All the great open source cloud solutions have similar goals, but they all have different histories, different communities, and some subtly different areas of emphasis. We asked CloudStack VP Chip Childers about how Apache CloudStack fits in.
In some particularly sophisticated DDoS attacks, the attackers rely on and target the cloud, allowing attackers to work around conventional defense mechanisms. We explain how a DDoS attack in the cloud works, and how you can defend against it.
The OpenNebula enterprise cloud management platform emerged in 2005, so it has been on the market longer than many comparable products. In the current version 4.2 (code-named Flame), it has presented itself in a new guise.
OpenStack is attracting lots of publicity. Is the solution actually qualified as a cloud prime mover? We take a close look at the OpenStack cloud environment and how it works.
If you don't trust the cloud services of Amazon or cannot store customer data there for privacy reasons, you can create your own Eucalyptus cloud that is compatible with the Amazon tools and can be installed in a flash.
In June, Citrix released the latest version of XenServer Enterprise as open source software. The manufacturer hopes to benefit from input from the community, attract more customers for its desktop virtualization solution, and improve its market position.
Available on almost all platforms, the open source backup software Bacula is popular with many administrators – now the Bareos fork is poised to expand its leading role.
More than 500 new features have been incorporated into the current release of Oracle Database 12c. Among other things, these changes offer a new architecture with pluggable databases that facilitate the management of a private and public cloud database and database consolidation.
Exchange Server 2013 provides a comprehensive, role-based rights management feature. Rights and roles can be managed in the Exchange console, with PowerShell, or with additional tools. We demonstrate all three options.
Logfiles contain extremely useful traces of everyday events – if only they weren't so boring. Fortunately, special tools help you generate and even animate colorful, easily interpretable graphics.
For many cloud admins, the kernel's udev system and associated rules equate to infinite renumbering of network interfaces and manual adjustment. We show how to keep on top of these tasks without deleting system files en masse.
System memory is extremely important to your applications, which is why many systems use error-correcting code (ECC) memory. ECC memory can typically detect and correct single-bit memory errors, and Linux has a reporting capability that collects this information.
Software Defined Networking (SDN) marks a paradigm shift toward a more holistic approach for managing networking hardware. The Floodlight OpenFlow controller offers an easy and inexpensive way to experience the power of SDN.
The Spacewalk server provides a comprehensive framework for managing Linux systems, and if you need to automate tasks, the XML-RPC-based API and the spacecmd tool are useful aids. We compare the two variants.
