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List: opennms-discuss
Subject: Re: [opennms-discuss] Directed provisioning question
From: Cyrille Bollu <cyrille.bollu () gmail ! com>
Date: 2016-09-29 13:57:51
Message-ID: CAAymSK5_=6NWjXDcy1AsTdGtGu9SaGDZfWu0QoO34bn+QKEang () mail ! gmail ! com
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Hey Marcel,
Cool, I'll try that.
So, with my help on the chat, it seems we're even with user support for
today :-)
Thanks for the help
OPENNMS FOREVER!!!!!!
Cyrille
2016-09-29 15:02 GMT+02:00 Fuhrmann, Marcel <Marcel.Fuhrmann@lux.ag>:
> Hey Cyrille,
>
> What shall I do? >> run circles while screaming OPENNMS FOREVER! ;-)
>
> Are detectors needed at all? >> Only if you want ONMS to detect services
> automatically
>
> Can I just delete all the detectors in my requisition and still have
> OpenNMS monitoring the set of services I explicitly defined for my
> requistion's nodes? >> Yes!
>
> Greetings from Germany!
>
> Marcel
>
>
>
>
>
> *Von:* Cyrille Bollu [mailto:cyrille.bollu@gmail.com]
> *Gesendet:* Donnerstag, 29. September 2016 13:43
> *An:* General OpenNMS Discussion
> *Betreff:* Re: [opennms-discuss] Directed provisioning question
>
>
>
> Hi Ronny,
>
> OK, I almost get it.
>
> However, I understand 2 contradictory recommendations:
>
> - 1st recommandation: "deleting all the detectors in the requisition"
> - 2nd recommandation: "[when you have to use detectors] using a
> requisition for devices with a similar monitoring profile"
>
> What shall I do? Are detectors needed at all? Can I just delete all the
> detectors in my requisition and still have OpenNMS monitoring the set of
> services I explicitly defined for my requistion's nodes? If that's possible
> I would rather go for this solution.
>
> Thanks for your help and hope you're going well,
>
> Cyrille
>
>
>
> 2016-09-29 12:02 GMT+02:00 Ronny Trommer <ronny@opennms.org>:
>
> Hi Cyrille,
>
> if you create a new requisition, a large set of detectors will be created
> by default from the "Default Foreign Source". First thing I do is deleting
> all the detectors in the requisition and just provide the IP addresses and
> services I want to monitor.
>
> Beside using multiple requisitions. A requisition in OpenNMS gives you the
> following parts:
>
> * Modelling a Node with IP interfaces and services
> * Policies for categories, SNMP Interfaces, IP Interfaces
> * Set of service detectors
>
> Just in general: A best practice to be most efficient especially when you
> have to use detectors is using a requisition for devices with a similar
> monitoring profile. For example having a requisition for Mail-Server and
> for LDAP-Server. You can define a minimal set of detectors which need to be
> applied on the nodes in the requisition. So you don't have a lot of
> detectors trying find LDAP service on a Router interface. It can also help
> preventing complicated policies.
>
> tl;dr
> In general I'm personally not a friend of service detectors in Monitoring.
> You add some moving parts which you can't easily control especially when
> you work with a group of people in monitoring and someone gets paged in the
> middle of the night about a detected service who has no idea what this
> means for the company and how you should react on it.
>
> In hope this helps at least a little
>
> Ronny
>
>
> > On Sep 29, 2016, at 11:22 AM, Cyrille Bollu <cyrille.bollu@gmail.com>
> wrote:
> >
> > Hello dears,
> >
> > I was under the impressions that by using directed provisioning I would
> be able to specify the full set of IP services that OpenNMS would monitor.
> >
> > But, now, I see OpenNMS is able to do a service scan upon provisioning
> and OpenNMS doing node scans every day. So, OpenNMS still detects and
> monitor services that I don't want to monitor.
> >
> > Worse, OpenNMS spends its time and resources waiting for timeouts when
> scanning for services that don't exist; For example, I've some Radius and
> LDAP services running on 2 or 3 nodes, and, with my config, OpenNMS tries
> to detect these services on all my 198 nodes.
> >
> > Is it possible to avoid the service scan phase, and node scans, when
> using directed provisioning?
> >
> > Or, is the solution to create a specific requisition for those 2-3
> servers running the Radius and LDAP services?
> >
> > Regards,
> >
> > Cyrille
> >
> >
> >
> >
> >
> >
> >
>
> > ------------------------------------------------------------
> ------------------
> > _______________________________________________
> > Please read the OpenNMS Mailing List FAQ:
> > http://www.opennms.org/index.php/Mailing_List_FAQ
> >
> > opennms-discuss mailing list
> >
> > To *unsubscribe* or change your subscription options, see the bottom of
> this page:
> > https://lists.sourceforge.net/lists/listinfo/opennms-discuss
>
>
> ------------------------------------------------------------
> ------------------
> _______________________________________________
> Please read the OpenNMS Mailing List FAQ:
> http://www.opennms.org/index.php/Mailing_List_FAQ
>
> opennms-discuss mailing list
>
> To *unsubscribe* or change your subscription options, see the bottom of
> this page:
> https://lists.sourceforge.net/lists/listinfo/opennms-discuss
>
>
>
> ------------------------------------------------------------
> ------------------
>
> _______________________________________________
> Please read the OpenNMS Mailing List FAQ:
> http://www.opennms.org/index.php/Mailing_List_FAQ
>
> opennms-discuss mailing list
>
> To *unsubscribe* or change your subscription options, see the bottom of
> this page:
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>
[Attachment #5 (text/html)]
<div dir="ltr"><div><div><div><div><div>Hey Marcel,<br><br></div>Cool, I'll try \
that.<br><br></div>So, with my help on the chat, it seems we're even with user \
support for today :-)<br><br></div>Thanks for the help<br><br></div>OPENNMS \
FOREVER!!!!!!<br><br></div>Cyrille<br></div><div class="gmail_extra"><br><div \
class="gmail_quote">2016-09-29 15:02 GMT+02:00 Fuhrmann, Marcel <span \
dir="ltr"><<a href="mailto:Marcel.Fuhrmann@lux.ag" \
target="_blank">Marcel.Fuhrmann@lux.ag</a>></span>:<br><blockquote \
class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex">
<div link="blue" vlink="purple" lang="DE">
<div>
<p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Hey \
Cyrille,<u></u><u></u></span></p> <p><span lang="EN-US">What shall I do? >> run \
circles while screaming OPENNMS FOREVER! ;-)<u></u><u></u></span></p> <p><span \
lang="EN-US">Are detectors needed at all? >> Only if you want ONMS to detect \
services automatically<u></u><u></u></span></p> <p><span lang="EN-US">Can I just \
delete all the detectors in my requisition and still have OpenNMS monitoring the set \
of services I explicitly defined for my requistion's nodes? >> \
Yes!<u></u><u></u></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d" \
lang="EN-US">Greetings from Germany!<u></u><u></u></span></p> <p \
class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d" \
lang="EN-US">Marcel<u></u><u></u></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d" \
lang="EN-US"><u></u> <u></u></span></p> <p class="MsoNormal"><span \
style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d" \
lang="EN-US"><u></u> <u></u></span></p> <p class="MsoNormal"><b><span \
style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">Von:</span></b><span \
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> \
Cyrille Bollu [mailto:<a href="mailto:cyrille.bollu@gmail.com" \
target="_blank">cyrille.bollu@gmail.<wbr>com</a>] <br>
<b>Gesendet:</b> Donnerstag, 29. September 2016 13:43<br>
<b>An:</b> General OpenNMS Discussion<br>
<b>Betreff:</b> Re: [opennms-discuss] Directed provisioning \
question<u></u><u></u></span></p><div><div class="h5"> <p class="MsoNormal"><u></u> \
<u></u></p> <div>
<div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt">Hi Ronny,<u></u><u></u></p>
</div>
<p class="MsoNormal" style="margin-bottom:12.0pt">OK, I almost get \
it.<u></u><u></u></p> </div>
<p class="MsoNormal">However, I understand 2 contradictory \
recommendations:<u></u><u></u></p> <ul type="disc">
<li class="MsoNormal">
1st recommandation: "deleting all the detectors in the \
requisition"<u></u><u></u></li><li class="MsoNormal"> 2nd recommandation: \
"[when you have to use detectors] using a requisition for devices with a similar \
monitoring profile"<u></u><u></u></li></ul> <p>What shall I do? Are detectors \
needed at all? Can I just delete all the detectors in my requisition and still have \
OpenNMS monitoring the set of services I explicitly defined for my requistion's \
nodes? If that's possible I would rather go for this solution.<u></u><u></u></p> \
<p>Thanks for your help and hope you're going well,<u></u><u></u></p> \
<p>Cyrille<u></u><u></u></p> </div>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
<div>
<p class="MsoNormal">2016-09-29 12:02 GMT+02:00 Ronny Trommer <<a \
href="mailto:ronny@opennms.org" \
target="_blank">ronny@opennms.org</a>>:<u></u><u></u></p> <p class="MsoNormal">Hi \
Cyrille,<br> <br>
if you create a new requisition, a large set of detectors will be created by default \
from the "Default Foreign Source". First thing I do is deleting all the detectors in \
the requisition and just provide the IP addresses and services I want to monitor.<br> \
<br> Beside using multiple requisitions. A requisition in OpenNMS gives you the \
following parts:<br> <br>
* Modelling a Node with IP interfaces and services<br>
* Policies for categories, SNMP Interfaces, IP Interfaces<br>
* Set of service detectors<br>
<br>
Just in general: A best practice to be most efficient especially when you have to use \
detectors is using a requisition for devices with a similar monitoring profile. For \
example having a requisition for Mail-Server and for LDAP-Server. You can define a \
minimal set of detectors which need to be applied on the nodes in the requisition. \
So you don't have a lot of detectors trying find LDAP service on a Router interface. \
It can also help preventing complicated policies.<br> <br>
tl;dr<br>
In general I'm personally not a friend of service detectors in Monitoring. You add \
some moving parts which you can't easily control especially when you work with a \
group of people in monitoring and someone gets paged in the middle of the night about \
a detected service who has no idea what this means for the company and how you \
should react on it.<br> <br>
In hope this helps at least a little<br>
<br>
Ronny<u></u><u></u></p>
<div>
<div>
<p class="MsoNormal"><br>
> On Sep 29, 2016, at 11:22 AM, Cyrille Bollu <<a \
href="mailto:cyrille.bollu@gmail.com" target="_blank">cyrille.bollu@gmail.com</a>> \
wrote:<br> ><br>
> Hello dears,<br>
><br>
> I was under the impressions that by using directed provisioning I would be able \
to specify the full set of IP services that OpenNMS would monitor.<br> ><br>
> But, now, I see OpenNMS is able to do a service scan upon provisioning and \
OpenNMS doing node scans every day. So, OpenNMS still detects and monitor services \
that I don't want to monitor.<br> ><br>
> Worse, OpenNMS spends its time and resources waiting for timeouts when scanning \
for services that don't exist; For example, I've some Radius and LDAP \
services running on 2 or 3 nodes, and, with my config, OpenNMS tries to detect these \
services on all my 198 nodes.<br>
><br>
> Is it possible to avoid the service scan phase, and node scans, when using \
directed provisioning?<br> ><br>
> Or, is the solution to create a specific requisition for those 2-3 servers \
running the Radius and LDAP services?<br> ><br>
> Regards,<br>
><br>
> Cyrille<br>
><br>
><br>
><br>
><br>
><br>
><br>
><u></u><u></u></p>
</div>
</div>
<p class="MsoNormal">> \
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> ______________________________<wbr>_________________<br>
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><br> > opennms-discuss mailing list<br>
><br>
> To *unsubscribe* or change your subscription options, see the bottom of this \
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<br>
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<p class="MsoNormal"><u></u> <u></u></p>
</div>
</div></div></div>
</div>
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