Hi everybody,
first, i'll explain my goal, and the way i think i'm suppose to do
this, then i'll explain my probleme, but please, tell me if i'm wrong
with the lead i follow.
I want to make a xen architecture stable, redoundant with no single
point of failure.
So in order to make this, i think i've to have 2 dom0 linked by
heartbeat, accessing to a storage fileserver (where the domU are
stored) by ISCSI (software sicsi, not hardware), and i should make
clustered logical volume (with clvmd-lvm2) on the exported iscsi
partition. And i will also make drbd between 2 filesservers.
So my problem, is at the begining of my quest (well, i allready made
work xen with iscsi), when i want to use clvm on the exported iscsi
partition. Since I cant start clvmd, (it tells me "clvmd could not
connect to cluster manager") i work on configuring cman, i must do
that, no? (no cman = no clvmd, right?)
So here I have a lot of problem, right now, I have the cluster.conf on
primary node (xentest.aic.fr) :
<?xml version="1.0"?>
<cluster name="XenCluster" config_version="4">
<cman two_node="1" expected_votes="1">
</cman>
<clusternodes>
<clusternode name="xentest.aic.fr" nodeid="1">
<fence>
<method name="human">
<device name="last_resort" ipaddr="10.0.22.203"/>
</method>
</fence>
</clusternode>
<clusternode name="xentest2.aic.fr" nodeid="2">
<fence>
<method name="human">
<device name="last_resort" ipaddr="10.0.22.176"/>
</method>
</fence>
</clusternode>
</clusternodes>
<fencedevice name="last_resort" agent="fence_manual"/>
</cluster>
then i do :
on primary node :
ccsd
service start cman
Starting cluster:
Loading modules... done
Mounting configfs... done
Starting ccsd... done
Starting cman... done
Starting daemons... done
Starting fencing...
yes, i've a problem with fencing devide, i dont understand well how it
work, even by reading :http://sources.redhat.com/cluster/doc/usage.txt
http://people.mandriva.com/~aginies/doc/procdure_lvmgnbd
http://www.centos.org/docs/4/html/rh-cs-en-4/s1-config-powercontroller.html
http://www.redhat.com/docs/manuals/enterprise/RHEL-5-manual/Cluster_Administration/s2-create-fence-devices-conga-CA.html
im still lost with fence devices.
Well, then i do cman_tool join -c XenCluster
with cman_tool nodes i see :
Node Sts Inc Joined Name
1 M 20 2007-04-17 17:07:49 xentest.aic.fr
2 X 0 xentest2.aic.fr
so, my second node, is not allready there, normal.
On 2nd node:
i launch ccsd,
if i try "cman_tool join -c XenCluster" -> cman_tool: ccsd is not running
or
service cman start
Starting cluster:
Loading modules... done
Mounting configfs... done
Starting ccsd... done
Starting cman... failed
/usr/sbin/cman_tool: ccsd is not running
so i'm sad, and i tried with a copy of the cluster.conf file on 2nd node,
i relaunch ccsd
then cman_tool join -c XenCluster
seems to work, bu actually, when i do "cman_tool nodes" i have :
Node Sts Inc Joined Name
1 X 0 xentest.aic.fr
2 M 36 2007-04-17 17:44:24 xentest2.aic.fr
As if there were 2 cluster named XenCluster, right?
So i'm really sad, an d i dont know what to do anymore, if someone
have just a hint to me, it would be really great.
btw : uname -r = 2.6.18-1.2798.fc6xen
have a nice evenning,
tx for reading me, i know, my explanation is long, and i'm sur it
don't worth it.
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