Sure would be nice if they would produce an API guide that had some examples. I found the same problem and ended up having to go through the OVSAgentServer.py and OVSServerProxy.py code...

You can use the ServerProxy method of xmlrpclib, passing the username/password, using basic authentication. However, I noticed that what I *thought* was the password I was using for "admin", was not the same as what was being used by the ovs-agent process.

When you run /etc/init.d/ovs-agent configure, and it prompts you for a password, it looks like it updates /etc/ovs-agent/passwdfile as well as /etc/ovs-agent/agent.ini. However, to execute XML-RPC remote methods, authentication to the OVS agent is done using the username of "admin" and password stored in /etc/ovs-agent/agent.ini:

;admin.password --
;admin is the default privileged user with full control of ovs-agent,
;agtctl used this passwd to shutdown ovs-agent gracefully
;this passwd will be generated randomly when /etc/init.d/ovs-agent configure
;is called.
;(HIDDEN)
admin.password=<passwd>


Example:

#!/bin/env python
from xmlrpclib import ServerProxy
server = ServerProxy("https://admin:<passwd>@<hostname>:8899")

print server.echo( "Hello World!" )
#########################################

Hope this helps.

-Todd

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