Unsupported docker version 18.09.2 on Rancher 2

Rancher
1

According to this: https://rancher.com/docs/rancher/v2.5/en/installation/requirements/ Rancher2 should spport Docker version 18.09.2. However, when adding the second node of a cluster, I get this error:

2019/02/18 09:51:02 [ERROR] cluster [c-glcfg] provisioning: Unsupported Docker version found [18.09.2], supported versions are [1.11.x 1.12.x 1.13.x 17.03.x]

Is there any reason for that to happen?

2

See https://github.com/rancher/rke/releases/tag/v0.1.16 and Runc vulnerability - CVE-2019-5736

3

I don’t understand. Is the rke you’re linking to part of the rancher2 I can download from docker hub or not?

4

Provisioning Clusters in Rancher with Docker 18.06.2 or Docker 18.09.2

If you are launching clusters that have Rancher launching and managing Kubernetes, in the Kubernetes options for Docker versions on nodes , you will need to keep the default of Allow unsupported versions in order for the Kubernetes cluster to provision correctly with Docker 18.06.2 or Docker 18.09.2. The next patch versions of Rancher will be updated so this will not be required.