Final test: Observability: metrics, alerts, logs

One correct answer

The journal has the line python3[1094]: report: cache file /var/cache/lab-report/day.json is missing. The machine runs three Python services. How do you find out which one wrote it?

• A python3 is the service's name.
• B There is no way — apart from this line, the journal keeps nothing about the record.
• C By the record's _SYSTEMD_UNIT field in journalctl -o json.
• D 1094 is the service's number in systemd.