这是生产环境中一个项目,该公司的网站经常受到同行的ddos***,故需要搭建一个环境让***者***时候转到公司的假网站上。我的任务就是搭建抗***的假网站。
我的设计这样的lvs(+keepalived组成高可用)+LNMP+组成公司的假网站。总过8台机器6台web服务器2台lvs
为了保密,ip和真正地web都不。。。web只用两台代替。
1,配置准备
centos下的yum环境,keepalived-1.1.17.tar.gz,ipvsadm-1.24.tar.gz(这两个包可用在网上下载,也可以在下面的链接上下http://www.kuaipan.cn/file/id_4516853896446486.html
2,安装配置
配置时候要确保下面的连接正常ln -sv /usr/src/kernels/2.6.32-220.el6.i686/ linux,因为keepalived-1.1.17.tar.gz,ipvsadm-1.24.tar.gz这两个包的编译都依赖开发的内核。如果出现以下情况:

[root@localhost src]# ll
total 8
drwxr-xr-x 7 root root 4096 Mar  1 03:01 redhat
[root@localhost src]#
因为在装系统的时候没有装kernels的开发包这时候需要自己装
yum install kernel*
 
安装ipvsadm-1.24.tar.gz
tar xf ipvsadm-1.24.tar.gz
cd ipvsadm-1.24
make && make install
安装keepalived-1.1.17.tar.gz
tar xf keepalived-1.1.17.tar.gz
cd keepalived-1.1.17
 ./configure
确保./configure的结果是下面样子
Keepalived configuration
------------------------
Keepalived version       : 1.1.17
Compiler                 : gcc
Compiler flags           : -g -O2
Extra Lib                : -lpopt -lssl -lcrypto
Use IPVS Framework       : Yes
IPVS sync daemon support : Yes
Use VRRP Framework       : Yes
Use LinkWatch            : No
Use Debug flags          : No
make && make install
cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/
mkdir /etc/keepalived
cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/
cp /usr/local/sbin/keepalived /usr/sbin/
3,配置keepalived的主备配置文件
vim /etc/keepalived/keepalived.conf
#######MASTER#####################
! Configuration File for keepalived
global_defs {
   notification_email {
        470499989@qq.com
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 127.0.0.1
   router_id LVS_DEVEL
}
vrrp_instance VI_1 {
    state MASTER
    interface eth0
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.1.200
    }
}
virtual_server 192.168.1.200 80 {
    delay_loop 6
    lb_algo rr
    lb_kind DR
    persistence_timeout 50
    protocol TCP

    real_server 192.168.1.117 80 {
        weight 3
        TCP_CHECK {
        connect_timeout 10
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
    }
    real_server 192.168.1.118 80 {
        weight 3
        TCP_CHECK {
        connect_timeout 10
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
    }
}
 
#################BACKUP#########################
! Configuration File for keepalived
global_defs {
   notification_email {
        470499989@qq.com
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 127.0.0.1
   router_id LVS_DEVEL
}
vrrp_instance VI_1 {
    state BACKUP
    interface eth0
    virtual_router_id 51
    priority 80
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.1.200
    }
}
virtual_server 192.168.1.200 80 {
    delay_loop 6
    lb_algo rr
    lb_kind DR
    persistence_timeout 50
    protocol TCP

    real_server 192.168.1.117 80 {
        weight 3
        TCP_CHECK {
        connect_timeout 10
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
    }
    real_server 192.168.1.118 80 {
        weight 3
        TCP_CHECK {
        connect_timeout 10
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
    }
}
如果在执行service keepalived start,启动不起来需要看日志
# tail /var/log/messages
Mar 30 12:05:15 localhost Keepalived_vrrp: bogus VRRP packet received on eth0 !!!
Mar 30 12:05:15 localhost Keepalived_vrrp: VRRP_Instance(VI_1) Dropping received VRRP packet...
Mar 30 12:05:16 localhost Keepalived_vrrp: ip address associated with VRID not present in received packet : -939415360
Mar 30 12:05:16 localhost Keepalived_vrrp: one or more VIP associated with VRID mismatch actual MASTER advert
#######如果是以上日志就是因为你所在的环境还有其他人在做keepalived,需要修改虚拟路由标识,因为默认是51.
#######如果还启动不了,那么你要是用的虚拟机做的实验的话,看看你虚拟机的时间date,这一点对虚拟机很重要的哟。
 
附加keepalived配置文件的解读
#####配置文件解读#####
! Configuration File for keepalived
global_defs {
   notification_email {               ###定义接收信息的邮件地址
     acassen@firewall.loc
     failover@firewall.loc
     sysadmin@firewall.loc
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 192.168.200.1         ####定义用于监控的smtp地址
   smtp_connect_timeout 30
   router_id LVS_DEVEL                ###定义lvs负载均衡标示
}
vrrp_instance VI_1 {                  ###定义一个vrrp组
    state MASTER   ###本机在该组中的所属的角色,只有MASTER和BACKUP两种状态,并且需要大写这些单词。
    interface eth0   ###对外提供服务的网络接口
    virtual_router_id 51  ###虚拟路由标识
    priority 100   ###本机的在vrrp组的优先级
    advert_int 1   ###主备同步检查时间间隔
    authentication {   ###主备之间通信验证设置
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {  ###虚拟ip地址,也就是vip地址。
        192.168.200.16
    }
}
virtual_server 192.168.200.100 443 { ###虚拟服务器定义,注意是ip+端口号
    delay_loop 6   ###健康检查时间间隔,单位是秒。
    lb_algo rr   ###负载均衡调度算法,互联网应用常使用wlc。
    lb_kind NAT   ###负载均衡转发规则,一般包括DR、NAT、TUN3种。常用DR模型。
    nat_mask 255.255.255.0  ###DR模式这项没有
    persistence_timeout 50  ###会话保持时间,单位是秒。
    protocol TCP   ###转发协议
    real_server 192.168.201.100 443 { ###定义realserver,real_server的值包括ip地址和端口号
        weight 1    ###该realserver的权重
        SSL_GET {
            url {
              path /
              digest ff20ad2481f97b1754ef3e12ecd3a9cc
            }
            url {
              path /mrtg/
              digest 9b3a0c85a887a256d6939da88aabd8cd
            }
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }
}
 

本文出自 “gaby” 博客,请务必保留此出处http://gabylinux.blog.51cto.com/1593644/822168