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Cloud in a Box

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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.

Stack Check

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Apache's CloudStack offers flexibility and some powerful networking features.

Painting by Numbers

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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.

Errant Bits

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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.

Reaching for the Stars

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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.

Cloud Wars

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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.

Open Space

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We provide an overview of FreeNAS and ZFS, its main filesystem, then show how to set up and maintain a FreeNAS installation.

Tails

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Technical Knockout

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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.

Better Backups

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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.

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