins project. */ +const PluginDir = "/usr/lib64/nagios/plugins" + +/* The directory which contains the Manubulon plugins. +* Check the documentation, chapter "SNMP Manubulon Plugin Check Commands", for details. +*/ +const ManubulonPluginDir = "/usr/lib64/nagios/plugins" + +/* Our local instance name. By default this is the server's hostname as returned by `hostname --fqdn`. +* This should be the common name from the API certificate. +*/ +//const NodeName = "localhost" + +/* Our local zone name. */ +const ZoneName = NodeName + +/* Secret key for remote node tickets */ +const TicketSalt = "" +``` + +The `ZoneName` and `TicketSalt` constants are required for remote client +and distributed setups. The `node setup/wizard` CLI tools take care of +populating these values. + +### zones.conf <a id="zones-conf"></a> + +This file can be used to specify the required [Zone](09-object-types.md#objecttype-zone) +and [Endpoint](09-object-types.md#objecttype-endpoint) configuration object for +[distributed monitoring](06-distributed-monitoring.md#distributed-monitoring). + +By default the `NodeName` and `ZoneName` [constants](04-configuration.md#constants-conf) will be used. + +It also contains several [global zones](06-distributed-monitoring.md#distributed-monitoring-global-zone-config-sync) +for distributed monitoring environments. + +Please ensure to modify this configuration with real names i.e. use the FQDN +mentioned in [this chapter](06-distributed-monitoring.md#distributed-monitoring-conventions) +for your `Zone` and `Endpoint` object names. + +### The conf.d Directory <a id="conf-d"></a> + +This directory contains **example configuration** which should help you get started +with monitoring the local host and its services. It is included in the +[icinga2.conf](04-configuration.md#icinga2-conf) configuration file by default. + +It can be used as reference example for your own configuration strategy. +Just keep in mind to include the main directories in the +[icinga2.conf](04-configuration.md#icinga2-conf) file. + +> **Note** +> +> You can remove the include directive in [icinga2.conf](04-configuration.md#icinga2-conf) +> if you prefer your own way of deploying Icinga 2 configuration. + +Further details on configuration best practice and how to build your +own strategy is described in [this chapter](04-configuration.md#configuration-best-practice). + +Available configuration files which are installed by default: + +* [hosts.conf](04-configuration.md#hosts-conf) +* [services.conf](04-configuration.md#services-conf) +* [users.conf](04-configuration.md#users-conf) +* [notifications.conf](04-configuration.md#notifications-conf) +* [commands.conf](04-configuration.md#commands-conf) +* [groups.conf](04-configuration.md#groups-conf) +* [templates.conf](04-configuration.md#templates-conf) +* [downtimes.conf](04-configuration.md#downtimes-conf) +* [timeperiods.conf](04-configuration.md#timeperiods-conf) +* [api-users.conf](04-configuration.md#api-users-conf) +* [app.conf](04-configuration.md#app-conf) + +#### hosts.conf <a id="hosts-conf"></a> + +The `hosts.conf` file contains an example host based on your +`NodeName` setting in [constants.conf](04-configuration.md#constants-conf). You +can use global constants for your object names instead of string +values. + +The `import` keyword is used to import the `generic-host` template which +takes care of setting up the host check command to `hostalive`. If you +require a different check command, you can override it in the object definition. + +The `vars` attribute can be used to define custom variables which are available +for check and notification commands. Most of the [Plugin Check Commands](10-icinga-template-library.md#icinga-template-library) +in the Icinga Template Library require an `address` attribute. + +The custom variable `os` is evaluated by the `linux-servers` group in +[groups.conf](04-configuration.md#groups-conf) making the local host a member. + +The example host will show you how to: + +* define http vhost attributes for the `http` service apply rule defined +in [services.conf](04-configuration.md#services-conf). +* define disks (all, specific `/`) and their attributes for the `disk` +service apply rule defined in [services.conf](04-configuration.md#services-conf). +* define notification types (`mail`) and set the groups attribute. This +will be used by notification apply rules in [notifications.conf](04-configuration.md#notifications-conf). + +If you've installed [Icinga Web 2](https://icinga.com/docs/icinga-web-2/latest/doc/02-Installation/), you can +uncomment the http vhost attributes and reload Icinga 2. The apply +rules in [services.conf](04-configuration.md#services-conf) will automatically +generate a new service checking the `/icingaweb2` URI using the `http` +check. + +``` +/* +* Host definitions with object attributes +* used for apply rules for Service, Notification, +* Dependency and ScheduledDowntime objects. +* +* Tip: Use `icinga2 object list --type Host` to +* list all host objects after running +* configuration validation (`icinga2 daemon -C`). +*/ + +/* + * This is an example host based on your + * local host's FQDN. Specify the NodeName + * constant in `constants.conf` or use your + * own description, e.g. "db-host-1". + */ + +object Host NodeName { + /* Import the default host template defined in `templates.conf`. */ + import "generic-host" + + /* Specify the address attributes for checks e.g. `ssh` or `http`. */ + address = "127.0.0.1" + address6 = "::1" + + /* Set custom variable `os` for hostgroup assignment in `groups.conf`. */ + vars.os = "Linux" + + /* Define http vhost attributes for service apply rules in `services.conf`. */ + vars.http_vhosts["http"] = { + http_uri = "/" + } + /* Uncomment if you've sucessfully installed Icinga Web 2. */ + //vars.http_vhosts["Icinga Web 2"] = { + // http_uri = "/icingaweb2" + //} + + /* Define disks and attributes for service apply rules in `services.conf`. */ + vars.disks["disk"] = { + /* No parameters. */ + } + vars.disks["disk /"] = { + disk_partitions = "/" + } + + /* Define notification mail attributes for notification apply rules in `notifications.conf`. */ + vars.notification["mail"] = { + /* The UserGroup `icingaadmins` is defined in `users.conf`. */ + groups = [ "icingaadmins" ] + } +} +``` + +This is only the host object definition. Now we'll need to make sure that this +host and your additional hosts are getting [services](04-configuration.md#services-conf) applied. + +> **Tip** +> +> If you don't understand all the attributes and how to use [apply rules](17-language-reference.md#apply), +> don't worry -- the [monitoring basics](03-monitoring-basics.md#monitoring-basics) chapter will explain +> that in detail. + +#### services.conf <a id="services-conf"></a> + +These service [apply rules](17-language-reference.md#apply) will show you how to monitor +the local host, but also allow you to re-use or modify them for +your own requirements. + +You should define all your service apply rules in `services.conf` +or any other central location keeping them organized. + +By default, the local host will be monitored by the following services + +Service(s) | Applied on host(s) +--------------------------------------------|------------------------ +`load`, `procs`, `swap`, `users`, `icinga` | The `NodeName` host only. +`ping4`, `ping6` | All hosts with `address` resp. `address6` attribute. +`ssh` | All hosts with `address` and `vars.os` set to `Linux` +`http`, optional: `Icinga Web 2` | All hosts with custom variable `http_vhosts` defined as dictionary. +`disk`, `disk /` | All hosts with custom variable `disks` defined as dictionary. + +The Debian packages also include an additional `apt` service check applied to the local host. + +The command object `icinga` for the embedded health check is provided by the +[Icinga Template Library (ITL)](10-icinga-template-library.md#icinga-template-library) while `http_ip`, `ssh`, `load`, `processes`, +`users` and `disk` are all provided by the [Plugin Check Commands](10-icinga-template-library.md#icinga-template-library) +which we enabled earlier by including the `itl` and `plugins` configuration file. + + +Example `load` service apply rule: + +``` +apply Service "load" { +import "generic-service" + +check_command = "load" + +/* Used by the ScheduledDowntime apply rule in `downtimes.conf`. */ +vars.backup_downtime = "02:00-03:00" + +assign where host.name == NodeName +} +``` + +The `apply` keyword can be used to create new objects which are associated with +another group of objects. You can `import` existing templates, define (custom) +attributes. + +The custom variable `backup_downtime` is defined to a specific timerange string. +This variable value will be used for applying a `ScheduledDowntime` object to +these services in [downtimes.conf](04-configuration.md#downtimes-conf). + +In this example the `assign where` condition is a boolean expression which is +evaluated for all objects of type `Host` and a new service with name "load" +is created for each matching host. [Expression operators](17-language-reference.md#expression-operators) +may be used in `assign where` conditions. + +Multiple `assign where` conditions can be combined with `AND` using the `&&` operator +as shown in the `ssh` example: + +``` +apply Service "ssh" { + import "generic-service" + + check_command = "ssh" + + assign where host.address && host.vars.os == "Linux" +} +``` + +In this example, the service `ssh` is applied to all hosts having the `address` +attribute defined `AND` having the custom variable `os` set to the string +`Linux`. +You can modify this condition to match multiple expressions by combining `AND` +and `OR` using `&&` and `||` [operators](17-language-reference.md#expression-operators), for example +`assign where host.address && (vars.os == "Linux" || vars.os == "Windows")`. + + +A more advanced example is shown by the `http` and `disk` service apply +rules. While one `apply` rule for `ssh` will only create a service for matching +hosts, you can go one step further: Generate apply rules based on array items +or dictionary key-value pairs. + +The idea is simple: Your host in [hosts.conf](04-configuration.md#hosts-conf) defines the +`disks` dictionary as custom variable in `vars`. + +Remember the example from [hosts.conf](04-configuration.md#hosts-conf): + +``` +... + /* Define disks and attributes for service apply rules in `services.conf`. */ + vars.disks["disk"] = { + /* No parameters. */ + } + vars.disks["disk /"] = { + disk_partition = "/" + } +... +``` + +This dictionary contains multiple service names we want to monitor. `disk` +should just check all available disks, while `disk /` will pass an additional +parameter `disk_partition` to the check command. + +You'll recognize that the naming is important -- that's the very same name +as it is passed from a service to a check command argument. Read about services +and passing check commands in [this chapter](03-monitoring-basics.md#command-passing-parameters). + +Using `apply Service for` omits the service name, it will take the key stored in +the `disk` variable in `key => config` as new service object name. + +The `for` keyword expects a loop definition, for example `key => value in dictionary` +as known from Perl and other scripting languages. + +Once defined like this, the `apply` rule defined below will do the following: + +* only match hosts with `host.vars.disks` defined through the `assign where` condition +* loop through all entries in the `host.vars.disks` dictionary. That's `disk` and `disk /` as keys. +* call `apply` on each, and set the service object name from the provided key +* inside apply, the `generic-service` template is imported +* defining the [disk](10-icinga-template-library.md#plugin-check-command-disk) check command requiring command arguments like `disk_partition` +* adding the `config` dictionary items to `vars`. Simply said, there's now `vars.disk_partition` defined for the +generated service + +Configuration example: + +``` +apply Service for (disk => config in host.vars.disks) { + import "generic-service" + + check_command = "disk" + + vars += config +} +``` + +A similar example is used for the `http` services. That way you can make your +host the information provider for all apply rules. Define them once, and only +manage your hosts. + +Look into [notifications.conf](04-configuration.md#notifications-conf) how this technique is used +for applying notifications to hosts and services using their type and user +attributes. + +Don't forget to install the check plugins required by the hosts and services and their check commands. + +Further details on the monitoring configuration can be found in the +[monitoring basics](03-monitoring-basics.md#monitoring-basics) chapter. + +#### users.conf <a id="users-conf"></a> + +Defines the `icingaadmin` User and the `icingaadmins` UserGroup. The latter is used in +[hosts.conf](04-configuration.md#hosts-conf) for defining a custom host attribute later used in +[notifications.conf](04-configuration.md#notifications-conf) for notification apply rules. + +``` +object User "icingaadmin" { + import "generic-user" + + display_name = "Icinga 2 Admin" + groups = [ "icingaadmins" ] + + email = "icinga@localhost" +} + +object UserGroup "icingaadmins" { + display_name = "Icinga 2 Admin Group" +} +``` + +#### notifications.conf <a id="notifications-conf"></a> + +Notifications for check alerts are an integral part or your +Icinga 2 monitoring stack. + +The examples in this file define two notification apply rules for hosts and services. +Both `apply` rules match on the same condition: They are only applied if the +nested dictionary attribute `notification.mail` is set. + +Please note that the `to` keyword is important in [notification apply rules](03-monitoring-basics.md#using-apply-notifications) +defining whether these notifications are applies to hosts or services. +The `import` keyword imports the specific mail templates defined in [templates.conf](04-configuration.md#templates-conf). + +The `interval` attribute is not explicitly set -- it [defaults to 30 minutes](09-object-types.md#objecttype-notification). + +By setting the `user_groups` to the value provided by the +respective [host.vars.notification.mail](04-configuration.md#hosts-conf) attribute we'll +implicitely use the `icingaadmins` UserGroup defined in [users.conf](04-configuration.md#users-conf). + +``` +apply Notification "mail-icingaadmin" to Host { + import "mail-host-notification" + + user_groups = host.vars.notification.mail.groups + users = host.vars.notification.mail.users + + assign where host.vars.notification.mail +} + +apply Notification "mail-icingaadmin" to Service { + import "mail-service-notification" + + user_groups = host.vars.notification.mail.groups + users = host.vars.notification.mail.users + + assign where host.vars.notification.mail +} +``` + +More details on defining notifications and their additional attributes such as +filters can be read in [this chapter](03-monitoring-basics.md#alert-notifications). + +#### commands.conf <a id="commands-conf"></a> + +This is the place where your own command configuration can be defined. By default +only the notification commands used by the notification templates defined in [templates.conf](04-configuration.md#templates-conf). + +You can freely customize these notification commands, and adapt them for your needs. +Read more on that topic [here](03-monitoring-basics.md#notification-commands). + +#### groups.conf <a id="groups-conf"></a> + +The example host defined in [hosts.conf](hosts-conf) already has the +custom variable `os` set to `Linux` and is therefore automatically +a member of the host group `linux-servers`. + +This is done by using the [group assign](17-language-reference.md#group-assign) expressions similar +to previously seen [apply rules](03-monitoring-basics.md#using-apply). + +``` +object HostGroup "linux-servers" { + display_name = "Linux Servers" + + assign where host.vars.os == "Linux" +} + +object HostGroup "windows-servers" { + display_name = "Windows Servers" + + assign where host.vars.os == "Windows" +} +``` + +Service groups can be grouped together by similar pattern matches. +The [match function](18-library-reference.md#global-functions-match) expects a wildcard match string +and the attribute string to match with. + +``` +object ServiceGroup "ping" { + display_name = "Ping Checks" + + assign where match("ping*", service.name) +} + +object ServiceGroup "http" { + display_name = "HTTP Checks" + + assign where match("http*", service.check_command) +} + +object ServiceGroup "disk" { + display_name = "Disk Checks" + + assign where match("disk*", service.check_command) +} +``` + +#### templates.conf <a id="templates-conf"></a> + +Most of the example configuration objects use generic global templates by +default: + +``` +template Host "generic-host" { + max_check_attempts = 5 + check_interval = 1m + retry_interval = 30s + + check_command = "hostalive" +} + +template Service "generic-service" { + max_check_attempts = 3 + check_interval = 1m + retry_interval = 30s +} +``` + +The `hostalive` check command is part of the +[Plugin Check Commands](10-icinga-template-library.md#icinga-template-library). + +``` +template Notification "mail-host-notification" { + command = "mail-host-notification" + + states = [ Up, Down ] + types = [ Problem, Acknowledgement, Recovery, Custom, + FlappingStart, FlappingEnd, + DowntimeStart, DowntimeEnd, DowntimeRemoved ] + + period = "24x7" +} + +template Notification "mail-service-notification" { + command = "mail-service-notification" + + states = [ OK, Warning, Critical, Unknown ] + types = [ Problem, Acknowledgement, Recovery, Custom, + FlappingStart, FlappingEnd, + DowntimeStart, DowntimeEnd, DowntimeRemoved ] + + period = "24x7" +} +``` + +More details on `Notification` object attributes can be found [here](09-object-types.md#objecttype-notification). + + +#### downtimes.conf <a id="downtimes-conf"></a> + +The `load` service apply rule defined in [services.conf](04-configuration.md#services-conf) defines +the `backup_downtime` custom variable. + +The ScheduledDowntime apply rule uses this attribute to define the default value +for the time ranges required for recurring downtime slots. + +Learn more about downtimes in [this chapter](08-advanced-topics.md#downtimes). + +``` +apply ScheduledDowntime "backup-downtime" to Service { + author = "icingaadmin" + comment = "Scheduled downtime for backup" + + ranges = { + monday = service.vars.backup_downtime + tuesday = service.vars.backup_downtime + wednesday = service.vars.backup_downtime + thursday = service.vars.backup_downtime + friday = service.vars.backup_downtime + saturday = service.vars.backup_downtime + sunday = service.vars.backup_downtime + } + + assign where service.vars.backup_downtime != "" +} +``` + +#### timeperiods.conf <a id="timeperiods-conf"></a> + +This file contains the default timeperiod definitions for `24x7`, `9to5` +and `never`. TimePeriod objects are referenced by `*period` +objects such as hosts, services or notifications. + + +#### api-users.conf <a id="api-users-conf"></a> + +Provides the default [ApiUser](09-object-types.md#objecttype-apiuser) object +named "root" for the [API authentication](12-icinga2-api.md#icinga2-api-authentication). + +#### app.conf <a id="app-conf"></a> + +Provides the default [IcingaApplication](09-object-types.md#objecttype-icingaapplication) +object named "app" for additional settings such as disabling notifications +globally, etc. |