Final test: SRE practices: SLOs, incidents, redundancy

Question 10 of 15

One correct answer

A release added the typo `proxy_set_heder` to the nginx config, the reload failed, and eight seconds later ops restarted nginx — and the site went down. Which root cause fits a blameless postmortem?

nginx is unreliable — it crashes on an ordinary restart.
The release was written by a careless person, it has to be rewritten.
The release did not run nginx -t or look at the reload result, so the typo waited for the first restart.
ops restarted nginx without checking the config and took the site down.

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