This document shows what are compatible Kubernetes, Terraform, and operating systems versions with the current KubeOne version.

Supported Providers

KubeOne works on any infrastructure out of the box. Natively supported providers have support for additional features and are frequently tested with the current KubeOne version. The additional features include the KubeOne Terraform integration and the integration with Kubermatic machine-controller.

KubeOne supports AWS, Azure, DigitalOcean, GCP, Hetzner Cloud, OpenStack, Packet, and VMware vSphere.

Supported Kubernetes Versions

Each KubeOne version supports Kubernetes versions supported by upstream at the time of the KubeOne release. You can find more details about the upstream support policy in the Version Skew Policy document.

In the following table you can find the supported Kubernetes versions for the current KubeOne version.

KubeOne version1.

* Kubernetes 1.16 will be supported as long as it’s supported by upstream. It’s supposed to reach End-of-Life several weeks after the 1.19 release.

Additionally, we do not recommend installing or upgrading to the following Kubernetes versions:

  • 1.16.13 due to an upstream bug with health checks for kube-controller-manager and kube-scheduler (more details can be found in the issue #93194)
  • Releases older than 1.16.11/1.17.7/1.18.4 as they are affected by multiple CVEs
  • On CentOS 7 releases other than 1.18.6 and 1.17.9 are not working properly due to some networking-related issues

Supported Terraform Versions

The KubeOne Terraform integration requires Terraform v0.12.0 or newer.

Additionally, the example Terraform configs for some providers may require a newer Terraform version:

  • The example Terraform configs for AWS require Terraform v0.12.10 or newer

For more details, you can check the file that comes with the example Terraform configs (example file).

Supported Operating Systems

The following operating systems are supported:

  • Ubuntu 18.04 (Bionic)
  • Ubuntu 20.04 (Focal)
  • CentOS 7**
  • CentOS 8
  • RHEL 7
  • RHEL 8
  • CoreOS
  • Flatcar

** Only Kubernetes versions 1.18.6 and 1.17.9 are known to work properly with CentOS 7.