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Icinga2 связка master + agent

Мастер

Запускаем icinga2 node wizard и делаем настройки для мастера. Если вы собираетесь опрашивать локальные или удаленные узлы и другим способом не отключайте conf.d .

Базовый конфиг zones.conf будет выглядеть примерно так.

object Endpoint "master-node" {
}

object Zone "master" {
        endpoints = [ "master-node" ]
}

object Zone "global-templates" {
        global = true
}

object Zone "director-global" {
        global = true
}

Настройки узлов, шаблонов и тп.

По умолчанию icinga предлагает использовать каталог zones.d для настроек агентов.

templates.conf

template Host "icinga-agent" {
  import "generic-host"
  vars.agent_type = "icinga"
  vars.os = "Linux" 
  vars.agent_endpoint = name
}

services.conf

apply Service for (disk_icinga_agent => config in host.vars.disks) {
  import "generic-service"

    check_command = "disk"
  vars.disk_local = true

    command_endpoint = host.vars.agent_endpoint
  vars += config

  assign where host.vars.agent_type == "icinga" &&  host.vars.agent_endpoint
}

apply Service "mem_icinga_agent" {
  import "generic-service"

  vars.mem_warning = 10
  vars.mem_critical = 5
  vars.mem_available = true
  check_command = "mem"

  command_endpoint = host.vars.agent_endpoint
  assign where host.vars.agent_type == "icinga" &&  host.vars.agent_endpoint
}

apply Service "load_icinga_agent" {
  import "generic-service"

  command_endpoint = host.vars.agent_endpoint
  assign where host.vars.agent_type == "icinga" &&  host.vars.agent_endpoint
}

Добавляем агента

В данном примере агент с имененм client

icinga2 pki ticket --cn 'client'

Сохраняем полученный код, он понадобиться для агента.
Далее обазятально добавляем в конфиг zones.conf информацию об агентах, иначе другие конфиги работать не будут.

object Endpoint "client" {
}

object Zone "agents" {
        parent = "master"
        endpoints = [ "client" ]
}

И настраиваем самого агента в zones.d/hosts.con

object Host "client" {
  import "icinga-agent"

  vars.disks["disk"] = {
//    disk_partitions = ["/", "/home"]
  }
  vars.load_cload1 = 20
  vars.load_wload1 = 18
  vars.load_cload5 = 20
  vars.load_wload5 = 18
  vars.load_cload15 = 20
  vars.load_wload15 = 18
  address = "192.168.0.4"
}

Агент

Запускаем ту же команду что на мастере icinga2 node wizard, только делаем настройки для агента, в конце можно отключить conf.d.

Welcome to the Icinga 2 Setup Wizard!

We will guide you through all required configuration details.

Please specify if this is an agent/satellite setup ('n' installs a master setup) [Y/n]: 

Starting the Agent/Satellite setup routine...

Please specify the common name (CN) [db]: db

Please specify the parent endpoint(s) (master or satellite) where this node should connect to:
Master/Satellite Common Name (CN from your master/satellite node): master-node

Do you want to establish a connection to the parent node from this node? [Y/n]: 
Please specify the master/satellite connection information:
Master/Satellite endpoint host (IP address or FQDN): 192.168.0.1
Master/Satellite endpoint port [5665]: 

Add more master/satellite endpoints? [y/N]: 
Parent certificate information:

 Version:             3
 Subject:             CN = master-node
 Issuer:              CN = Icinga CA
 Valid From:          Nov  2 19:23:22 2023 GMT
 Valid Until:         Dec  3 19:23:22 2024 GMT
 Serial:              5b:b8:1a:90:04:af:91:fa:55:2b:f3:6c:ce:84:e6:98:6c:64:eb:a9

 Signature Algorithm: sha256WithRSAEncryption
 Subject Alt Names:   master-node
 Fingerprint:         AD 40 90 BC D8 1C 54 A9 23 1B F5 FD 75 E7 67 AE 43 51 B4 4C 00 2B 1D 25 1C BB 89 C3 2F 0E B4 6D 

Is this information correct? [y/N]: y

Please specify the request ticket generated on your Icinga 2 master (optional).
 (Hint: # icinga2 pki ticket --cn 'db'): 6dbe06a952eb6a9026eb7b508e2a93dfaf7f210f
Please specify the API bind host/port (optional):
Bind Host []: 
Bind Port []: 

Accept config from parent node? [y/N]: y
Accept commands from parent node? [y/N]: y

Reconfiguring Icinga...
Disabling feature notification. Make sure to restart Icinga 2 for these changes to take effect.
Enabling feature api. Make sure to restart Icinga 2 for these changes to take effect.

Local zone name [client]: 
Parent zone name [master]: 

Default global zones: global-templates director-global
Do you want to specify additional global zones? [y/N]: n

Do you want to disable the inclusion of the conf.d directory [Y/n]: 
Disabling the inclusion of the conf.d directory...

Done.

Now restart your Icinga 2 daemon to finish the installation!

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@kiranananda