1 [root@RServer01 ~]# yum -y install httpd  2 [root@RServer01 ~]# service iptables stop  3 [root@RServer01 ~]# chkconfig iptables off  4 [root@RServer01 ~]# vi /etc/selinux/config  5 SELINUX=disabled  6 [root@master ~]# setenforce 0			                 #关闭SELinux及防火墙

1 firewall-cmd --permanent–-add-service=keepalived  2 firewall-cmd --reload

1 [root@lvsmaster ~]# yum -y install gcc gcc-c++ make kernel-devel kernel-tools kernel-tools-libs kernel libnl libnl-devel libnfnetlink-devel openssl-devel wget openssh-clients	        #安装基础环境及依赖  2 [root@lvsmaster ~]# ln -s /usr/src/kernels/`uname -r` /usr/src/linux  3 [root@lvsmaster ~]# wget http://www.keepalived.org/software/keepalived-1.3.6.tar.gz  4 [root@lvsmaster ~]# tar -zxvf keepalived-1.3.6.tar.gz	        #编译安装Keepalived  5 [root@lvsmaster ~]# cd keepalived-1.3.6/  6 [root@lvsmaster keepalived-1.3.6]# ./configure --prefix=/usr/local/keepalived  7 [root@Master keepalived-1.3.9]# make && make install

1 [root@lvsmaster ~]# mkdir /etc/keepalived  2 [root@lvsmaster ~]# cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/  3 [root@lvsmaster ~]# cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/  4 [root@lvsmaster ~]# cp /usr/local/keepalived/sbin/keepalived /usr/sbin/  5 [root@lvsmaster ~]# vi /etc/init.d/keepalived		#创建Keepalived启动脚本，如附件  6 #!/bin/sh  7 #  8 # keepalived   High Availability monitor built upon LVS and VRRP  9 # 10 # chkconfig:   - 86 14 11 # description: Robust keepalive facility to the Linux Virtual Server project \ 12 #              with multilayer TCP/IP stack checks. 13  14 ### BEGIN INIT INFO 15 # Provides: keepalived 16 # Required-Start: $local_fs $network $named $syslog 17 # Required-Stop: $local_fs $network $named $syslog 18 # Should-Start: smtpdaemon httpd 19 # Should-Stop: smtpdaemon httpd 20 # Default-Start: 21 # Default-Stop: 0 1 2 3 4 5 6 22 # Short-Description: High Availability monitor built upon LVS and VRRP 23 # Description:       Robust keepalive facility to the Linux Virtual Server 24 #                    project with multilayer TCP/IP stack checks. 25 ### END INIT INFO 26  27 # Source function library. 28 . /etc/rc.d/init.d/functions 29  30 exec="/usr/sbin/keepalived" 31 prog="keepalived" 32 config="/etc/keepalived/keepalived.conf" 33  34 [ -e /etc/sysconfig/$prog ] && . /etc/sysconfig/$prog 35  36 lockfile=/var/lock/subsys/keepalived 37  38 start() { 39     [ -x $exec ] || exit 5 40     [ -e $config ] || exit 6 41     echo -n $"Starting $prog: " 42     daemon $exec $KEEPALIVED_OPTIONS 43     retval=$? 44     echo 45     [ $retval -eq 0 ] && touch $lockfile 46     return $retval 47 } 48  49 stop() { 50     echo -n $"Stopping $prog: " 51     killproc $prog 52     retval=$? 53     echo 54     [ $retval -eq 0 ] && rm -f $lockfile 55     return $retval 56 } 57  58 restart() { 59     stop 60     start 61 } 62  63 reload() { 64     echo -n $"Reloading $prog: " 65     killproc $prog -1 66     retval=$? 67     echo 68     return $retval 69 } 70  71 force_reload() { 72     restart 73 } 74  75 rh_status() { 76     status $prog 77 } 78  79 rh_status_q() { 80     rh_status &>/dev/null 81 } 82  83  84 case "$1" in 85     start) 86         rh_status_q && exit 0 87         $1 88         ;; 89     stop) 90         rh_status_q || exit 0 91         $1 92         ;; 93     restart) 94         $1 95         ;; 96     reload) 97         rh_status_q || exit 7 98         $1 99         ;;100     force-reload)101         force_reload102         ;;103     status)104         rh_status105         ;;106     condrestart|try-restart)107         rh_status_q || exit 0108         restart109         ;;110     *)111         echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload}"112         exit 2113 esac114 exit $115 [root@lvsmaster ~]# chmod u+x /etc/rc.d/init.d/keepalived116 [root@lvsmaster ~]# vi /etc/keepalived/keepalived.conf117 ! Configuration File for keepalived118 ……119    smtp_connect_timeout 30120    router_id LVS_Master		#表示运行Keepalived服务器的一个标识121 }122 123 vrrp_instance VI_1 {124     state MASTER			#指定Keepalived的角色125     interface eth0			#指定HA监测网络的接口126     virtual_router_id 51            #同一个vrrp实例使用唯一的标识，即同一个vrrp_instance下，Master和Backup必须是一致的128     priority 100			#定义优先级，数值越大，优先级越高129     advert_int 1			#设定Mater和Backup负载均衡器之间同步检查时间间隔130     authentication {131         auth_type PASS132         auth_pass 1111133     }134     virtual_ipaddress {135         172.24.8.100		#设置虚拟IP地址136     }137 }138 139 virtual_server 172.24.8.100 80 {140     delay_loop 6			#运行情况检查时间141     lb_algo rr			#设置负载均衡算法142     lb_kind DR			#设置LVS实现负载均衡的机制，有NAT/DR/TUN143     persistence_timeout 50		#会话保持时间144     protocol TCP 			#指定转发类型145 146     real_server 172.24.8.12 80 {147         weight 1			#服务节点的权值，数值越大，权值越高148         TCP_CHECK {149         connect_timeout 5		#表示无响应超时时间，单位是秒150         nb_get_retry 3		#表示重试次数151         delay_before_retry 3	#表示重试间隔152         }153     }154 real_server 172.24.8.13 80 {155         weight 1156         TCP_CHECK {157         connect_timeout 5158         nb_get_retry 3159         delay_before_retry 3160      }161 }162 }163 [root@lvsmaster ~]# scp /etc/keepalived/keepalived.conf 172.24.8.11:/etc/keepalived/keepalived.conf164 [root@lvsbackup ~]# vi /etc/keepalived/keepalived.conf165 state BACKUP166 priority 80

1 [root@lvsmaster ~]# yum -y install ipvsadm

1 [root@RServer01 ~]# vi /etc/init.d/lvsrs  2 [root@RServer01 ~]# chmod u+x /etc/init.d/lvsrs

1 [root@RServer01 ~]# service httpd start  2 [root@RServer01 ~]# chkconfig httpd on  3 [root@RServer02 ~]# service httpd start  4 [root@RServer02 ~]# chkconfig httpd on  5   6 [root@lvsmaster ~]# service keepalived start  7 [root@lvsmaster ~]# chkconfig keepalived on  8 [root@lvsbackup ~]# service keepalived start  9 [root@lvsbackup ~]# chkconfig keepalived on 10  11 [root@RServer01 ~]# service lvsrs start 12 [root@RServer02 ~]# service lvsrs start

1 [root@RServer01 ~]# echo 'This is Real Server01!' >>/var/www/html/index.html  2 [root@RServer01 ~]# echo 'This is Real Server02!' >>/var/www/html/index.html

1 [root@RServer01 ~]# service httpd stop