#下载目录
cd /usr/local/src/
#下载
wget http://www.keepalived.org/software/keepalived-1.2.19.tar.gz
#解压
sudo tar -zxvf keepalived-1.2.19.tar.gz
#切换目录
cd keepalived-1.2.19/
#编译
./configure --prefix=/usr/local/keepalived
#安装
make && make install
# 拷贝执行文件
cp /usr/local/keepalived/sbin/keepalived /usr/sbin/
# 将init.d文件拷贝到etc下,加入开机启动项
cp /usr/local/keepalived/etc/rc.d/init.d/keepalived /etc/init.d/keepalived
# 将keepalived文件拷贝到etc下
cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
# 创建keepalived文件夹
mkdir -p /etc/keepalived
# 将keepalived配置文件拷贝到etc下
cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf
# 添加可执行权限
chmod +x /etc/init.d/keepalived
#添加系统服务
chkconfig --add keepalived
#开机自启
chkconfig keepalived on

! Configuration File for keepalivedglobal_defs {}vrrp_script chk_health {script "[[ `ps -ef | grep nginx | grep -v grep | wc -l` -ge 2 ]] && exit 0 || exit 1"interval 1    #每隔1秒执行上述的脚本，去检查用户的程序ngnixweight -2
}vrrp_instance VI_1 {state MASTER  #指定A节点为主节点 备用节点上设置为BACKUP即可interface ens33  #绑定虚拟IP的网络接口virtual_router_id 51 ##VRRP组名，两个节点的设置必须一样，以指明各个节点属于同一VRRP组priority 100 #主节点的优先级（1-254之间），备用节点必须比主节点优先级低advert_int 1 #组播信息发送间隔，两个节点设置必须一样authentication { #设置验证信息，两个节点必须一致auth_type PASSauth_pass 1111}track_script { #心跳检测chk_health}virtual_ipaddress { #指定虚拟IP, 两个节点设置必须一样192.168.182.139/24}notify_master "/usr/local/nginx/sbin/nginx"notify_backup "/usr/local/nginx/sbin/nginx -s stop &&  /usr/local/nginx/sbin/nginx"notify_fault "/usr/local/nginx/sbin/nginx -s stop"
}

! Configuration File for keepalivedglobal_defs {}vrrp_script chk_health {script "[[ `ps -ef | grep nginx | grep -v grep | wc -l` -ge 2 ]] && exit 0 || exit 1"interval 1    #每隔1秒执行上述的脚本，去检查用户的程序ngnixweight -2
}vrrp_instance VI_1 {state BACKUP  #指定A节点为主节点 备用节点上设置为BACKUP即可interface ens33  #绑定虚拟IP的网络接口virtual_router_id 51 ##VRRP组名，两个节点的设置必须一样，以指明各个节点属于同一VRRP组priority 99 #主节点的优先级（1-254之间），备用节点必须比主节点优先级低advert_int 1 #组播信息发送间隔，两个节点设置必须一样authentication { #设置验证信息，两个节点必须一致auth_type PASSauth_pass 1111}track_script { #心跳检测chk_health}virtual_ipaddress { #指定虚拟IP, 两个节点设置必须一样192.168.182.139/24}notify_master "/usr/local/nginx/sbin/nginx"notify_backup "/usr/local/nginx/sbin/nginx -s stop &&  /usr/local/nginx/sbin/nginx"notify_fault "/usr/local/nginx/sbin/nginx -s stop"
}