  5G represents a revolutionary shift with respect to previous generations
given its design centered on network softwarization. Within such a change of
paradigm, cloud-native solutions are widely regarded as the future of vertical
application development because of their enhanced flexibility and adaptability
to complex and dynamic scenarios. In this context, we present an experimental
framework with over-the-air transmissions that tackles two critical aspects for
enhancing the lifecycle management of 5G and beyond networks: cloud-native
deployments of 5G core network functions (NFs) and end-to-end monitoring.
First, we deploy Open5GS and Prometheus-based monitoring as containerized
network functions (CNFs) in a Kubernetes cluster spanning a multi-tier network
with a multi-access edge computing (MEC) host. We then demonstrate the
end-to-end monitoring system by showcasing via Grafana dashboards both
infrastructure resources and radio metrics of two scenarios; one devoted to
user plane function (UPF) re-selection and the other to user mobility.
