Prerequisites for an HA architecture
Sizing
See the general sizing information for a standard Centreon platform. In addition, you must have at least 5 Go available on the VG that contains the /var/lib/mysql partition, otherwise you will not be able to set up the replication.
Table of HA network flows
| Source | Destination | Port/Protocol | Comments |
|---|---|---|---|
| Active central node | Passive central node | TCP 22 | To synchronize configuration files (the flow must also be open in the passive --> active direction) |
| Active central node | Passive central node | TCP 5670 | To synchronize RRD files (the flow must also be open in the passive --> active direction) |
| Active DB node | Passive DB node | TCP 3306 | MySQL synchronization (the flow must also be open in the passive --> active direction) |
| Active DB node | Passive DB node | TCP 22 | MySQL Synchronization (the flow must also be open in the passive --> active direction) |
| Central servers + DB + QDevice | Central servers + DB + QDevice | UDP 5404 | Communication inside the cluster (Multicast) |
| Central servers + DB + QDevice | Central servers + DB + QDevice | UDP 5405 | Communication inside the cluster (Unicast) |
| Central servers + DB + QDevice | Central servers + DB + QDevice | TCP 2224 | Communication inside the cluster |
| Central servers + DB + QDevice | Central servers + DB + QDevice | TCP 5403 | Communication with the QDevice |
See also the general tables of network flows.