Create a ltcluster.conf file on the primary server. The file must
   contain at least the following parameters:
  
    node_id=1
    node_name='node1'
    conninfo='host=node1 user=ltcluster dbname=ltcluster connect_timeout=2'
    data_directory='/var/lib/lightdb/data'
  
   ltcluster.conf should not be stored inside the LightDB data directory,
   as it could be overwritten when setting up or reinitialising the LightDB
   server. See sections Configuration and configuration file
   for further details about ltcluster.conf.
  
      ltcluster only uses pg_bindir when it executes
      LightDB binaries directly.
    
      For user-defined scripts such as promote_command and the
      various service_*_commands, you must
      always explicitly provide the full path to the binary or script being
      executed, even if it is ltcluster itself.
    
      This is because these options can contain user-defined scripts in arbitrary
      locations, so prepending pg_bindir may break them.
    
    For Debian-based distributions we recommend explictly setting
    pg_bindir to the directory where lt_ctl and other binaries
    not in the standard path are located.
   
      If your distribution places the ltcluster binaries in a location other than the
      LightDB installation directory, specify this with ltcluster_bindir
      to enable ltcluster to perform operations (e.g.
      ltcluster cluster crosscheck)
      on other nodes.
    
See the file ltcluster.conf.sample for details of all available configuration parameters.