[Xymon] Terabithia or compile

Fri Jun 19 05:46:38 CEST 2020

Looks like ntpdate and options are defined in ~/lib/environ.c  and ref. in
the ~/xymonet/xymonnet.c and ~/xymond/rrd/do_net.c code.    Looks like
something that needs to be updated, as I'm running a dev xymon server on
CentOS 8
and the ntp rpm's are not part of the distro anymore.

Dave

On Thu, Jun 18, 2020 at 11:13 PM Jeremy Laidman <jeremy at laidman.org> wrote:

> I think there's an historical reason for the ntp package being required.
>
> The xymonnet binary uses ntpdate (via NTPDATE defined in xymonserver.cfg)
> to be able to monitor the "ntp" service. Specifically it execs "ntpdate -u
> -q -p 1 <host IP>". The code in do_net.c is written around the output of
> ntpdate, so chronyc couldn't be used as an alternative without some
> serious munging of the output. So for a base Xymon server deployment,
> ntpdate is generally required. [Actually, Xymon can use sntp instead of
> ntpdate, but this isn't actually relevant to the current situation.]
>
> I seem to recall, on earlier (prior to v6) versions of RHEL, that the
> ntpdate binary used to be part of the ntp (or xntp or xntpd) package. This
> is probably where the dependency on "ntp" came from.
>
> Installing (the package) ntp also brings in ntpdate (as a prerequisite),
> but installing just ntpdate should not install ntp. This seems to be the
> case for RHELv7 and v6. I'd say the spec file should match %{?rhel} between
> 6 and 7 and do "Requires: ntpdate".
>
> J
>
>
> On Fri, 19 Jun 2020 at 10:43, Ralph M <ralphmitchell at gmail.com> wrote:
>
>> I downloaded the source rpm and installed it.  The spec file for building
>> the RPMs contains this:
>>
>>      %if %{without trunk}
>>      %if 0%{?rhel} <= 7
>>      Requires:       ntp
>>      %endif
>>      %endif
>>
>> So, yeah, it builds into the binary RPMs the requirement to pull in ntp.
>> I'm not sure if that can be made into a conditional, to require ntp OR
>> chrony.
>>
>> Ralph Mitchell
>>
>>
>>
>> On Thu, Jun 18, 2020 at 5:05 PM Root, Paul T via Xymon <xymon at xymon.com>
>> wrote:
>>
>>>
>>>
>>>
>>> ---------- Forwarded message ----------
>>> From: "Root, Paul T" <Paul.Root at centurylink.com>
>>> To: "'John Thurston'" <john.thurston at alaska.gov>, "xymon at xymon.com" <
>>> xymon at xymon.com>
>>> Cc:
>>> Bcc:
>>> Date: Thu, 18 Jun 2020 21:04:50 +0000
>>> Subject: RE: [Xymon] Terabithia or compile
>>> That's odd. I did not do that to me.
>>>
>>> -----Original Message-----
>>> From: Xymon <xymon-bounces at xymon.com> On Behalf Of John Thurston
>>> Sent: Thursday, June 18, 2020 2:24 PM
>>> To: xymon at xymon.com
>>> Subject: Re: [Xymon] Terabithia or compile
>>>
>>> On 6/17/2020 4:38 PM, John Horne wrote:
>>> > I used to build from source, but for our CentOS 7 and 8 servers I have
>>> been
>>> > using the Terabithia RPMs with no problems. The downside is that, like
>>> Malcolm
>>> > Hunter mentioned, I have subsequently applied some local patches -
>>> sent to the
>>> > list - so that meant rebuilding the RPMs.
>>>
>>> I'm now looking at the Terabithia package for the first time in years.
>>> My first reaction is, wth?
>>>
>>> Installing the xymon package on my server has disabled chronyd and
>>> installed (but not started) ntpd. why?! If I hadn't read through the
>>> list of packages it was going to grab, and understand the significance
>>> of this one, I'd be going blindly forward with an un-synchronized system
>>> clock.
>>>
>>> Now I wonder how many other of my services it has disabled or replaced.
>>> I feel like I've just walked into a mine field :(
>>>
>>>
>>> --
>>> Do things because you should, not just because you can.
>>>
>>> John Thurston    907-465-8591
>>> John.Thurston at alaska.gov
>>> Department of Administration
>>> State of Alaska
>>> _______________________________________________
>>> Xymon mailing list
>>> Xymon at xymon.com
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>>>
>>> ---------- Forwarded message ----------
>>> From: "Root, Paul T via Xymon" <xymon at xymon.com>
>>> To: "'John Thurston'" <john.thurston at alaska.gov>, "xymon at xymon.com" <
>>> xymon at xymon.com>
>>> Cc:
>>> Bcc:
>>> Date: Thu, 18 Jun 2020 21:04:50 +0000
>>> Subject: Re: [Xymon] Terabithia or compile
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