Prerequisites

This topic gives you broad guidelines to determine the size of your platform.

Architecture

First, use the guidelines described on the Architectures page to determine the type of architecture you need.

Characteristics of the servers

• The more services you monitor, the more CPU you need.

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

  • Frequency of checks
  • Number of checks
  • Retention time
  • Average number of metrics per service

• The number of users simultaneously connected to the interface of the central/remote server has an impact on performance. If a large number of users will have to log in to the Centreon interface at the same time, you will need more CPU.

The following data is meant for:

• An average of 10 services per host.
• Data is collected every 5 minutes.
• The retention period is 12 months.
• Each service has on average 8 metrics.

You need to adapt the following figures to your actual values. Bear in mind that you may need to adjust the size of your platform as you add more hosts over time.

Up to 500 hosts

Standalone central server:

Element	Value
CPU	4 vCPU
RAM	4 GB

This is how your central server should be partitioned:

Volume group (LVM)	File system	Description	Size
	/boot	boot images	1 GB
vg_root	/	system root	20 GB
vg_root	swap	swap	4 GB
vg_root	/var/log	contains all log files	10 GB
vg_data	/var/lib/centreon	contains mostly RRD files	34 GB
vg_data	/var/lib/centreon-broker	contains broker retention files	5 GB
vg_data	/var/lib/centreon-engine	contains engine retention files	5 GB
vg_data	/var/lib/mysql (only if the DBMS is on the central server)	database	106 GB
vg_data	/var/cache/centreon/backup	backup directory	10 GB If you perform backups, use the following characteristics: size of the /var/lib/mysql partition * 0,6 this size is meant for 1 full backup and 6 partial ones this is only an estimate, size should be checked manually
vg_data		Free space (unallocated)	5 GB

Your system must use LVM to manage the file system.

In some cases, you may want to set up a distributed architecture, even for fewer than 500 hosts. The poller will have the same characteristics as for up to 1,000 hosts.

Up to 1,000 hosts

Distributed architecture:

• 1 central server
• 1 poller for every 500 hosts

Central server

Element	Value
CPU	4 vCPU
RAM	8 GB

This is how your central server should be partitioned:

Volume group (LVM)	File system	Description	Size
	/boot	boot images	1 GB
vg_root	/	system root	20 GB
vg_root	swap	swap	4 GB
vg_root	/var/log	contains all log files	10 GB
vg_data	/var/lib/centreon	contains mostly RRD files	68 GB
vg_data	/var/lib/centreon-broker	contains retention files	10 GB
vg_data	/var/lib/centreon-engine		5 GB
vg_data	/var/lib/mysql (only if the DBMS is on the central server)	database	213 GB
vg_data	/var/cache/centreon/backup	backup directory	10 GB If you perform backups, use the following characteristics: size of the /var/lib/mysql partition * 0,6 this size is meant for 1 full backup and 6 partial ones this is only an estimate, size should be checked manually
vg_data		Free space (unallocated)	5 GB

Your system must use LVM to manage the file system.

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.

Pollers

• To handle testing or small environments (up to 2000 services with checks every 5 minutes, or up to 500 services with checks every minute):

Element	Value
CPU (logical core at 3 GHz)	2 vCPU
RAM	2 GB
HDD	40 GB

• To handle production environments (up to 7000 services with checks every 5 minutes):

Element	Value
CPU (logical core at 3 GHz)	4 vCPU
RAM	4 GB
HDD	40 GB

This is how the pollers should be partitioned:

Volume group (LVM)	File system	Description	Size
	/boot	boot images	1 GB
vg_root	/	system root	20 GB
vg_root	swap	swap	4 GB
vg_root	/var/log	contains all log files	10 GB
vg_data	/var/lib/centreon-engine		5 GB

Your system must use LVM to manage the file system.

The number of vCPU depends of the complexity of the checks. If you use connectors or perform a large number of system/third-party binary calls, you should add more vCPU.

Up to 2,500 hosts

Distributed architecture:

• 1 central server
• 1 poller for every 500 hosts

Central server

Element	Value
CPU	4 vCPU
RAM	8 GB

This is how your central server should be partitioned:

Volume group (LVM)	File system	Description	Size
	/boot	boot images	1 GB
vg_root	/	system root	20 GB
vg_root	swap	swap	4 GB
vg_root	/var/log	contains all log files	10 GB
vg_data	/var/lib/centreon	contains mostly RRD files	169 GB
vg_data	/var/lib/centreon-broker	contains retention files	25 GB
vg_data	/var/lib/centreon-engine		5 GB
vg_data	/var/lib/mysql (only if the DBMS is on the central server)	database	538 GB
vg_data	/var/cache/centreon/backup	backup directory	10 GB If you perform backups, use the following characteristics: size of the /var/lib/mysql partition * 0,6 this size is meant for 1 full backup and 6 partial ones this is only an estimate, size should be checked manually
vg_data		Free space (unallocated)	5 GB

Your system must use LVM to manage the file system.

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.

Pollers

• To handle testing or small environments (up to 2000 services with checks every 5 minutes, or up to 500 services with checks every minute):

Element	Value
CPU (logical core at 3 GHz)	2 vCPU
RAM	2 GB
HDD	40 GB

• To handle production environments (up to 7000 services with checks every 5 minutes):

Element	Value
CPU (logical core at 3 GHz)	4 vCPU
RAM	4 GB
HDD	40 GB

This is how the pollers should be partitioned:

Volume group (LVM)	File system	Description	Size
	/boot	boot images	1 GB
vg_root	/	system root	20 GB
vg_root	swap	swap	4 GB
vg_root	/var/log	contains all log files	10 GB
vg_data	/var/lib/centreon-engine		5 GB

Your system must use LVM to manage the file system.

The number of vCPU depends of the complexity of the checks. If you use connectors or perform a large number of system/third-party binary calls, you should add more vCPU.

Up to 5,000 hosts

Distributed architecture:

• 1 central server without a database
• 1 database server
• 1 poller for every 500 hosts

Central server

Element	Value
CPU	4 vCPU
RAM	8 GB

This is how your central server should be partitioned:

Volume group (LVM)	File system	Description	Size
	/boot	boot images	1 GB
vg_root	/	system root	20 GB
vg_root	swap	swap	4 GB
vg_root	/var/log	contains all log files	10 GB
vg_data	/var/lib/centreon	contains mostly RRD files	339 GB
vg_data	/var/lib/centreon-broker	contains retention files	50 GB
vg_data	/var/lib/centreon-engine		5 GB
vg_data	/var/cache/centreon/backup	backup directory	10 GB If you perform backups, use the following characteristics: size of the /var/lib/mysql partition * 0,6 this size is meant for 1 full backup and 6 partial ones this is only an estimate, size should be checked manually

Database server

Element	Value
CPU	4 vCPU
RAM	8 GB

This is how the database server should be partitioned:

Volume group (LVM)	File system	Description	Size
	/boot	boot images	1 GB
vg_root	/	system root	20 GB
vg_root	swap	swap	4 GB
vg_root	/var/log	contains all log files	10 GB
vg_data	/var/lib/mysql	database	1094 GB

| vg_data | | Free space (unallocated) | 5 GB |

Your system must use LVM to manage the file system.

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.

Pollers

• To handle testing or small environments (up to 2000 services with checks every 5 minutes, or up to 500 services with checks every minute):

Element	Value
CPU (logical core at 3 GHz)	2 vCPU
RAM	2 GB
HDD	40 GB

• To handle production environments (up to 7000 services with checks every 5 minutes):

Element	Value
CPU (logical core at 3 GHz)	4 vCPU
RAM	4 GB
HDD	40 GB

This is how the pollers should be partitioned:

Volume group (LVM)	File system	Description	Size
	/boot	boot images	1 GB
vg_root	/	system root	20 GB
vg_root	swap	swap	4 GB
vg_root	/var/log	contains all log files	10 GB
vg_data	/var/lib/centreon-engine		5 GB

Your system must use LVM to manage the file system.

The number of vCPU depends of the complexity of the checks. If you use connectors or perform a large number of system/third-party binary calls, you should add more vCPU.

Up to 10,000 hosts

Distributed architecture:

• 1 central server without a database
• 1 database server
• 1 poller for every 500 hosts

Central server

Element	Value
CPU	8 vCPU
RAM	8 GB

This is how your central server should be partitioned:

Volume group (LVM)	File system	Description	Size
	/boot	boot images	1 GB
vg_root	/	system root	20 GB
vg_root	swap	swap	4 GB
vg_root	/var/log	contains all log files	10 GB
vg_data	/var/lib/centreon	contains mostly RRD files	677 GB
vg_data	/var/lib/centreon-broker	contains retention files	50 GB
vg_data	/var/lib/centreon-engine		5 GB
vg_data	/var/cache/centreon/backup	backup directory	10 GB If you perform backups, use the following characteristics: size of the /var/lib/mysql partition * 0,6 this size is meant for 1 full backup and 6 partial ones this is only an estimate, size should be checked manually

Database server

Element	Value
CPU	8 vCPU
RAM	8 GB

This is how the database server should be partitioned:

Volume group (LVM)	File system	Description	Size
	/boot	boot images	1 GB
vg_root	/	system root	20 GB
vg_root	swap	swap	4 GB
vg_root	/var/log	contains all log files	10 GB
vg_data	/var/lib/mysql	database	2257 GB
vg_data		Free space (unallocated)	5 GB

Your system must use LVM to manage the file system.

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.

Pollers

• To handle testing or small environments (up to 2000 services with checks every 5 minutes, or up to 500 services with checks every minute):

Element	Value
CPU (logical core at 3 GHz)	2 vCPU
RAM	2 GB
HDD	40 GB

• To handle production environments (up to 7000 services with checks every 5 minutes):

Element	Value
CPU (logical core at 3 GHz)	4 vCPU
RAM	4 GB
HDD	40 GB

This is how the pollers should be partitioned:

Volume group (LVM)	File system	Description	Size
	/boot	boot images	1 GB
vg_root	/	system root	20 GB
vg_root	swap	swap	4 GB
vg_root	/var/log	contains all log files	10 GB
vg_data	/var/lib/centreon-engine		5 GB

Your system must use LVM to manage the file system.

The number of vCPU depends of the complexity of the checks. If you use connectors or perform a large number of system/third-party binary calls, you should add more vCPU.

Over 10,000 hosts

For very large amounts of data, contact your sales representative.

Network flows

If you have firewalls or security resources in place, check the table of network flows.