Check the contents of /etc/ocfs2/cluster.conf. Are you sure there is no
node number 2 in it.
Else email me a copy of the config file to see if I can duplicate it in
house.
BTW, the directions for adding nodes (online & offline) have been added
to the FAQ.
http://oss.oracle.com/projects/ocfs2/dist/documentation/ocfs2_faq.html#CONFIGURE
Peter Santos wrote:
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Sunil,
per your instructions I added our 3rd node to the cluster via o2cb_ctl.
The first time it didn't work because it said the number already existed.
dbo1:~ # o2cb_ctl -C -i -n dbo3 -t node -a number=2 -a ip_address=192.168.6.9
-a ip_port=7777 -a cluster=ocfs2
o2cb_ctl: Node number "2" already exists
Not really sure why it said node number 2 existed. I checked here.
dbo1:~ # cat /config/cluster/ocfs2/node/dbo1/num
0
dbo1:~ # cat /config/cluster/ocfs2/node/dbo2/num
1
I even checked with "o2cb_ctl -I -type node...
Then I re-ran my o2cb_ctl command with "-a number=3" and it worked. Now I
have node 0,1, and 3. I don't suspect
this is a big deal, but I'm not sure why it didn't like node number 2 .. Any
ideas ?
BTW, this time I was able to mount the ocfs2 filesystem without a problem...
this was the whole reason for this
thread.. previously I had tried to add a node with ocfs2console and
propagation .. but it didn't work until I shutdown
o2cb.
- -peter
Sunil Mushran wrote:
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:
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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