Vsftpd使用MySQL验证实验

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Vsftpd使用mysql验证实验笔记
实验环境

主机	IP	作用
mysql.xruan.com	192.168.0.11	用于存储vsftpd虚拟用户信息
vsftp.xruan.com	192.168.0.12	提供ftp服务

实验步骤：
第1步：安装vsftpd并测试可用性（在vsftp.xruan.com，192.168.0.12上执行）
[iyunv@CentOS6lsrv02 ~]# yum install -y vsftpd
[iyunv@CentOS6lsrv02 ~]# yum install -y lftp
[iyunv@CentOS6lsrv02 ~]# lftp 192.168.0.12
lftp 192.168.0.12:~>
第2步：安装mysql-server并创建用户和表（在mysql.xruan.com，192.168.0.11上执行）
[iyunv@CentOS6lsrv01 ~]# yum install -ymysql-server &> /dev/null
[iyunv@CentOS6lsrv01 ~]# rpm -q mysql-server
mysql-server-5.1.71-1.el6.x86_64
启动MySQL服务
[iyunv@CentOS6lsrv01 ~]# service mysqld start
Initializing MySQL database:  WARNING: The host 'CentOS6lsrv01' could notbe looked up with resolveip.
This probably means that your libc libraries arenot 100 % compatible
with this binary MySQL version. The MySQLdaemon, mysqld, should work
normally with the exception that host nameresolving will not work.
This means that you should use IP addressesinstead of hostnames
when specifying MySQL privileges !
Installing MySQL system tables...
OK
Filling help tables...
OK

To start mysqld at boot time you have to copy
support-files/mysql.server to the right placefor your system

PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQLroot USER !
To do so, start the server, then issue thefollowing commands:

/usr/bin/mysqladmin -u root password'new-password'
/usr/bin/mysqladmin -u root -h CentOS6lsrv01password 'new-password'

Alternatively you can run:
/usr/bin/mysql_secure_installation

which will also give you the option of removingthe test
databases and anonymous user created bydefault.  This is
strongly recommended for production servers.

See the manual for more instructions.

You can start the MySQL daemon with:
cd /usr ; /usr/bin/mysqld_safe &

You can test the MySQL daemon withmysql-test-run.pl
cd /usr/mysql-test ; perl mysql-test-run.pl

Please report any problems with the/usr/bin/mysqlbug script!

                                                             [ OK  ]
Starting mysqld:                                          [  OK  ]


运行/usr/bin/mysql_secure_installation按提示设置好mysql中root用户密码，这里我设置为“xruan”。
创建数据库并授予用户权限
mysql> CREATE DATABASE vsftpd;
Query OK, 1 row affected (0.00 sec)

mysql> GRANT ALL ON vsftpd.* TO vsftpd@'%'IDENTIFIED BY 'passwd';
Query OK, 0 rows affected (0.00 sec)
mysql> use vsftpd
Database changed
创建表
mysql> create table users (
    ->id int AUTO_INCREMENT NOT NULL,
    ->name char(20) binary NOT NULL,
    ->password char(50) binary NOT NULL,
    ->primary key(id)
    ->);
Query OK, 0 rows affected (0.02 sec)
mysql> insert into users(name,password)values('xruan',password('xruan'));插入1行用户信息
Query OK, 1 row affected (0.00 sec)
mysql> insert into users(name,password)values('redhat',password('redhat')); 插入1行用户信息
Query OK, 1 row affected (0.00 sec)
mysql> FLUSH PRIVILEGES;    刷新权限
Query OK, 0 rows affected (0.00 sec)

第3步：配置vsftpd基于MySQL表的虚拟用户（在vsftp.xruan.com，192.168.0.12上执行）
首先必须完成基于MySQL表的认证，需要通过pam_mysql模块实现，先安装pam_mysql
先安装epel源
到官方网站下载epel源的rpm安装包
https://dl.fedoraproject.org/pub/epel/epel-release-latest-6.noarch.rpm
[iyunv@CentOS6lsrv02 ~]# rpm -ivh epel-release-latest-6.noarch.rpm
[iyunv@CentOS6lsrv02 ~]# yum install -y pam_mysql&> /dev/null
[iyunv@CentOS6lsrv02 pam.d]# rpm -q pam_mysql
pam_mysql-0.7-0.12.rc1.el6.x86_64

建立pam认证所需要的配置文件（/etc/pam.d/vsftpd.mysql）
[iyunv@CentOS6lsrv02 ~]# vi/etc/pam.d/vsftpd.mysql
auth required /lib64/security/pam_mysql.souser=vsftpd passwd=passwd host=192.168.0.11 db=vsftpd table=usersusercolumn=name passwdcolumn=password crypt=2
account required /lib64/security/pam_mysql.souser=vsftpd passwd=passwd host=192.168.0.11 db=vsftpd table=usersusercolumn=name passwdcolumn=password crypt=2

创建虚拟用户映射的系统用户
[iyunv@CentOS6lsrv02 ~]# useradd -r -s/sbin/nologin vuser -d /var/ftproot
[iyunv@CentOS6lsrv02 ~]# mkdir /var/ftproot
[iyunv@CentOS6lsrv02 var]# chown vuser:vuserftproot

编辑vsftpd配置文件 /etc/vsftpd/vsftpd.conf 如下设置：
listen=YES
anonymous_enable=YES
local_enable=YES
write_enable=YES
anon_upload_enable=NO
anon_mkdir_write_enable=NO
chroot_local_user=YES
guest_enable=YES
guest_username=vuser
pam_service_name=vsftpd.mysql
user_config_dir=/etc/vsftpd/vusers_config

为每个用户单独提供配置文件
user_config_dir=/etc/vsftpd/vusers_config  #在主配置文件（/etc/vsftpd/vsftpd.conf）中添加这个选项
[iyunv@CentOS6lsrv02 vsftpd]# mkdir/etc/vsftpd/vusers_config
[iyunv@CentOS6lsrv02 vsftpd]# vivusers_config/xruan      #设置xruan用户有所有权限
anon_upload_enable=YES
anon_mkdir_write_enable=YES
anon_other_write_enable=YES
[iyunv@CentOS6lsrv02 vsftpd]# vivusers_config/redhat     #设置anyisalin用户只有upload权限
anon_upload_enable=yes

重启vsftpd服务
[iyunv@CentOS6lsrv02 vsftpd]# service vsftpdrestart
Shutting down vsftpd:                                      [ OK  ]
Starting vsftpd for vsftpd:                                [  OK  ]

第4步：测试
[iyunv@CentOS6lsrv02 vsftpd]# lftp -u xruan192.168.0.12 使用xruan用户登录
Password:
lftp xruan@192.168.0.12:~> lcd /etc  
lcd ok, local cwd=/etc
lftp xruan@192.168.0.12:/> put fstab
1224 bytes transferred
lftp xruan@192.168.0.12:~> rm fstab
rm ok, `fstab' removed   可依删除文件

[iyunv@CentOS6lsrv02 vsftpd]# lftp -u redhat192.168.0.12       使用redhat用户登录
Password:
lftp redhat@192.168.0.12:~> lcd /etc
lcd ok, local cwd=/etc lftp redhat@192.168.0.12:/>put selinux/config
457 bytes transferred
lftp redhat@192.168.0.12:/> rm config
rm: Access failed: 550 Permission denied.(config)     不能删除文件
到此，实验成功！！！！！