openstack node
Downloading CentOS-7-x86_64-DVD-1503-01.iso into the isos/ directory
node:To place the node program to pack the required source files, etc.;
iso:Place to play the ISO mirror the required source files, etc.;
iso_cache:Pack the ISO temporary folder, and the last ISO is generated in this directory;
node_cache:RPM Packet Temporary folder;