ssh-add ~/.ssh/tempprivate
"$(ssh-agent -s)" を評価する
cd contrib/terraform/aws
vi terraform.tfvars
テラフォーム初期化
terraform apply -var-file=credentials.tfvars
ansible-playbook -i ./inventory/hosts ./cluster.yml -e ansible_ssh_user=core -e bootstrap_os=coreos -b --become-user=root --flush-cache -e ansible_user=core
