Which kubernetes version is supported in docker version 18.09

Question

I am using Raspberry pi for kubernetes cluster setup. I was using below docker version:

Client:
 Version:           18.06.1-ce
 API ver         


        

Answer 1

Here's how I "fixed" mine:

$ sudo kubeadm init --ignore-preflight-errors=SystemVerification
...
        [WARNING SystemVerification]: unsupported docker version: 18.09.0

Here's what I saw when "preflight errors" were not ignored:

$ sudo kubeadm init
...
[preflight] Some fatal errors occurred:
        [ERROR SystemVerification]: unsupported docker version: 18.09.0
[preflight] If you know what you are doing, you can make a check non-fatal with `--ignore-preflight-errors=...`

Here's the version of kubeadm I used:

$ kubeadm version --output json
{
  "clientVersion": {
    "major": "1",
    "minor": "12",
    "gitVersion": "v1.12.2",
    "gitCommit": "17c77c7898218073f14c8d573582e8d2313dc740",
    "gitTreeState": "clean",
    "buildDate": "2018-10-24T06:51:33Z",
    "goVersion": "go1.10.4",
    "compiler": "gc",
    "platform": "linux/amd64"
  }
}