Issue with docker version 20.10 --> Error in userdata and terraform apply

[masoodazizi]

Because of a possible issue with docker version 20.10, the userdata of the instances fail running the kubeadm command, because the environment variable HOME is not defined.

I have fixed the issue in the forked project by the following code snippet in the userdata of both master and worker nodes before kubeadm command:

  # Fix for the issue with docker v20.10 and HOME env var
  DOCKER_VER=`docker --version | awk '{print $3}' | awk -F'.' '{print $1 $2}'`
  if [[ $${DOCKER_VER} = '2010' ]]; then
    echo 'Docker Version 20.10'
    echo "Fixing issue with manual definition of HOME env var"
    export HOME=/root
  fi