I have installed a masternode on Ubuntu Linux, and it is working great!
Do you know how to withdraw the earnings from the masternode without removing the collateral of 25,000 Neutron?
Is there a "special" way to do this?
First you need to enable coin control. It is hidden in the settings of your wallet. click on Settings->Options->Display and then tick the box next to "Display Coin Control Features".
With coin control enabled, you will find a new button called "Inputs" in the send screen. Click on it and you are presented with all addresses that hold coins.
To withdraw your dividends only, ensure to only tick the checkboxes that correspond to dividends. Do not tick your collateral amount (the amount you used to create your Masternode). That way you ensure that your masternode stays up after the withdrawal.
When you are finished ticking checkboxes, go back to your "send" screen. You will find that the Amount you can withdraw has been filled according to the amount of boxes you ticked.
As you know each transaction requires a fee to be paid. In order to withdraw the right amount, right click on the amount in "After Fee". A menu pops up to "copy after fee" which is what you want to do.
As a last step, paste the amount into the amount field. It will populate with the correct amount. Enter the address you want to withdraw to and click send.
If you need more detailed instructions check out
http://nodeshare.in/coins/coincontrol