The sslinfo module provides information about the SSL certificate that the current client provided when connecting to Greenplum. Most functions in this module return NULL if the current connection does not use SSL.
The Greenplum Database sslinfo module is equivalent to the PostgreSQL sslinfo module. There are no Greenplum Database or MPP-specific considerations for the module.
Installing and Registering the Module
The sslinfo module is installed when you install Greenplum Database. Before you can use any of the functions defined in the module, you must register the sslinfo extension in each database in which you want to use the functions.
See sslinfo in the PostgreSQL documentation for detailed information about the individual functions in this module.