0000893: The timesync function should behave differently if ntp is running

ClearFoundation Tracker - ClearOS

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Date Submitted

Last Update

0000893

ClearOS

app-ntp - NTP Server

public

2012-12-14 10:55

2012-12-21 10:17

Reporter

NickH

Assigned To

user2

Priority

normal

Severity

tweak

Reproducibility

always

Status

closed

Resolution

fixed

Platform

OS Version

Product Version

6.3.0 Updates

Target Version

6.4.0 Beta 1

Fixed in Version

6.4.0 Beta 1

Summary

0000893: The timesync function should behave differently if ntp is running

Description

The /usr/sbin/timesync function (run through the webconfig, daily by cron and possibly during boot up) uses ntpdate which uses a single time server, time.clearsdn.com, to set the system time. If you are running ntp you are normally using different time servers so the nightly cron job introduces jitter. There is no obvious way of permanently disabling the cron job apart from commenting out the line and setting the immutable bit but this can cause problems if the program gets updated.

A better solution would be to change the /usr/sbin/timesync script so that if it detects ntpd running, instead of using the ntpdate command, it uses the "ntpd -q" command (or, failing that, just exits). The ntpq command would use the time servers configured for ntp so would not introduce any jitter.

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Additional Information