Hi Anda,
tipically you would use 2 networks:
ctlplane = pxe / dhcp network
external = used for remote connectivity and management of the
undercloud/overcloud nodes (routed network)
You should have at least the external network on director and the
controller nodes. This would be the network you would connect to manage the
overcloud (horizon, openstack endpoints).
See the attached picture.
On Wed, Jan 31, 2018 at 10:40 AM, Anda Nicolae <anicolae(a)lenovo.com> wrote:
 I've just run 'neutron net-list' on the undercloud node
and I have the 2
 networks, ctlplane and external.
 My belief was that I don't need the external network, I only need the
 provision (ctlplane) network for the deployment.
 I don't have a DHCP server for my external network.
 Do I need to set the external IP address for the compute node and for the
 controller node in the yaml files from templates folder?
 Thanks,
 Anda
 *From:* Pedro Sousa [mailto:pgsousa@gmail.com]
 *Sent:* Wednesday, January 31, 2018 12:32 PM
 *To:* Anda Nicolae
 *Cc:* rasca(a)redhat.com; users(a)lists.rdoproject.org
 *Subject:* Re: [rdo-users] RHOSP 10 failed overcloud deployment
 Hi Anda,
 some things you could check:
 Do you have 2 networks on director (ctlplane and external) and are they
 reachable from the overcloud nodes?
 Seems to me that you have network issues and that's because you're seeing
 those long timeouts.
 For "Message: No valid host was found. There are not enough hosts
 available" message you could check "/var/log/nova/nova-conductor.log".
 Regards
 On Wed, Jan 31, 2018 at 10:14 AM, Anda Nicolae <anicolae(a)lenovo.com>
 wrote:
 I've let the deployment run overnight and it failed after almost 4hrs with
 the errors below. Do you happen to know the config file where I can
 decrease the timeout? I looked in /etc/nova/nova.conf and in ironic config
 files but I couldn't find anything relevant.
 The errors are:
 [overcloud.Compute.0]: CREATE_FAILED  ResourceInError:
 resources[0].resources.NovaCompute: Went to status ERROR due to "Message:
 Unknown, Code: Unknown"
 [overcloud.Controller.0]: CREATE_FAILED  Resource CREATE failed:
 ResourceInError: resources.Controller: Went to status ERROR due to
 "Message: No valid host was found. There are not enough hosts available.,
 Code: 500"
 It is unclear to me why the above errors occur, since in my
 instackenv.json I declared node capabilities for both the computer and the
 controller node to be greater than the compute and controller flavors from
 'openstack flavor list'.
 However, I've found this link and I am looking over it:
 
https://docs.openstack.org/ironic/latest/admin/troubleshooting.html#nova-
 returns-no-valid-host-was-found-error
 Thanks,
 Anda
 -----Original Message-----
 From: Raoul Scarazzini [mailto:rasca@redhat.com]
 Sent: Tuesday, January 30, 2018 8:17 PM
 To: Anda Nicolae; users(a)lists.rdoproject.org
 Subject: Re: [rdo-users] RHOSP 10 failed overcloud deployment
 On 01/30/2018 04:39 PM, Anda Nicolae wrote:
 > Got it.
 >
 > I've noticed that it spends quite some time in CREATE_IN_PROGRESS state
 for OS::Heat::ResourceGroup resource (on Controller node).
 > Overcloud deployment fails after 4h. I will check in which config file
 is the overcloud deployment timeout configured and decrease it.
 >
 > Thanks,
 > Anda
 Check also network settings. 4h timeout is the default when something is
 unreachable.
 --
 Raoul Scarazzini
 rasca(a)redhat.com
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