Prerequisites

The Centreon web interface is compatible with the following list of web broswer:

  • Chrome (latest version)
  • Firefox (latest version)
  • Internet Explorer IE 11 (latest version)
  • Safari (latest version)

Your screen resolution must be at least 1280 x 768.

Softwares

Operating System

If you use Centreon ISO v3.x the operating system will be CentOS v6.

If you prefer to use Red Hat OS you must install it in v6 or v7 version and use rpms from repository.

Else you can use another GNU/Linux operating system but installation will be more complex and realised using software sources.

DBMS

Centreon advises you to use MariaDB instead of MySQL.

Software Version
MariaDB >= 10.1.x
MySQL >= 5.6.x

Dependent software

The following table describes the dependent software:

Logiciel Version
Apache 2.2 & 2.4
GnuTLS >= 2.0
Net-SNMP 5.5
openssl >= 1.0.1e
PHP >= 5.3.0 & < 5.5
Qt >= 4.7.4
RRDtools 1.4.7
zlib 1.2.3

Select type of architecture

The table below gives the prerequisites for the installation of CES 3.x:

Number of Services Estimated number of hosts Number of pollers Central Poller
< 500 50 1 central 1 vCPU / 1 GB  
500 - 2000 50 - 200 1 central 2 vCPU / 2 GB  
2000 - 10000 200 - 1000 1 central + 1 poller 4 vCPU / 4 GB 1 vCPU / 2 GB
10000 - 20000 1000 - 2000 1 central + 1 poller 4 vCPU / 8 GB 2 vCPU / 2 GB
20000 - 50000 2000 - 5000 1 central + 2 pollers 4 vCPU / 8 GB 4 vCPU / 2 GB
50000 - 100000 5000 - 10000 1 central + 3 pollers 4 vCPU / 8 GB 4 vCPU / 2 GB

Note

vCPU must have a frequency arround 3 GHz

Define space disk

The space used for store collected and performance data depends on several criteria:

  • Frequency of controls
  • Number of controls
  • Retention time

The following table provides an idea of the disk space needed for your platform with:

  • Data are collected every 5 minutes
  • The retention period is 6 month
  • Each performance graph have 2 curves
Number of Services /var/lib/mysql /var/lib/centreon
< 500 10 GB 2.5 GB
500 - 2000 42 GB 10 GB
2000 - 10000 210 GB 50 GB
10000 - 20000 420 GB 100 GB
20000 - 50000 1.1 TB 250 GB
50000 - 100000 2,3 TB 1 TB

Define files system

Note

Your system must use LVM to manage files system.

Centreon server

Files system description:

File system Size
swap 1 to 1.5 total size of RAM space
/ at least 20 GB
/var/log at least 10 GB
/var/lib/centreon define in previous chapter
/var/lib/centreon-broker at least 5 GB
/var/cache/centreon/backup at least 10 GB (please daily export the backups and delete the exported data)

MariaDB DBMS

Note

Al least 1GB of non allocated free space must be available on the volum group where /var/lib/mysql is located when you want to use snapshot LVM as backup method.

Files system description:

File system Size
swap 1 to 1.5 total size of RAM space
/ at least 20 GB
/var/log at least 10 GB
/var/lib/mysql define in previous chapter
/var/cache/centreon/backup at least 10 Go (please daily export the backups and delete the exported data)

Monitoring poller

Files system description:

File system Size
swap 1 to 1.5 total size of RAM space
/ at least 20 GB
/var/log at least 10 GB
/var/lib/centreon-broker at least 5 GB
/var/cache/centreon/backup at least 5 Go (please daily export the backups and delete the exported data)

Users and groups

Note

This information are available for Red Hat / CentOS system. Name of users, groups and services can change regarding GNU/Linux distribution.

Description of software and linked users:

Software Service User Comment
Apache httpd apache automatic start
MySQL (MariaDB) mysqld (mysql) mysql automatic start
Centreon centcore centreon automatic start
Centreon centreontrapd centreon automatic start
Centreon Broker cbwd centreon-broker automatic start
Centreon Broker cbd centreon-broker automatic start
Centreon Engine centengine centreon-engine automatic start

Description of optional software and linked users:

Software Service User Comment
Centreon VMware centreon_vmware centreon not installed by default
RRDtool rrdcached rrdcached not enabled and not defined in Centreon by default

Description of groups and linked users:

Group Users
apache nagios,centreon
centreon centreon-engine,centreon-broker,apache
centreon-broker centreon,nagios,centreon-engine,apache
centreon-engine centreon-broker,apache,nagios,centreon

Description of users, umask and home directory:

User umask home
root 0022 /root
apache 0022 /var/www
centreon 0002 /var/spool/centreon
centreon-broker 0002 /var/lib/centreon-broker
centreon-engine 0002 /var/lib/centreon-engine
mysql 0002 /var/lib/mysql