Observability: metrics, alerts, logs

Quiz: logs from many machines

Question 8 of 10

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?

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

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