[LIBCLOUD-117] OpenNebula Compute Network Description

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.5.2, 0.6.1
• Fix Version/s: 0.6.1
• Component/s: Compute
• Labels: patch

Environment

Debian Squeeze using 0.5.2 libcloud extracted archive file.

• Assignee: Unassigned
• Reporter: Hutson Betts
• Created: 11/Oct/11 18:08
• Updated: 12/Oct/11 10:26
• Resolved: 12/Oct/11 10:23

Description

An issue exists in the way the OpenNebula driver pulls the network IP address for a compute node. It causes the driver to fail every time.

Function Call:
cloudProvider.connection.list_nodes()

Exception Output:
Traceback (most recent call last):
File "test.py", line 65, in <module>
nodes[cloudProvider.host] = cloudProvider.connection.list_nodes()
File "/var/lib/service-manager/service-management-system/lib/apache-libcloud-0.5.2/libcloud/compute/drivers/opennebula.py", line 113, in list_nodes
return self._to_nodes(self.connection.request('/compute').object)
File "/var/lib/service-manager/service-management-system/lib/apache-libcloud-0.5.2/libcloud/compute/drivers/opennebula.py", line 188, in _to_nodes
computes.append(self._to_node(compute))
File "/var/lib/service-manager/service-management-system/lib/apache-libcloud-0.5.2/libcloud/compute/drivers/opennebula.py", line 200, in _to_node
networks.append(element.attrib["ip"])
KeyError: 'ip'

Cause:
for element in compute.findall("NIC"):
networks.append(element.attrib["ip"])

OpenNebula/OCCI Compute Definition
<COMPUTE href="http://www.opennebula.org/compute/32">
<ID>32</ID>
...
<NIC>
<NETWORK href="http://www.opennebula.org/network/12"/>
<MAC>00:ff:72:31:23:17</MAC>
<IP>192.168.0.12</IP>
...
</NIC>
...
</COMPUTE>

Conclusion:
IP address information is not an attribute. Rather it's a child element of the NIC.

Patch:
With patch, the NIC information is returned correctly:
<Node: uuid=894yf9823fh9, name=one-34, state=4, public_ip=['10.2.0.5', '10.2.2.3'], provider=OpenNebula ...>