- Overview
- Module Description - What the module does and why it is useful
- Setup - The basics of getting started with icinga2
- Usage - Configuration options and additional functionality
- How Configuration is parsed
- Reference
- Release Notes
Icinga 2 is a widely used open source monitoring software. This Puppet module helps with installing and managing configuration of Icinga 2 on multiple operating systems.
New version 4.0.0 means we have a breaking change. However, this change only affects the export parameter in the individual object defined resources introduced in v3.6.0. We replaced the icinga2::object exported resources with the type of icinga2::config::fragment to do the config rendering thru runs on the single Icinga agent to get an static configuration on the destination, generally the Icinga config server.
If you are using the export parameter in connection with the class icinga2::query_objects, it is recommended to suspend the puppet runs on the icinga servers and satellites (or everwhere you declare icinga2::query_objects) after updating this module until all agents have been processed by Puppet at least once.
Also, the anchors have been replaced by contains, this may cause problems if you set dependency to the icinga2 class.
Each Icinga object has been given the new parameter export that specifies one (ordinary objects for the config server) or more nodes (e.g. zones and endpoints for HA servers from workers aka satellites) as targets where the objects are then created using the class query_objects. This has been implemented to avoid collecting export resources in large environments.
This module installs and configures Icinga 2 on your Linux or Windows hosts.
By default it uses packages provided by your distribution's repository or Chocolatey on Windows.
The module can also be configured to use packages.icinga.com as the primary repository, which enables you to install Icinga 2 versions that are newer than the ones provided by your distribution's vendor. All features and objects available in Icinga 2 can be enabled and configured with this module.
- Installation of packages
- Configuration of features
- Configuration of objects (also apply rules)
- Service
- MySQL / PostgreSQL Database Schema Import
- Repository Management
- Certification Authority
This module supports:
- [puppet] >= 7.0.0 < 9.0.0
And depends on:
- puppetlabs/stdlib >= 6.6.0 < 10.0.0
- puppetlabs/concat >= 6.4.0 < 10.0.0
- [icinga/icinga] >= 1.0.0 < 6.0.0
- needed if
manage_reposis set totrue
- needed if
- puppetlabs/chocolatey >= 5.2.0 < 9.0.0
- needed if agent os is windows and if
manage_packagesis set totrue
- needed if agent os is windows and if
The use of Icinga's own CA is recommended. If you still want to use the Puppet certificates, please note that Puppet 7 uses an intermediate CA by default and Icinga cannot handle its CA certificate, see Icinga Issue.
This module has been tested on:
- Debian 10, 11, 12
- Ubuntu 20.04, 22.04
- CentOS/RHEL 7, 8, 9
- AlmaLinux/Rocky 8, 9
- Fedora 32
- Windows Server 2019
Other operating systems or versions may work but have not been tested.
The default class icinga2 installs and configures a basic installation of Icinga 2. The features checker, mainlog
and notification are enabled by default.
By default, your distribution's packages are used to install Icinga 2. On Windows systems we use the Chocolatey package manager.
Use the manage_repos parameter to configure repositories by default the official and stable packages.icinga.com. To configure your own
repositories, or use the official testing or nightly snapshot stage, see https://github.com/icinga/puppet-icinga.
class { 'icinga2':
manage_repos => true,
}If you want to manage the version of Icinga 2, you have to disable the package management of this module and handle
packages in your own Puppet code. The attribute manage_repos is disabled by default and you have to manage
a repository within icinga in front of the package resource. You can combine this one with the section before about repositories.
# class of extra module icinga/icinga
include ::icinga::repos
package { 'icinga2':
ensure => latest,
notify => Class['icinga2'],
}
class { 'icinga2':
manage_packages => false,
}Note: Be careful with this option: Setting manage_packages to false means that this module will not install any package at
all, including IDO packages!
Icinga 2 can run in three different roles:
- in a master zone which is on top of the hierarchy
- in a satellite zone which is a child of a satellite or master zone
- a standalone client node/zone which works as an agent connected to master and/or satellite zones
To learn more about Icinga 2 Clustering, follow the official docs on distributed monitoring. The following examples show how these roles can be configured using this Puppet module.
A Master zone has no parent and is usually also the place where you enable the IDO and notification features. A master sends configurations over the Icinga 2 protocol to satellites and/or clients.
More detailed examples can be found in the [examples] directory.
This example creates the configuration for a master that has one satellite connected. A global zone is created for templates, and all features of a typical master are enabled.
class { 'icinga2':
confd => false,
constants => {
'ZoneName' => 'master',
'TicketSalt' => '5a3d695b8aef8f18452fc494593056a4',
},
}
class { 'icinga2::feature::api':
pki => 'none',
accept_commands => true,
# when having multiple masters, you have to enable:
accept_config => true,
endpoints => {
'master.example.org' => {},
'satellite.example.org' => {
'host' => '172.16.2.11'
},
},
zones => {
'master' => {
'endpoints' => ['master.example.org'],
},
'dmz' => {
'endpoints' => ['satellite.example.org'],
'parent' => 'master',
},
}
}
# to enable a CA on this instance you have to declare. Only one instance is allowed to be a CA:
include icinga2::pki::ca
icinga2::object::zone { 'global-templates':
global => true,
}A satellite has a parent zone and one or multiple child zones. Satellites are usually created to distribute the monitoring load or to reach delimited zones in the network. A satellite either executes checks itself or delegates them to a client.
The satellite has fewer features enabled, but executes checks similar to a master. It connects to a master zone, and to a satellite or client below in the hierarchy. As parent acts either the master zone, or another satellite zone.
class { 'icinga2':
confd => false,
# setting dedicated feature list to disable notification
features => ['checker','mainlog'],
constants => {
'ZoneName' => 'dmz',
},
}
class { 'icinga2::feature::api':
accept_config => true,
accept_commands => true,
ca_host => '172.16.1.11',
ticket_salt => '5a3d695b8aef8f18452fc494593056a4',
# to increase your security set fingerprint to validate the certificate of ca_host
# fingerprint => 'D8:98:82:1B:14:8A:6A:89:4B:7A:40:32:50:68:01:D8:98:82:1B:14:8A:6A:89:4B:7A:40:32:99:3D:96:72:72',
endpoints => {
'satellite.example.org' => {},
'master.example.org' => {
'host' => '172.16.1.11',
},
},
zones => {
'master' => {
'endpoints' => ['master.example.org'],
},
'dmz' => {
'endpoints' => ['satellite.example.org'],
'parent' => 'master',
},
}
}
icinga2::object::zone { 'global-templates':
global => true,
}Icinga 2 runs as a client usually on each of your servers. It receives config or commands from a satellite or master zones and runs the checks that have to be executed locally.
The client is connected to the satellite, which is the direct parent zone.
class { 'icinga2':
confd => false,
features => ['mainlog'],
}
class { 'icinga2::feature::api':
accept_config => true,
accept_commands => true,
ticket_salt => '5a3d695b8aef8f18452fc494593056a4',
# to increase your security set fingerprint to validate the certificate of ca_host
# fingerprint => 'D8:98:82:1B:14:8A:6A:89:4B:7A:40:32:50:68:01:D8:98:82:1B:14:8A:6A:89:4B:7A:40:32:99:3D:96:72:72',
endpoints => {
'NodeName' => {},
'satellite.example.org' => {
'host' => '172.16.2.11',
},
},
zones => {
'ZoneName' => {
'endpoints' => ['NodeName'],
'parent' => 'dmz',
},
'dmz' => {
'endpoints' => ['satellite.example.org'],
},
}
}
icinga2::object::zone { 'global-templates':
global => true,
}The parameter fingerprint is optional and new since v2.1.0. It's used to validate the certificate of the CA host.
You can get the fingerprint via openssl x509 -noout -fingerprint -sha256 -inform pem -in master.crt on the master host. (Icinga2 versions before 2.12.0 require '-sha1' as digest algorithm.)
With this module you can create almost every object that Icinga 2 knows about. When creating objects some parameters are required. This module sets the same requirements as Icinga 2 does. When creating an object you must set a target for the configuration.
Here are some examples for some object types:
icinga2::object::host { 'srv-web1.fqdn.com':
display_name => 'srv-web1.fqdn.com',
address => '127.0.0.1',
address6 => '::1',
check_command => 'hostalive',
target => '/etc/icinga2/conf.d/srv-web1.fqdn.com.conf',
}icinga2::object::service { 'uptime':
host_name => 'srv-web1.fqdn.com',
display_name => 'Uptime',
check_command => 'check_uptime',
check_interval => '600m',
groups => ['uptime', 'linux'],
target => '/etc/icinga2/conf.d/uptime.conf',
}icinga2::object::hostgroup { 'monitoring-hosts':
display_name => 'Linux Servers',
groups => [ 'linux-servers' ],
target => '/etc/icinga2/conf.d/groups2.conf',
assign => [ 'host.vars.os == linux' ],
}The following example shows how icinga2 objects can be read from a hiera datastore. See also examples/objects_from_hiera.pp.
class { 'icinga2':
manage_repos => true,
}
$defaults = lookup('monitoring::defaults', undef, undef, {})
lookup('monitoring::objects').each |String $object_type, Hash $content| {
$content.each |String $object_name, Hash $object_config| {
ensure_resource(
$object_type,
$object_name,
deep_merge($defaults[$object_type], $object_config))
}
}
The datastore could be like:
---
monitoring::objects:
'icinga2::object::host':
centos7.localdomain:
address: 127.0.0.1
vars:
os: Linux
'icinga2::object::service':
ping4:
check_command: ping4
apply: true
assign:
- host.address
ssh:
check_command: ssh
apply: true
assign:
- host.address && host.vars.os == Linux
monitoring::defaults:
'icinga2::object::host':
import:
- generic-host
target: /etc/icinga2/conf.d/hosts.conf
'icinga2::object::service':
import:
- generic-service
target: /etc/icinga2/conf.d/services.conf
Some objects can be applied to other objects. To create a simple apply rule you
must set the apply parameter to true. If this parameter is set to a string,
this string will be used to build an apply for loop. A service object always
targets a host object. All other objects need to explicitly set an
apply_target
Apply a SSH service to all Linux hosts:
icinga2::object::service { 'SSH':
target => '/etc/icinga2/conf.d/test.conf',
apply => true,
assign => [ 'host.vars.os == Linux' ],
ignore => [ 'host.vars.os == Windows' ],
display_name => 'Test Service',
check_command => 'ssh',
}
Apply notifications to services:
icinga2::object::notification { 'testnotification':
target => '/etc/icinga2/conf.d/test.conf',
apply => true,
apply_target => 'Service',
assign => [ 'host.vars.os == Linux' ],
ignore => [ 'host.vars.os == Windows' ],
user_groups => ['icingaadmins']
}
Assign all Linux hosts to a hostgroup:
icinga2::object::hostgroup { 'monitoring-hosts':
display_name => 'Linux Servers',
groups => [ 'linux-servers' ],
target => '/etc/icinga2/conf.d/groups2.conf',
assign => [ 'host.vars.os == linux' ],
}
A loop to create HTTP services for all vHosts of a host object:
icinga2::object::service { 'HTTP':
target => '/etc/icinga2/conf.d/http.conf',
apply => 'http_vhost => config in host.vars_http_vhost',
assign => [ 'host.vars.os == Linux' ],
display_name => 'HTTP Service',
check_command => 'http',
}
Sometimes it's necessary to cover very special configurations, that you cannot handle with this module. In this case you can use the icinga2::config::file tag on your file resource. The module collects all file resource types with this tag and triggers a reload of Icinga 2 on a file change.
include icinga2
file { '/etc/icinga2/conf.d/for-loop.conf':
ensure => file,
source => '...',
tag => 'icinga2::config::file',
}
To generate a valid Icinga 2 configuration all object attributes are parsed. This simple parsing algorithm takes a decision for each attribute, whether part of the string is to be quoted or not, and how an array or dictionary is to be formatted.
Parsing of a single attribute can be disabled by tagging it with -: at the front of the string.
attr => '-:"unparsed string with quotes"'
An array, a hash or a string can be assigned to an object attribute. True and false are also valid values.
Hashes and arrays are created recursively, and all parts – such as single items of an array, keys and its values are parsed separately as strings.
Strings are parsed in chunks, by splitting the original string into separate substrings at specific keywords (operators)
such as +, -, in, &&, ||, etc.
NOTICE: This splitting only works for keywords that are surrounded by whitespace, e.g.:
attr => 'string1 + string2 - string3'
The algorithm will loop over the parameter and start by splitting it into 'string1' and 'string2 - string3'. 'string1' will be passed to the sub function 'value_types' and then the algorithm will continue parsing the rest of the string ('string2 - string3'), splitting it, passing it to value_types, etc.
Brackets are parsed for expressions:
attr => '3 * (value1 - value2) / 2'
The parser also detects function calls and will parse all parameters separately.
attr => 'function(param1, param2, ...)'
True and false can be used as either booleans or strings.
attrs => true or attr => 'true'
In Icinga you can write your own lambda functions with {{ ... }}. For Puppet use:
attrs => '{{ ... }}'
The parser analyzes which parts of the string have to be quoted and which do not.
As a general rule, all fragments are quoted except for the following:
- Boolean:
true,false - Numbers:
3or2.5 - Time Intervals:
3mor2.5h(s = seconds, m = minutes, h = hours, d = days) - Functions:
{{ ... }}or function(){} - All constants, which are declared in the constants parameter in main class
icinga2NodeName
- Names of attributes that belong to the same type of object:
- e.g.
nameandcheck_commandfor a host object
- e.g.
- All attributes or variables (custom attributes) from the host, service or user contexts:
host.name,service.check_command,user.groups, ...
Assignment with += and -=:
Now it's possible to build an Icinga DSL code snippet like
vars += config
simply use a string with the prefix '+ ', e.g.
vars => '+ config',
The blank between + and the proper string 'config' is imported for the parser because numbers
attr => '+ -14',
are also possible now. For numbers -= can be built, too:
attr => '- -14',
Arrays can also be marked to merge with '+' or reduce by '-' as the first item of the array:
attr => [ '+', item1, item2, ... ]
Result: attr += [ item1, item2, ... ]
attr => [ '-', item1, item2, ... ]
Result: attr -= [ item1, item2, ... ]
That all works for attributes and custom attributes!
Finally dictionaries can be merged when a key '+' is set:
attr => {
'+' => true,
'key1' => 'val1',
}
Result:
attr += {
"key1" = "val1"
}
If 'attr' is a custom attribute this just works since level 3 of the dictionary:
vars => {
'level1' => {
'level2' => {
'level3' => {
'+' => true,
...
},
},
},
},
Parsed to:
vars.level1["level2"] += level3
Now it's also possible to add multiple custom attributes:
vars => [
{
'a' => '1',
'b' => '2',
},
'config',
{
'c' => {
'd' => {
'+' => true,
'e' => '5',
},
},
},
],
And you'll get:
vars.a = "1"
vars.b = "2"
vars += config
vars.c["d"] += {
"e" = "5"
}
Note: Using an Array always means merge '+=' all items to vars.
It's not currently possible to use dictionaries in a string WITH nested array or hash, like
attr1 => 'hash1 + { item1 => value1, item2 => [ value1, value2 ], ... ]'
attr2 => 'hash2 + { item1 => value1, item2 => { ... },... }'
See REFERENCE.md
Due to a long known bug in puppet known as environment bleed, upgrading this module from versions <3.2.0 to a version >=3.2.0 may present some issues. The handling of new datatypes introduced in the 3.2.0 update of this module may result in configuration file contents with the following line:
password = "Sensitive [value redacted]"
This may affect configuration files which are influenced by the following puppet code pieces:
- icinga2::feature::api::ticket_salt
- icinga2::feature::api::ticket_id
- icinga2::feature::elasticsearch::password
- icinga2::feature::icingadb::password
- icinga2::feature::idomysql::password
- icinga2::feature::idopgsql::password
- icinga2::feature::influxdb::password
- icinga2::feature::influxdb::basic_auth['password']
- icinga2::feature::influxdb2::auth_token
- icinga2::object::apiuser::password
This may be fixed by doing the following steps in order:
- Update all environments containing this module to the latest version
- Regenerate all resource types in case you are using environment isolation
- 2.1 Delete old resource types for each environment
rm -rf /etc/puppetlabs/code/environment/xxx/.resource\_types/ - 2.2 Generate new resource types for each environment
puppet generate types --environment xxx
- 2.1 Delete old resource types for each environment
- Restart the puppetserver service
When releasing new versions we refer to [SemVer 1.0.0] for version numbers. [SemVer 1.0.0]: http://semver.org/spec/v1.0.0.html
See also CHANGELOG.md
This plugin was originally authored by Icinga. The maintainer preferred that Vox Pupuli take ownership of the module for future improvement and maintenance. Existing pull requests and issues were transferred over, please fork and continue to contribute here instead of Icinga.
Previously: https://github.com/icinga/puppet-icinga2
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