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Basic Protection  

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Testing the system landscape for compliance requirements is not typically an administrator's favorite task. The fairly new open source framework called OpenSCAP helps take some of the pain out of this chore.

On the CD  

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High Sheriff  

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The Tomoyo Linux security module locks each process away into a separate jail, monitors all of the process's actions, and even helps with debugging, if so desired. Unlike other security solutions, Tomoyo is fairly easy to manage.

Debugger  

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Debugging the kernel of a running operating system has always been tricky, but now the Qemu emulator supports cross-platform kernel and module debugging at the programming language level.

Major LeaguePlayoffs  

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VMware and Citrix are peers in the market for virtualized standard servers. The two global players recently introduced new versions to keep their opponents on their toes. In this article, we compare the two products and evaluate the high-availability and monitoring strategies.

Single Source  

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Nagios might be the best known free monitoring tool, but Zabbix has steadily gained ground over the years and is now set to challenge the market leader. In this article, we look at basic Zabbix functionality and introduce you to items, triggers, and actions.

Emergency Shell  

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PHP Shell and Shell In A Box put a shell in your browser, thus facilitating web server management – even from the nearest Internet cafÈ and without SSH access.

Monitor Rally  

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Performance is very much a hot topic in monitoring environments. In this article, we look at some Nagios performance benchmarks and compare Nagios with some other monitoring alternatives.

Fenced In  

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Sometimes you have to be cruel to be kind: To avoid letting broken nodes in a Pacemaker cluster cause damage, you really need to let cluster nodes kill each other. A couple of details are very important.

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