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Re: [Linux-cluster] sharing same ip with 2 services on two nodes



Hi,

thanks for your answer

I suspected  so,

can I say as an axiom: One service needs One IP? ( One man, One vote ;-) )

and if is this true, has it sense to configure ip resources as shared? it must be better to configure as a private resource, isnt it?

Greetings,

ESG

2009/4/17 Juan Ramon Martin Blanco <robejrm gmail com>


On Fri, Apr 17, 2009 at 12:57 PM, ESGLinux <esggrupos gmail com> wrote:
Hello all,

I have a doubt about using the same service ip with two diferent services in two diferent nodes of my two-nodes-cluster. 


I´ll explain it a litle:

I have two services: BBDD and HTTPD

I have configured a shared IP: 192.168.1.100
Hi,
You _must_ use a different  IP, cannot have the same IP on different machines.

Greetings,
Juanra

two nodes: node1 and node2.

When I run the two services on node1 all runs ok. If I try to relocate one service, with

clusvcadm -r BBDD -m node2

it fails with the error:
 in.rdiscd[4805]: setsockopt (IP_ADD_MEMBERSHIP): Address already in use
 in.rdiscd[4805]: Failed joining addresses

I suposse that is because one services is on node1 with the ip and the other trys to run in node2 with the same ip.

So my question is if it is possible to run the services this way or I need an ip per service?
(I have tested that with 2 diferent ips I can run BBDD on node1 an HTTPD on node2)

Thanks in advance

ESG


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