[xen-tools-discuss] IP auto-increment

[Steve Kemp]

On Mon Sep 21, 2009 at 19:47:35 +0200, .:: Alfred Sawaya ::. wrote:

> I'm new to the xen-tools communitie, I just wonder where I could find an
> exhaustive documentation about xen-tools.conf. I would like to
> auto-increment ips when creating xen guests. I've tried the method as
> describe here :
> http://www.debian-administration.org/article/A_brief_introduction_to_xen-tools
>
> But it doesn't work.

  "It doesn't work" isn't a helpful description of your problem.

  Can you tell us:

   * What did you try?
   * How did it fail?
   * Did you receive any errors?

  Take a look at the output of "xen-create-image --manual" and you'll
 see this:

 --

  One other useful shortcut is the use of an automatic IP address.
 You can specify '--ip=auto' and the system will choose and use
 an IP address from those listed in /etc/xen-tools/ips.txt.

  For example if you wished to have Xen guests automatically
 take an address from the range 192.168.1.100-192.168.1.200 you
 would first prepare the system by running this:

  rm /etc/xen-tools/ips.txt
  for i in $(seq 100 200) ; do echo 192.168.1.$i >> /etc/xen-tools/ips.txt ; done

  Now you can create a guest with the command:

  xen-create-image --ip=auto --hostname=blah [--dist=...]

  The first time this ran the machine would receive an IP address
 from the pool which we've created.  This IP would be marked as used,
 and would no longer be available.  If all the IP addresses are taken
 then the system will fail.
--

  Does that help?

Steve
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