一 基础环境 1.1 IP规划
OS：CentOS 6.8 64位
节点类型 IP规划 主机名 类型 主 Director Server eth0：172.24.8.10 DR1 公共IP eth1：192.168.56.100 心跳 私有IP eth0:0：172.24.8.100 无 虚拟IP 主 Director Server eth0：172.24.8.11 DR2 公共IP eth1：192.168.56.101 心跳 私有IP Real Server 1 eth0：172.24.8.12 rs1 公共IP lo:0：172.24.8.100 无 虚拟IP Real Server 1 eth0：172.24.8.13 rs2 公共IP lo:0：172.24.8.100 无 虚拟IP
操作略，具体可参考N01.1.1-常见服务《NTP》。
注意：为了保证集群的稳定性，强烈建议在所有节点均部署NTP同步服务，保证所有时钟一致。
2.2 部署httpd集群[root@RServer01 ~]# yum -y install httpd
[root@RServer01 ~]# service iptables stop
[root@RServer01 ~]# chkconfig iptables off
[root@RServer01 ~]# vi /etc/selinux/config
SELINUX=disabled
[root@master ~]# setenforce 0 #关闭SELinux及防火墙
注意：后端所有Real服务器节点都需要安装，用于模拟测试。
建议：为了测试方便，建议所��节点关闭防火墙和SELinux，若未关闭防火墙也可通过下列方式放通：
firewall-cmd --permanent–-add-service=keepalived
firewall-cmd --reload
2.3 安装Keepalived
[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
[root@lvsmaster ~]# ln -s /usr/src/kernels/`uname -r` /usr/src/linux
[root@lvsmaster ~]# wget
[root@lvsmaster ~]# tar -zxvf keepalived-1.3.6.tar.gz #编译安装Keepalived
[root@lvsmaster ~]# cd keepalived-1.3.6/
[root@lvsmaster keepalived-1.3.6]# ./configure --prefix=/usr/local/keepalived
[root@Master keepalived-1.3.9]# make && make install
注意：CentOS6.8安装高于1.3.6版本会出现未知错误。
2.4 添加启动相关服务[root@lvsmaster ~]# mkdir /etc/keepalived
[root@lvsmaster ~]# cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/
[root@lvsmaster ~]# cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
[root@lvsmaster ~]# cp /usr/local/keepalived/sbin/keepalived /usr/sbin/
[root@lvsmaster ~]# vi /etc/init.d/keepalived #创建Keepalived启动脚本，如附件
#!/bin/sh
#
# keepalived High Availability monitor built upon LVS and VRRP
#
# chkconfig: - 86 14
# description: Robust keepalive facility to the Linux Virtual Server project \
# with multilayer TCP/IP stack checks.
### BEGIN INIT INFO
# Provides: keepalived
# Required-Start: $local_fs $network $named $syslog
# Required-Stop: $local_fs $network $named $syslog
# Should-Start: smtpdaemon httpd
# Should-Stop: smtpdaemon httpd
# Default-Start:
# Default-Stop: 0 1 2 3 4 5 6
# Short-Description: High Availability monitor built upon LVS and VRRP
# Description: Robust keepalive facility to the Linux Virtual Server
# project with multilayer TCP/IP stack checks.
### END INIT INFO
# Source function library.
. /etc/rc.d/init.d/functions
exec="/usr/sbin/keepalived"
prog="keepalived"
config="/etc/keepalived/keepalived.conf"
[ -e /etc/sysconfig/$prog ] && . /etc/sysconfig/$prog
lockfile=/var/lock/subsys/keepalived