Unix: Root cause analysis


Maybe your servers need more memory or you need a cluster configured so that any one server going down has no observable affect on overall availability.

Some root causes might not be worth addressing. An application that fails once a year, but would cost a quarter of a million dollars to replace should maybe just go down once year, especially if you can choose when it goes down. Always consider whether the cure is something you or your organization can afford. How does the cost of the problem compare to the cost of the fix?

Digging down to a root cause can be very gratifying if you can pin down the problem and overcome it, but just thinking through the possible causes will keep you on your toes and alert to anything unusual happening on your systems.

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