Open Stack

Hi,

Well, if you don't care about traffic separation between public, management and storage networks, and you don't need neutron vlan support, you can avoid using trunks. You can just have single br-mgmt bridge with all traffic going through it. You can even avoid creating bridge and lxc containers as well and do all deployment on bare metal. 
You can set no_containers [1] option inside openstack_user_config.yml for global_overrides section and avoid defining provider_networks overall. So OpenStack-Ansible is really flexible in that.

12.02.2021, 06:38, "Amey Abhyankar" <sco1984 at gmail.com>:
> On Thu, 11 Feb 2021 at 19:49, Satish Patel <satish.txt at gmail.com> wrote:
>>  On Wed, Feb 10, 2021 at 11:13 PM Amey Abhyankar <sco1984 at gmail.com> wrote:
>>  >
>>  > On Wed, 10 Feb 2021 at 20:12, Satish Patel <satish.txt at gmail.com> wrote:
>>  > >
>>  > > Hi Amey,
>>  > >
>>  > > I am running my cloud using openstack-ansible on centos 7.5 (on
>>  > > Production) and 8.x (on Lab because centos 8 soon end of life, my
>>  > > future plan is to migrate everything to ubuntu ).
>>  > >
>>  > > Answer to your question is you have two way to configure networking using OSA
>>  > >
>>  > > 1. Use systemd-networkd here is the example -
>>  > > http://paste.openstack.org/show/802517/
>>  > Thanks.
>>  > > 2. Use package network-scripts (This is legacy way to configure
>>  > > network on centOS /etc/sysconfig/network-scripts/* style) - You can
>>  > > see example on my blog how to deploy OSA on centos -
>>  > > https://satishdotpatel.github.io//build-openstack-cloud-using-openstack-ansible/
>>  > Nicely documented thanks.
>>  > Few questions =
>>  > 1) From the switch side, the port is 'access' port or a 'trunk' port?
>>
>>  All my switches run on trunk ports
>
> Thanks.
> Is it mandatory to have trunk ports for OSA installation?
> For PackStack with Mitaka & Queens, I didn't configure trunk ports and
> the setup has been working fine for the last 4 years.
>
>> and I have Cisco Nexus vPC that is
>>  why I created bond0 interface and created multiple VLAN/Bridges on top
>>  of that.
>>
>>  > 2) To configure compute node on the controller, what changes should I
>>  > make in my network config file?
>>
>>  I have the same VLAN/Bridge running on controllers and computes. so no
>>  special changes required to run the computer on the controller.
>>
>>  >
>>  > Regards,
>>  > Amey.
>>  > >
>>  > >
>>  > > On Wed, Feb 10, 2021 at 9:14 AM Amey Abhyankar <sco1984 at gmail.com> wrote:
>>  > > >
>>  > > > Hello Jonathan,
>>  > > >
>>  > > > On Wed, 10 Feb 2021 at 18:35, Jonathan Rosser
>>  > > > <jonathan.rosser at rd.bbc.co.uk> wrote:
>>  > > > >
>>  > > > > Hi Amey,
>>  > > > >
>>  > > > > The documentation that you linked to is specifically for the ansible
>>  > > > > deployment host, which can be separate from the OpenStack target hosts
>>  > > > > if you wish. The only requirement is that it has ssh access to the
>>  > > > > target hosts, by default this would be via the network attached to
>>  > > > > br-mgmt on those hosts.
>>  > > > >
>>  > > > > In terms of the target hosts networking, you should refer to
>>  > > > > https://docs.openstack.org/project-deploy-guide/openstack-ansible/latest/targethosts.html#configuring-the-network.
>>  > > > Yes I checked this reference.
>>  > > > >
>>  > > > > OpenStack-Ansible does not prescribe any particular method for
>>  > > > > setting up the host networking as this tends to be specific
>>  > > > > to the individual environment or deployer preferences.
>>  > > > I am looking for an example where to put the interface configurations
>>  > > > in CentOS 8.
>>  > > > But, I am unable to find any references specifically for CentOS/RHEL.
>>  > > > Hence I post the question here to get help from some1 who is already
>>  > > > running OpenStack on CentOS 8.
>>  > > >
>>  > > > Regards,
>>  > > > Amey.
>>  > > > >
>>  > > > > You should pick most appropriate network config tool for your
>>  > > > > OS/environment and create the bridges and networks listed in the
>>  > > > > table on the target hosts documentation.
>>  > > > >
>>  > > > > I would always recommend starting with an All-In-One deployment
>>  > > > > https://docs.openstack.org/openstack-ansible/latest/user/aio/quickstart.html.
>>  > > > > This will generate a complete test environment
>>  > > > > with all the host networking set up correctly and will serve as
>>  > > > > a reference example for a production deployment.
>>  > > > >
>>  > > > > Do join the #openstack-ansible IRC channel if you would like
>>  > > > > to discuss any of the options further.
>>  > > > >
>>  > > > > Regards,
>>  > > > > Jonathan.
>>  > > > >
>>  > > > > On 10/02/2021 10:09, Amey Abhyankar wrote:
>>  > > > > > Hello,
>>  > > > > >
>>  > > > > > I am trying to install OpenStack by referring following guides =
>>  > > > > >
>>  > > > > > 1) https://docs.openstack.org/project-deploy-guide/openstack-ansible/latest/deploymenthost.html
>>  > > > > > 2) https://docs.openstack.org/openstack-ansible/victoria/user/test/example.html
>>  > > > > >
>>  > > > > > In link number 2, there is a step to configure interfaces.
>>  > > > > > In CentOS 8 we don't have a /etc/network/interfaces file.
>>  > > > > > Which interface file should I configure?
>>  > > > > > Or do I need to create all virtual int's manually using nmcli?
>>  > > > > >
>>  > > > > > Pls suggest thanks.
>>  > > > > >
>>  > > > > > Regards,
>>  > > > > > Amey.
>>  > > > > >
>>  > > > > >
>>  > > > >
>>  > > >


-- 
Kind Regards,
Dmitriy Rabotyagov