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Retrieving a List of Virtuozzo Containers

To retrieve a list of Virtuozzo Containers from the Hardware Node, we will use the get_list call from the vzaenvm interface (Virtuozzo Container management).

#XML message. Getting a list of Virtuozzo Containers.

$request=qq~

<packet version="4.0.0" id="4">

  <target>vzaenvm</target>

  <data>

    <vzaenvm>

      <get_list/>

    </vzaenvm>

  </data>

</packet>

~;

#Write the XML message to the socket.

$socket->printflush($request.&MSG_TERMINATOR);

#Read the response and display it on the screen.

$response = $socket->getline;

chomp($response);

print $response;

The response will contain the list of Server IDs. The following is an example of the response message:

<packet id="4" time="2007-08-29T22:51:52+0000" priority="0" version="4.0.0">

  <origin>vzaenvm</origin>

  <target>vzclient24-4fce28dd-0cd3-1345-bb94-3192b940fb90</target>

  <dst>

    <director>gend</director>

  </dst>

  <data>

    <vzaenvm>

      <eid>ba92bfb3-d97b-014f-a754-5b30528477c3</eid>

      <eid>e9ab2834-ed97-1f4b-bd41-81c27facfc30</eid>

      <eid>72145bf0-7562-43d4-b707-cc33d37e3f10</eid>

      <eid>6dbd99dc-f212-45de-a5f4-ddb78a2b5280</eid>

    </vzaenvm>

  </data>

  <src>

    <director>gend</director>

  </src>

</packet>

To complete this demonstration, we'll add a code to our program that will restart one of the Virtuozzo Containers from the list above.

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