Open Stack

Hello,

We don't ship with an opendaylight group by default in the integrated repo.
Two choices:
- You deploy opendaylight on the side, and you point to it by having a user variable odl_ip for example.
- You add an extra group (where you want to have it!) using openstack-ansible inventory system.

For this you can either follow the documentation for manipulating the dynamic inventory, or you can ship your own static inventory to complement the dynamic inventory.
For the former, you should read this [1].
For the latter, you can simply create an /etc/openstack_deploy/inventory.ini file, like a regular ansible ini inventory.

Hope it helps.

Jean-Philippe Evrard (evrardjp)

[1]: https://docs.openstack.org/openstack-ansible/latest/reference/inventory/inventory.html
 
On Thursday, August 02, 2018 11:23 CEST, nicolas at lrasc.fr wrote: 
 
> Hi Openstack community !
> 
> I have a question regarding Openstack Ansible (OSA) and one deployement 
> scenario "Scenario - OpenDaylight and Open vSwitch" (link below).
> https://docs.openstack.org/openstack-ansible-os_neutron/latest/app-opendaylight.html
> 
> 
> 
> This is a lab test and I take inspiration from "Test environment" 
> example :
> https://docs.openstack.org/openstack-ansible/queens/user/test/example.html
> 
> 
> 
> First, I have already tried and achieve to use the "OSA Scenario - Using 
> Open vSwitch" (link below), which was necessary to understand before 
> trying the ODL + OvS scenario.
> https://docs.openstack.org/openstack-ansible-os_neutron/latest/app-openvswitch.html
> 
> This means I was able to deploy Openstack with OvS as network driver and 
> I was able to instatiates VMs on tenant VxLAN network, test networks 
> between VMs, use floating IPs, etc..
> 
> 
> 
> Now I want to try the "Scenario - OpenDaylight and Open vSwitch" 
> scenario because I want to deploy my Openstack environnement with the 
> "networking-sfc" driver activated.
> 
> I understand that I must modify the config file 
> "/etc/openstack_deploy/user_variables.yml" like this :
> 
> ```
>     # /etc/openstack_deploy/user_variables.yml
> 
>     ### Ensure the openvswitch kernel module is loaded
>     openstack_host_specific_kernel_modules:
>       - name: "openvswitch"
>         pattern: "CONFIG_OPENVSWITCH"
>         group: "network_hosts"
> 
>     ### Use OpenDaylight SDN Controller
>     neutron_plugin_type: "ml2.opendaylight"
> 
>     odl_ip: "{{ 
> hostvars[groups['opendaylight'][0]]['ansible_default_ipv4']['address'] 
> }}"
>     neutron_opendaylight_conf_ini_overrides:
>       ml2_odl:
>         url: "http://{{ odl_ip }}:8180/controller/nb/v2/neutron"
>         username: <username>
>         password: <password>
> 
>     neutron_plugin_base:
>      - router
>      - metering
>      - networking_sfc.services.flowclassifier.plugin.FlowClassifierPlugin
>      - networking_sfc.services.sfc.plugin.SfcPlugin
> 
> ```
> 
> But there are no information about the 
> "/etc/openstack_deploy/openstack_user_config.yml" config file.
> I am not sure if I understand where ansible get the value of "{{ odl_ip 
> }}" and "{{ hostvars[group....
> 
> In the file "/opt/openstack-ansible/tests/test_inventory.py", I find out 
> that there is an entry for "opendaylight" in the
> class TestAnsibleInventoryFormatConstraints(unittest.TestCase).
> 
> 
> I assumed I must modify 
> "/etc/openstack_deploy/openstack_user_config.yml" like this :
> 
> ```
>     # /etc/openstack_deploy/openstack_user_config.yml
>     [...]
> 
>     # horizon
>     dashboard_hosts:
>       infra41:
>         ip: infra41.dom4.net
> 
>     # neutron server, agents (L3, etc)
>     network_hosts:
>       network41:
>         ip: network41.dom4.net
> 
>     opendaylight:
>       network41:
>         ip: network41.dom4.net
>     [...]
> ```
> 
> I have an infra node (with most of Openstack core services) and a 
> network node (dedicated to neutron). On my first try, I wanted to 
> install ODL on the network node (because I thought it will be deployed 
> in a LXC container). But I can dedicate an host to ODL if needed.
> 
> 
> Could someone gives me some hints on this ? My goal is to deploy my 
> Openstack environnement with the "networking-sfc" driver, and using OSA.
> 
> Maybe there are other method like "kolla-ansible", but I found that OSA 
> has a more dense documentation.
> 
> 
> Thanks you for your time.
> --
> Nicolas
> 
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