A natural consequence of software-defined storage and software-defined data centers is the software-defined wide area network, or the Internet connections between locations and cloud services.
Any OpenStack installation that hosts services and VMs for several customers poses a challenge for the security-conscious admin. Hardening the overall system can turn the porous walls into a fortress – but you'll need more than a little mortar.
If you spend very much of your time pushing containerized services from server to server, you might be asking yourself: Why not databases, as well? We describe the status quo for RDBMS containers.
Virtualization solutions isolate their VM systems far more effectively than a container host isolates its guests. However, implementation weaknesses in the hypervisor and configuration errors can lead to residual risk, as we show, using KVM as an example.
