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@xxxxxxxxxx [mailto:linux-cluster-bounces@xxxxxxxxxx] 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 -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@xxxxxxxxx>
To: AKIN ÿffffffffffd6ZTOPUZ <akinoztopuz@xxxxxxxxx>; linux clustering <linux-cluster@xxxxxxxxxx>
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@xxxxxxxxx> 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 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
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
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Digimer
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