Re: [Linux-cluster] having problems trying to setup a two node cluster

Jonathan E Brassow <jbrassow@xxxxxxxxxx> · Wed, 1 Dec 2004 13:15:14 -0600

try to do a 'ccs_test connect' after doing the cman_tool join, and see 
what happens

ccs_test will not allow you to connect to an inquorate cluster, unless 
you use the force option.  Since your nodes become quorate after 
cman_tool join, you should be able to connect...  If you can not, it 
suggests that the magma-plugins are not installed/correct.

 brassow

On Dec 1, 2004, at 11:29 AM, vahram wrote:

Hi all,

I'm trying to set up a little two node demo cluster, but I'm having 
some weird issues.

Here's my cluster.conf:

<?xml version="1.0"?>
<cluster name="demo" config_version="1">

  <cman two_node="1" expected_votes="1">
  </cman>

  <nodes>
    <node name="nodeA" votes="1">
      <fence>
        <method name="single">
          <device name="human" ipaddr="192.168.2.203"/>
        </method>
      </fence>
    </node>
    <node name="nodeB" votes="1">
      <fence>
        <method name="single">
          <device name="human" ipaddr="192.168.2.204"/>
        </method>
      </fence>
    </node>
  </nodes>

  <fence_devices>
    <device name="human" agent="fence_manual"/>
  </fence_devices>

</cluster>

I have both nodeA and nodeB defined in /etc/hosts on both boxes, and I 
launched ccsd on both machines.  All the necessary modules are also 
loaded.

When I run ccs_test connect, I get a connection refused message.  I 
then tried to run cman_tool join on both boxes.  nodeB successfully 
receives a copy of cluster.conf, but it then tries to form it's own 
cluster.  In other words...nodeA sees this:

[root@nodeA ~]# cat /proc/cluster/status
Version: 3.0.1
Config version: 1
Cluster name: demo
Cluster ID: 40925
Membership state: Cluster-Member
Nodes: 1
Expected_votes: 1
Total_votes: 1
Quorum: 1
Active subsystems: 0
Node addresses: 192.168.2.203
[root@nodeA ~]# cat /proc/cluster/nodes
Node  Votes Exp Sts  Name
   1    1    1   M   nodeA

and nodeB sees this:

[root@nodeB ~]# cat /proc/cluster/status
Version: 3.0.1
Config version: 1
Cluster name: demo
Cluster ID: 40925
Membership state: Cluster-Member
Nodes: 1
Expected_votes: 1
Total_votes: 1
Quorum: 1
Active subsystems: 0
Node addresses: 192.168.2.204
[root@nodeB ~]# cat /proc/cluster/nodes
Node  Votes Exp Sts  Name
   1    1    1   M   nodeB

Both boxes are running FC3, and I used the SRPM's from 
http://people.redhat.com/cfeist/cluster/SRPMS/

Please let me know what I'm doing wrong here...thanks!

-vahram

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