Postmortem Template

Here is the general format of Postmortems writeups that we use at Cloud Posse.

Incident #1 - Descriptive Name of Incident (2018-06-06)

Facts value
On-call Engineer John Doe
Start Time 2018-06-06 12:58 PST
End Time 2018-06-06 13:55 PST
Total Duration 39 Minutes
Affected Systems Production Web Tier



A brief explanation of what happened and what went wrong.


This should read like an executive summary of the problem. It should include:

FIVE whys

Explain why the outage happened. Ask “why” for each reason given.

  1. Reason 1
  2. Reason 2
  3. Reason 3
  4. Reason 4
  5. Reason 5

Unexplained problems

Explain what is not understood, even after the post-mortem.


List of actions performed to resolve the problem:

What did not help/work:

These attempted remediations had no positive impact.


Short term

List short-term planned fixes with links to the ticketing system. These are fixes that should be carried out ASAP.

Medium term

Other Considerations


Supporting Charts

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