centos6.2,64位系统搭建LVS+Keepalived(DR模式).docx

centos6.2,64位系统搭建LVS+Keepalived（DR模式） 2013-01-15 10:14:57标签：centos6.264位系统搭建LVS+Keepalived（DR模式）原创作品，允许转载，转载时请务必以超链接形式标明文章 原始出处 、作者信息和本声明。否则将追究法律责任。/1054716/1118447? ? ?最近公司网站访问又见瓶颈，为了缓解压力，决定用LVS+Keepalived来实现负载均衡.在前面的文章中已经写过了用NAT模式来实现负载均衡 /1054716/716138，而今天用的是DR模式，其实NAT跟DR模式，各有优缺点，根据实际情况来选择适合自己的。下面看下具体步骤以及注意事项。拓扑图如下：?? ? 首先看下我用的系统，系统为centos6.2，64位系统，用getconf LONG_BIT,和uname -a都可以查看 [root@localhost src]# getconf LONG_BIT64[root@localhost src]# uname -aLinux localhost 2.6.32-279.19.1.el6.x86_64 #1 SMP Wed Dec 19 07:05:20 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux? ? ?然后，分析下搭建这个LVS+Keepalived（DR）需要的关键步骤及注意事项，第一、DR模式主要是靠虚拟IP来实现，那么每台机器都需要建立一个虚拟IP，这个是必需的，第二、要注意的就是popt-static-1.13-7.el6.x86_64.rpm这个包，不装这个包，安装ipvs的时候会报错，第三、就是一些零碎的配置。[root@localhost src]# wget /software/keepalived-1.2.2.tar.gz[root@localhost src]# wget /software/kernel-2.6/ipvsadm-1.26.tar.gz[root@localhost src]# wget /centos/6/os/x86_64/Packages/popt-static-1.13-7.el6.x86_64.rpm? ? ?然后，在LVS主跟备份上安装[root@localhost src]# rpm -ivh popt-static-1.13-7.el6.x86_64.rpm [root@localhost src]# yum -y install kernel-devel make gcc openssl-devel libnl* popt*[root@localhost src]# ln -s /usr/src/kernels/2.6.32-220.13.1.el6.x86_64/ /usr/src/linux[root@localhost src]# tar -zxvf ipvsadm-1.26.tar.gz[root@localhost src]# cd ipvsadm-1.26/[root@localhost ipvsadm-1.26]# make[root@localhost ipvsadm-1.26]# make install[root@localhost ipvsadm-1.26]# cd ..[root@localhost src]# tar -zxvf keepalived-1.2.2.tar.gz -C /usr/src/[root@localhost src]# cd keepalived-1.2.2/[root@localhost keepalived-1.2.2]# ./configure[root@localhost keepalived-1.2.2]# make[root@localhost keepalived-1.2.2]# make install[root@localhost keepalived-1.2.2]# cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/[root@localhost keepalived-1.2.2]# cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/[root@localhost keepalived-1.2.2]# mkdir /etc/keepalived[root@localhost keepalived-1.2.2]# cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/[root@localhost