Howto remove & (re)install Clusternode OES2 SP3

We have a 2 node sles10.3+oes2sp3 cluster.
We have some problems with the second node. To make a long story short, we have 2 options now:
1. reinstall the second node or
2. add a third node and remove the second one afterwards.
We have a shared storage via iSCSI - both nodes are iscsi initiators. We have 1 NSS Volume which is cluster enabled.
Our Questions:
1. Is there anything with regard to the sdb partition we have to take care about or can I just follow the steps in the ncs docu.
2. What happens to all the objects in eDir (oes objects, node2 object, ncp object etc.)? How can we remove the ALL objects related to the second node?
3. Which option would you recommend and how would u do it? Anything dangerous we have to take care about?
thx,
hugo

Well, having done this before myself (I messed up the 7th server installation because I wasn't paying attention).
So here's what I did:
1) I ran the ndsconfig -rm to remove the "messed up" cluster server from the tree.
2) cleaned up the eDir objects for THAT SERVER (meaning the PHYSICAL node objects--NOT any of the cluster stuff). So I basically searched (via consoleone) for: *servername* and deleted those objects.
3) I then reinstalled SLES 10/OES2 (without the NCS pattern), and gave it the same name/IP and put it into the proper eDir container this time.
4) Then I installed the NCS pattern (see my guides for how i did my install).
For the SDB partition, really the only thing you need to worry about is that (prior to installing NCS pattern):
a) Does the server "see" the SBD partition. In my case I use MPIO, so I made sure that a:
multipath -ll
command showed the SBD partition
I think there's the sbdutil -f or something command that you can run
2) For your "cleanup" I just used consoleone, "find" (make sure to start at the O=whatever in your tree and check the box for "search subcontainers) and then searched for *servername*. You do NOT want to delete any of the cluster objects (although I think they would have different names anyway). If my memory is correct.
I would not bother with option #2 (adding a third node and then deleting the 2nd one).
I hope this helps.
--Kevin

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