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Clock offset

4 messages in this thread

list S Aiello · Mon, 17 Sep 2007 11:08:00 -0400 ·
Will there be an option in the future to have a yellow & red clock offset 
threshold ?  presently there only seems to be a yellow threshold.

Thank you,
 ~Steve
list Riccardo Baldanzi · Mon, 17 Sep 2007 17:18:16 +0200 ·
There's an option in hobbit-clients.cfg:

#    CLOCK maximum-offset
#             If the system clock of the client differs from that of the
Hobbit
#             server by more than "maximum-offset" seconds, then the CPU
status
#             column will go yellow. Note that the accuracy of this test is
limited,
#             since it is affected by the time it takes a client status
report to
#             go from the client to the Hobbit server and be processed. You
should
#             therefore allow for a few seconds (5-10) of slack when you
define
#             your max. offset.
#             It is not wise to use this test, unless your servers are
synchronized
#             to a common clock, e.g. through NTP.

Hope is useful.

RB
quoted from S Aiello


On 9/17/07, user-ce96540ed38f@xymon.invalid <user-ce96540ed38f@xymon.invalid> wrote:
Will there be an option in the future to have a yellow & red clock offset
threshold ?  presently there only seems to be a yellow threshold.

Thank you,
~Steve

list Henrik Størner · Mon, 17 Sep 2007 17:31:57 +0200 ·
quoted from Riccardo Baldanzi
On Mon, Sep 17, 2007 at 11:08:00AM -0400, user-ce96540ed38f@xymon.invalid wrote:
Will there be an option in the future to have a yellow & red clock offset 
threshold ?  presently there only seems to be a yellow threshold.
It will only go yellow, because the test is not very accurate - it
depends on the communication between the client and the server, and
also on whether the Hobbit server has OK time or not.


Regards,
Henrik
list S Aiello · Mon, 17 Sep 2007 12:17:43 -0400 ·
quoted from Henrik Størner
On Monday 17 September 2007, Henrik Stoerner wrote:
On Mon, Sep 17, 2007 at 11:08:00AM -0400, user-ce96540ed38f@xymon.invalid wrote:
Will there be an option in the future to have a yellow & red clock offset
threshold ?  presently there only seems to be a yellow threshold.
It will only go yellow, because the test is not very accurate - it
depends on the communication between the client and the server, and
also on whether the Hobbit server has OK time or not.

Yes, I understood that. I am not performing +- 5 second checks, but more like 
+- 150 (yellow) +- 300 (red) checks. So in my scenario, I think there is 
plenty of buffer time for client/server communication issues.