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Check_MK importer can import, historize and process monitoring data from Check_MK.


You can find the configuration option in at Environment settings > OneImporter > Configurations > Check_MK.

Here you can edit all existing configurations, create new configurations or delete existing configurations. To add a new configuration enter a Name for your importer and an Entity suffix (default: -check-mk) to clearly identify your Check_MK entities.
Note that the Entity suffix is fixed and cannot be changed afterwards.

Click Add to proceed to the configuration.

To edit an existing configurations click the arrow on the left of your importer name to expand the configuration options.

Following configuration options are available:

Field Description Advice
Name Meaningful name Add the word "Check_MK" to identify importer when viewing the logs
Active Option to activate and deactivate the configuration. Data is only imported if the configuration is activated.
Server URL Check_MK server URL to get data from
Version Select relevant Check_MK version
Username User name for Check_MK access
Secret Password for Check_MK access See paragraph below for secret generation in Check_MK
Entities Select all required entities
Executing OneImporter Select a OneImporter to import the data based on the importer configuration. Requires installed OneImporter: Installation instruction
Schedule time (cron format) Determine the frequency of imports in CRON format Learn more about CRON format:

Table: Check_MK configuration parameters


The following image is an example of a Check_MK configuration: Check_MK importer configuration Figure: Example of a Check_MK configuration

Install hardware & software inventory plugin

We strongly recommend activating the Hardware & Software Inventory Plugin in Check_MK. This will allow you to collect significantly more data about your infrastructure. Proceed as follows:

  1. Download plugin in Check_MK server user interface
  2. Save file at <host>/../usr/lib/check_mk_agent/plugins/ for each Check_MK agent.

Agent plugin overview in Check_MK

Figure: Agent plugin overview in Check_MK

See Check_MK manual for more information:

Secret generation

A user with an automation secret (similar to a token) for the Hetzner Cloud integration is required to access the Check_MK API.

Check_MK offers the concept of the automation user. These users are intended exclusively for remote control and do not permit normal GUI logins. Authorisation is achieved using specific variables in the URL.

An automation user is created like a normal user, but receives an automation secret instead of a password. This can be defined manually or can be generated automatically with the randomising die.

Configure a Check_MK automation user with a secret token for integration

Just like a normal user, an automation user has a role and can also be a contact. With these you can thus restrict its permissions and visibility of hosts and services as required.

When opening websites automatically, you enter the following additional variables in the URL:

  • _username the automation user's ID
  • _secret the user's Automation secret


The OneImporter imports Check_MK data based on a specific configuration into entities with a suffix defined by you (default: -check-mk). To view the imported instances in, select 'Asset & Configuration Repository → Instance Viewer'. There you can select your specific instance and click it for a detailed view in the instance history viewer.

The following image is an example of imported Check_MK data: Check_MK instance overview
Figure: Overview of Check_MK instance (left) and topology of related instances (right)