【postgresql】AWSRDSへEC2インスタンスから接続する

[root@ip-192-168-0-116 ~]# psql -h  database-1.cbvmfgntscsc.ap-northeast-1.rds.amazonaws.com -p 5432 -U postgres
Password for user postgres:
psql (9.6.8, server 11.5)
WARNING: psql major version 9.6, server major version 11.
         Some psql features might not work.
SSL connection (protocol: TLSv1.2, cipher: ECDHE-RSA-AES256-GCM-SHA384, bits: 256, compression: off)
Type "help" for help.

postgres=>