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Version: ⭐ 22.04

Prerequisites

The Centreon web interface is compatible with the following web browsers:

  • Google Chrome (latest version at the time of Centreon software release and above). Please visit the Google Chrome FAQ for a description of the Chrome support policy.
  • Mozilla Firefox (latest version at the time of Centreon software release and above). Please visit the Mozilla FAQ for a description of the Firefox support policy.
  • Apple Safari (latest version at the time of Centreon software release and above)
  • Microsoft Edge Chromium (latest version at the time of Centreon software release and above)

If an update to those supported browsers was to cause an incompatibility, Centreon would work on a fix in the shortest possible time (for supported Centreon versions). Though other browsers may work, Centreon will not attempt to resolve problems with browsers other than those listed above.

Your screen resolution must be at least 1280 x 768.

Software​

Operating Systems​

Centreon supports the following operating systems: CentOS 7, AlmaLinux 8, RedHat/OracleLinux 7 or 8, Debian 11.

VersionInstallation mode
CentOS 7RPM packages, virtual machine , sources
Alma/RHEL/Oracle LinuxRPM packages, sources
Debian 11DEB packages

Open Source users, without Support contract, can use another GNU/Linux operating system. This will require installing the platform from source files and therefore be more complex. Bear in mind that IT Edition and Business Edition modules do not work yet on unsupported distributions.

Only 64-bit operating systems (x86_64) are supported.

DBMS​

Centreon supports MariaDB. You can use another DBMS based on MySQL, but it will only be supported by the community.

SoftwareVersion
MariaDB10.5.x

Software dependencies​

The following table describes the software dependencies:

SoftwareVersion
Apache2.4
GnuTLS>= 2.0
Net-SNMP5.7
openssl>= 1.0.1k
PHP8.0
RRDtools1.4.7
zlib1.2.3

Centreon Server Requirements​

Centreon offers a workbook to calculate the size of your platform.

The table below describes requirements for installing Centreon:

Number of ServicesEstimated number of hostsNumber of pollersCentralPoller
< 500501 central1 vCPU / 1 GB
500 - 200050 - 2001 central2 vCPU / 2 GB
2000 - 7000200 - 7001 central + 1 poller4 vCPU / 4 GB1 vCPU / 4 GB
7000 - 14000700 - 14001 central + 1 poller4 vCPU / 8 GB2 vCPU / 4 GB
14000 - 210001400 - 21001 central + 2 pollers4 vCPU / 8 GB2 vCPU / 4 GB
21000 - 280002100 - 28001 central + 3 pollers4 vCPU / 8 GB2 vCPU / 4 GB
...............

A poller can monitor around 7000 active services. vCPU must have a frequency of approximately 3 GHz. The number of vCPU depends of the complexity of checks. If you use connectors or perform a large number of system/third-party binary calls, you should add more vCPU.

Define disk space​

Centreon offers a workbook to calculate the size of your platform.

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

  • Frequency of controls
  • Number of controls
  • Retention time

The following table provides an estimate of disk space required for your platform assuming:

  • Data is collected every 5 minutes.
  • The retention period is 6 months.
  • Each performance graph has 2 curves.
Number of Services/var/lib/mysql (in GB)/var/lib/centreon (in GB)
500102.5
20004210
10 0009327
20 00018654
50 000465135
100 000930270
.........

Define the file system​

Your system must use LVM to manage the file system.

Centreon server​

Files system description:

File systemSize
swap1 to 1.5 total size of RAM space
/at least 20 GB
/var/logat least 10 GB
/var/lib/centreondefined in a previous chapter
/var/lib/centreon-brokerat least 5 GB
/var/cache/centreon/backupat least 10 GB (export the backups and delete the exported data daily)

MariaDB DBMS​

At least 1 GB of non-allocated free space must be available for the volume group containing /var/lib/mysql, if you wish to use snapshot LVM as a backup method.

Files system description:

File systemSize
swap1 to 1.5 total size of RAM space
/at least 20 GB
/var/logat least 10 GB
/var/lib/mysqldefined in a previous chapter
/var/cache/centreon/backupat least 10 Go (export the backups and delete the exported data daily)

Monitoring poller​

Files system description:

File systemSize
swap1 to 1.5 total size of RAM space
/at least 20 GB
/var/logat least 10 GB
/var/lib/centreon-brokerat least 5 GB
/var/cache/centreon/backupat least 5 Go (export the backups and delete the exported data daily)

Users and groups​

This information pertains to the Red Hat / CentOS system. Names of users, groups and services can change according to the GNU/Linux distribution.

Description of software and linked users:

SoftwareServiceUserComment
Apachehttpdapacheautomatic start
PHP-FPMphp-fpmapacheautomatic start
MariaDBmariadbmysqlautomatic start
Centreoncentreontrapdcentreonautomatic start
Centreon Brokercbwdcentreon-brokerautomatic start
Centreon Brokercbdcentreon-brokerautomatic start
Centreon Enginecentenginecentreon-engineautomatic start
Centreon Gorgonegorgonedcentreon-gorgoneautomatic start

Description of optional software and linked users:

SoftwareServiceUserComment
Centreon VMwarecentreon_vmwarecentreonnot installed by default
RRDtoolrrdcachedrrdcachednot enabled and not defined in Centreon by default

Description of groups and linked users for Centreon Open Source and IT Edition:

GroupUsers
apachenagios,centreon,centreon-gorgone
centreoncentreon-engine,centreon-broker,apache,centreon-gorgone
centreon-brokercentreon,nagios,centreon-engine,apache,centreon-gorgone
centreon-enginecentreon-broker,apache,nagios,centreon,centreon-gorgone
centreon-gorgonecentreon,apache,centreon-gorgone,centreon-engine,centreon-broker
rrdcachedcentreon-broker,apache

Description of groups and linked users for Centreon Business Edition:

GroupUsers
apachenagios,centreonBI,centreon,centreon-gorgone
centreoncentreon-engine,centreon-broker,apache,rrdcached,centreonBI,centreon-gorgone
centreon-brokercentreon,nagios,centreon-engine,apache,rrdcached,centreon-gorgone
centreon-enginecentreon-broker,apache,nagios,centreon,centreon-gorgone
centreon-gorgonecentreon,apache,centreon-gorgone,centreon-engine,centreon-broker
centreonBIapache
centreon-map
mysqlcentreonBI

Description of users, umask and home directory for Centreon Open Source and IT Edition:

UserumaskhomeShell
root0022/root/bin/bash
apache0022/var/www/sbin/nologin
centreon0002/var/spool/centreon/bin/bash
centreon-broker0002/var/lib/centreon-broker/bin/bash
centreon-engine0002/var/lib/centreon-engine/bin/bash
centreon-gorgone0002/var/lib/centreon-gorgone/bin/bash
mysql0002/var/lib/mysql/sbin/nologin
rrdcached0002/var/rrdtool/rrdcached/bin/bash

Description of users, umask and home directory for Centreon Business Edition:

UserumaskhomeShell
root0022/root/bin/bash
apache0022/var/www/sbin/nologin
centreon0002/var/spool/centreon/bin/bash
centreonBI0002/home/centreonBI/bin/bash
centreon-agent0002/var/lib/centreon-agent/bin/bash
centreon-broker0002/var/lib/centreon-broker/bin/bash
centreon-engine0002/var/lib/centreon-engine/bin/bash
centreon-gorgone0002/var/lib/centreon-gorgone/bin/bash
centreon-map0002/home/centreon-map/bin/bash
mysql0002/var/lib/mysql/sbin/nologin
rrdcached0002/var/rrdtool/rrdcached/bin/bash