在设置LVS中遇到问题,把VIP设置为实际的对外IP时不能正常运行

Submitted by jatic on 周三, 2007-04-11 06:01

Virtual IP： 192.168.136.10
Load Balancer： 192.168.136.11
Backup： 192.168.136.12
Real Server 1： 192.168.136.101
Real Server 2： 192.168.136.102
Real Server 3： 192.168.136.103

这Virtual IP的作用是什么？只是一个虚拟的IP，还是一台真实的机器？

在设置LVS中遇到问题,把VIP设置为实际的对外IP时不能正常运行

Forums:

Anonymous (没有被验证)

周四, 2007-04-12 02:18

只是集群对外的统一IP

pei5

周四, 2007-04-12 03:53

Virtual IP是客户所要浏览网站时用的ip,在dns域名解析指向设定时,也得指向此ip,才能保证客户使用域名访问网站时能正常访问.
Load Balancer 的ip是用来管理的,当然也可以不设置,因为在对外的interface上还要设置Virtual IP,在Load Balancer 上分别指向realserver的ip.
而backup应该只是一个备份机,跟集群并没有很强的依赖性,可以独立出去.

永远隐身黑暗，那里才是我的家...

Anonymous (没有被验证)

周四, 2007-04-19 03:12

更糊涂了 ，Virtual IP是用户网站浏览是访问的IP,
但是这个IP要真是存在，要在一个网卡上指定地址，网管，DNS什么的，周末指定啊，指定到哪哪个网卡啊！

Anonymous (没有被验证)

周三, 2008-10-29 00:37

VIP 就是一个真实ip，只不过逻辑上，外面人看到的是一个ip，里面却是好几台机器，所以把它叫做VIP，其实并不是一个什么虚拟IP，而是有血有肉的真实IP。 是个概念，不是新技术。

jatic

周四, 2007-04-12 10:01

我把这个VIP改为了对外的IP,也就是网卡一的IP地址,这是个真实的IP (192.168.1.131)

另外一网卡就留给内用
192.168.1.132

realserver IP是 192.168.1.121 ,不知道这时的脚本配置文件应该怎么样的呢,以下是我使用脚本中的一部分:

Directorserver 脚本 >>>>>>
VIP=192.168.1.131
/sbin/ifconfig eth0:0 $VIP broadcast $VIP netmask 255.255.255.255 up
/sbin/route add -host $VIP dev eth0:0

realserver 脚本 >>>>>>
VIP=192.168.1.131
/sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up
/sbin/route add -host $VIP dev lo:0

但是这种做法,系统并不能正常运行,刚配置好的30秒钟内可以正常运行,之后就不行了.指向132 时正常,指向 121 时就不能正常返回

#ipvsadm -Lcn
pro expire state source virtual destination
TCP 09:58 ESTABLISHED 192.168.1.100:1670 192.168.1.131:80 192.168.1.121:80
TCP 10:00 ESTABLISHED 192.168.1.100:1672 192.168.1.131:80 192.168.1.121:80
TCP 10:03 ESTABLISHED 192.168.1.100:1674 192.168.1.131:80 192.168.1.121:80
TCP 00:54 SYN_RECV 192.168.1.100:1708 192.168.1.131:80 192.168.1.121:80
TCP 09:55 ESTABLISHED 192.168.1.100:1668 192.168.1.131:80 192.168.1.121:80

另一种做法,把VIP改成是纯虚拟的IP,那很正常
不知道什么原因

Anonymous (没有被验证)

周三, 2014-03-05 14:26

Shoot, so that's that one sussppeo.

Anonymous (没有被验证)

周六, 2014-12-20 01:48

Hey, sublte must be your middle name. Great post!

Anonymous (没有被验证)

周二, 2014-12-23 19:30

Thnkas for taking the time to post. It's lifted the level of debate

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