==== Port Allocation ====
At the ''meta'' user level, on the metaarray, users are allowed to run simple servers on an allocated port.

=== The Word from Membership ===
The elusive topic of users being able to allocate ports has come up several times on bboard and has yet to be documented. Here's official word from smj:

          TACKER:  smj (Stephen M. Jones)
          SUBJECT: .. SDF user port allocation
          DATE:    20-Apr-13 22:35:45
          HOST:    ol
          Its quite simple and should be add to the tutorials.  The port number is
          based on your numeric id.  You may run a simple server process on
          meta.sdf.org as long as it does not circumvent a membership (for instance,
          running your own webserver to host your own domain name bypassing the VHOST
          membership).  IRC bots are fine and servers of reasonable or less foot
          print.  For instance if you ran a nickserver or bot you'll likely be fine.
          If you run a minecraft server you'll probably get emails from other users
          asking you to stop hogging CPU and Memory.

=== What Port Can I Use? ===
Now that you know the policy, you might ask yourself, how do I get my numeric id? Which system provides the correct numeric id? Answer is simple, you run the`id` command from any cluster server, and note your **uid**, this is your **assigned port number**.

**Example:** 
<code>       
  $ id
  uid=56395(user) gid=500(arpa) groups=500(arpa),600(MetaARPA),900(motd)
  $ id -u
  56395
  $
</code>      
In the above example, note that the output of ''id'' shows that your user account is in the "MetaARPA" group, and lists the uid number. Running ''id -u'' just shows the //uid//, which is the port number you would use, in this case *56395*. You are now ready to setup your server software.


 Here are some servers you can run on your own port:

  * [[building_a_basic_ruby_on_rails_application|Building a Basic Ruby on Rails Application]]
  * [[NodeJs on MetaArray]]
  * [[Java Jetty Server on MetaArray]]
----
    
Legacy link [[http://sdf.org?tutorials/port_allocation]]