[Help] Need To Make Server OP Only

Hello Bukkit community, I just wanted to know if there is a preference or a plugin that I can use to make my server OP only. Our map file was recently corrupted and I need some time with my OP's to fix it and make it ready to handle our regular members.

Basically if I can get something that doesn't let them come online unless they have OP status and perhaps even give a message such as "Sorry, The Map file was corrupted, we are working to fix this as soon as possible, follow the blog for more info."

Basically thanks to whoever can give some input to this problem and I appreciate speedy replies. Thanks in advance

 

You could just make a whitelist that you'd copy in place via ssh for those special times.

 

Thanks.