Could really use some help with simple, 2-node cluster install

[ineloquucius]

I've tried many, many different ways of setting up the cluster.conf file, but every time I start the cman service I get a message telling me "corosync died: could not read cluster configuration".

This means nothing to me, nor can I find logs, or anything on the net about this message. I'm ultimately just trying to run a simple GFS2 config on 2 Ubuntu 9.10 desktop nodes, but I can't even get a basic cluster config going.

What am I missing? I've been at this for days.

  <cluster name="example" config_version="1">
         <clusternodes>
           <clusternode name="nd01">
             <fence>
               <method name="human">
                 <device name="manual" ipaddr="nd01"/>
               </method>
             </fence>
           </clusternode>

         <--also tried with a second instance like above: nd02... -->

         </clusternodes>

         <fencedevices>
           <fencedevice name="manual" agent="fence_manual"/>
         </fencedevices>

  </cluster>

[oJP]

Hello. Can you put the full output for /etc/init.d/cman script? and the file /var/log/messages.

I think are missing tags like this:

<failoverdomains>
                        <failoverdomain name="mydomain" ordered="0" restricted="0">
                                <failoverdomainnode name="nd01" priority="1"/>
                                <failoverdomainnode name="nd02" priority="1"/>
                        </failoverdomain>
</failoverdomains>

Bye.

[elvis_presley]

Try this guide: w w w.linuxjournal.com/article/9759

I set up a production cluster using it ...

[ecartman]

You need to declare all nodes, eg:

        <clusternodes>
                <clusternode name="fred" nodeid="1" votes="1">
                        <fence/>
                </clusternode>
                <clusternode name="ethyl" nodeid="2" votes="1">
                        <fence/>
                </clusternode>
        </clusternodes>

since you are running a two-node cluster, you need to declare that as well:

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

Two node clusters are not useful for high availability. You really need a third. You can
use virtual machines. In order to remain quarate, you need 50% + 1 of the servers
voting. Your third member does not have to mount the resource, it's just there
for the quorum.