rpm -qa | grep vsftpd如果没有提示则说明没有安装 如果提示版本号则说明已经安装

离线安装
rpm -ivh vsftpd-3.0.2-22.el7.x86_64.rpm
在线安装
yum install -y vsftp安装过程可能会报错：

[root@yjy-pt01 vsftpd]# rpm -ivh vsftpd-3.0.2-22.el7.x86_64.rpm
 warning: vsftpd-3.0.2-22.el7.x86_64.rpm: Header V3 RSA/SHA256 Signature, key ID f4a80eb5: NOKEY
 error: Failed dependencies:
 libc.so.6(GLIBC_2.14)(64bit) is needed by vsftpd-3.0.2-22.el7.x86_64
 libc.so.6(GLIBC_2.15)(64bit) is needed by vsftpd-3.0.2-22.el7.x86_64

解决：安装相关依赖rpm -ivh libcap-2.16-5.5.el6.x86_64.rpmrpm -ivh libcap-devel-2.16-5.5.el6.x86_64.rpm

[root@yjy-pt03 local]# rpm -qa | grep vsftpd
vsftpd-2.2.2-24.el6.x86_64                            //出现版本号，说明安装成功

开启
# iptables -I INPUT -i eth0 -p tcp --dport 20 -j ACCEPT
# iptables  -I OUTPUT -o eth0 -p tcp --sport 20 -j ACCEPT
保存
# /etc/rc.d/init.d/iptables save
重启防火墙
# service iptables restart

useradd vsftpd -s /sbin/nologin            //系统用户  vsftpd  主要是提供一个默认宿主

useradd virtusers  -s /sbin/nologin        //系统用户  virtusers  本文主要讲虚拟用户登录，这相当于我们的虚拟用户组

cp /etc/vsftpd/vsftpd.conf /etc/vsftpd/vsftpd.backup.conf

#默认的根目录为

#local_root=/var/ftp

#设置为NO代表不允许匿名
anonymous_enable=NO#设定本地用户可以访问，主要是虚拟宿主用户，如果设为NO那么所欲虚拟用户将无法访问。
local_enable=YES#可以进行写的操作
write_enable=YES#设定上传文件的权限掩码
local_umask=022#禁止匿名用户上传
anon_upload_enable=NO#禁止匿名用户建立目录
anon_mkdir_write_enable=NO# 设定开启目录标语功能
dirmessage_enable=YES# 设定开启日志记录功能
xferlog_enable=YES#设定端口20进行数据连接
connect_from_port_20=YES#设定禁止上传文件更改宿主
chown_uploads=NO#设定vsftpd服务日志保存路劲。注意：改文件默认不纯在，需手动touch，且由于这里更改了vsftpd服务的宿主用户为手动建立的vsftpd，则必
须注意给予该用户对日志的读取权限否则服务启动失败。
xferlog_file=/var/log/vsftpd.log      //这个文件在后面步骤中会提及#设定日志使用标准的记录格式
xferlog_std_format=YES#设定空闲链接超时时间，这里使用默认/秒。
#idle_session_timeout=600#设定最大连接传输时间，这里使用默认，将具体数值留给每个用户具体制定，默认120/秒
data_connection_timeout=3600#设定支撑vsftpd服务的宿主用户为手动建立的vsftpd用户。注意：一旦更改宿主用户，需一起与该服务相关的读写文件的读写赋权问题.
nopriv_user=vsftpd#设定支持异步传输的功能
#async_abor_enable=YES#设置vsftpd的登陆标语
ftpd_banner=hello 欢迎登陆#是否将所有用户限制在主目录,YES为启用 NO禁用.(该项默认值是NO,即在安装vsftpd后不做配置的话，ftp用户是可以向上切换到要目录之外的)chroot_local_user=NO //如果设置成YE会导致你用java代码创建文件夹时失败，因为他被限制在了宿主目录

#禁止用户登出自己的ftp主目录
chroot_list_enable=NO#禁止用户登陆ftp后使用ls -R 命令。该命令会对服务器性能造成巨大开销，如果该项运行当多个用户使用该命令会对服务器造成威胁。
ls_recurse_enable=NO#设定vsftpd服务工作在standalone模式下。所谓standalone模式就是该服务拥有自己的守护进程，在ps -A可以看出vsftpd的守护进程名。如果
不想工作在standalone模式下，可以选择SuperDaemon模式，注释掉即可，在该模式下vsftpd将没有自己的守护进程，而是由超级守护进程Xinetd全权代理，>与此同时，vsftpd服务的许多功能，将得不到实现。
listen=YES#设定userlist_file中的用户将不能使用ftp
userlist_enable=YES#设定pam服务下的vsftpd验证配置文件名。因此，PAM验证将参考/etc/pam.d/下的vsftpd文件配置。
pam_service_name=vsftpd#设定支持TCPwrappers
tcp_wrappers=YES#################################################以下是关于虚拟用户支持的重要配置项目，默认.conf配置文件中是不包含这些项目的，需手动添加。
#启用虚拟用户功能
guest_enable=YES#指定虚拟的宿主用户
guest_username=virtusers    //virtusers就是我们上面创建的系统用户，作为我们的虚拟用户组使用

#设定虚拟用户的权限符合他们的宿主用户 virtual_use_local_privs=YES 

#设定虚拟用户个人vsftp的配置文件存放路劲。这个被指定的目录里，将被存放每个虚拟用户个性的配置文件，注意的地方是：配置文件名必须 和虚拟用户名相同。 user_config_dir=/etc/vsftpd/vconf           //这是个目录，是为每一个虚拟用户配置单独的权限使用，这里我们主要配置每个用户的单独根目录 

#开启每个虚拟用户有独立的根目录chroot_local_user=YES

#禁止反向域名解析，若是没有添加这个参数可能会出现用户登陆较慢，或则客户链接不上ftp的现象reverse_lookup_enable=NO

//上线配置文件中配置的日志目录touch /var/log/vsftpd.logchown vsftpd.vsftpd /var/log/vsftpd.log

mkdir /etc/vsftpd/vconf/

test
123456
test1
654321

db_load -T -t hash -f   /opt/vsftp/passwd  /opt/vsftp/passwd.db

cp /etc/pam.d/vsftpd   /etc/pam.d/vsftpd.backup

#%PAM-1.0
#####32位系统配置
#auth    sufficient      /lib/security/pam_userdb.so     db=/etc/vsftpd/xnpasswd
#account sufficient      /lib/security/pam_userdb.so     db=/etc/vsftpd/xnpasswd
#####64位系统配置
auth    sufficient      /lib64/security/pam_userdb.so     db=/opt/vsftp/passwd
account sufficient      /lib64/security/pam_userdb.so     db=/opt/vsftp/passwd#以上两条是手动添加的，内容是对虚拟用户的安全和帐户权限进行验证。
#这里的auth是指对用户的用户名口令进行验证。
#这里的accout是指对用户的帐户有哪些权限哪些限制进行验证。
auth       required     pam_listfile.so item=user sense=deny file=/etc/vsftpd/ftpusers onerr=succeed
auth       required     pam_shells.so
auth       include      system-auth
account    include      system-auth
session    include      system-auth
session    required     pam_loginuid.so

# Example config file /etc/vsftpd/vsftpd.conf
#
# The default compiled in settings are fairly paranoid. This sample file
# loosens things up a bit, to make the ftp daemon more usable.
# Please see vsftpd.conf.5 for all compiled in defaults.
#
# READ THIS: This example file is NOT an exhaustive list of vsftpd options.
# Please read the vsftpd.conf.5 manual page to get a full idea of vsftpd's
# capabilities.
#
# Allow anonymous FTP? (Beware - allowed by default if you comment this out).
local_root=/opt/vsftpd/file  //这里是我配置的test用户的根目录
anonymous_enable=NO
#
# Uncomment this to allow local users to log in.
local_enable=YES
#
# Uncomment this to enable any form of FTP write command.
write_enable=YES
#
# Default umask for local users is 077. You may wish to change this to 022,
# if your users expect that (022 is used by most other ftpd's)
local_umask=022
#
# Uncomment this to allow the anonymous FTP user to upload files. This only
# has an effect if the above global write enable is activated. Also, you will
# obviously need to create a directory writable by the FTP user.
anon_upload_enable=NO
#
# Uncomment this if you want the anonymous FTP user to be able to create
# new directories.
anon_mkdir_write_enable=NO
#anno_other_writer_enable=YES
#
# Activate directory messages - messages given to remote users when they
# go into a certain directory.
#dirmessage_enable=YES
#
# The target log file can be vsftpd_log_file or xferlog_file.
# This depends on setting xferlog_std_format parameter
#xferlog_enable=YES
#
# Make sure PORT transfer connections originate from port 20 (ftp-data).
#connect_from_port_20=YES
#
# If you want, you can arrange for uploaded anonymous files to be owned by
# a different user. Note! Using "root" for uploaded files is not
# recommended!
#chown_uploads=NO
#chown_username=whoever
#
# The name of log file when xferlog_enable=YES and xferlog_std_format=YES
# WARNING - changing this filename affects /etc/logrotate.d/vsftpd.log
#xferlog_file=/var/log/vsftpd.log
#
# Switches between logging into vsftpd_log_file and xferlog_file files.
# NO writes to vsftpd_log_file, YES to xferlog_file
#xferlog_std_format=YES
#
# You may change the default value for timing out an idle session.
#idle_session_timeout=600
#
# You may change the default value for timing out a data connection.
#data_connection_timeout=120
#
# It is recommended that you define on your system a unique user which the
# ftp server can use as a totally isolated and unprivileged user.
#nopriv_user=vsftpd
#
# Enable this and the server will recognise asynchronous ABOR requests. Not
# recommended for security (the code is non-trivial). Not enabling it,
# however, may confuse older FTP clients.
async_abor_enable=YES
#
# By default the server will pretend to allow ASCII mode but in fact ignore
# the request. Turn on the below options to have the server actually do ASCII
# mangling on files when in ASCII mode.
# Beware that on some FTP servers, ASCII support allows a denial of service
# attack (DoS) via the command "SIZE /big/file" in ASCII mode. vsftpd
# predicted this attack and has always been safe, reporting the size of the
# raw file.
# ASCII mangling is a horrible feature of the protocol.
#ascii_upload_enable=YES
#ascii_download_enable=YES
#
# You may fully customise the login banner string:
#ftpd_banner=Welcome to blah FTP service.
#
# You may specify a file of disallowed anonymous e-mail addresses. Apparently
# useful for combatting certain DoS attacks.
#deny_email_enable=YES
# (default follows)
#banned_email_file=/etc/vsftpd/banned_emails
#
# You may specify an explicit list of local users to chroot() to their home
# directory. If chroot_local_user is YES, then this list becomes a list of
# users to NOT chroot().
#chroot_local_user=NO
#chroot_list_enable=NO
# (default follows)
#chroot_list_file=/etc/vsftpd/chroot_list
#
# You may activate the "-R" option to the builtin ls. This is disabled by
# default to avoid remote users being able to cause excessive I/O on large
# sites. However, some broken FTP clients such as "ncftp" and "mirror" assume
# the presence of the "-R" option, so there is a strong case for enabling it.
#ls_recurse_enable=YES
#
# When "listen" directive is enabled, vsftpd runs in standalone mode and
# listens on IPv4 sockets. This directive cannot be used in conjunction
# with the listen_ipv6 directive.
#listen=YES
#
# This directive enables listening on IPv6 sockets. To listen on IPv4 and IPv6
# sockets, you must run two copies of vsftpd with two configuration files.
# Make sure, that one of the listen options is commented !!
#listen_ipv6=YES#pam_service_name=vsftpd
#userlist_enable=YES
#tcp_wrappers=YES#guest_enable=YES
#guest_username=virtusers
#virtual_use_local_privs=YES
#reverse_lookup_enable=NO

mkdir -p /opt/vsftpd/file    //这就是5.6中local_root=/opt/vsftpd/file 配置的根目录

chown virtusers:virtusers /opt/vsftpd/file 

chmod 755 /opt/vsftpd/file

touch  /opt/vsftpd/file/abc

service vsftpd restart

#开启service vsftpd start
#停止
service vsftpd stop
#重启
service vsftpd restart