Cisco announced this morning it intends to buy Metacloud, a startup with OpenStack chops. This news comes hot on the heels of HP buying Eucalyptus last week and Rackspace announcing they are taking themselves off the market this morning. As Stephen Stills once sang, “There’s something happening here, what it is ain’t exactly clear.” Metacloud offers OpenStack as a service allowing customers to operate like a public cloud, but inside their own datacenters. The idea is to give companies that same agility, scalability and flexibility you get from public cloud offerings, but instead of being on the open internet, it’s inside a private data center.