Важно использовать версию 0.12.6
Установка terraform под линукс
wget https://releases.hashicorp.com/terraform/0.12.6/terraform_0.12.6_linux_amd64.zip
unzip https://releases.hashicorp.com/terraform/0.12.6/terraform_0.12.6_linux_amd64.zip
mkdir bin
mv terraform ~/bin
export PATH=~/bin:$PATH
echo "PATH=$PATH" >> ~/.bashrc