[Linux-cluster] Starting two-node cluster with only one node

Abed-nego G. Escobal, Jr. abednegoyulo at yahoo.com
Thu Jul 16 06:16:46 UTC 2009



Tried it and now the two node cluster is running with only one node. My problem right now is how to force the second node to join the first node's cluster. Right now it is creating its own cluster and trying to fence the first node. I tried cman_tool leave on the second node but I got 

cman_tool: Error leaving cluster: Device or resource busy

clvmd and gfs are not running on the second node. What is running on the second node is cman. When I did 

service cman start

It took 5 approximately 5 minutes before I got the [ok] meassage. Am I missing something here? Not doing right? Should be doing something?


--- On Thu, 7/16/09, Abed-nego G. Escobal, Jr. <abednegoyulo at yahoo.com> wrote:

> From: Abed-nego G. Escobal, Jr. <abednegoyulo at yahoo.com>
> Subject: [Linux-cluster] Starting two-node cluster with only one node
> To: "linux clustering" <linux-cluster at redhat.com>
> Date: Thursday, 16 July, 2009, 10:46 AM
> 
> Using the config file below
> 
> <?xml version="1.0"?>
> <cluster name="GFSCluster" config_version="5">
> <cman expected_votes="1" two_node="1"/>
>   <clusternodes><clusternode
> name="node01.company.com" votes="1"
> nodeid="1"><fence><method
> name="single"><device
> name="node01_ipmi"/></method></fence></clusternode><clusternode
> name="node02.company.com" votes="1"
> nodeid="2"><fence><method
> name="single"><device
> name="node02_ipmi"/></method></fence></clusternode></clusternodes>
>   <fencedevices><fencedevice
> name="node01_ipmi" agent="fence_ipmilan" ipaddr="10.1.0.5"
> login="root" passwd="********"/><fencedevice
> name="node02_ipmi" agent="fence_ipmilan" ipaddr="10.1.0.7"
> login="root" passwd="********"/></fencedevices>
>   <rm>
>     <failoverdomains/>
>     <resources/>
>   </rm>
> </cluster>
> 
> Is it possible to start the cluster by only bringing up one
> node? The reason why I asked is because currently bringing
> them up together produces a split brain, each of them member
> of the cluster GFSCluster of their own fencing each other.
> My plan is to bring up only one node to create a quorum then
> bring the other one up and manually join it to the existing
> cluster.
> 
> I have already don the start_clean approach but it seems it
> does not work.
> 
> 
>       
> 
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