[chef] temporarily disable one cookbook on one node.

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Hi, 

I am a newbie for chef. Is there any way to disable one cookbook or role on 
one
node?

For example:
DBA want to disable role -- mysql on one node to do maintenance, but other
cookbooks or roles are still functional through chef-client.

using provider, I can check local file content before do any actions, but 
don't
know how to disable a role or cookbook on chef-client side.

Appreciate for any helps.

Bill