OpenStack is a virtual machine management software, responsible for initiating and managing virtual machine instances. Minimum requirements it is a hardware configuration of a control node, a compute nodes. OpenStack mounted on the control node, the virtual machine operating system is installed on the computing nodes, the virtual machine instance starts on a computing node, and deploy applications in a virtual machine. OpenStack compute nodes hardware configuration is the number of virtual machine instances by the start of it together with the required run itself (mainly CPU cores and memory size). CPU, network card, etc. need to support virtualization technology, CPU must support full virtualization technology. For example, a virtual compute nodes OpenStack four virtual machines, each virtual machine 7G, a total of 28 G, 4G systems itself, then it is required memory 28G, the same way virtual machines 4 of 16 nodes nuclear this calculation, 4 with the core system itself, then the number of computing nodes the required nuclear core 20.
OpenStack network environment is required: two physical NIC (as far as possible the same type), to provide a network using an external network providing access. The number of switch ports required to meet the minimum needs of dual-NIC server connection. A remote Windows machine used to copy data, the remote control server, install OpenStack. Segment assignment: internal network segment (private network), is used to assign IP instance created. Not specify a default allocation 192.168.1.0/24. External network: LAN provides LAN range of available network can access. Default 172.16.50.0/24. DNS: to provide DNS, does not provide a default 8.8.8.8.