Each ltcluster.conf file must contain the following parameters:
node_id (int)
A unique integer greater than zero which identifies the node.
node_name (string)
An arbitrary (but unique) string; we recommend using the server's hostname
or another identifier unambiguously associated with the server to avoid
confusion. Avoid choosing names which reflect the node's current role,
e.g. primary or standby1
as roles can change and if you end up in a solution where the current primary is
called standby1 (for example), things will be confusing
to say the least.
The string's maximum length is 63 characters and it should contain only printable ASCII characters.
conninfo (string)
Database connection information as a conninfo string. All servers in the cluster must be able to connect to the local node using this string.
For details on conninfo strings, see section Connection Strings in the PosgreSQL documentation.
If ltclusterd is in use, consider explicitly setting
connect_timeout in the conninfo
string to determine the length of time which elapses before a network
connection attempt is abandoned; for details see
the LightDB documentation.
data_directory (string)The node's data directory. This is needed by ltcluster when performing operations when the LightDB instance is not running and there's no other way of determining the data directory.