[Ocfs2-users] Add a new node to ocfs cluster

[Sunil Mushran]

o2cb_ctl -C -n <hostname> -t node -a cluster=<clustername> -a 
ip_address=<ip> -a ip_port=<port> -a number=<nodenum> -i

For e.g.
# o2cb_ctl -C -n node99 -t node -a cluster=clus5 -a 
ip_address=192.168.0.99 -a ip_port=7777 -a number=99 -i

Refer "man o2cb_ctl" for more details.

Vanaclocha Llorens, Jose Lorenzo wrote:
> Many thanks for your help Sunil. One more question my final intention is to do it in a silent mode. Can the ocfs2console step be replaced with a sequence of commands?
>
> I mean, my final goal is add a node to an existing Oracle RAC automatically. Do you think that it is possible from the ocfs perspective?
>
> Best regards,
>
>
> Llorenç Vanaclocha 
>
>
> -----Mensaje original-----
> De: Sunil Mushran [mailto:Sunil.Mushran at oracle.com] 
> Enviado el: sábado, 11 de marzo de 2006 0:29
> Para: Vanaclocha Llorens, Jose Lorenzo
> CC: ocfs2-users at oss.oracle.com
> Asunto: Re: [Ocfs2-users] Add a new node to ocfs cluster
>
> One can add nodes dynamically. Run ocfs2console on
> all existing nodes to add the new node. Note adding on
> one and propagating to others will not work. One needs
> to add on each active node via ocfs2console.
>
> Once added, the new node should show up in
> /config/cluster/<clustername>/nodes. Ensure you see the
> new node on all active nodes.
>
> Then copy the updated cluster.conf to the new node and
> start the cluster and mount.
>
> Vanaclocha Llorens, Jose Lorenzo wrote:
>   
>> Hi everybody,
>>
>> My problem is that I want to add a new node to an existing RAC with 
>> ocfs2, without stop the database.
>>
>> If I add a new node to an existing ocfs cluster, do I need to stop the 
>> ocfs in the others nodes of the cluster?
>>
>> I've tried to do it without stop the ocfs in the others nodes but I 
>> get the following error:
>>
>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>
>> [root at raclab3 ~]# mount.ocfs2 /dev/mapper/eva_d1 /u01/app/oracle
>>
>> mount.ocfs2: Transport endpoint is not connected while mounting 
>> /dev/mapper/eva_d1 on /u01/app/oracle
>>
>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>
>> I've three nodes: raclab3, raclab4 and raclab5. I'm trying to add 
>> raclab3 to the existing cluster formed by raclab4 and raclab5.
>>
>> In the raclab3 I have the following folder:
>>
>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>
>> [root at raclab3 ~]# ls -l /config/cluster/ocfs2/node/
>>
>> total 0
>>
>> drwxr-xr-x 2 root root 0 Mar 10 11:53 raclab3
>>
>> drwxr-xr-x 2 root root 0 Mar 10 11:47 raclab4
>>
>> drwxr-xr-x 2 root root 0 Mar 10 11:47 raclab5
>>
>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>
>> But in the raclab4 and raclab5 I have:
>>
>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>
>> [root at raclab5 ~]# ls -l /config/cluster/ocfs2/node/
>>
>> total 0
>>
>> drwxr-xr-x 2 root root 0 Mar 10 12:47 raclab4
>>
>> drwxr-xr-x 2 root root 0 Mar 10 12:47 raclab5
>>
>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>
>> If I execute in both nodes:
>>
>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>
>> [root at raclab5 ~]# /etc/init.d/o2cb disable
>>
>> Writing O2CB configuration: OK
>>
>> [root at raclab5 ~]# /etc/init.d/o2cb enable
>>
>> Writing O2CB configuration: OK
>>
>> Loading module "configfs": OK
>>
>> Mounting configfs filesystem at /config: OK
>>
>> Loading module "ocfs2_nodemanager": OK
>>
>> Loading module "ocfs2_dlm": OK
>>
>> Loading module "ocfs2_dlmfs": OK
>>
>> Mounting ocfs2_dlmfs filesystem at /dlm: OK
>>
>> Starting cluster ocfs2: OK
>>
>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>
>> I get information of raclab3:
>>
>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>
>> [root at raclab5 ~]# ls -l /config/cluster/ocfs2/node/
>>
>> total 0
>>
>> drwxr-xr-x 2 root root 0 Mar 10 12:51 raclab3
>>
>> drwxr-xr-x 2 root root 0 Mar 10 12:51 raclab4
>>
>> drwxr-xr-x 2 root root 0 Mar 10 12:51 raclab5
>>
>> ------------------------------------------------------------------------------------------------------------------------------------------------------------------
>>
>> And finally I can mount my file system in the raclab3 node.
>>
>> Summarizing, is it possible to add a new node without stop the ocfs in 
>> all the cluster nodes?
>>
>> Any help or comment will be welcome.
>>
>> Best regards,
>>
>> Llorenç
>>
>> ------------------------------------------------------------------------
>>
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>>