[opennms-discuss] Search: "Not Providing service"

Discussion:

Hernandez, Paul

2017-05-11 21:42:18 UTC

Has anyone ever found the need to search for the set of hosts which currently are *not* providing a service? In other words if you have a requisition with a number of services defined (in this case net-snmp ones) and say you populate a large number of hosts into this req from your datacenter. Furthermore you've hosts OS's spanning years of versions and flavors of the OS.

Now you'd like a way to easily find which hosts are not providing a service (for a number of reasons like buggy net-snmp, snmp was never installed, the net-snmp is too old to support the "extend" feature etc etc) via Search.

Search has "Providing service" but what you'd like is to discover which hosts *aren't* providing the service. Yes you could pour through the large list of alerts (consider 1000's of hosts) but would it not be nice to simply have search filter them out quickly?

I hope that I am missing something and there is an easy way to do this. And if not, and others find the idea of use, maybe make this into an enhancement request.

Thanks,
Paul

Dino Yancey

2017-05-11 23:35:17 UTC

Permalink

I don't know of a way to do this with the search webui (and dont have
my onms console in front of me to look), but it's pretty easy to do
this through the notification UI as a workaround. You can build
filters in the notification UI with negated services and verify them,
which would at least give you the list of nodes matching the filter
(i.e. not providing the service)

On Thu, May 11, 2017 at 4:42 PM, Hernandez, Paul

Post by Hernandez, Paul
Has anyone ever found the need to search for the set of hosts which
currently are *not* providing a service? In other words if you have a
requisition with a number of services defined (in this case net-snmp ones)
and say you populate a large number of hosts into this req from your
datacenter. Furthermore you’ve hosts OS’s spanning years of versions and
flavors of the OS.
Now you’d like a way to easily find which hosts are not providing a service
(for a number of reasons like buggy net-snmp, snmp was never installed, the
net-snmp is too old to support the “extend” feature etc etc) via Search.
Search has “Providing service” but what you’d like is to discover which
hosts *aren’t* providing the service. Yes you could pour through the large
list of alerts (consider 1000’s of hosts) but would it not be nice to simply
have search filter them out quickly?
I hope that I am missing something and there is an easy way to do this. And
if not, and others find the idea of use, maybe make this into an enhancement
request.
Thanks,
Paul
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Ken Eshelby

2017-05-15 04:07:29 UTC

Permalink

I would query the db directly if this was infrequent. If it is a regularly
needed, build a Jasper report that can be scheduled periodically.

Hernandez, Paul

2017-06-27 17:54:56 UTC

Permalink

Hi Dino,

Thanks for the reply. Got pulled in another direction and am just returning to this.

" You can build filters in the notification UI with negated services and verify them, which would at least give you the list of nodes matching the filter"

This sounds encouraging Dino. All I see is:

[cid:***@01D2EF33.CF6C0860]

But I think this is for when a service is defined but then lost. In my case I am looking for nodes where the service is not defined for that node in onms.

In the foreign source definition, I define a default set of services that may be available from a hostâs net-snmp. The ones that can provide the bits do so but the rest show only SSH and ICMP which are the only services not written by me referenced in the default services list for the foreign source.

Actually that isnât 100% accurate as I left the checking of SNMP itself in the defaults list.

-Paul

-----Original Message-----
From: Dino Yancey [mailto:dino2gnt+***@gmail.com]
Sent: Thursday, May 11, 2017 4:35 PM
To: General OpenNMS Discussion <opennms-***@lists.sourceforge.net>
Subject: Re: [opennms-discuss] Search: "Not Providing service"

I don't know of a way to do this with the search webui (and dont have my onms console in front of me to look), but it's pretty easy to do this through the notification UI as a workaround. You can build filters in the notification UI with negated services and verify them, which would at least give you the list of nodes matching the filter (i.e. not providing the service)

Post by Hernandez, Paul
Has anyone ever found the need to search for the set of hosts which
currently are *not* providing a service? In other words if you have a
requisition with a number of services defined (in this case net-snmp
ones) and say you populate a large number of hosts into this req from
your datacenter. Furthermore youâve hosts OSâs spanning years of
versions and flavors of the OS.
Now youâd like a way to easily find which hosts are not providing a
service (for a number of reasons like buggy net-snmp, snmp was never
installed, the net-snmp is too old to support the âextendâ feature etc etc) via Search.
Search has âProviding serviceâ but what youâd like is to discover
which hosts *arenât* providing the service. Yes you could pour through
the large list of alerts (consider 1000âs of hosts) but would it not
be nice to simply have search filter them out quickly?
I hope that I am missing something and there is an easy way to do
this. And if not, and others find the idea of use, maybe make this
into an enhancement request.
Thanks,
Paul
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Dino Yancey

2017-06-27 18:18:27 UTC

Permalink

Hi,

Look in the "Add New Event Notification" UI. In that UI, you can negate
services, click "validate rule results" and see a list of nodes matching
that filter, i.e. not providing the service. It's not a report, but if
you're just looking to identify mis-configured nodes, it will at least give
you a list.
[image: Inline image 1]

The filter it displays, in case it isn't legible or the image doesn't go
through, is "(IPADDR IPLIKE *.*.*.*) & (!isSNMP )"

Dino

Post by Hernandez, Paul
Hi Dino,
Thanks for the reply. Got pulled in another direction and am just returning to this.
" You can build filters in the notification UI with negated services and
verify them, which would at least give you the list of nodes matching the
filter"
But I think this is for when a service is defined but then lost. In my
case I am looking for nodes where the service is not defined for that node
in onms.
In the foreign source definition, I define a default set of services that
*may* be available from a hostâs net-snmp. The ones that can provide the
bits do so but the rest show only SSH and ICMP which are the only services
not written by me referenced in the default services list for the foreign
source.
Actually that isnât 100% accurate as I left the checking of SNMP itself in
the defaults list.
-Paul
-----Original Message-----
Sent: Thursday, May 11, 2017 4:35 PM
Subject: Re: [opennms-discuss] Search: "Not Providing service"
I don't know of a way to do this with the search webui (and dont have my
onms console in front of me to look), but it's pretty easy to do this
through the notification UI as a workaround. You can build filters in the
notification UI with negated services and verify them, which would at least
give you the list of nodes matching the filter (i.e. not providing the
service)
On Thu, May 11, 2017 at 4:42 PM, Hernandez, Paul <

etc) via Search.

Post by Hernandez, Paul
Search has âProviding serviceâ but what youâd like is to discover
which hosts *arenât* providing the service. Yes you could pour through
the large list of alerts (consider 1000âs of hosts) but would it not
be nice to simply have search filter them out quickly?
I hope that I am missing something and there is an easy way to do
this. And if not, and others find the idea of use, maybe make this
into an enhancement request.
Thanks,
Paul
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Hernandez, Paul

2017-06-27 20:01:47 UTC

Permalink

Dino,

I think I may have hit a bug because via this approach, the validate rules results can say that the service is missing, yet when you search the IP address and look, this service is actually there:

[cid:***@01D2EF45.06E0E6B0]

But if I search that IP I see:

[cid:***@01D2EF45.87C237C0]

Bug?

-Paul

From: Dino Yancey [mailto:dino2gnt+***@gmail.com]
Sent: Tuesday, June 27, 2017 11:18 AM
To: General OpenNMS Discussion <opennms-***@lists.sourceforge.net>
Subject: Re: [opennms-discuss] Search: "Not Providing service"

Hi,
Look in the "Add New Event Notification" UI. In that UI, you can negate services, click "validate rule results" and see a list of nodes matching that filter, i.e. not providing the service. It's not a report, but if you're just looking to identify mis-configured nodes, it will at least give you a list.
[Inline image 1]
The filter it displays, in case it isn't legible or the image doesn't go through, is "(IPADDR IPLIKE *.*.*.*) & (!isSNMP )"
Dino

On Tue, Jun 27, 2017 at 12:54 PM, Hernandez, Paul <***@mentor.com<mailto:***@mentor.com>> wrote:

Hi Dino,

Thanks for the reply. Got pulled in another direction and am just returning to this.

" You can build filters in the notification UI with negated services and verify them, which would at least give you the list of nodes matching the filter"

This sounds encouraging Dino. All I see is:

[cid:***@01D2EF45.06E0E6B0]

But I think this is for when a service is defined but then lost. In my case I am looking for nodes where the service is not defined for that node in onms.

In the foreign source definition, I define a default set of services that may be available from a hostâs net-snmp. The ones that can provide the bits do so but the rest show only SSH and ICMP which are the only services not written by me referenced in the default services list for the foreign source.

Actually that isnât 100% accurate as I left the checking of SNMP itself in the defaults list.

-Paul

-----Original Message-----
From: Dino Yancey [mailto:dino2gnt+***@gmail.com<mailto:dino2gnt%***@gmail.com>]
Sent: Thursday, May 11, 2017 4:35 PM
To: General OpenNMS Discussion <opennms-***@lists.sourceforge.net<mailto:opennms-***@lists.sourceforge.net>>
Subject: Re: [opennms-discuss] Search: "Not Providing service"

I don't know of a way to do this with the search webui (and dont have my onms console in front of me to look), but it's pretty easy to do this through the notification UI as a workaround. You can build filters in the notification UI with negated services and verify them, which would at least give you the list of nodes matching the filter (i.e. not providing the service)

Post by Hernandez, Paul
Has anyone ever found the need to search for the set of hosts which
currently are *not* providing a service? In other words if you have a
requisition with a number of services defined (in this case net-snmp
ones) and say you populate a large number of hosts into this req from
your datacenter. Furthermore youâve hosts OSâs spanning years of
versions and flavors of the OS.
Now youâd like a way to easily find which hosts are not providing a
service (for a number of reasons like buggy net-snmp, snmp was never
installed, the net-snmp is too old to support the âextendâ feature etc etc) via Search.
Search has âProviding serviceâ but what youâd like is to discover
which hosts *arenât* providing the service. Yes you could pour through
the large list of alerts (consider 1000âs of hosts) but would it not
be nice to simply have search filter them out quickly?
I hope that I am missing something and there is an easy way to do
this. And if not, and others find the idea of use, maybe make this
into an enhancement request.
Thanks,
Paul
----------------------------------------------------------------------
-------- Check out the vibrant tech community on one of the world's
most engaging tech sites, Slashdot.org! http://sdm.link/slashdot
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