From Newsgroup: comp.protocols.time.ntp
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Solaris also has a monitor mode for NTP. When that mode is invoked, we explicitly drop the privilege needed to adjust the clock. Another
situation is if ntpd is run in a Solaris zone (similar to a Linux
container). By default these zones don't have the privilege needed to
set the clock. In a perfect world, ntpd would exit abnormally with an
error message when it is run in a zone without the priv to set the clock
and when run in monitor mode, the ntp.conf file would always contain
"disable ntp". However, I can't control what the admin puts into the
ntp.conf file. Further, it can be convenient to be able to switch
between the two modes without having to change the ntp.conf file.
What we actually do is report the error once the first time, and if it persists, stop trying to set the clock. When in monitor mode, we set an environment variable to suppress reporting the error the first time.
That being said, I am sure I can work around whatever you put into the
code, as I am doing now. Indeed, perhaps a better approach would be to
set "disable ntp" when ntpd sees the environment variable.
On 11/14/2024 3:49 AM, Dave Hart wrote:
On Thu, Nov 14, 2024 at 7:04 AM Harlan Stenn <stenn@nwtime.org> wrote:
To be clear, deciding when ntpd should abort if it cannot
discipline the
clock should be done at the "right" place in the code - not too
early,
and not too late.
Well, Goldilocks, it seems obvious to me -- when an attempt to modify
the system time/clock rate fails.
Cheers,
Dave Hart
--
--
I haven't lost my mind, it is backed up in the cloud somewhere.
Oracle <
http://www.oracle.com>
Brian Utterback, Principal Software Engineer
Phone: +16038973049 <tel:+16038973049>, Mobile: +16035577683 <tel:+16035577683>
https://oracle.zoom.us/s/2728168892
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Solaris also has a monitor mode for NTP. When that mode is invoked,
we explicitly drop the privilege needed to adjust the clock. Another
situation is if ntpd is run in a Solaris zone (similar to a Linux
container). By default these zones don't have the privilege needed
to set the clock. In a perfect world, ntpd would exit abnormally
with an error message when it is run in a zone without the priv to
set the clock and when run in monitor mode, the ntp.conf file would
always contain "disable ntp". However, I can't control what the
admin puts into the ntp.conf file. Further, it can be convenient to
be able to switch between the two modes without having to change
the ntp.conf file. <br>
<br>
What we actually do is report the error once the first time, and if
it persists, stop trying to set the clock. When in monitor mode, we
set an environment variable to suppress reporting the error the
first time. <br>
<br>
That being said, I am sure I can work around whatever you put into
the code, as I am doing now. Indeed, perhaps a better approach would
be to set "disable ntp" when ntpd sees the environment variable. <br>
<br>
<br>
<div class="moz-cite-prefix">On 11/14/2024 3:49 AM, Dave Hart wrote:<br>
</div>
<blockquote type="cite" cite="mid:
CAMbSiYBwjOkQsUNdUT0J0_7xFRZOwjgCCufU8QFDRSYMQ2FUEA@mail.gmail.com">
<div dir="ltr"><br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Thu, Nov 14, 2024 at
7:04 AM Harlan Stenn <<a href="mailto:
stenn@nwtime.org" moz-do-not-send="true" class="moz-txt-link-freetext">
stenn@nwtime.org</a>>
wrote:<br>
</div>
<blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">To
be clear, deciding when ntpd should abort if it cannot
discipline the <br>
clock should be done at the "right" place in the code - not
too early, <br>
and not too late.<br>
</blockquote>
<div><br>
</div>
<div class="gmail_default" style="font-family:"trebuchet ms",sans-serif">Well,
Goldilocks, it seems obvious to me -- when an attempt to
modify the system time/clock rate fails.</div>
<div>
<div dir="ltr" class="gmail_signature">
<div dir="ltr">
<div><font face="tahoma, sans-serif" color="#666666"><br>
</font></div>
<font face="tahoma, sans-serif" color="#666666">Cheers,<br>
Dave Hart</font></div>
</div>
</div>
<br class="gmail-Apple-interchange-newline">
</div>
</div>
</blockquote>
<br>
<div class="moz-signature">-- <br>
-- <br>
<font color="#666666" face="Verdana, Arial, Helvetica, sans-serif" size="2">I haven't lost my mind, it is backed up in the cloud
somewhere.</font>
<p><font color="#666666" face="Verdana, Arial, Helvetica, sans-serif" size="2"></font>
<a href="
http://www.oracle.com" target="_blank"><img src="cid:
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<font color="#312D2A" size="2" face="Oracle Sans, Verdana, Arial, Helvetica, sans-serif">Brian
Utterback, Principal Software Engineer<br>
Phone: <a href="tel:+16038973049" moz-do-not-send="true">+16038973049</a>,
Mobile: <a href="tel:+16035577683" moz-do-not-send="true">+16035577683</a>
<br>
<a href="
https://oracle.zoom.us/s/2728168892" moz-do-not-send="true" class="moz-txt-link-freetext">
https://oracle.zoom.us/s/2728168892</a><br>
One Oracle Drive, Nashua, NH 03062</font>
<br>
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