Turning on HyperV support disables tunneling for entire environments

[JPBD]

When enabling HyperV support, tunneling is disabled for every environment which is unwanted. In an hybrid KVM/HyperV environment, Tunneling is required for the KVM part.

We do not know if it has to be explicitly disabled for HyperV. If it is the case, then tunneling should only be disabled for the HyperV part.

{% if neutron_plugin_agent == "openvswitch" or neutron_plugin_agent == "opendaylight" %}
{% if not enable_hyperv | bool %}
[agent]
tunnel_types = vxlan
l2_population = true
arp_responder = true
{% endif %}

[Dan Ardelean (danardelean)]

Hi,

The nova on HyperV supports two scenarios for networking/neutron:
1. neutron-hyperv-agent which can NOT use tunneling (flat/vlan only)
2. neutron-ovs-agent which CAN use tunneling

If you do a "Get-Service neutron*" in powershell you should see service.

In the current implementation, kolla nova-hyperv is only deploying neutron-hyperv-agent. However, vxlan can still be used for mix envs on KVM. So you are right, HyperV should not explicitly disable the vxlan bits. The ONLY limitation is that HyperV VMs can only use flat/vlan network types. So if you want your HyperV VMs to communicate with the KVM VMs, you'll need some routing, neutron-l3-agent for example, or floating IPs.

I will send a patch that removes the "if not enable_hyperv" restrictions.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/515660

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/515660
Committed: https://git.openstack.org/cgit/openstack/kolla-ansible/commit/?id=bac90b87bdef2e2599d57573293ee167fa046201
Submitter: Zuul
Branch: master

commit bac90b87bdef2e2599d57573293ee167fa046201
Author: Dan Ardelean <email address hidden>
Date: Fri Oct 27 12:29:55 2017 +0300

    HyperV should not disable tunneling

    HyperV support disables tunneling for entire environment. This
    should not be the case since tunneling can be used for KVM in mix
    env. In this case, HyperV VMs can only use flat/vlan networks.

    Change-Id: I6237c42918442625acd946b7455d236612ba19cc
    Closes-Bug: #1725417

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/kolla-ansible 6.0.0.0b2 development milestone.