A host runs chrony as its NTP client. Which command shows the list of time sources chrony is currently talking to and how it rates each one?
LPIC-1 Exam 102-500, objective 108. Essential system services medium
Draft — not checked yet. This question was written from the published exam objectives and cites the clause it comes from, but nobody has yet read it against that clause and signed for it.
It is kept out of search results and out of mock exams until they have. Read the source below before you take the answer as settled.
The options
Not correct chronyc makestep
Wrong. makestep tells chronyd to correct the clock in one immediate jump instead of slewing it gradually. It reports no source list.
Not correct ntpq -p
Wrong tool for this daemon. ntpq is the query program for the classic ntpd, and -p lists ntpd's peers. It does not talk to chronyd.
Correct chronyc sources
Correct. chronyc is chrony's command-line control client, and `sources` prints each configured server or peer with its stratum, reachability and measured offset.
Not correct chronyd -q
Wrong. -q makes chronyd set the clock once and exit — a one-shot correction, not a status report, and it will fail if a chronyd instance is already running.
Why
chrony splits into the daemon chronyd (configured in /etc/chrony.conf on RHEL-family systems, /etc/chrony/chrony.conf on Debian-family ones) and the control client chronyc. Useful chronyc subcommands: `sources` for the source list, `sourcestats` for the drift and skew statistics per source, and `tracking` for the local clock's current offset from its reference. The classic ntpd equivalents are `ntpq -p` and `ntpstat`.
Where this comes from
- Cited
- LPI exam objective 108.1
- What it says
- Basic configuration and querying of NTP clients including chrony.
Practise this
Reading one question is not practice. The trainer will draw a set from objective 108 and space the ones you get wrong.