[Release] Checkmk stable release 2.0.0

Dear friends of Checkmk,

the new stable release 2.0.0 of Checkmk is ready for download.

We are proud to bring you the biggest Checkmk release yet, with major
improvements to future-proof your IT monitoring.

Among the new features are a completely redesigned user interface with powerful
visualization options, a REST-API, network flow monitoring, improved cloud and
container monitoring, a new Check-API, plenty of new check plug-ins and many
more things. We also did major changes under the hood including migrating 500k+
lines of Python code to Python 3.

Take a look at our latest version page to learn more about Checkmk 2.0:

In the next months, we will be producing educational content in the form of
user manual articles, blogs, videos, and community events to help you adapt to
the changes in version 2.0. We will be announcing them on our monthly
newsletter, our social channels (Checkmk | LinkedIn and
http://twitter.com/checkmk), and in the Checkmk Forum
(http://forum.checkmk.com/). Stay tuned!

This stable release ships with 13 changes affecing all editions of Checkmk, 2
Enterprise Edition specific changes and 0 Managed Services Edition specific

This release will be in active maintenance until 2022-08-31. The passive
maintenance will be until 2024-02-22. For details take a look at the Checkmk
versions chapter of the Checkmk handbook.

Changes in all Checkmk Editions:

Checks & agents:

  • 11855 FIX: The updating of the Windows agent no longer causes the disappearing of directories in the ProgramData
  • 12237 FIX: Network interface and switch port discovery parameters
  • 11952 FIX: cmciii: door sensor always returns CRIT status

Core & setup:

  • 12350 API: addition of get single downtime endpoint
  • 12348 FIX: API: adjusting code example for service endpoint
  • 12349 FIX: API: adjusting downtime doc examples and fixing downtime objects links
  • 12347 FIX: API: adjustment of code example for user endpoint
  • 12346 FIX: API: modifying the host and folder update endpoints
    NOTE: Please refer to the migration notes!


  • 12283 FIX: Service discovery page: Do not fail in case of unknown manual check rules

User interface:

  • 12286 FIX: Fix GUI connection issues in distributed setups
  • 12225 FIX: Add service discovery rules to parameters of services page
  • 12221 FIX: Fix exporting of rules for API
  • 12223 FIX: Fix text wrap of wato error messages

Changes in the Checkmk Enterprise Edition:

Dynamic host configuration:

  • 12224 FIX: Dynamic configuration: Fix placement of “Execution has been triggered” message
  • 12222 FIX: Dynamic configuration: Fix example connector configuration
    NOTE: Please refer to the migration notes!

Changes in the Checkmk Managed Services Edition:

You can download Checkmk from our download page:

Please mail bug reports and qualified feedback to feedback@checkmk.com.
We greatly thank you for using Checkmk and wish you a successful monitoring,

Your Checkmk Team


I cant wait for it :star_struck:

1 Like

And now also live there :slight_smile:


Big congratulations to the entire Checkmk team! :clap:
I’m looking forward to the new features and I think it’s great how the product is developing.
Keep up the good work! :partying_face:

Greetings Norm


Very cool, cmk v2.0.0 is already installed and running on our site!
Congratulations to the team for this great work!

GrĂĽsse Michi


Installed and working, Thanks!!! :muscle:

1 Like

Good morning everyone.
After upgrading i had several problems. Windows-Agents crashes, check_mk: ERROR: Duplicate service description on many servers and so on…
It is a nice release and a step forward but i never had that many erros with a release. Used 1.6.21 before the update.

That would be strange as the normal Windows agent is queried the same way as before.
Can you please create an own thread for the problem as it looks like a litte bit more than one simple answer.

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Where can I find “Classical active and passive Monitoring checks” in 2.0.0 , please ?

You need to search for “Integrate Nagios plugins” or only Nagios

:+1: @andreas-doehler thanks a lot!

It’s here now:

Setup > Services > Other services > Integrate Nagios plugins

Now I am searching for “Fake check results” after doing a Service Search, can’t find it anymore.

In 1.6.0 this was reachable like this:

 Service Search
     Hammer Icon
        Fake check results

Take a look at the roles. Fake check result is deactivated in all roles with default settings.

:+1: @andreas-doehler you are right, I thank you again !

Do these changes also apply to the Raw version?

What are the changes between version 1.6 and 2.0 Raw?

Hi Gustavo,

Most of the changes apply to the Raw edition as well. For an overview of what’s new, you can check this page. There’s a note there whenever a feature is only for the Enterprise edition.

1 Like

Thank you @fayepal :slight_smile:

1 Like

I am looking for the equivalent of WATO > Event Console > Rule packs. In Checkmk 2.0 I can only find Settings > Events > Notifications.

You have to click “show more” in the top right of the menu in order to see Event Console.

1 Like