You can use the Kubernetes on Ubuntu. Ubuntu provides the best pure upstream Kubernetes which tested on the different range of the Clouds.
What is the default platform for Kubernetes
Most of the Cloud services providers to run the cloud services on Ubuntu. Ubuntu provides the up to date container capabilities in the latest kernels
Ubuntu provides the three types of Kubernetes services
- Charmed Kubernetes
If you want to know more about the Kubernetes. You can visit the official website of Ubuntu.