Name server no more accessible during devstack install on Ubuntu 18.04

asked 2019-05-20 08:26:15 -0600

hpf97 gravatar image

Dear all, I hope that someone could help me. I want to install on one computer under Ubuntu 18.04 LTS without VirtualBox: devstack + heat + murano, in their latest version on git repository. My PC has only one NIC (static IPv4 : 192.168.50.201, and gateway 192.168.50.1) and I would like my instance with floating IPs being accessible from the host PC (of course) but also from the ones on the server network as my host. For the openstack installation, I follow the "All-In-One" documentation from OpenStack with devstack : https://docs.openstack.org/devstack/latest/guides/single-machine.html (https://docs.openstack.org/devstack/l...)

My local.conf is the following :


[[local|localrc]] ADMIN_PASSWORD=xxxxxx DATABASE_PASSWORD=xxxxxx RABBIT_PASSWORD=xxxxxx SERVICE_PASSWORD=$ADMIN_PASSWORD

disable_service n-net ENABLED_SERVICES+=,q-svc,q-dhcp,q-meta,q-agt,q-l3

HOST_IP=192.168.50.201 Q_USE_SECGROUP=True FLOATING_RANGE="192.168.50.0/24" FIXED_RANGE="10.11.12.0/24" Q_FLOATING_ALLOCATION_POOL=start=192.168.50.221,end=192.168.50.254 PUBLIC_NETWORK_GATEWAY="192.168.50.1" PUBLIC_INTERFACE=enp0s31f6

Q_USE_PROVIDERNET_FOR_PUBLIC=True OVS_PHYSICAL_BRIDGE=br-ex PUBLIC_BRIDGE=br-ex OVS_BRIDGE_MAPPINGS=public:br-ex

enable_plugin heat https://git.openstack.org/openstack/heat enable_service h-eng h-api h-api-cfn h-api-cw enable_plugin heat-dashboard https://git.openstack.org/openstack/heat-dashboard (https://git.openstack.org/openstack/h...) enable_plugin murano https://git.openstack.org/openstack/murano (https://git.openstack.org/openstack/m...) disable_service tempest`


At the begining, the PC has access to the Internet, can make some DNS request (server names : 8.8.8.8, 8.8.4.4). The installation goes on, DevStack seems to be OK, so for Heat and then arrives the download of the cirros image. And here i have an error that "download.cirros-cloud.net" cannot be resolved. Then if I test DNS request (ping http://google.com) it fails. But if a new "netplan apply" it works again.

Can someone give me some advice on how to correct this and end this installation ?

By advance, thanks for you help/

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