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document status: draft
|Incident ID||2022-05-09 confctl||Start||2022-05-09 07:44:00|
|People paged||26||Responder count||6|
|Impact||All end-user traffic routed to codfw (Central US, South America- at a low traffic moment) received an error response.|
Summary of what happened, in one or two paragraphs. Avoid assuming deep knowledge of the systems here, and try to differentiate between proximate causes and root causes.
Write a step by step outline of what happened to cause the incident, and how it was remedied. Include the lead-up to the incident, and any epilogue.
Consider including a graphs of the error rate or other surrogate.
All times in UTC.
- 00:00 (TODO) OUTAGE BEGINS
- 00:04 (Something something)
- 00:06 (Voila) OUTAGE ENDS
- 00:15 (post-outage cleanup finished)
TODO: Clearly indicate when the user-visible outage began and ended.
Write how the issue was first detected. Was automated monitoring first to detect it? Or a human reporting an error?
Copy the relevant alerts that fired in this section.
Did the appropriate alert(s) fire? Was the alert volume manageable? Did they point to the problem with as much accuracy as possible?
TODO: If human only, an actionable should probably be to "add alerting".
What weaknesses did we learn about and how can we address them?
What went well?
(Use bullet points) for example: automated monitoring detected the incident, outage was root-caused quickly, etc
What went poorly?
(Use bullet points) for example: documentation on the affected service was unhelpful, communication difficulties, etc
Where did we get lucky?
(Use bullet points) for example: user's error report was exceptionally detailed, incident occurred when the most people were online to assist, etc
How many people were involved in the remediation?
(Use bullet points) for example: 2 SREs and 1 software engineer troubleshooting the issue plus 1 incident commander
Links to relevant documentation
Add links to information that someone responding to this alert should have (runbook, plus supporting docs). If that documentation does not exist, add an action item to create it.
|People||Were the people responding to this incident sufficiently different than the previous five incidents?|
|Were the people who responded prepared enough to respond effectively|
|Were fewer than five people paged?|
|Were pages routed to the correct sub-team(s)?|
|Were pages routed to online (business hours) engineers? Answer “no” if engineers were paged after business hours.|
|Process||Was the incident status section actively updated during the incident?|
|Was the public status page updated?|
|Is there a phabricator task for the incident?|
|Are the documented action items assigned?|
|Is this incident sufficiently different from earlier incidents so as not to be a repeat occurrence?|
|Tooling||To the best of your knowledge was the open task queue free of any tasks that would have prevented this incident? Answer “no” if there are
open tasks that would prevent this incident or make mitigation easier if implemented.
|Were the people responding able to communicate effectively during the incident with the existing tooling?|
|Did existing monitoring notify the initial responders?|
|Were all engineering tools required available and in service?|
|Was there a runbook for all known issues present?|
|Total score (count of all “yes” answers above)|