#cloud-config merge_how: dict(recurse_array)+list(append) write_files: - path: /etc/sysconfig/heat-params owner: "root:root" permissions: "0644" content: | KUBERNETES_SERVER_URL="$KUBERNETES_SERVER_URL" KUBERNETES_SALT_URL="$KUBERNETES_SALT_URL" MASTER_IP=$MASTER_IP CONTAINER_SUBNET=10.246.0.0/16