Postgresql 需要使用ftp客户端postgres数据库表中的凭据登录

安装proftp以在ec2实例上启用ftpserver，我需要使用ftp客户端postgres数据库表中的凭据登录

按照以下链接中的建议进行配置：

如果有人能帮我，我在哪里遗漏了什么

获取以下错误

 2017-07-18 07:12:36,935 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal: RELINQUISH PRIVS at main.c:1268
2017-07-18 07:12:36,935 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal: no matching vhost found for 127.0.0.1#21, using 'ProFTPD Default Installation' listening on wildcard address
2017-07-18 07:12:36,935 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): ROOT PRIVS at main.c:1073
2017-07-18 07:12:36,935 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): SETUP PRIVS at main.c:1078
2017-07-18 07:12:36,935 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): session requested from client in unknown class
2017-07-18 07:12:36,935 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): performing module session initializations
2017-07-18 07:12:36,935 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): mod_sql/4.3: defaulting to 'postgres' backend
2017-07-18 07:12:36,935 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): mod_delay/0.7: no DelayOnEvent rules configured with "DelayTable none" in effect, disabling module
2017-07-18 07:12:36,935 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): ROOT PRIVS at mod_auth.c:215
2017-07-18 07:12:36,935 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): opening scoreboard '/opt/apps/proftpd1.3.6/var/proftpd.scoreboard'
2017-07-18 07:12:36,935 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): RELINQUISH PRIVS at mod_auth.c:217
2017-07-18 07:12:36,935 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): connected - local  : 127.0.0.1:21
2017-07-18 07:12:36,935 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): connected - remote : 127.0.0.1:40094
2017-07-18 07:12:36,935 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): FTP session opened.
2017-07-18 07:12:50,533 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching PRE_CMD command 'USER galaxyadmin@gmail.com' to mod_core
2017-07-18 07:12:50,533 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching PRE_CMD command 'USER galaxyadmin@gmail.com' to mod_core
2017-07-18 07:12:50,533 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching PRE_CMD command 'USER galaxyadmin@gmail.com' to mod_delay
2017-07-18 07:12:50,533 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching PRE_CMD command 'USER galaxyadmin@gmail.com' to mod_auth
2017-07-18 07:12:50,533 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching CMD command 'USER galaxyadmin@gmail.com' to mod_auth
2017-07-18 07:12:50,533 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching POST_CMD command 'USER galaxyadmin@gmail.com' to mod_sql
2017-07-18 07:12:50,533 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching POST_CMD command 'USER galaxyadmin@gmail.com' to mod_delay
2017-07-18 07:12:50,533 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching LOG_CMD command 'USER galaxyadmin@gmail.com' to mod_sql
2017-07-18 07:12:50,533 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching LOG_CMD command 'USER galaxyadmin@gmail.com' to mod_log
2017-07-18 07:12:50,533 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching LOG_CMD command 'USER galaxyadmin@gmail.com' to mod_delay
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching PRE_CMD command 'PASS (hidden)' to mod_core
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching PRE_CMD command 'PASS (hidden)' to mod_core
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching PRE_CMD command 'PASS (hidden)' to mod_sql_passwd
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching PRE_CMD command 'PASS (hidden)' to mod_sql
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching PRE_CMD command 'PASS (hidden)' to mod_delay
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching PRE_CMD command 'PASS (hidden)' to mod_auth
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching CMD command 'PASS (hidden)' to mod_auth
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): USER galaxyadmin@gmail.com: no such user found from localhost6 [127.0.0.1] to 127.0.0.1:21
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching POST_CMD_ERR command 'PASS (hidden)' to mod_sql
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching POST_CMD_ERR command 'PASS (hidden)' to mod_delay
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching LOG_CMD_ERR command 'PASS (hidden)' to mod_sql
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching LOG_CMD_ERR command 'PASS (hidden)' to mod_log
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching LOG_CMD_ERR command 'PASS (hidden)' to mod_delay
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching LOG_CMD_ERR command 'PASS (hidden)' to mod_auth
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching PRE_CMD command 'SYST' to mod_core
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching PRE_CMD command 'SYST' to mod_core
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching CMD command 'SYST' to mod_core
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching POST_CMD command 'SYST' to mod_sql
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching LOG_CMD command 'SYST' to mod_sql
2017-07-18 07:12:56,303 ip-172-31-9-252 proftpd[10487] ip-172-31-9-252.us-west-2.compute.internal (localhost6[127.0.0.1]): dispatching LOG_CMD command 'SYST' to mod_log

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我有一个ProFTPd安装可以工作。现在我正在尝试通过postgres路由身份验证。有一个包含webapp用户表的数据库。理想情况下，这将允许webapp用户使用其webapp证书登录到FTP。如果配置，它会显示什么？希望该日志将显示用户的查询，以及为什么

mod\u sql

找不到该用户。。。