rrd gaps

Gerd Mueller gmueller at netways.de
Thu Jan 3 10:52:44 CET 2008
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Hi,

the old NagiosGrapher interfaces (network/pipe) can cause huge
latency :-(. Thanks to a patch we got there is a new interface type
"file". The main advantages of this new interface are:
* no gaps any more
* no latency caused by NagiosGrapher
* restarting NagiosGrapher does not cause any gaps

I am sorry but the documentation totally lacks this interface. But below
is all you need.

Cheers,

Gerd




 
ngraph.ncfg:

    interface               file
    perffile_path           /dev/shm

nagios.cfg:

    process_performance_data=1
    service_perfdata_file=/dev//shm/service-perfdata
    service_perfdata_file_template=$HOSTNAME$\t$SERVICEDESC$\t
$SERVICEOUTPUT$\t$SERVICEPERFDATA$\t$TIMET$
    service_perfdata_file_mode=a
    service_perfdata_file_processing_interval=60

service_perfdata_file_processing_command=process-service-perfdata-file


commands.cfg:
define command{
        command_name process-service-perfdata-file
        command_line
mv /dev/shm/service-perfdata /dev/shm/service-perfdata.$TIMET$
        }



Am Mittwoch, den 02.01.2008, 13:29 -0500 schrieb Palle L Jensen:
> Lars and Gerd,
> 
> I am having a similar problem with rrd gaps.
> It was doing fine until I added 3 more hosts and 8 more services and then
> suddenly I get the rrd gaps, some graphs are even blank.
> 
> My latency are as below (they seem pretty high compared to yours?):
> 
> # nagiostats | grep -i latency
> Active Service Latency:               6.804 / 330.675 / 238.562 sec
> Active Host Latency:                  0.000 / 0.000 / 0.000 sec
> 
> 
> nagiostats | grep -i total
> Used/High/Total Command Buffers:      0 / 8 / 4096
> Used/High/Total Check Result Buffers: 85 / 106 / 4096
> Total Services:                       106
> Total Service State Change:           0.000 / 0.000 / 0.000 %
> Total Hosts:                          36
> Total Host State Change:              0.000 / 0.000 / 0.000 %
> 
> 
> I also use the rpm package from linadd.org.
> nagios-2.9-1.i586.rpm,
> nagios-web-2.9-1.i586.rpm,
> nagios-plugins-1.4.9-1.i586.rpm,
> nagios-plugins-extras-1.4.9-1.i586.rpm
> nagios-graph-1.6.1-rc3.i586.rpm
> 
> If you find any solution for this I would be more than happy :)
> 
> Thanks,
> - Palle
> 
> -----Original Message-----
> From: nagios-users-bounces at lists.sourceforge.net
> [mailto:nagios-users-bounces at lists.sourceforge.net] On Behalf Of Lars
> Stavholm
> Sent: Wednesday, January 02, 2008 7:06 AM
> To: Mad Unix
> Cc: nagios-users at lists.sourceforge.net
> Subject: Re: [Nagios-users] rrd gaps
> 
> Mad Unix wrote:
> > Can you tell me how did you implement graph beside the nagios
> 
> Let's keep this on the list, shall we?
> 
> I used rpm packages from linadd.org.
> 
> > Thanks
> 
> You're welcome.
> /L
> 
> > On Jan 2, 2008 12:01 PM, Lars Stavholm <stava at telcotec.se> wrote:
> >> Gerd Mueller wrote:
> >>> Hi Lars,
> >>>
> >>> which interface are you using? And how big is your nagios' latency?
> >> I don't quite understand the first question there?
> >> We use the Nagios web interface with the nuvola theme?
> >>
> >> We have only a few hosts and around a hundred service checks,
> >> i.e. no heavy load here:
> >>
> >> # nagiostats | grep -i latency
> >> Active Service Latency:                 0.000 / 0.335 / 0.135 sec
> >> Passive Service Latency:                0.000 / 0.000 / 0.000 sec
> >> Active Host Latency:                    0.000 / 0.284 / 0.152 sec
> >> Passive Host Latency:                   0.000 / 0.000 / 0.000 sec
> >>
> >> # nagiostats | grep -i total
> >> Used/High/Total Command Buffers:        0 / 1 / 4096
> >> Total Services:                         114
> >> Total Service State Change:             0.000 / 12.110 / 0.106 %
> >> Total Hosts:                            19
> >> Total Host State Change:                0.000 / 0.000 / 0.000 %
> >>
> >> /L
> >>
> >>
> >>> Am Mittwoch, den 02.01.2008, 10:13 +0100 schrieb Lars Stavholm:
> >>>> Hi All,
> >>>>
> >>>> we use latest nagios-3 and latest NagiosGrapher-1.6.1-rc5.
> >>>>
> >>>> It all works very well, except for one annoying problem:
> >>>> I get gaps in the graphs, and I don't understand why.
> >>>>
> >>>> Any ideas appreciated, sample graph attached.
> >>>>
> >>>> R
> >>>> /Lars
> >>>>
> -------------------------------------------------------------------------
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> >>
> >>
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> >>
> > 
> > 
> > 
> 
> 
> 
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> 
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-- 
Gerd Mueller                  
Senior Consultant

NETWAYS GmbH | Deutschherrnstr. 47a | D-90429 Nürnberg 
Tel: +49 911 92885-0 | Fax: +49 911 92885-33 
GF: Julian Hein | AG Nürnberg HRB18461 
 
http://www.netways.de | gmueller at netways.de 

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