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Kubernetes uses Docker containers. A container is a “lightweight” abstraction layer on top of the host operating system. Multiple containers share the machine’s operating system kernel and do not require the overhead of associating an operating system within each application. In comparison with VMs, containers bring reduced start-up time, more compute capacity, more flexibility, fault isolation, ease of management, simplified security and reduced costs. The operational benefits for Delft-FEWS systems are also in line with the Roadmap plans for automation of installations with less needless customization, better auto-scaling and more flexible testing. We prefer using linux containers as much as possible. Whether linux containers can be used may depend on the requirements of the forecast model. Any Windows-based forecast models can be separately run on Windows hardware, Windows VMs (or in a Windows docker container).
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