2020-09-30: The `shard_urgent_cpu_bound` component of the `sidekiq` service, (`main` stage), has an apdex-score burn rate outside of SLO
Summary
shard_urgent_cpu_bound
component of the sidekiq
service, (main
stage), has an apdex-score burn rate outside of SLO
2020-09-30: The Pagerduty alerts The shard_urgent_cpu_bound
component of the sidekiq
service, (main
stage), has an apdex-score burn rate outside of SLO
and #28379 Firing 1 - Postgres Replication lag (in bytes) is high
Caused by a database incident
Timeline
All times UTC.
2020-10-01
- 00:21 - ggillies gets pagerduty alert https://gitlab.pagerduty.com/incidents/PCQB6MW
- 00:28 - ggillies gets pagerduty alert https://gitlab.pagerduty.com/incidents/P1WJK26
- 00:33 - alert https://gitlab.pagerduty.com/incidents/P1WJK26 clears without intervention
- 00:36 - alert https://gitlab.pagerduty.com/incidents/PCQB6MW clears without intervention
- 01:04 - ggillies declares incident in Slack using
/incident declare
command.
Click to expand or collapse the Incident Review section.
Incident Review
Summary
- Service(s) affected:
- Team attribution:
- Minutes downtime or degradation:
Metrics
Customer Impact
- Who was impacted by this incident? (i.e. external customers, internal customers)
- What was the customer experience during the incident? (i.e. preventing them from doing X, incorrect display of Y, ...)
- How many customers were affected?
- If a precise customer impact number is unknown, what is the estimated potential impact?
Incident Response Analysis
- How was the event detected?
- How could detection time be improved?
- How did we reach the point where we knew how to mitigate the impact?
- How could time to mitigation be improved?
Post Incident Analysis
- How was the root cause diagnosed?
- How could time to diagnosis be improved?
- Do we have an existing backlog item that would've prevented or greatly reduced the impact of this incident?
- Was this incident triggered by a change (deployment of code or change to infrastructure. If yes, have you linked the issue which represents the change?)?
5 Whys
Lessons Learned
Corrective Actions
Guidelines
Edited by Graeme Gillies