NX Server for remote desktop access to Fedora 8

I’ve been writing code in the wonderful Aptana Studio, including projects in Ruby on Rails. Because of the way Aptana is able to generate code on the fly during development, it’s a lot easier to develop on the target server than it is to develop on my Windows Vista laptop and transfer (or sync) the pages repeatedly. So, I thought I’d see if there was an easy way to remotely access the desktop of my Fedora box.

VNC has been around a long time, and I’ve used it for years in the Windows world, but it’s performance is not so great, and setting it up to run over ssh is not so fun.

Searching around a bit, I found freenx, a GPL implementation of NX by NoMachine. Assuming you already have sshd running on the server, then a great set of installation instructions is here. Basically, you use yum to install 2 packages on the server, install a client program on the clients, sync the ssh keys, and you’re done. It works great!

One minor problem is that there is an updated version of the NX Server available (as of this writing, version 3.1.0-2). According to the changelogs, there are a number of fixes over the version 2.1.0 installed by yum. So, I decided to see how difficult it would be to install the free version of nxserver 3.1.0 on my Fedora server. Details are below. In summary: installation was trivial, and performance is remarkably better with far fewer quirks seen in the previous version. Here’s what I did.

  1. Uninstall nx and freenx previously installed through yum.
    > yum remove nx freenx
  2. The previous install of nx/freenx created a user ‘nx’, and the ‘yum remove’ command above failed to delete that user, so I manually removed user ‘nx’.
  3. Installation of NoMachine’s NX server involves installing 3 packages that depend on each other to function. From this page, I chose the rpm packages.
  4. Once downloaded, install as usual per rpm:
    > rpm -iv nxclient-3.1.0-2.i386.rpm
    > rpm -iv nxnode-3.1.0-3.i386.rpm
    > rpm -iv nxserver-3.1.0-2.i386.rpm
  5. Now run the nxserver install script.
    > /usr/NX/scripts/setup/nxserver --install
  6. On your client machine, you should download the nx client from this page appropriate for your platform. Once installed, start the client and configure your connection (ip address, username, etc). More details about the setup, as well as troubleshooting tips, are available on the page I referenced above (here).
  7. In order to connect from the client machine, the ssh keys must match between client and server. The easiest approach is to generate the key on the server. On the server, issue this command:
    > /usr/NX/bin/nxserver --keygen
    The resulting ssh key is stored in /usr/NX/share/keys/default.id_dsa.key. Using your favorite tool, copy the contents of this file to your clipboard. Back on your client machine,  within the configuration window, click “Key” on the first tab. Paste the key from your clipboard here.
  8. Done!! You should be able to start a new session and you’re rolling!

Read more at drhymel.com

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