v1.2.0-beta.0

Attention Needed

• Kubernetes has announced deprecation of the Docker (dockershim) support in the Kubernetes 1.20 release. It's expected that Docker support will be removed in Kubernetes 1.22
  • All newly created clusters running Kubernetes 1.21+ will be provisioned with containerd instead of Docker
  • Automated migration from Docker to containerd is currently not available, but is planned for one of the upcoming KubeOne releases
  • We highly recommend using containerd instead of Docker for all newly created clusters. You can opt-in to use containerd instead of Docker by adding containerRuntime configuration to your KubeOne configuration manifest:

    containerRuntime:
      containerd: {}

    For the configuration file reference, run kubeone config print --full.

Known Issues

• Provisioning Kubernetes 1.20 clusters results with one of the control plane nodes being unhealthy/broken for the first 5-10 minutes after provisioning the cluster. This causes KubeOne to fail to create MachineDeployment objects because the machine-controller-webhook service can't be found. Also, one of the NodeLocalDNS pods might get stuck in the crash loop.
  • KubeOne currently still doesn't support Kubernetes 1.20. We do not recommend provisioning 1.20 clusters or upgrading existing clusters to Kubernetes 1.20
  • We're currently investigating the issue. You can follow the progress in the issue #1222

Added

• Add support for containerd container runtime (#1180, #1188, #1190, #1205, #1227, #1229)
  • Kubernetes has announced deprecation of the Docker (dockershim) support in the Kubernetes 1.20 release. It's expected that Docker support will be removed in Kubernetes 1.22
  • All newly created clusters running Kubernetes 1.21+ will default to containerd instead of Docker
  • Automated migration from Docker to containerd is currently not available, but is planned for one of the upcoming KubeOne releases

Changed

Bug Fixes

• Fix wrong legacy Docker version on RPM systems (#1191)

Terraform Configs

• Replace GoBetween load-balancer in vSphere Terraform example by keepalived (#1217)

Addons

• Fix DNS resolution issues for the Backups addon (#1179)

Checksums

SHA256 checksums can be found in the kubeone_1.2.0-beta.0_checksums.txt file.