LVS+Keepalived+Squid+Nginx高可用负载均衡缓存配置(2)

一、LVS+Keepalived安装

1、下载源码包 
cd /usr/src/  
wget    
wget  

2、建立软链接 
ln -s /usr/src/kernels/2.6.* /usr/src/linux 

3、安装ipvsadm、keepalived 
cd /usr/src/ && tar xzvf ipvsadm-1.24.tar.gz &&cd ipvsadm-1.24  
&& make && make install 
cd /usr/src/  &&  tar -xzvf keepalived-1.1.15.tar.gz  &&  
cd keepalived-1.1.15  && ./configure  &&  make  &&  make install 

4、配置keepalived 
cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/  
cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/  
mkdir -p /etc/keepalived  
cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/ 
cp /usr/local/sbin/keepalived /usr/sbin/ 

5、修改keepalived配置文件
vi /etc/keepalived/keepalived.conf，根据实际情况修改：

! Configuration File for keepalived       global_defs {      notification_email {         wgkgood@163.com      }      notification_email_from wgkgood@163.com      smtp_server 127.0.0.1      smtp_connect_timeout 30      router_id LVS_DEVEL   }       # VIP1   vrrp_instance VI_1 {       state MASTER //备份服务器改成BACKUP       interface eth0       lvs_sync_daemon_inteface eth0       virtual_router_id 51       priority 100 //备份服务器改成90       advert_int 5       authentication {           auth_type PASS           auth_pass 1111       }       virtual_ipaddress {           192.9.117.145 //VIP地址       }   }   virtual_server 192.9.117.145 80 {       delay_loop 6       lb_algo rr //lvs算法       lb_kind DR      persistence_timeout 60   protocol TCP           real_server 192.9.117.141 80 {           weight 100           TCP_CHECK {           connect_timeout 10           nb_get_retry 3           delay_before_retry 3           connect_port 80           }       }    real_server 192.9.117.142 80 {           weight 100           TCP_CHECK {           connect_timeout 10           nb_get_retry 3           delay_before_retry 3           connect_port 80           }       }   }  

同理Lvs_backup也如上安装，并修改参数，Lvs+keepalived配置完毕后，启动keepalived, /etc/init.d/keepalived start 即可！然后在squid_1、squid_2分别执行realserver.sh脚本