[Xymon] Terabithia or compile

[Jeremy Laidman]

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
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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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