Modern cities are rapidly adopting smart technologies to deliver realtime data about a number of city services. These technologies heavily rely on a high quality network interconnecting all sensors and reactors as lamps with controlling services. Many low level PLC systems solve the automation, but their purpose is limited to narrow areas of usage as these device have limited computational power. On the other hand, the rise of single-board computers as Raspberry Pi with multi-core processors and plenty of memory can serve as a platform for virtualized services based on Kubernetes. The distributed cluster across whole city on public streetlights gives operators the possibility to adapt to rapidly changing conditions. We propose distribution of HA clusters of single-board devices in key topological points of smart city mesh networks connected together by reliable SDN network. These virtualized services fulfill various tasks as data collection, data processing or and all of these services can rely on cloud backends, that provide much more computational and storage capacity. Services can be operated at both locations to serve local as well as foreign users. We will share whole concept and architecture of SmartCity project, which covers deployment of more than 3000 endpoints[, both sensoric and reactive devices,] and about 30 smart gateways running in HA mode on Kubernetes Nodes. Sched Link: http://sched.co/6BUM