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Once the cluster configuration file is defined, and every module across the cluster has a copy of the cluster.config with its module-specific configuration, proceed to start the cluster services. A systemd service is installed with each module RPM package. The service names follow the pattern regatta-1.0-<module name>, for example: regatta-1.0-rdb. For a single-node deployment, start all services with the following command: 
systemctl start regatta-*
For a multi-node deployment, an additional file should be created for each RDB module named rdb.config, alongside the cluster.config file: 
/opt/regatta/1.0/rdb/conf/rdb.config
The file should contain the ID assigned to the RDB module on the current node, as defined in the configuration file: 
rdb=<module id>
For example, if in the configuration file the module ID was defined as follows: 
module_4_id=3
Then the rdb.config file should contain the following line: 
rdb=3
Once the rdb.config file is present for each RDB module across the cluster nodes, proceed to start the services on each of the cluster nodes: 
sudo systemctl start regatta-1.0-<module_name>.service
Where module is one of the Regatta software modules. For example: 
sudo systemctl start regatta-1.0-rdb.service