脚本编写的思路：
1. 安装vsftpd软件；
2. 创建一个访问vsftpd的用户和密码（这个用户不作为系统用户），创建一个该用户能访问vsftpd的目录（该目录的用户名和组为访问的用户名）；
3. 配置服务的主配置文件vsftpd.conf（什么端口， 主动模式还是被动模式等），这里是直接将配置好的vsftpd.conf文件拷贝到相应的配置文件里；
4. 将访问的用户添加进用户访问控制列表；
5. 防火墙上开放相应的端口；
6. selinux默认关闭；
1. vsftpd.conf的配置信息如下：（端口21；被动模式；只允许用户列表里的用户访问）
# 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). anonymous_enable=NO # # Uncomment this to allow local users to log in. # When SELinux is enforcing check for SE bool ftp_home_dir 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. # When SELinux is enforcing check for SE bool allow_ftpd_anon_write, allow_ftpd_full_access #anon_upload_enable=YES # # Uncomment this if you want the anonymous FTP user to be able to create # new directories. #anon_mkdir_write_enable=YES # # Activate directory messages - messages given to remote users when they # go into a certain directory. dirmessage_enable=YES # # Activate logging of uploads/downloads. 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=YES #chown_username=whoever # # You may override where the log file goes if you like. The default is shown # below. #xferlog_file=/var/log/xferlog # # If you want, you can have your log file in standard ftpd xferlog format. # Note that the default log file location is /var/log/xferlog in this case. 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=ftpsecure # # 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(). # (Warning! chroot'ing can be very dangerous. If using chroot, make sure that # the user does not have write access to the top level directory within the # chroot) chroot_local_user=YES allow_writeable_chroot=YES #chroot_list_enable=YES # (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=NO # # This directive enables listening on IPv6 sockets. By default, listening # on the IPv6 "any" address (::) will accept connections from both IPv6 # and IPv4 clients. It is not necessary to listen on *both* IPv4 and IPv6 # sockets. If you want that (perhaps because you want to listen on specific # addresses) then 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 listen_port=21 pasv_enable=YES pasv_min_port=30000 pasv_max_port=31000 userlist_enable=YES userlist_deny=NO userlist_file=/etc/vsftpd/vsftpd.user_list
2. selinux_config配置文件内容：
# This file controls the state of SELinux on the system. # SELINUX= can take one of these three values: # enforcing - SELinux security policy is enforced. # permissive - SELinux prints warnings instead of enforcing. # disabled - No SELinux policy is loaded. SELINUX=permissive # SELINUXTYPE= can take one of three two values: # targeted - Targeted processes are protected, # minimum - Modification of targeted policy. Only selected processes are protected. # mls - Multi Level Security protection. SELINUXTYPE=targeted
3. 执行脚本的代码：
#!/bin/bash
current_dir=`pwd`
ftp_user='test'
ftp_pwd='test123'
ftp_root_dir='/home/ftp'
echo "step1:install vsftpd..."
rpm -e vsftpd*
rpm -ivh ${current_dir}/vsftpd-3.0.2-22.el7.x86_64.rpm
echo "step2:add ftp user..."
mkdir -p ${ftp_root_dir}
useradd -s /sbin/nologin ${ftp_user} -M //创建的用户不作为系统用户
usermod -d ${ftp_root_dir} ${ftp_user}
echo ${ftp_pwd} | passwd ${ftp_user} --stdin &>/dev/null
chown -R ${ftp_user}:${ftp_user} ${ftp_root_dir}
echo "step3:config vsftpd..."
cp ${current_dir}/vsftpd.conf /etc/vsftpd/
echo ${ftp_user}>/etc/vsftpd/vsftpd.user_list
chkconfig vsftpd on
echo "step4:config firewall..."
service firewalld restart //防火墙配置
firewall-cmd --permanent --add-port=21/tcp
firewall-cmd --permanent --add-port=30000-31000/tcp
firewall-cmd --reload
setenforce 0
cp ${current_dir}/selinux_config /etc/selinux/config
echo "step5:start vsftpd..."
service vsftpd restart
echo "finished!!!!!!!!"
4. 我的脚本文件里面有安装的脚本、selinux配置文件、vsftpd配置文件和vsftpd软件的rpm包：
该脚本放在如何目录下都不影响实际的安装。
5. 安装完成后可以通过网址域名访问测试是否安装成功：ftp://IP:21 创建的用户名登入；
关于vsftpd服务的详细内容，可参考本人的另一篇文章：https://www.cnblogs.com/yjiajia/p/13201889.html