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Prerequisites

OS

The poller should be installed on a dedicated fresh Alma Linux 8 server. Even if still supported, we encourage you not to use CentOS 7, as end of support is close.

Hardware

The host machine must have at least the following characteristics:

  • To handle testing or small environments (up to 2000 services with checks every 5 minutes, or up to 500 services with checks every minute):
ElementValue
CPU (logical core at 3Ghz)2 vCPU
RAM2 GB
HDD40 GB
  • To handle production environments (up to 7000 services with checks every 5 minutes):
ElementValue
CPU (logical core at 3Ghz)4 vCPU
RAM4 GB
HDD40 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.

It is recommended to partition the poller's disk to prevent it from becoming full and unusable (for instance, in case of retention issues). Perform the partitioning following these recommendations:

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

Network

DescriptionDirectionProtocolIPPort
VPNOutboundUDPVPN IP (TBA)1194
INTERNETOutboundHTTP/HTTPS*80/443
NTPOutboundUDPTBA123
SourceDestinationPort/ProtocolMonitoring protocol
Centreon serversDevices to monitor80/443 TCPAPI
Centreon serversDatabase to monitor3306/1521/1433 TCPMySQL/Oracle/MSSQL