http://seanlook.com/2015/05/18/nginx-keepalived-ha/
http://blog.csdn.net/conquer0715/article/details/47955553 keep配置与使用
http://blog.csdn.net/zll_liang/article/details/8001260 CSND keep的配置与使用
http://www.keepalived.org/pdf/sery-lvs-cluster.pdf keep官方文档
http://www.cnblogs.com/mchina/archive/2012/08/27/2644391.html keepalived+lvs+nat 博客园
http://www.cnblogs.com/mchina/archive/2012/08/27/2644391.html
http://atong.blog.51cto.com/2393905/1351709
sed -i 's/\r$//' build.sh 报错 “build.sh /bin/bash^M: 坏的解释器：没有那个文件或目录”
http://newthink.blog.51cto.com/872263/1775489 tomcat
ps -ef | grep "nginx" 查看进程
ps -ef | grep "nginx: master process"| grep -v grep
http://www.runoob.com/linux/linux-shell-basic-operators.html Linux教程
Reids Keepalived负载均衡 http://sfujiwara.hatenablog.com/entry/20120802/1343880266
http://www.54yunwei.com/?p=80
http://www.178linux.com/19183
http://www.discuz.net/thread-3513163-1-1.html
4)软件包信息查询
#列出资源库中所有可以安装或更新的rpm包
yum list
#列出资源库中特定的可以安装或更新以及已经安装的rpm包
yum list firfox*
N:可以在rpm包名中使用通配符,查询类似的rpm包
#列出资源库中所有可以更新的rpm包
yum list updates
#列出已经安装的所有的rpm包
yum list installed