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http://docs.nagvis.org/1.8/en_US/index.html
https://documentation.centreon.com/docs/centreon-nagvis/en/latest/Install/Nagvis_backend.html
http://www.sugarbug.web4me.fr/atelier/techniques/ihmweb/cartographie_supervision/centreon-nagvis/
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1. yum -y install centreon-nagvis graphviz git
2.wget http://www.nagvis.org/share/nagvis- 1.7.10.tar.gz
3.tar xzvf nagvis-1.7.10.tar.gz && cd nagvis-1.7.10
./install.sh
****Please enter the path to the nagios base directory [/usr/local/nagios]: /usr/share/centreon-engine/****
4.git clone https://github.com/centreon/centreon-nagvis-backend
cp GlobalBackendcentreonbroker.php /usr/local/nagvis/share/server/core/classes/
chown apache:apache /usr/local/nagvis/share/server/core/classes/GlobalBackendcentreonbroker.php
chmod 664 /usr/local/nagvis/share/server/core/classes/GlobalBackendcentreonbroker.php
5.add the following section at the end of the file “/usr/share/nagvis/etc/nagvis.ini.php” with the information for the database:
[backend_centreonbroker_1]
backendtype=”centreonbroker”
dbhost=”localhost”
dbport=3306
dbname=”centreon_storage”
dbuser=”centreon”
dbpass=”centreon”