is it possible to point multiple miners to a single wallet?
And if so has anyone done it with ubuntu on azure?
Yes you can. You set your rpcuser, rpcpassword, rpcallowip, server=1, rpcport (if you want) in your riecoin.conf and then point your miners to the ip address of your wallet.
I tried that but it can't connect, I'm thinking the rpc port isn't open externally as I can ssh from the box but not connect with the miner