SRE practices: SLOs, incidents, redundancy

Quiz: SLIs, SLOs and error budgets

Question 1 of 10

The share of good answers and the p95 from an nginx log over a time window, code classes, the error budget of a 99.5 % SLO over 30 days, what is left of it after an outage and the burn rate. The questions follow the lessons “SLI: the share of good requests” and “SLOs and error budgets”.

10 questions · threshold 70%

One correct answer

A check requests `curl http://localhost/` once a minute and gets 200, while access.log shows 7 % of 5xx answers over the last hour — all on /api/ addresses. Why did the check miss them?

The 5xx answers in the log are retries nginx makes by itself.
It sends one request to the home page, and the errors go to requests to /api/.
nginx does not log answers to requests from the machine itself.
curl does not print 5xx codes unless an option asks for them.

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Quiz: SLIs, SLOs and error budgets

A check requests curl http://localhost/ once a minute and gets 200, while access.log shows 7 % of 5xx answers over the last hour — all on /api/ addresses. Why did the check miss them?

A check requests `curl http://localhost/` once a minute and gets 200, while access.log shows 7 % of 5xx answers over the last hour — all on /api/ addresses. Why did the check miss them?