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On Monday, July 7, 2003, at 11:22 PM, Kai wrote:
Hi list.
I am a newbie.I want to ask a question: under LVS/DR
mode,does it necessary that every real server must have a
global NIC ? I want to setup a network use LVS/DR and
public it,but I have only one IP.Does it possible ?
Thanks.
Yes, you can setup your cluster using LVS-DR and assign the RIP (Real
IP) on each server from the private address space (192.168.1.x). With
LVS-DR the VIP (Virtual IP) must be assigned to each cluster machine as
well. The VIP needs to be a real Internet routable IP.
So, setup you LVS cluster as follows
LVS Director #1 RIP = 192.168.1.1
LVS Director #1 VIP = 1.2.3.4
LVS Director #2 RIP = 192.168.1.2
LVD Director #2 VIP = 1.2.3.4
Use keepalived to manage the director active/passive state using VRRP
and to monitor the real servers
Real Server #1 (RS1) RIP = 192.168.1.11
RS1 VIP = 1.2.3.4
RS2 RIP = 192.168.1.12
RS2 VIP = 1.2.3.4
RS3 RIP = 192.168.1.13
RS3 VIP = 1.2.3.4
Remember, disable ARP on all real servers for the VIP address when
using LVS-DR. The only machine that should respond to ARP requests on
the VIP is the active LVS Director machine.
---
Kai
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