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The Site Reliability Workbook by Stephen Thorne, Kent Kawahara, David K. Rensin, Niall Richard Murphy, Betsy Beyer

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Chapter 9. Incident Response

Everyone wants their services to run smoothly all the time, but we live in an imperfect world in which outages do occur. What happens when a not-so-ordinary, urgent problem requires multiple individuals or teams to resolve it? You are suddenly faced with simultaneously managing the incident response and resolving the problem.

Resolving an incident means mitigating the impact and/or restoring the service to its previous condition. Managing an incident means coordinating the efforts of responding teams in an efficient manner and ensuring that communication flows both between the responders and to those interested in the incident’s progress. Many tech companies, including Google, have adopted and adapted best practices for managing incidents from emergency response organizations, which have been using these practices for many years.

The basic premise of incident management is to respond to an incident in a structured way. Large-scale incidents can be confusing; a structure that teams agree on beforehand can reduce chaos. Formulating rules about how to communicate and coordinate your efforts before disaster strikes allows your team to concentrate on resolving an incident when it occurs. If your team has already practiced and familiarized themselves with communication and coordination, they don’t need to worry about these factors during an incident. ...

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