#cloud-config merge_how: dict(recurse_array)+list(append) write_files: - path: /etc/sysconfig/heat-params owner: "root:root" permissions: "0600" content: | MESOS_MASTERS_IPS="$MESOS_MASTERS_IPS" EXECUTOR_REGISTRATION_TIMEOUT="$EXECUTOR_REGISTRATION_TIMEOUT" HTTP_PROXY="$HTTP_PROXY" HTTPS_PROXY="$HTTPS_PROXY" NO_PROXY="$NO_PROXY" AUTH_URL="$AUTH_URL" USERNAME="$USERNAME" PASSWORD="$PASSWORD" TENANT_NAME="$TENANT_NAME" VOLUME_DRIVER="$VOLUME_DRIVER" REGION_NAME="$REGION_NAME" DOMAIN_NAME="$DOMAIN_NAME" REXRAY_PREEMPT="$REXRAY_PREEMPT" ISOLATION="$ISOLATION" WORK_DIR="$WORK_DIR" IMAGE_PROVIDERS="$IMAGE_PROVIDERS" EXECUTOR_ENVIRONMENT_VARIABLES="$EXECUTOR_ENVIRONMENT_VARIABLES"