gp_connection_send_timeout

gp_vmem_idle_resource_timeout

listen_addresses

max_connections

max_prepared_transactions

superuser_reserved_connections

tcp_keepalives_count

tcp_keepalives_idle

tcp_keepalives_interval

unix_socket_directory

unix_socket_group

unix_socket_permissions

authentication_timeout

db_user_namespace

krb_caseins_users

krb_server_keyfile

krb_srvname

password_encryption

ssl

ssl_ciphers