From thomas.king at gmail.com  Thu May 28 20:32:01 2020
From: thomas.king at gmail.com (Thomas King)
Date: Thu, 28 May 2020 14:32:01 -0600
Subject: [Openstack-mentoring] Neutron subnet with DHCP relay
Message-ID: <CAMD4D2KeHXkObd8Ow828OPds8nETdj=2jerF=VTxmS+X-htjHg@mail.gmail.com>

Good day,

We have Ironic running and connected via VLANs to nearby machines. We want
to extend this to other parts of our product development lab without
extending VLANs.

Using DHCP relay, we would point to a single IP address to serve DHCP
requests but I'm not entirely sure of the Neutron network/subnet
configuration, nor which IP address should be used for the relay agent on
the switch.

Is DHCP relay supported by Neutron?

My guess is to add a subnet in the provisioning network and point the relay
agent to the linuxbridge interface's IP:
14: brq467f6775-be: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
noqueue state UP group default qlen 1000
    link/ether e2:e9:09:7f:89:0b brd ff:ff:ff:ff:ff:ff
    inet 10.10.0.1/16 scope global brq467f6775-be
       valid_lft forever preferred_lft forever
    inet6 fe80::5400:52ff:fe85:d33d/64 scope link
       valid_lft forever preferred_lft forever

Thank you,
Tom King
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From amy at demarco.com  Thu May 28 21:04:04 2020
From: amy at demarco.com (Amy Marrich)
Date: Thu, 28 May 2020 16:04:04 -0500
Subject: [Openstack-mentoring] Neutron subnet with DHCP relay
In-Reply-To: <CAMD4D2KeHXkObd8Ow828OPds8nETdj=2jerF=VTxmS+X-htjHg@mail.gmail.com>
References: <CAMD4D2KeHXkObd8Ow828OPds8nETdj=2jerF=VTxmS+X-htjHg@mail.gmail.com>
Message-ID: <CAFs83QormU18_gbUZDeWvyjnoQoEgXbJndD+q=U-FeNWFsAXxg@mail.gmail.com>

Hey Tom,

Forwarding to the OpenStack discuss list where you might get more
assistance.

Thanks,

Amy (spotz)

On Thu, May 28, 2020 at 3:32 PM Thomas King <thomas.king at gmail.com> wrote:

> Good day,
>
> We have Ironic running and connected via VLANs to nearby machines. We want
> to extend this to other parts of our product development lab without
> extending VLANs.
>
> Using DHCP relay, we would point to a single IP address to serve DHCP
> requests but I'm not entirely sure of the Neutron network/subnet
> configuration, nor which IP address should be used for the relay agent on
> the switch.
>
> Is DHCP relay supported by Neutron?
>
> My guess is to add a subnet in the provisioning network and point the
> relay agent to the linuxbridge interface's IP:
> 14: brq467f6775-be: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
> noqueue state UP group default qlen 1000
>     link/ether e2:e9:09:7f:89:0b brd ff:ff:ff:ff:ff:ff
>     inet 10.10.0.1/16 scope global brq467f6775-be
>        valid_lft forever preferred_lft forever
>     inet6 fe80::5400:52ff:fe85:d33d/64 scope link
>        valid_lft forever preferred_lft forever
>
> Thank you,
> Tom King
> _______________________________________________
> openstack-mentoring mailing list
> openstack-mentoring at lists.openstack.org
> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-mentoring
>
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From thomas.king at gmail.com  Thu May 28 21:08:23 2020
From: thomas.king at gmail.com (Thomas King)
Date: Thu, 28 May 2020 15:08:23 -0600
Subject: [Openstack-mentoring] Neutron subnet with DHCP relay
In-Reply-To: <CAFs83QormU18_gbUZDeWvyjnoQoEgXbJndD+q=U-FeNWFsAXxg@mail.gmail.com>
References: <CAMD4D2KeHXkObd8Ow828OPds8nETdj=2jerF=VTxmS+X-htjHg@mail.gmail.com>
 <CAFs83QormU18_gbUZDeWvyjnoQoEgXbJndD+q=U-FeNWFsAXxg@mail.gmail.com>
Message-ID: <CAMD4D2LtzgSKVo=0-Q7XZtM7xyeK8+zchBRMU11yqMN8bZCsnQ@mail.gmail.com>

Thanks, that'd be great.

Tom King

On Thu, May 28, 2020 at 3:04 PM Amy Marrich <amy at demarco.com> wrote:

> Hey Tom,
>
> Forwarding to the OpenStack discuss list where you might get more
> assistance.
>
> Thanks,
>
> Amy (spotz)
>
> On Thu, May 28, 2020 at 3:32 PM Thomas King <thomas.king at gmail.com> wrote:
>
>> Good day,
>>
>> We have Ironic running and connected via VLANs to nearby machines. We
>> want to extend this to other parts of our product development lab without
>> extending VLANs.
>>
>> Using DHCP relay, we would point to a single IP address to serve DHCP
>> requests but I'm not entirely sure of the Neutron network/subnet
>> configuration, nor which IP address should be used for the relay agent on
>> the switch.
>>
>> Is DHCP relay supported by Neutron?
>>
>> My guess is to add a subnet in the provisioning network and point the
>> relay agent to the linuxbridge interface's IP:
>> 14: brq467f6775-be: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
>> noqueue state UP group default qlen 1000
>>     link/ether e2:e9:09:7f:89:0b brd ff:ff:ff:ff:ff:ff
>>     inet 10.10.0.1/16 scope global brq467f6775-be
>>        valid_lft forever preferred_lft forever
>>     inet6 fe80::5400:52ff:fe85:d33d/64 scope link
>>        valid_lft forever preferred_lft forever
>>
>> Thank you,
>> Tom King
>> _______________________________________________
>> openstack-mentoring mailing list
>> openstack-mentoring at lists.openstack.org
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-mentoring
>>
>
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From thomas.king at gmail.com  Fri May 29 16:47:11 2020
From: thomas.king at gmail.com (Thomas King)
Date: Fri, 29 May 2020 10:47:11 -0600
Subject: [Openstack-mentoring] Neutron subnet with DHCP relay
In-Reply-To: <CACny4qS3S84a_MV20HmHutwL0yGtMFkdqCEn98oOOaWby02GZA@mail.gmail.com>
References: <CAMD4D2KeHXkObd8Ow828OPds8nETdj=2jerF=VTxmS+X-htjHg@mail.gmail.com>
 <CAFs83QormU18_gbUZDeWvyjnoQoEgXbJndD+q=U-FeNWFsAXxg@mail.gmail.com>
 <CACNgkFz50Z6ihHF3nkT_7xAY-gePN-RyKHGbQvsea6km3JFCXA@mail.gmail.com>
 <CACny4qS3S84a_MV20HmHutwL0yGtMFkdqCEn98oOOaWby02GZA@mail.gmail.com>
Message-ID: <CAMD4D2JjT2SguRQbWLDGtnpbfgywBJi2H3-iFHsa=ruGBSJQRg@mail.gmail.com>

In the Triple-O docs for unicast DHCP relay, it doesn't exactly say which
IP address to target. Without deploying Triple-O, I'm not clear if the
relay IP should be the bridge interface or the DHCP device.

The first method makes sense because the gateway for that subnet wouldn't
be connected to the Ironic controller by layer 2 (unless we used VXLAN over
the physical network).

As an experiment, I created a second subnet on my provisioning network. The
original DHCP device port now has two IP addresses, one on each subnet.
That makes the second method possible if I targeted its original IP
address.

Thanks for the help and please let me know which method is correct.

Tom King

On Fri, May 29, 2020 at 3:15 AM Dan Sneddon <dsneddon at redhat.com> wrote:

> You probably want to enable Neutron segments and use the Neutron routed
> networks feature so you can use different subnets on different segments
> (layer 2 domains AKA VLANs) of the same network. You specify different
> values such as IP allocation pools and router address(es) for each subnet,
> and Ironic and Neutron will do the right thing. You need to enable segments
> in the Neutron configuration and restart the Neutron server.  I don’t think
> you will have to recreate the network. Behind the scenes, dnsmasq will be
> configured with multiple subnets and address scopes within the Neutron DHCP
> agent and the Ironic Inspector agent.
>
> Each segment/subnet will be given a different VLAN ID. As Dmitry
> mentioned, TripleO uses that method for the provisioning network, so you
> can use that as an example. The provisioning network in TripleO is the one
> referred to as the “control plane” network.
>
> -Dan
>
> On Fri, May 29, 2020 at 12:51 AM Dmitry Tantsur <dtantsur at redhat.com>
> wrote:
>
>> Hi Tom,
>>
>> I know for sure that people are using DHCP relay with ironic, I think the
>> TripleO documentation may give you some hints (adjusted to your presumably
>> non-TripleO environment):
>> http://tripleo.org/install/advanced_deployment/routed_spine_leaf_network.html#dhcp-relay-configuration
>>
>> Dmitry
>>
>> On Thu, May 28, 2020 at 11:06 PM Amy Marrich <amy at demarco.com> wrote:
>>
>>> Hey Tom,
>>>
>>> Forwarding to the OpenStack discuss list where you might get more
>>> assistance.
>>>
>>> Thanks,
>>>
>>> Amy (spotz)
>>>
>>> On Thu, May 28, 2020 at 3:32 PM Thomas King <thomas.king at gmail.com>
>>> wrote:
>>>
>>>> Good day,
>>>>
>>>> We have Ironic running and connected via VLANs to nearby machines. We
>>>> want to extend this to other parts of our product development lab without
>>>> extending VLANs.
>>>>
>>>> Using DHCP relay, we would point to a single IP address to serve DHCP
>>>> requests but I'm not entirely sure of the Neutron network/subnet
>>>> configuration, nor which IP address should be used for the relay agent on
>>>> the switch.
>>>>
>>>> Is DHCP relay supported by Neutron?
>>>>
>>>> My guess is to add a subnet in the provisioning network and point the
>>>> relay agent to the linuxbridge interface's IP:
>>>> 14: brq467f6775-be: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
>>>> noqueue state UP group default qlen 1000
>>>>     link/ether e2:e9:09:7f:89:0b brd ff:ff:ff:ff:ff:ff
>>>>     inet 10.10.0.1/16 scope global brq467f6775-be
>>>>        valid_lft forever preferred_lft forever
>>>>     inet6 fe80::5400:52ff:fe85:d33d/64 scope link
>>>>        valid_lft forever preferred_lft forever
>>>>
>>>> Thank you,
>>>> Tom King
>>>> _______________________________________________
>>>> openstack-mentoring mailing list
>>>> openstack-mentoring at lists.openstack.org
>>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-mentoring
>>>>
>>> --
> Dan Sneddon         |  Senior Principal Software Engineer
> dsneddon at redhat.com |  redhat.com/cloud
> dsneddon:irc        |  @dxs:twitter
>
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From dtantsur at redhat.com  Fri May 29 07:49:30 2020
From: dtantsur at redhat.com (Dmitry Tantsur)
Date: Fri, 29 May 2020 09:49:30 +0200
Subject: [Openstack-mentoring] Neutron subnet with DHCP relay
In-Reply-To: <CAFs83QormU18_gbUZDeWvyjnoQoEgXbJndD+q=U-FeNWFsAXxg@mail.gmail.com>
References: <CAMD4D2KeHXkObd8Ow828OPds8nETdj=2jerF=VTxmS+X-htjHg@mail.gmail.com>
 <CAFs83QormU18_gbUZDeWvyjnoQoEgXbJndD+q=U-FeNWFsAXxg@mail.gmail.com>
Message-ID: <CACNgkFz50Z6ihHF3nkT_7xAY-gePN-RyKHGbQvsea6km3JFCXA@mail.gmail.com>

Hi Tom,

I know for sure that people are using DHCP relay with ironic, I think the
TripleO documentation may give you some hints (adjusted to your presumably
non-TripleO environment):
http://tripleo.org/install/advanced_deployment/routed_spine_leaf_network.html#dhcp-relay-configuration

Dmitry

On Thu, May 28, 2020 at 11:06 PM Amy Marrich <amy at demarco.com> wrote:

> Hey Tom,
>
> Forwarding to the OpenStack discuss list where you might get more
> assistance.
>
> Thanks,
>
> Amy (spotz)
>
> On Thu, May 28, 2020 at 3:32 PM Thomas King <thomas.king at gmail.com> wrote:
>
>> Good day,
>>
>> We have Ironic running and connected via VLANs to nearby machines. We
>> want to extend this to other parts of our product development lab without
>> extending VLANs.
>>
>> Using DHCP relay, we would point to a single IP address to serve DHCP
>> requests but I'm not entirely sure of the Neutron network/subnet
>> configuration, nor which IP address should be used for the relay agent on
>> the switch.
>>
>> Is DHCP relay supported by Neutron?
>>
>> My guess is to add a subnet in the provisioning network and point the
>> relay agent to the linuxbridge interface's IP:
>> 14: brq467f6775-be: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
>> noqueue state UP group default qlen 1000
>>     link/ether e2:e9:09:7f:89:0b brd ff:ff:ff:ff:ff:ff
>>     inet 10.10.0.1/16 scope global brq467f6775-be
>>        valid_lft forever preferred_lft forever
>>     inet6 fe80::5400:52ff:fe85:d33d/64 scope link
>>        valid_lft forever preferred_lft forever
>>
>> Thank you,
>> Tom King
>> _______________________________________________
>> openstack-mentoring mailing list
>> openstack-mentoring at lists.openstack.org
>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-mentoring
>>
>
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From dsneddon at redhat.com  Fri May 29 09:14:51 2020
From: dsneddon at redhat.com (Dan Sneddon)
Date: Fri, 29 May 2020 02:14:51 -0700
Subject: [Openstack-mentoring] Neutron subnet with DHCP relay
In-Reply-To: <CACNgkFz50Z6ihHF3nkT_7xAY-gePN-RyKHGbQvsea6km3JFCXA@mail.gmail.com>
References: <CAMD4D2KeHXkObd8Ow828OPds8nETdj=2jerF=VTxmS+X-htjHg@mail.gmail.com>
 <CAFs83QormU18_gbUZDeWvyjnoQoEgXbJndD+q=U-FeNWFsAXxg@mail.gmail.com>
 <CACNgkFz50Z6ihHF3nkT_7xAY-gePN-RyKHGbQvsea6km3JFCXA@mail.gmail.com>
Message-ID: <CACny4qS3S84a_MV20HmHutwL0yGtMFkdqCEn98oOOaWby02GZA@mail.gmail.com>

You probably want to enable Neutron segments and use the Neutron routed
networks feature so you can use different subnets on different segments
(layer 2 domains AKA VLANs) of the same network. You specify different
values such as IP allocation pools and router address(es) for each subnet,
and Ironic and Neutron will do the right thing. You need to enable segments
in the Neutron configuration and restart the Neutron server.  I don’t think
you will have to recreate the network. Behind the scenes, dnsmasq will be
configured with multiple subnets and address scopes within the Neutron DHCP
agent and the Ironic Inspector agent.

Each segment/subnet will be given a different VLAN ID. As Dmitry mentioned,
TripleO uses that method for the provisioning network, so you can use that
as an example. The provisioning network in TripleO is the one referred to
as the “control plane” network.

-Dan

On Fri, May 29, 2020 at 12:51 AM Dmitry Tantsur <dtantsur at redhat.com> wrote:

> Hi Tom,
>
> I know for sure that people are using DHCP relay with ironic, I think the
> TripleO documentation may give you some hints (adjusted to your presumably
> non-TripleO environment):
> http://tripleo.org/install/advanced_deployment/routed_spine_leaf_network.html#dhcp-relay-configuration
>
> Dmitry
>
> On Thu, May 28, 2020 at 11:06 PM Amy Marrich <amy at demarco.com> wrote:
>
>> Hey Tom,
>>
>> Forwarding to the OpenStack discuss list where you might get more
>> assistance.
>>
>> Thanks,
>>
>> Amy (spotz)
>>
>> On Thu, May 28, 2020 at 3:32 PM Thomas King <thomas.king at gmail.com>
>> wrote:
>>
>>> Good day,
>>>
>>> We have Ironic running and connected via VLANs to nearby machines. We
>>> want to extend this to other parts of our product development lab without
>>> extending VLANs.
>>>
>>> Using DHCP relay, we would point to a single IP address to serve DHCP
>>> requests but I'm not entirely sure of the Neutron network/subnet
>>> configuration, nor which IP address should be used for the relay agent on
>>> the switch.
>>>
>>> Is DHCP relay supported by Neutron?
>>>
>>> My guess is to add a subnet in the provisioning network and point the
>>> relay agent to the linuxbridge interface's IP:
>>> 14: brq467f6775-be: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc
>>> noqueue state UP group default qlen 1000
>>>     link/ether e2:e9:09:7f:89:0b brd ff:ff:ff:ff:ff:ff
>>>     inet 10.10.0.1/16 scope global brq467f6775-be
>>>        valid_lft forever preferred_lft forever
>>>     inet6 fe80::5400:52ff:fe85:d33d/64 scope link
>>>        valid_lft forever preferred_lft forever
>>>
>>> Thank you,
>>> Tom King
>>> _______________________________________________
>>> openstack-mentoring mailing list
>>> openstack-mentoring at lists.openstack.org
>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-mentoring
>>>
>> --
Dan Sneddon         |  Senior Principal Software Engineer
dsneddon at redhat.com |  redhat.com/cloud
dsneddon:irc        |  @dxs:twitter
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From amy at demarco.com  Fri May 29 20:37:43 2020
From: amy at demarco.com (Amy Marrich)
Date: Fri, 29 May 2020 15:37:43 -0500
Subject: [Openstack-mentoring] [Diversity] [PTG] Diversity WG at PTG
Message-ID: <CAFs83QrM_m4GKeSU0Y=hzCUEByYVxP32zwFwWL-LRF8A4b+MEQ@mail.gmail.com>

The Diversity and Inclusion WG will be having a session at 16:00 UTC on
Monday at https://meetpad.opendev.org/PTGDiversityAndInclusion

As a WG reporting to the OSF Board we would like to invite all OSF projects
to come and learn what the WG can do for their project. The WG oversees the
Diversity and Inclusion surveys as well as the OpenStack mentoring program.

Hope to see new faces on Monday!

Amy Marrich (spotz)
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