Hello Community! 
We, the whole Checkmk Team, are happy and proud to present Checkmk’s newest version – 2.3!
For this release we:
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Introduced Synthetic Monitoring with Checkmk that allows you to monitor applications;
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Worked on over 100 smaller and bigger changes that improve user experience;
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Re-worked web service and certificate monitoring as well as MS SQL database monitoring;
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provided Checkmk Cloud functionality to Checkmk MSP,
Here is a short summary including related educational materials:
Synthetic monitoring: test like a robot, monitor like a pro
New add-on based on Robotmk and introduced with Checkmk 2.3 allows you to test the functionality of your apps from users’ perspective and monitor from modern web-apps to native Windows applications:
Checkmk Synthetic Monitoring, Checkmk 2.3: Synthetic Monitoring
More powerful out-of-the-box monitoring
Completely redesigned HTTP check makes availability and performance monitoring of web-services a breeze. With it, you can benefit from easy management and configuration, as well as detailed information about the status of your HTTP(S) services.
With the new check you can monitor websites and their certificates in one service. Unlike the previous solution, the new HTTP check can be configured with one rule instead of hundreds, and allows users to monitor any certificates that are provided via TCP port.
New MS SQL monitoring plugin allows you to monitor any databases compatible with MS SQL queries: you can set up auto-detection and monitoring of locally running databases,
in-depth monitoring of remote databases, e.g., Microsoft Azure SQL. The new plugin supports a wide range of special MS SQL setups and custom handling for long-running queries
Kubernetes monitoring now covers most popular K8s distributions: Vanilla, AWS EKS, Google Cloud GKE (also supports GKE clusters on Autopilot), Azure AKS, VMware Tanzu, Red Hat OpenShift (now also in Checkmk Enterprise and Checkmk MSP)
Data Center Monitoring improved due to the support of new infrastructure components and the extended monitoring of Nutanix infrastructure, Redfish-capable management boards and the PureStorage FlashArrays.
Test notifications allow you to simulate events and analyze which notifications would be triggered by the event without affecting the monitoring itself: Checkmk 2.3: Enhanced workflows for a great UX
Better overview of your infrastructure
Topology view is something that many community members might appreciate: Checkmk 2.3 provides different modes of visualizing network connections. You can choose to display all hosts and their relationships, or a combined view of hosts and interfaces, or just hosts and interfaces with problems.
Top list Dashlet – you asked and we delivered. One of the much requested features on our ideas portal – https://ideas.checkmk.com/suggestions/295556/top-10-hosts-dashlet – is now in Checkmk. For example, it is now easy to see at a glance the systems with the highest resource usage in terms of CPU or disk space, which makes it easier to manage large IT environments. It is already a part of the reworked Windows server and Linux server dashboards!
Learn more: Checkmk 2.3: More and better Monitoring
What is next?
Special thank you to you for helping us to test Checkmk 2.3 Beta!
This release is not only an achievement of the Checkmk team but also the whole community, especially all our Beta Testers. Thank you, your contributions were essential for a smooth release!
If you participated in Beta Testing and have not yet filled in our short questionnaire about your experience, please consider doing so: Beta testing survey
Join us for a call about Checkmk Synthetic Monitoring!
Synthetic Monitoring is a major addition to Checkmk, so we wanted to present it to you and answer your questions.
Join us for a call on 30th of April at 3PM Berlin time to learn more:Community Call: Checkmk Synthetic Monitoring