pnp4Nagios Installation configuration Step by step Guide

Pnp4Nagios is an tool which will store performance data into RRD (Round Robin Database) and show in graphical representation. Its easy to understand and represent the values in graphs. Let’s see pnp4nagios installation configuration Step by Step guide.

Perf Data Flow to RRD Database is below

There are three modes of data collection Using pnp4nagios

1. Default mode
2. Bulk Mode
3. Bulk with NPCD mode

Configure Local Yum Repository and Install rrdtool necessary (dependency) 

# yum install rrdtool
# yum install ruby xorg-x11-fonts-Type1

# cd /tmp
# wget https://sourceforge.net/projects/pnp4nagios/files/PNP-0.6/pnp4nagios-0.6.25.tar.gz
# tar -xvf pnp4nagios-0.6.25
# cd pnp4nagios-0.6.25
# ./configure --with-rrdtool=/usr/bin/rrdtool

Note: Do not download pnp-0.4-14 which does not work properly

Download pnp4nagios

# make all
# make fullinstall

Sure that No errors while installing 

Edit the /usr/local/nagios/etc/nagios.cfg file and make sure enabled below config lines for sync mode (Default Mode)

# vi /usr/local/nagios/etc/nagios.cfg

process_performance_data=1

enable_environment_macros=1

host_perfdata_command=process-host-perfdata
service_perfdata_command=process-service-perfdata

# rm -rf /usr/local/pnp4nagios/share/install.php

Now you can see below error

pnp4nagios installation Please check the documentation for information about the following error.

perfdata directory "/usr/local/pnp4nagios/var/perfdata/" is empty. Please check your Nagios config. <a href="http://docs.pnp4nagios.org/faq/3">Read FAQ online</a>

file [line]:

application/models/data.php [109]:

back

Above error will appear when your using sync mode with Nagios Core 4.x version, because pnp4nagios is not compatible with sync mode you have to change in to bulk mode then it work like charm. To Change from sync mode to bulk mode to below steps

# Comment Below Lines
#host_perfdata_command=process-host-perfdata
#service_perfdata_command=process-service-perfdata


# Add Below Lines
# service performance data
#
service_perfdata_file=/usr/local/pnp4nagios/var/service-perfdata
service_perfdata_file_template=DATATYPE::SERVICEPERFDATA\tTIMET::$TIMET$\tHOSTNAME::$HOSTNAME$\tSERVICEDESC::$SERVICEDESC$\tSERVICEPERFDATA::$SERVICEPERFDATA$\tSERVICECHECKCOMMAND::$SERVICECHECKCOMMAND$\tHOSTSTATE::$HOSTSTATE$\tHOSTSTATETYPE::$HOSTSTATETYPE$\tSERVICESTATE::$SERVICESTATE$\tSERVICESTATETYPE::$SERVICESTATETYPE$
service_perfdata_file_mode=a
service_perfdata_file_processing_interval=15
service_perfdata_file_processing_command=process-service-perfdata-file

#
# host performance data starting with Nagios 3.0
#
host_perfdata_file=/usr/local/pnp4nagios/var/host-perfdata
host_perfdata_file_template=DATATYPE::HOSTPERFDATA\tTIMET::$TIMET$\tHOSTNAME::$HOSTNAME$\tHOSTPERFDATA::$HOSTPERFDATA$\tHOSTCHECKCOMMAND::$HOSTCHECKCOMMAND$\tHOSTSTATE::$HOSTSTATE$\tHOSTSTATETYPE::$HOSTSTATETYPE$
host_perfdata_file_mode=a
host_perfdata_file_processing_interval=15
host_perfdata_file_processing_command=process-host-perfdata-file

Check it out after few minutes you can see the data

Verify perfdata path it will create an .rrd and xml files when graphing is working fine

[root@ArkitServer localhost]# ls
Current_Load.rrd Current_Users.rrd _HOST_.rrd HTTP.rrd PING.rrd Root_Partition.rrd SSH.rrd Swap_Usage.rrd Total_Processes.rrd
Current_Load.xml Current_Users.xml _HOST_.xml HTTP.xml PING.xml Root_Partition.xml SSH.xml Swap_Usage.xml Total_Processes.xml
[root@ArkitServer localhost]# pwd
/usr/local/pnp4nagios/var/perfdata/localhost

Verify the pnp4nagios installation status using below command

./verify_pnp_config_v2.pl -m bulk -c /usr/local/nagios/etc/nagios.cfg -p /usr/local/pnp4nagios/etc/

[OK ] PERFDATA template looks good
[OK ] service_perfdata_file_mode is defined
[OK ] service_perfdata_file_mode=a
[OK ] service_perfdata_file_processing_interval is defined
[OK ] service_perfdata_file_processing_interval=15
[OK ] service_perfdata_file_processing_command is defined
[OK ] service_perfdata_file_processing_command=process-service-perfdata-file
[OK ] host_perfdata_file is defined
[OK ] host_perfdata_file=/usr/local/pnp4nagios/var/host-perfdata
[OK ] host_perfdata_file_template is defined
[OK ] host_perfdata_file_template=DATATYPE::HOSTPERFDATA\tTIMET::$TIMET$\tHOSTNAME::$HOSTNAME$\tHOSTPERFDATA::$HOSTPERFDATA$\tHOSTCHECKCOMMAND::$HOSTCHECKCOMMAND$\tHOSTSTATE::$HOSTSTATE$\tHOSTSTATETYPE::$HOSTSTATETYPE$
[OK ] PERFDATA template looks good
[OK ] host_perfdata_file_mode is defined
[OK ] host_perfdata_file_mode=a
[OK ] host_perfdata_file_processing_interval is defined
[OK ] host_perfdata_file_processing_interval=15
[OK ] host_perfdata_file_processing_command is defined
[OK ] host_perfdata_file_processing_command=process-host-perfdata-file
[INFO] Nagios config looks good so far
[INFO] ========== Checking config values ============
service_perfdata_file_processing_command at ./verify_pnp_config_v2.pl line 462.
[OK ] Command process-service-perfdata-file is defined
[OK ] '/bin/mv /usr/local/pnp4nagios/var/service-perfdata /usr/local/pnp4nagios/var/spool/service-perfdata.$TIMET$'

Define Action (Graph) URL so that you can see graph symbol on each and every service. Click on icon will go to appropriate pnp4nagios graph.

define service{
 use local-service ; Name of service template to use
 host_name localhost
 service_description PING
 check_command check_ping!100.0,20%!500.0,60%
 action_url /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=$SERVICEDESC$
 }

Instead of going back to pnp4nagios page you also configure to show graph popups by adding below action_url to each and every host and service

define host {
   name       host-pnp
   action_url /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=_HOST_' class='tips' rel='/pnp4nagios/index.php/popup?host=$HOSTNAME$&srv=_HOST_
   register   0
}

define service {
   name       srv-pnp
   action_url /pnp4nagios/index.php/graph?host=$HOSTNAME$&srv=$SERVICEDESC$' class='tips' rel='/pnp4nagios/index.php/popup?host=$HOSTNAME$&srv=$SERVICEDESC$
   register   0
}

That’s it, pnp4nagios installation configuration completed successfully.

How to Monitor Cronjob Execution Status

Nagiosr Consolidated Report

Systemctl command with all  possible options