Bug 1284124 - [RFE][spine-leaf] Use a DHCP Helper with the OSP Director
[RFE][spine-leaf] Use a DHCP Helper with the OSP Director
Product: Red Hat OpenStack
Classification: Red Hat
Component: instack-undercloud (Show other bugs)
7.0 (Kilo)
Unspecified Unspecified
medium Severity medium
: Upstream M2
: 13.0 (Queens)
Assigned To: Dan Sneddon
Alexander Chuzhoy
: FutureFeature
Depends On:
Blocks: 1214284 1442136
  Show dependency treegraph
Reported: 2015-11-20 17:42 EST by Jeremy
Modified: 2018-05-29 15:54 EDT (History)
22 users (show)

See Also:
Fixed In Version: openstack-neutron-12.0.0-0.20180222093622.abb60c6.el7ost instack-undercloud-8.2.1-0.20180228034814.945b1d0.el7ost puppet-ironic-12.3.1-0.20180221115553.12ab03d.el7ost
Doc Type: Enhancement
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Type: Bug
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External Trackers
Tracker ID Priority Status Summary Last Updated
OpenStack gerrit 421009 None master: MERGED tripleo-specs: blueprint tripleo-routed-networks-deployment (I72861ce8adfeff67b894cf389f7096cde8be9258) 2018-02-28 08:17 EST
OpenStack gerrit 436716 None master: MERGED puppet-ironic: Multiple DHCP Subnets for Ironic Inspector (Ie49b07ffe948576f5d9330cf11ee014aef4b282d) 2018-02-28 08:17 EST
OpenStack gerrit 437544 None master: MERGED instack-undercloud: Tripleo routed networks ironic inspector, and Undercloud (I4b384bab2af9f6ba07a137a37f4098a00ce18bc0) 2018-02-28 08:17 EST
OpenStack gerrit 438171 None master: MERGED neutron: Only add "on-link" routes for L2 adjacent subnets (Iae889e9226a61059cd4f3d37fbe48d013b7a3482) 2018-02-28 08:17 EST

  None (edit)
Description Jeremy 2015-11-20 17:42:42 EST
Description of problem:
We need to have the OpenStack Platform Director (undercloud) in a separate layer 2 network from it's overcloud provisioning interfaces. We would like to accomplish this by using a DHCP Helper to forward overcloud discovery and provisioning DHCP requests, to the undercloud.

We have attempted the use of a DHCP Helper, but it seems that the discovery; introspection image does not correctly handle configuring a default gateway on an overcloud provisioning interface, even when a gateway is supplied (by a modified ironic discovery dnsmasq configuration). We see the "router" DHCP option sent to the discovery image, yet the discovery image does not configure the provisioning interface with a default gateway - it can not reach the (separated) undercloud.

Version-Release number of selected component (if applicable):

Additional info:
Comment 3 Mike Burns 2016-04-07 16:57:01 EDT
This bug did not make the OSP 8.0 release.  It is being deferred to OSP 10.
Comment 24 Bob Fournier 2018-04-04 16:06:34 EDT
This has been verified with the Spine/Leaf undercloud testing using DHCP relay.
Comment 25 Alexander Chuzhoy 2018-04-04 16:23:24 EDT

Was able to introspect nodes residing in different leafs.

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