Change your topology script?

One thing about rack awareness. You never want to have an unbalanced 
configuration. The caveat is if your uplinks between the ToR Switch  are 'fat' 
enough. (4 10GBe should do it.)

If you watched your system with the one machine on a separate rack (assuming it 
was also on a separate switch) you'd see a major network bottle neck. (We use 
Ganglia)

If you're seeing the rack count wrong, you could just bounce the cloud and it 
should show only two.

Note: Deprecating a machine can take a long time. You may want to consider just 
killing the node, waiting till the cluster recognizes that its down and I 
believe just kicking off an FSCK or maybe running the balancer program will 
clean that up faster than deprecating. (YMMV)

HTH

-Mike


-----Original Message-----
From: Mag Gam [mailto:[email protected]] 
Sent: Wednesday, January 05, 2011 5:56 AM
To: [email protected]
Subject: decommission a rack

Using 0.21

I have a server which was in rack3. It was the only server in this
rack so I decommissioned the server. fsck shows only 2 racks however
topology shows 3 racks. How can I fix this?


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