Re: [ovirt-users] Documentation of cloud-init

25 Jul 2014


      On 07/25/2014 12:59 PM, Amedeo Salvati wrote:
...
Hy guys,
after some headache I was able to use cloud-init via python-sdk (thanks
to Juan), and I hope no one will fight anymore with them :D, so if you
want I think it's better to document with a simple example it's use on
web page available at:
http://www.ovirt.org/Features/Cloud-Init_Integration
below simple change that you can integrate on web page:
- fix api design example of usage for files xml, on the web page you can
find:
...
       <files>
         <file>
           <name>/tmp/testFile1.txt</name>
           <content>temp content</content>
           <type>PLAINTEXT</type>
         </file>
       </files>
...
but on params.File there aren't any "type" parameter only "type_" so you
can change xml with:
...
       <files>
         <file>
           <name>/tmp/testFile1.txt</name>
           <content>temp content</content>
           <type_>PLAINTEXT</type_>
         </file>
       </files>
...
This won't be correct, the correct XML tag name is "type", as in the
example in the web page. It is not good idea to use this as a parmeter
in python because it hides the "type" builtin function. That is why we
renamed it to "type_".
...
- insert an example of using cloud-init via python-sdk (I hope java-sdk
haven't big differences).
for this you can insert on web page an example of setting via
cloud-init: hostname, reset root password and write a simple text file,
and finally simple python code is:
...
scontent = "write_files:\n-   content: |\n        #simple file\n       
PIPPO=\"ciao\"\n    path: /etc/pippo.txt"
action = params.Action(
  vm=params.VM(
    initialization=params.Initialization(
      cloud_init=params.CloudInit(
    host=params.Host(address="rheltest029"),
    users=params.Users(
      user=[params.User(user_name="root", password="pippolo")]
      ),
    files=params.Files(
      file=[params.File(name="/etc/pippo.txt", content=scontent,
type_="PLAINTEXT")]
      )
    )
      )
  )
)
vm.start( action )
...
I think that you can edit that page and add this Python snippet. If you
don't have an account for the wiki you can request one here:

  http://www.ovirt.org/Special:RequestAccount

And if you want you can also submit a patch for the ovirt-engine-sdk
project, adding your script in the (not yet existing) examples directory.
...
HTH
Amedeo Salvati
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Re: [ovirt-users] Documentation of cloud-init

Juan Hernandez