[Ocfs2-users] re: question on adding a node to RAC cluster and o2cb

[Sunil Mushran]

The real error was the one you got when you were not able
to add the new node in node1. It is an ocfs2console problem.
That it did not work when you added the node in node2 and
propagated, is explainable.

When you get the third node, do the following:

1. On the existing two nodes, add the new node by hand by
executing this (on both).
# o2cb_ctl -C -i -n NODENAME -t node -a number=NODENUM -a ip_address=IPADDR
          -a ip_port=7777 -a cluster=CLUSTERNAME

2. By doing so, you are not only adding the node in /etc/ocfs2/cluster.conf
but also activating it (/config/cluster/CLUSTERNAME/node).

3. Either "Propagate" or hand copy the cluster.conf to the new node.

4. Start the cluster on the new node and then mount.

Peter Santos wrote:
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> I don't know what the entries looked  like in /config/cluster/<clustername>/node/
> when we tried this.
>
>
> Now it does show both nodes... but we have since restarted the entire cluster in order to get this to work.
> We are waiting to get another new machine to try it again.
>
> What I do remember is that initially we started up the ocfs2console from node1 and
> clicked "add" to add a 2nd node and the tool complained ( I can't remember the exact error message now).
>
> Then we tried to run ocfs2console from the new/2nd node and added both node1 and node2 to the configuration
> Then we clicked propagate .. this worked without any error messages, but we were not able to mount the ocfs2
> filesystem on node2 until we restarted the cluster on node1. (transport endpoint errors..)
>
> We will definitely try again on a 3rd node, I'm just not clear on what the sequence of events
> should be.
>
> thanks
> peter
>
>
>
> Sunil Mushran wrote:
>   
>> When you added the new node using ocfs2console, did it show up in:
>> # ls /config/cluster/<clustername>/node/
>>
>> I am assuming that it was added in /etc/ocfs2/cluster.conf.
>>
>> Yes, the docs does not cover this as of now. I will update the
>> FAQ/user's guide
>> with the info.
>>
>> Peter Santos wrote:
>>
>> Folks,
>>     I'm trying to find information about how to dynamically add
>>     a 2nd node to a 1 node RAC cluster.  I'm posting this only after
>> not getting the
>>     details from my oracle tar via metalink.
>>
>>     My installation is Suse Enterprise 9 x86_64 (kernel 267).
>>
>>     Installing the single node was not a problem, what is not clear is
>> how to prepare
>>     the cluster.conf file and the ocr stuff to add a 2nd or additional
>> node. Obviously the
>>     2nd node has to have all the ip configurations in place and ssh
>> has to be working, but
>>     at some point, the /etc/ocfs2/cluster.conf file has to be modified
>> and propagated and the
>>     ocfs2 mount point has to be mounted on the additional nodes ..this
>> is where we had problems.
>>
>>     Here is what we did.
>>         1. setup the 2nd node with all the proper network
>> configuration, and ssh equivalence.
>>         2. we "added" a 2nd node to cluster.conf via ocfs2console and
>> propagated that to the new node.
>>         3. We tried to mount the ocfs2 mount point, but could not ..
>> it said something like
>>         "transpoint end point not found ...".
>>
>>         4. We then restarted the cluster on node1 and were able to
>> mount the ocfs2 mount point and go
>>            on to add the 2nd node.
>>
>>     We are trying to identify the sequence of actions/procedures to
>> add a 2nd node at the o2cb/ocfs2 level.
>>
>>     Oracle support didn't have this level of detail, so I'm hoping
>> someone knows how to do this without
>>     shutting down the cluster on node1
>>
>>     thanks
>>
>> -peter
>>
>>     
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