nginx に vsftpd をインストールするときに発生する問題を解決する方法

[root@itdragon ~]# useradd ftpuser
[root@itdragon ~]# passwd ftpuser
changing password for user ftpuser.
new password: 
bad password: it is too short
bad password: is too simple
retype new password: 
passwd: all authentication tokens updated successfully.
[root@itdragon ~]# yum -y install vsftpd
[root@itdragon ~]# ifconfig

状态: 正在等待重试...
状态: 正在连接 192.168.0.11:21...
错误: 20 秒后无活动，连接超时
错误: 无法连接到服务器

[root@itdragon ~]# vim /etc/vsftpd/vsftpd.conf
anonymous_enable=no
pasv_min_port=30000
pasv_max_port=31000
[root@itdragon ~]# service vsftpd restart
[root@itdragon ~]# vim /etc/sysconfig/iptables
-a input -p tcp -m multiport --dport 20,21 -m state --state new -j accept
-a input -p tcp -m state --state new -m tcp --dport 21 -j accept
-a input -p tcp --dport 30000:31000 -j accept
[root@itdragon ~]# service iptables restart
[root@itdragon ~]# getsebool -a | grep ftp
allow_ftpd_anon_write --> off
allow_ftpd_full_access --> off
allow_ftpd_use_cifs --> off
allow_ftpd_use_nfs --> off
ftp_home_dir --> off
ftpd_connect_db --> off
ftpd_use_fusefs --> off
ftpd_use_passive_mode --> off
httpd_enable_ftp_server --> off
tftp_anon_write --> off
tftp_use_cifs --> off
tftp_use_nfs --> off
[root@itdragon ~]# setsebool -p allow_ftpd_full_access on
[root@itdragon ~]# setsebool -p ftp_home_dir on

[root@itdragon modprobe.d]# service iptables stop
iptables: setting chains to policy accept: filter     [ ok ]
iptables: flushing firewall rules:             [ ok ]
iptables: unloading modules:                [ ok ]
[root@itdragon modprobe.d]# chkconfig iptables off

响应:553 could not create file.
错误: 严重文件传输错误

[root@itdragon html]# mkdir images
[root@itdragon html]# chmod -r 777 images
[root@itdragon html]# ll
total 12
-rw-r--r--. 1 root root 537 nov 18 10:53 50x.html
drwxrwxrwx. 2 root root 4096 nov 18 10:55 images
-rw-r--r--. 1 root root 612 nov 18 10:53 index.html
[root@itdragon html]# vim /etc/vsftpd/vsftpd.conf 
local_root=/var/ftp
[root@itdragon html]# service vsftpd restart