Automating Linux and Unix System Administration by Nathan Campi, Kirk Bauer

By Nathan Campi, Kirk Bauer

Bauer K., Campi N. Automating Linux and Unix approach management, moment version (Apress, 2008)(ISBN 1430210591)

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Normally your company has established people empowered to make business decisions about when a service can and should go down for maintenance. These staff members understand the established requirements for advance notifications to customers, partners, and users. They usually also understand internal or external factors that would affect whether a scheduled time is a good fit for the business. You can’t decide on your own to make changes in an unannounced window, or perform maintenance that takes down some functionality of your applications or systems without prior approval.

In many cases, detecting problems is a great step forward in your automation process. But how about automatically fixing problems? This too can be a powerful technique. If systems fix their own problems, you will get more full nights of sleep. But if your auto-repair methods are overzealous, you might end up causing more problems than you solve. We will definitely explore self-repair whenever appropriate. An administrator always has to consider security. With every solution you implement, you must be certain you are not introducing any new security issues.

You might need to perform these activities separately for all your site’s operating systems and hardware platforms (SPARC vs. x86 vs. ). Here’s an overview of the automated change development process: s -AKETHECHANGEINATESTENVIRONMENT s -AKEITFITYOURPOLICYFOREXAMPLE MAKEITRUNASANONROOTUSERORINSTALLITIN a specific directory tree. UTOMATETHEDEPLOYMENTSTEPS s 4ESTTHEDEPLOYMENTTOASMALLNUMBEROFTESTINGORSTAGINGHOSTSANDCONFIRM that you achieve the desired effects.

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