City of Munich: Open source monitoring with OMD

As part of a process to restructure its IT, one of Germany’s largest municipal employers opted to upgrade its previous monitoring system based on Icinga and check_mk with its established structures and thereby adapt to new requirements in terms of quality, operation, scalability, and automation. The renowned monitoring team at ConSol stood out during the tender procedure on account of its expertise gained from similar-sized projects and its role as a technological pioneer. The new monitoring solution features a minimum capacity of 5,000 hosts and enables distributed monitoring across multiple locations as well as monitoring of systems in isolated security zones. Further requirements included connection to an existing reporting system, processing of events (traps), and scalability without conceptual changes right through to a volume of several tens of thousands of hosts. The client also wanted to integrate available check scripts into the new solution.

Based on the documented requirements, ConSol designed a pure open-source monitoring landscape for the central IT of the municipal client. The central component of the new infrastructure is OMD (Open Monitoring Distribution), an ‘out-of-the-box’ package that bundles the Nagios, Shinken, and Icinga cores, as well as the most common add-ons. A supplementary package with ConSol plug-ins from the extensive open-source pool of ConSol developers, customizations to the corporate design of the client, and monitoring mechanisms for SAP, Oracle, and Microsoft SQL, for example, were created for this installation as a result of the positive experiences with other monitoring customers.

The new monitoring system was very well received in the specialist departments right from the start thanks to the options to customize the Thruk web GUI to their individual needs. ConSol is responsible for technically implementing monitoring during the entire four-year term as a sub-section of a comprehensive municipal service management project and has successfully worked together with the responsible specialist departments.


  • Pure open-source environment: no software acquisition and licensing costs
  • Monitoring infrastructure based on standardized packages
  • A high degree of standardization of the monitoring mechanisms
  • Creation of a scalable solution
  • Possible to incorporate new systems, even without monitoring expertise
  • Central visualization
  • Entire project from a single source

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