pam配置文件:/etc/pam.d/vsftpd.mysql
auth required pam_mysql.so user=vsftpd passwd=mageedu host=localhost db=vsftpd table=users usercolumn=name passwdcolumn=password crypt=2 account required pam_mysql.so user=vsftpd passwd=mageedu host=localhost db=vsftpd table=users usercolumn=name passwdcolumn=password crypt=2