Requirements for OS, Docker, Hardware, and Networking Because many features of Rancher run as deployments, and privileged mode is required to run containers within containers, you will need to install Rancher with the -privileged option. When the Rancher server is deployed in the Docker container, a local Kubernetes cluster is installed within the container for Rancher to use.
For details, refer to the documentation on migrating Rancher to a new cluster. The Rancher backup operator can be used to migrate Rancher from the single Docker container install to an installation on a high-availability Kubernetes cluster. The ability to migrate Rancher to a high-availability cluster depends on the Rancher version: See Docker Install with an External Load Balancer instead.Ī Docker installation of Rancher is recommended only for development and testing purposes.
