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Message #91654
[Bug 2012391] Re: FQDN inside guest VM is not the same as dns_assignment on network port
Hello Walid:
According to the information provided, Neutron is sending the correct
information to Nova. The server host name should be retrieved from
port.dns_assignment.fqdn, as in [1]. Actually this Nova patch was merged
in Yoga. If the metadata retrieve doesn't have this information, you
should ask this question to Nova folks. Before that, please check you
have [1] in your deployment.
Regards.
[1]https://review.opendev.org/c/openstack/nova/+/778549/7/nova/api/openstack/compute/schemas/servers.py#b362
** Also affects: nova
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2012391
Title:
FQDN inside guest VM is not the same as dns_assignment on network port
Status in neutron:
New
Status in OpenStack Compute (nova):
New
Bug description:
Hi,
Here is what we're trying to achieve :
- create a tenant associated to a provider network (vlan based, no FIP)
- create a dns zone associated to this tenant with Designate (basically, <tenant>.<basedomain>)
- create instances within this tenant which will have recordsets created automatically in the DNS zone in the form <instance>.<tenant>.<basedomain>
- the FQDN inside the VM instance should be what is set in the DNS zone associated to the tenant (so <instance>.<tenant>.<basedomain>)
We're running Charmed Openstack on the yoga/stable channel on Ubuntu 20.04.
We're also using OVN.
Basically, everything that I explained is working and you'll see in the example below that even the instance's network port has the good dns_assignment attribute value with a fqdn in the form <instance>.<tenant>.<basedomain> *but* inside the guest instance, there is no way to get the proper FQDN, neither from "hostname/hostnamectl" nor from the Openstack metadata.
We're always getting the <instance>.<basedomain> formed FQDN.
We don't even see any reference to it inside the metadata, the closest we get is the project_id but not the name.
Here are all the informations I could gathered to describe our issue :
===========================================================================================================
##########################################################################################
### OPENSTACK SIDE
##########################################################################################
ubuntu@testcloud1:~$ openstack project show test-terraform
+-------------+---------------------------------------------------------------------------------------------+
| Field | Value |
+-------------+---------------------------------------------------------------------------------------------+
| description | tenant created by terraform for test-terraform |
| domain_id | a68af68161ee4515a5a3d76095cd4d94 |
| enabled | True |
| id | 5d3f1ee6a825498696ce1a30f34bb119 |
| is_domain | False |
| name | test-terraform |
| options | {} |
| parent_id | a68af68161ee4515a5a3d76095cd4d94 |
| tags | ['createdBy=terraform', 'ownerEmail=support@xxxxxxxxxxxx', 'ownerName=cloud', 'zone=b2b'] |
+-------------+---------------------------------------------------------------------------------------------+
ubuntu@testcloud1:~$ openstack network show 04d4287b-b338-460c-af5c-552043dbace2
+---------------------------+---------------------------------------------------------------------------------------------------------+
| Field | Value |
+---------------------------+---------------------------------------------------------------------------------------------------------+
| admin_state_up | UP |
| availability_zone_hints | |
| availability_zones | |
| created_at | 2023-02-09T15:49:39Z |
| description | |
| dns_domain | test-terraform.ops.testcloud.fr. |
| id | 04d4287b-b338-460c-af5c-552043dbace2 |
| ipv4_address_scope | None |
| ipv6_address_scope | None |
| is_default | None |
| is_vlan_transparent | None |
| mtu | 9000 |
| name | test-terraform-default |
| port_security_enabled | True |
| project_id | 5d3f1ee6a825498696ce1a30f34bb119 |
| provider:network_type | vlan |
| provider:physical_network | dcfabric |
| provider:segmentation_id | 1012 |
| qos_policy_id | None |
| revision_number | 3 |
| router:external | Internal |
| segments | None |
| shared | False |
| status | ACTIVE |
| subnets | 50d94a98-b288-4ed6-a301-7f1e2a18227b |
| tags | aciEpg, createdBy=terraform, default=true, ownerEmail=support@xxxxxxxxxxxx, ownerName=cloud, zone=b2b |
| updated_at | 2023-02-09T15:49:46Z |
+---------------------------+---------------------------------------------------------------------------------------------------------+
ubuntu@testcloud1:~$ openstack subnet show 50d94a98-b288-4ed6-a301-7f1e2a18227b
+----------------------+---------------------------------------------------------------------------------------------------------+
| Field | Value |
+----------------------+---------------------------------------------------------------------------------------------------------+
| allocation_pools | 10.27.192.194-10.27.192.254 |
| cidr | 10.27.192.0/19 |
| created_at | 2023-02-09T15:49:46Z |
| description | |
| dns_nameservers | 10.53.96.31, 10.53.96.32 |
| dns_publish_fixed_ip | None |
| enable_dhcp | True |
| gateway_ip | 10.27.192.1 |
| host_routes | |
| id | 50d94a98-b288-4ed6-a301-7f1e2a18227b |
| ip_version | 4 |
| ipv6_address_mode | None |
| ipv6_ra_mode | None |
| name | test-terraform-28 |
| network_id | 04d4287b-b338-460c-af5c-552043dbace2 |
| project_id | 5d3f1ee6a825498696ce1a30f34bb119 |
| revision_number | 1 |
| segment_id | None |
| service_types | |
| subnetpool_id | None |
| tags | aciEpg, createdBy=terraform, default=true, ownerEmail=support@xxxxxxxxxxxx, ownerName=cloud, zone=b2b |
| updated_at | 2023-02-09T15:49:52Z |
+----------------------+---------------------------------------------------------------------------------------------------------+
ubuntu@testcloud1:~$ openstack zone show 10d2152f-3b49-4f29-8027-b0c7e79a497a --all-projects
+----------------+--------------------------------------+
| Field | Value |
+----------------+--------------------------------------+
| action | NONE |
| attributes | |
| created_at | 2023-02-09T15:49:39.000000 |
| description | default tenant zone |
| email | support@xxxxxxxxxxxx |
| id | 10d2152f-3b49-4f29-8027-b0c7e79a497a |
| masters | |
| name | test-terraform.ops.testcloud.fr. |
| pool_id | 794ccc2c-d751-44fe-b57f-8894c9f5c842 |
| project_id | 5d3f1ee6a825498696ce1a30f34bb119 |
| serial | 1679402949 |
| status | ACTIVE |
| transferred_at | 2023-03-21T12:49:31.000000 |
| ttl | 3600 |
| type | PRIMARY |
| updated_at | 2023-03-21T12:50:14.000000 |
| version | 1229096 |
+----------------+--------------------------------------+
ubuntu@testcloud1:~$ openstack recordset list 10d2152f-3b49-4f29-8027-b0c7e79a497a --all-projects
+--------------------------------------+----------------------------------+-------------------------------------------------+------+---------------------------------------------------+--------+--------+
| id | project_id | name | type | records | status | action |
+--------------------------------------+----------------------------------+-------------------------------------------------+------+---------------------------------------------------+--------+--------+
| da21623f-f392-4d3d-8d1f-c78388fad31e | 5d3f1ee6a825498696ce1a30f34bb119 | test-terraform.ops.testcloud.fr. | SOA | ns2.designate.testcloud.fr. | ACTIVE | NONE |
| | | | | support.testcloud.fr. 1679403279 3547 600 86400 | | |
| | | | | 3600 | | |
| f85010e8-ceac-479d-b08b-7a10e8f5fa82 | 5d3f1ee6a825498696ce1a30f34bb119 | test-terraform.ops.testcloud.fr. | NS | ns3.designate.testcloud.fr. | ACTIVE | NONE |
| | | | | ns2.designate.testcloud.fr. | | |
| | | | | ns1.designate.testcloud.fr. | | |
| f37ab515-da5c-49dd-a44e-b4667ab72532 | 5d3f1ee6a825498696ce1a30f34bb119 | toto.test-terraform.ops.testcloud.fr. | A | 10.27.192.218 | ACTIVE | NONE |
| aebd9079-e88f-4a7b-b2a9-682f84e5b63e | 5d3f1ee6a825498696ce1a30f34bb119 | test2-cm-az1.test-terraform.ops.testcloud.fr. | A | 10.27.192.230 | ACTIVE | NONE |
| d92d84b6-47f8-4178-a1ad-db54031aab62 | 5d3f1ee6a825498696ce1a30f34bb119 | test1-cm-az1.test-terraform.ops.testcloud.fr. | A | 10.27.192.197 | ACTIVE | NONE |
| bfe15a2a-031b-4b6b-9487-af689ff25bf2 | 5d3f1ee6a825498696ce1a30f34bb119 | test-volumes.test-terraform.ops.testcloud.fr. | A | 10.27.192.228 | ACTIVE | NONE |
+--------------------------------------+----------------------------------+-------------------------------------------------+------+---------------------------------------------------+--------+--------+
ubuntu@testcloud1:~$ openstack port show d4b429b1-f4a8-4b28-a8dd-97a4e7650dc2
+-------------------------+-------------------------------------------------------------------------------------------------------------+
| Field | Value |
+-------------------------+-------------------------------------------------------------------------------------------------------------+
| admin_state_up | UP |
| allowed_address_pairs | |
| binding_host_id | dlpe2v23513.maas.testcloud.fr |
| binding_profile | |
| binding_vif_details | bound_drivers.0='ovn', connectivity='l2', port_filter='True' |
| binding_vif_type | ovs |
| binding_vnic_type | normal |
| created_at | 2023-03-20T16:58:18Z |
| data_plane_status | None |
| description | |
| device_id | b1c38ba2-6543-4d7a-87b3-bd0e78f88302 |
| device_owner | compute:b2b |
| device_profile | None |
| dns_assignment | fqdn='test-volumes.test-terraform.ops.testcloud.fr.', hostname='test-volumes', ip_address='10.27.192.228' |
| dns_domain | |
| dns_name | test-volumes |
| extra_dhcp_opts | |
| fixed_ips | ip_address='10.27.192.228', subnet_id='50d94a98-b288-4ed6-a301-7f1e2a18227b' |
| id | d4b429b1-f4a8-4b28-a8dd-97a4e7650dc2 |
| ip_allocation | immediate |
| mac_address | fa:16:3e:00:df:c1 |
| name | |
| network_id | 04d4287b-b338-460c-af5c-552043dbace2 |
| numa_affinity_policy | None |
| port_security_enabled | True |
| project_id | 5d3f1ee6a825498696ce1a30f34bb119 |
| propagate_uplink_status | None |
| qos_network_policy_id | None |
| qos_policy_id | None |
| resource_request | None |
| revision_number | 5 |
| security_group_ids | e364d92f-7f88-46b1-bd9a-8d2fe5753c59 |
| status | ACTIVE |
| tags | |
| trunk_details | None |
| updated_at | 2023-03-20T16:58:25Z |
+-------------------------+-------------------------------------------------------------------------------------------------------------+
##########################################################################################
### GUEST INSTANCE SIDE
##########################################################################################
[root@test-volumes ~]# hostname -f
test-volumes
[root@test-volumes ~]# hostnamectl status
Static hostname: test-volumes
Icon name: computer-vm
Chassis: vm
Machine ID: b1c38ba265434d7a87b3bd0e78f88302
Boot ID: a584aef6e4474f4a9284592a2337c7ed
Virtualization: kvm
Operating System: Ubuntu 22.04.1 LTS
Kernel: Linux 5.15.0-48-generic
Architecture: x86-64
Hardware Vendor: OpenStack Foundation
Hardware Model: OpenStack Nova
[root@test-volumes ~]# curl -s http://169.254.169.254/openstack/latest/meta_data.json | jq
{
"uuid": "b1c38ba2-6543-4d7a-87b3-bd0e78f88302",
"hostname": "test-volumes.ops.testcloud.fr.",
"name": "test-volumes",
"launch_index": 0,
"availability_zone": "b2b",
"random_seed": "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",
"project_id": "5d3f1ee6a825498696ce1a30f34bb119",
"devices": [],
"dedicated_cpus": []
}
[root@test-volumes ~]# curl -s http://169.254.169.254/openstack/latest/network_data.json | jq
{
"links": [
{
"id": "tapd4b429b1-f4",
"vif_id": "d4b429b1-f4a8-4b28-a8dd-97a4e7650dc2",
"type": "ovs",
"mtu": 9000,
"ethernet_mac_address": "fa:16:3e:00:df:c1"
}
],
"networks": [
{
"id": "network0",
"type": "ipv4_dhcp",
"link": "tapd4b429b1-f4",
"network_id": "04d4287b-b338-460c-af5c-552043dbace2"
}
],
"services": [
{
"type": "dns",
"address": "10.53.96.31"
},
{
"type": "dns",
"address": "10.53.96.32"
}
]
}
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References
