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Re: [Linux-cluster] help



Hi

 

Is the cman process alive? ( service cman status)

 

try to get more information with admin cluster commands:

-          cman_tool nodes

-          cman_tool status

-          clustat

-          clustat –s sap

-           

Regards

 

De: linux-cluster-bounces redhat com [mailto:linux-cluster-bounces redhat com] En nombre de AKIN ÿffffffffffd6ZTOPUZ
Enviado el: miércoles, 30 de mayo de 2012 10:21
Para: emmanuel segura; linux clustering
Asunto: Re: [Linux-cluster] help

 

Hello Emmanuel

 

nodes network is below:

 

-two nodes interconnect via cross cable

-1 interface for iscsi (logical volumes)

-1 interface for  public network

 

ı checked again physicall cables and not seen any problem 

 

From: emmanuel segura <emi2fast gmail com>
To: AKIN ÿffffffffffd6ZTOPUZ <akinoztopuz yahoo com>; linux clustering <linux-cluster redhat com>
Sent: Wednesday, May 30, 2012 11:00 AM
Subject: Re: [Linux-cluster] help

 

Hello AKIN

Are you sure it's not a connection problem?

2012/5/30 AKIN ÿffffffffffd6ZTOPUZ <akinoztopuz yahoo com>

Hello  Digimer

 

I am using qdisk with <quorumd interval="4" label="quorum" min_score="1" tko="15" votes="1" master_wins="1"/>

not heursitic.qdisk   is suggested for avoidin split brain

 

in this configuration my problem is :  node1 is master and continuosly node2 killed by node1

its connection is over iscsi.

ı thınk it is timing problem

doyou have any idea?

 

 

var/log/messages like that:

 

sapclsn2 clurgmgrd[8761]: <notice> Service service:sap is stopped
openais[6755]: [CMAN ] cman killed by node 1 because we were killed by cman_tool or other application 

openais[6755]: [SERV ] AIS Executive exiting (reason: CMAN kill requested, exiting). 
fenced[6788]: cluster is down, exiting

 

From: Digimer <lists alteeve ca>
To: AKIN ÿffffffffffd6ZTOPUZ <akinoztopuz yahoo com>; linux clustering <linux-cluster redhat com>
Sent: Tuesday, May 29, 2012 10:46 PM
Subject: Re: [Linux-cluster] help


On 05/29/2012 02:54 AM, AKIN ÿffffffffffd6ZTOPUZ wrote:
>    Hello

> I need configuration steps about 2 nodes  rhel(5) cluster with quorum disk .

> my config  like that  :

> each node has 1 vote
> quorum disk has 1 vote
> cman expected vote is 3
> quorum will be protected in 2 votes  so when one node is down cluster
> will be up

> whats other things should I care about it  in cluster config?

> thanks in advance

First off, I *strongly* recommend using RHEL6, not 5. There have been
many improvements, plus, EL6 will be supported longer.

What are you trying to do with your cluster? I suspect that a quorum
disk is not necessary, though if you have a SAN anyway, I wouldn't argue
against using it. Unless you need the heuristics though, it's probably
not needed. You can safely build a 2-node cluster, you just need to make
sure your fence devices work (which is needed, regardless).

I have a tutorial that shows how to implement a cluster using cman,
clvmd and other components. It also discusses the cluster components
from a high-level, which may help.

https://alteeve.com/w/2-Node_Red_Hat_KVM_Cluster_Tutorial


--
Digimer
Papers and Projects: https://alteeve.com


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