Diamon2- Improved Monitoring of CERN’s Accelerator Controls Infrastructure

Monitoring of heterogeneous systems in large organizations like CERN is always challenging. CERN's accelerators infrastructure includes large number of equipment (servers, consoles, FECs, PLCs), some still running legacy software like LynxOS 4 or Red Hat Enterprise Linux 4 on older hardware with very limited resources. DIAMON2 is based on CERN Common Monitoring platform. Using Java industry standards, notably Spring, Ehcache and the Java Message Service, together with a small footprint C++ -based monitoring agent for real time systems and wide variety of additional data acquisition components (SNMP, JMS, JMX etc.), DIAMON2 targets CERN’s environment, providing easily extensible, dynamically reconfigurable, reliable and scalable monitoring solution. This article explains the evolution of the CERN diagnostics and monitoring environment until DIAMON2, describes the overall system’s architecture, main components and their functionality as well as the first operational experiences with the new system, observed under the very demanding infrastructure of CERN’s accelerator complex.