Re: [chrony-users] Getting chrony status

It will only show synchronized after such time. It'll be the last line I think. I pipe it out to a file and grep, loop, clear file, sleep 1 min, repeat. Not pretty but it works.

On Aug 6, 2016 11:06 PM, "Mauro Condarelli" <mc5686@xxxxxxxxx> wrote:

Thanks Steve.
I know about "chronyc tracking", but that is human-readable info.
I need to parse it (in a shell script) to delay starting of my app until time has settled down.
Is it enough to wait for "Leap status" to go to "Normal"?
.... or should I take into consideration other values?.

typical output at startup is:

/ # chronyc tracking

Reference ID : 0.0.0.0 ()

Stratum : 0

Ref time (UTC) : Thu Jan 1 00:00:00 1970

System time : 0.010319719 seconds fast of NTP time

Last offset : +0.000000000 seconds

RMS offset : 0.000000000 seconds

Frequency : 6.202 ppm slow

Residual freq : +0.000 ppm

Skew : 0.000 ppm

Root delay : 0.000000 seconds

Root dispersion : 0.000000 seconds

Update interval : 0.0 seconds

Leap status : Not synchronised

while a "well behaved" entry looks like:

/ # chronyc tracking

Reference ID : 212.45.144.16 (saguaro.bilink.it)

Stratum : 3

Ref time (UTC) : Sun Aug 7 02:57:32 2016

System time : 0.000008512 seconds fast of NTP time

Last offset : -0.000437271 seconds

RMS offset : 0.000437271 seconds

Frequency : 6.202 ppm slow

Residual freq : -7.681 ppm

Skew : 0.040 ppm

Root delay : 0.024563 seconds

Root dispersion : 0.047727 seconds

Update interval : 1.9 seconds

Leap status : Normal

Il 07/08/2016 01:07, Steve Horton ha scritto:

Chronyc tracking -will show how "off" you are from the time of your servers UTC. I usually set my clocks in the bios to utc, or very close and chrony will use this as a starting point after boot.

On Aug 6, 2016 12:11 PM, "Mauro Condarelli" <mc5686@xxxxxxxxx <mailto:mc5686@xxxxxxxxx>> wrote:

Hi,
I need to start an application with stable and confirmed date&time, i.e.: after chrony has started, initialized and set the system clock to some presumably valid value.
Since I am using clock skewing if system time is in the future (need strictly monotonic time), internet connection may be missing at startup and several other mishaps, it may take a somewhat long time for chrony to stabilize (even several minutes).

How can I test (from shell script) if and when system time is (supposed to be) stable?

TiA
Mauro

-- To unsubscribe email chrony-users-request@xxxxxxxxxxfamily.org <mailto:chrony-users-request@chrony.tuxfamily.org> with "unsubscribe" in the subject..
For help email chrony-users-request@xxxxxxxxxxfamily..org <mailto:chrony-users-request@chrony.tuxfamily.org> with "help" in the subject.
Trouble? Email listmaster@xxxxxxxxxxxxxxxxxxxg <mailto:listmaster@xxxxxxxxxxxamily.org>.

--
To unsubscribe email chrony-users-request@xxxxxxxxxxfamily.org with "unsubscribe" in the subject.
For help email chrony-users-request@xxxxxxxxxxfamily.org with "help" in the subject.
Trouble? Email listmaster@xxxxxxxxxxxxxxxxxxxg.