yum -y install vsftpd*
yum -y install db4*
============================================================================
First create a text file containing the virtual user name and its password, and then generate the virtual user password library file on this basis:
#vim
Add the following information (single behavior username, even behavior password):
123 // Username
456 // Password
:wq // Save and exit
==================================================================================
db_load -T -t hash -f /etc/vsftpd_login.db
chmod 600 /etc/vsftpd_login.db
=============================================================================
vi /etc//
auth required /lib/security/pam_userdb.so db=/etc/vsftpd_login
account required /lib/security/pam_userdb.so db=/etc/vsftpd_login
==============================================================================
Create a virtual user access directory and set permissions for virtual user access
#useradd -d /var/ftp/share -s /sbin/nologin virtual
#chmod 700 /var/ftp/share
=====================================================================================================
vim /etc/vsftpd/ adds below
chroot_local_user=YES
guest_enable=YES
guest_username=virtual
pam_service_name=
user_config_dir=/etc/vsftpd_user_conf
==================================================================================================
Create the user_config_dir file directory and create a configuration file named after the user name
#mkdir /etc/vsftpd/user_config_dir
#vi /etc/vsftpd/user_config_dir/1
anon_world_readable_only=NO
anon_upload_enable=YES #?
write_enable=YES
download_enable=YES
anon_other_write_enable=YES
anon_mkdir_write_enable=YES
local_root=/var/ftp/share/123 �
Other account configurations are based on the above parameters and set as needed..
===============================================================
vim /etc/vsftpd_user_conf/123
anon_world_readable_only=NO
anon_upload_enable=YES
write_enable=YES
download_enable=YES
anon_other_write_enable=YES
anon_mkdir_write_enable=YES
local_root=/var/ftp/share/123
mkdir -p /var/ftp/share/123
================================================
Whenever the step in creating a virtual user
1 Modify vim Add user and password
2. Generate database
db_load -T -t hash -f /etc/vsftpd_login.db
chmod 600 /etc/vsftpd_login.db
3 Set different permissions for each virtual username
cp -p /etc/vsftpd_user_conf/123 /etc/vsftpd_user_conf/789
4 Set the permissions of vim /etc/vsftpd_user_conf/789 user
anon_world_readable_only=NO
anon_upload_enable=YES
write_enable=YES
download_enable=YES
anon_other_write_enable=YES
anon_mkdir_write_enable=YES
local_root=/var/ftp/share/789
=======================================================
mkdir -p /var/ftp/share/789
chown -R /var/ftp/share