公式のをそのまま
https://docs.aws.amazon.com/ja_jp/eks/latest/userguide/install-aws-iam-authenticator.html
curl -o aws-iam-authenticator https://amazon-eks.s3-us-west-2
.amazonaws.com/1.14.6/2019-08-22/bin/linux/amd64/aws-iam-authenticator
chmod +x ./aws-iam-authenticator
mkdir -p $HOME/bin && cp ./aws-iam-authenticator $HOME/bin
/aws-iam-authenticator && export PATH=$HOME/bin:$PATH
echo 'export PATH=$HOME/bin:$PATH' >> ~/.bashrc
aws-iam-authenticator help