Gain a complete view of your Linux servers’ health and performance with the top-rated server monitoring platform on G2. Scalable. Automated. Extensible.

Checkmk supports the most common Linux distros (Debian, Ubuntu, Red Hat Enterprise Linux, Fedora, CentOS, openSUSE, SLES, and all other DEB-based distros), as well as Windows, MacOS, BSD, and others.
Minimal footprint
The monitoring agent has very low requirements for CPU, RAM, and hard drive space
Full transparency
Only a shell script is executed in the server, in which you can see all commands
High security
By default, the monitoring agent allows no access from the network whatsoever
Central inventory
Auto-discover and centrally manage hardware and software, keeping track of changes
- Mail servers
Monitor via our generic POP3, IMAP, and SMTP checks. Native plug-ins for MS Exchange, Postfix, Gmail and many other mail applications - Web servers
Get downtime alerts from our active HTTP, FTP and SSL checks. Monitor performance metrics of your Apache and Nginx web servers - Database servers
MySQL/MariaDB, Microsoft SQL, PostgreSQL, Oracle, MongoDB, IBM DB2, IBM Informix, SAP HANA, Microsoft Azure SQL, AWS RDS, and others - Application servers
Almost all Java applications servers, such as JBoss, Oracle WebLogic, Apache Tomcat, IBM WebSphere, and others - FTP servers
Monitor availability, response time, resource utilization, error rates, latency and many more metrics of your FTP server - Other types of servers
Proxy, directory, authentication, backup servers, and others - if you can name it, Checkmk can monitor it
Monitor everything
Monitor your infrastructure out-of- the-box with our leading library of more than 2,000 vendor-maintained monitoring plug-ins
Highly automated
Auto-registration of workloads, auto-discovery of services, and configuration via a modern REST API take manual work off your hands
Reduce MTTR
Combine metrics and log data for fast problem identification and root cause analysis. Assess the health of the systems across multiple graphs at a glance
Scalable
Monitor hundreds of thousands of hosts and millions of services across the globe, thanks to a high-performance distributed architecture
Flexible deployment
Enjoy maximum flexibility in deploying Checkmk on a native Linux server, on a VM, as a container image, or directly from AWS and Azure marketplaces
Easily extensible
Customize and extend the Checkmk to suit your needs. Use the Check-API to write your own monitoring plug-ins or extend existing ones for full visibility
Smart alerts
Configure granular alerts and automate issue escalation, automatically creating tickets in ITSM systems and notifying only to the responsible team
Visualize your IT
Track key metrics for servers, clouds, Kubernetes clusters, and many more monitored objects, on out-of-the-box or customized dashboards
Curious about Checkmk Cloud, Pro, or Ultimate? Head to our pricing page to pick the edition that fits your needs and start your trial. 30-day trial is completely free, allowing you to test the full feature set of our commercial editions without any restrictions.
Checkmk offers several flexible deployment options to fit your specific infrastructure needs:
- Linux Server Installation
The most common deployment method. You can install Checkmk directly on a Linux server, whether physical or virtual. Supported Linux distributions include Red Hat Enterprise Linux (RHEL) based systems, SUSE Linux Enterprise Server (SLES), Debian, and Ubuntu. - Cloud Infrastructure
Host your own Checkmk instance on AWS or Microsoft Azure. For the fastest setup, Checkmk Ultimate is available as pre-configured virtual machine images in the AWS and Azure Marketplaces, allowing you to bypass manual installation steps. - SaaS (Software as a Service)
Enjoy hassle-free setup and maintenance-free experience with Checkmk Cloud. Learn more about our SaaS platform. - Docker Containers
Checkmk can be deployed as a Docker container using official images for both Community and commercial editions. The lightweight, self-contained container environment allows for easy deployment and portability. View Docker documentation. - Virtual Appliance
A ready-to-use solution for hypervisors like VMware ESXi, Hyper-V, Proxmox, or VirtualBox. The appliance includes a hardened Debian-based OS and a dedicated web interface for easy, command-free configuration and management. Check virtual appliance details. - Physical Appliance
For a turnkey hardware solution, Checkmk offers physical appliances with pre-installed and optimized software, ready for deployment in data centers. These appliances support high-availability clustering and come in various models with different maintenance levels to ensure 24/7 monitoring uptime. See available devices.
No, you do not have to install Checkmk to get hands-on.
Checkmk provides a sandbox instance that lets you get familiar with the Checkmk GUI, explore core Checkmk functionalities, and view prebuilt dashboards — all without deploying a single package locally. This is an easy way to evaluate the look, feel, and capabilities of Checkmk before deciding on a deployment option.
Ready for a test-drive? Play with Checkmk.
Once the 30-day trial of a self-hosted Checkmk edition ends, you can either license your site with a paid subscription or continue using it for free as long as you want. The free version allows up to 750 monitored services on a single site and does not support distributed monitoring.
For Checkmk Cloud (SaaS), you must activate a paid subscription before the 30-day trial period ends to keep your monitoring active. Otherwise, your trial instance and its configuration will be automatically deleted
You can purchase a Checkmk license online or by requesting a quote from our sales team. Once you have your subscription, you simply enter your license credentials directly into your existing trial site.
The Checkmk server is not supported on Windows. However, you can monitor Windows hosts using the Checkmk agent.
For the server itself, we suggest starting a Checkmk Cloud trial — our SaaS edition that runs entirely on our cloud infrastructure.
The easiest way to get started with a PoC is to start a trial, create a new site, and use the 30-day trial period. If you need more than 30 days to build your PoC, please contact our sales team, and we will be happy to issue an extended PoC license.
By using one of the self-hosted Checkmk editions you are in control of your monitoring data, which never leaves your infrastructure. The data for processing your account and subscription is securely stored and processed exclusively within the European Union. In the case of the Checkmk Cloud edition (SaaS), you can choose where to keep all your data between the US (Virginia) and the EU (Frankfurt). In the latter case, your sensitive information never leaves EU borders.
Yes, Checkmk ensures full compliance with GDPR and other stringent EU regulations. Our robust security measures and transparent data processing practices are designed to safeguard your data and provide full confidence. You can read more on how we process data on the Privacy Policy page.
Download the free trial and see it in action.