Runbook
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In a computer science system or a network, RunBook is a routine compilation of the procedures and operations being made by the administrator or operator of the system. Typically, it will contain the procedures to begin, stop and supervise the system. Also it can contain descriptions for special request handling, and handling of contingencies.
An effective RunBook will allow other operators, with prerequisite expertise, to effectively manage and troubleshoot a system.
RunBooks are typically created by top tier managed service providers and include procedures for every anticipated scenario from starting a system to troubleshooting an outage. Step-by-step decision trees are generally used to determine the effective course of action (e.g., if application is not responding verify DNS resolution, if DNS resolution is OK then verify service is active, if service active then check logs, if log error Y then etc.)