Centos lvs keepalived 安装配置

mwjhw216

下载ipvsadm和keepalived包到/usr/local/src
ln -s /usr/src/kernels/2.6.18-194.el5-x86_64/ /usr/src/linux
cd /usr/local/src/
tar -zxvf ipvsadm-1.25.tar.gz
cd ipvsadm-1.25
vi libipvs/Makefile
去掉netlink库的依赖：去掉libipvs/Makefile的CFLAGS += -DLIBIPVS_USE_NL，去掉Makefile的LIBS += -lnl
make;make install
ipvsadm -v检查是否安装完成
tar zxvf keepalived-1.2.1.tar.gz
cd keepalived-1.2.1
./configure
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/
vi /etc/keepalived/keepalived.conf


global_defs {  
   notification_email {  
         gcp1126@gmail.com
   }  
   notification_email_from root@localhost
   smtp_server 127.0.0.1  
   router_id LVS_DEVEL  （BACKUP：router_id LVS_DEVEL_2）  
}  
vrrp_instance VI_1 {  
    state MASTER  (BACKUP改为BACKUP)            
    interface eth0  
    virtual_router_id 55
    priority 100  (BACKUP改为99)
    advert_int 1  
    authentication {  
        auth_type PASS  
        auth_pass kk1111  
    }  
    virtual_ipaddress {  
        192.168.8.3   
    }  
}  
virtual_server 192.168.8.3 3306 {  
    delay_loop 6
    lb_algo wrr                    
    lb_kind DR                    
    persistence_timeout 60
    protocol TCP                  
    real_server 192.168.8.31 3306 {  
        weight 3                 
        TCP_CHECK {  
        connect_timeout 10         
        nb_get_retry 3  
        delay_before_retry 3  
        connect_port 3306
        }  
    }  
    real_server 192.168.8.32 3306 {  
        weight 3
        TCP_CHECK {  
        connect_timeout 10  
        nb_get_retry 3  
        delay_before_retry 3  
        connect_port 3306
        }  
     }  
}


service keepalived start
ipvsadm -L -n




然后在real_server上配置虚拟IP
#!/bin/bash
#description:start realserver
#chkconfig 235 26 26
VIP1=192.168.8.6
#/etc/rc.d/init.d/functions
case "$1" in
start)
echo " start LVS of REALServer"
/sbin/ifconfig lo:0 $VIP1 broadcast $VIP1 netmask 255.255.255.255 up
echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
;;
stop)
/sbin/ifconfig lo:0 down
echo "close LVS Directorserver"
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "0" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/all/arp_announce
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
esac
将此脚本加入到开机启动。