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Message #58217
[Bug 1597609] Re: Single Vm instance assigned with two ips
[Expired for OpenStack Compute (nova) because there has been no activity
for 60 days.]
** Changed in: nova
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1597609
Title:
Single Vm instance assigned with two ips
Status in OpenStack Compute (nova):
Expired
Bug description:
While testing Netvirt 1 node openstack in csit, I could see two ips
assigned to a single vm instance.
Steps to be followed to reproduce:
----------------------------------
1. Create Network
2. Create subnet
3. Boot three vm instances in the same subnet
Expected Result:
---------------
Each vm instance should be assigned with one ip.
Actual Result:
--------------
A vm instance assigned with two ips.
Observation:
------------
first two vm instances properly assigned with ips (vm1 as 30.0.0.3 and vm2 as 30.0.0.4), where as the third vm instance assigned with two ips as (30.0.0.5
and 3.0.0.6) since the subnet range is 30.0.0.0/24 and Gateway is enabled.
after creating all three vm instances i printed them with nova show commands.
i could see the below output for third vm instance.
+--------------------------------------+----------------------------------------------------------------+
| Property | Value |
+--------------------------------------+----------------------------------------------------------------+
| OS-DCF:diskConfig | MANUAL |
| OS-EXT-AZ:availability_zone | nova |
| OS-EXT-SRV-ATTR:host | centos7-devstack-721 |
| OS-EXT-SRV-ATTR:hostname | mythirdinstance-1 |
| OS-EXT-SRV-ATTR:hypervisor_hostname | centos7-devstack-721 |
| OS-EXT-SRV-ATTR:instance_name | instance-00000003 |
| OS-EXT-SRV-ATTR:kernel_id | 55ce53be-9fd0-4df7-ab55-5e78a296376c |
| OS-EXT-SRV-ATTR:launch_index | 0 |
| OS-EXT-SRV-ATTR:ramdisk_id | 179666d0-e4f4-4a9b-bbf3-3e8f23fd5488 |
| OS-EXT-SRV-ATTR:reservation_id | r-k85fjf88 |
| OS-EXT-SRV-ATTR:root_device_name | /dev/vda |
| OS-EXT-SRV-ATTR:user_data | - |
| OS-EXT-STS:power_state | 1 |
| OS-EXT-STS:task_state | - |
| OS-EXT-STS:vm_state | active |
| OS-SRV-USG:launched_at | 2016-06-28T07:10:10.000000 |
| OS-SRV-USG:terminated_at | - |
| accessIPv4 | |
| accessIPv6 | |
| config_drive | True |
| created | 2016-06-28T07:10:05Z |
| description | - |
| flavor | m1.nano (42) |
| hostId | f7c621bc0d8cb4621e5a33dc1fdf12b1fd0adcfd96abc51eaf7c6e62 |
| host_status | UP |
| id | f7d294d6-9b23-40f5-9151-1d7a1f8168e8 |
| image | cirros-0.3.4-x86_64-uec (05d7928d-4221-4e7f-ad27-f9d0bcf3a742) |
| key_name | - |
| l2_network_1 network | 30.0.0.5, 30.0.0.6 |
| locked | False |
| metadata | {} |
| name | MyThirdInstance_1 |
| os-extended-volumes:volumes_attached | [] |
| progress | 0 |
| security_groups | default |
| status | ACTIVE |
| tenant_id | d99ecfb314dd4731ab47d73ccb5e6c9e |
| updated | 2016-06-28T07:10:10Z |
| user_id | 7f36ff94d6194308b647e720382b1f33 |
+--------------------------------------+----------------------------------------------------------------+
[jenkins@centos7-devstack-9113 devstack]>
when i check the ifconfig for the particular vm i could see the second ip (30.0.0.6) assigned to it.
where as in dump flows there are entries for both the ips.
as below:
cookie=0x0, duration=16.270s, table=20, n_packets=0, n_bytes=0,
priority=1024,arp,tun_id=0x43f,arp_tpa=30.0.0.6,arp_op=1
actions=move:NXM_OF_ETH_SRC[]->NXM_OF_ETH_DST[],set_field:fa:16:3e:b6:13:3e->eth_src,load:0x2->NXM_OF_ARP_OP[],move:NXM_NX_ARP_SHA[]->NXM_NX_ARP_THA[],move:NXM_OF_ARP_SPA[]->NXM_OF_ARP_TPA[],load:0xfa163eb6133e->NXM_NX_ARP_SHA[],load:0x1e000006->NXM_OF_ARP_SPA[],IN_PORT
cookie=0x0, duration=16.252s, table=20, n_packets=0, n_bytes=0,
priority=1024,arp,tun_id=0x43f,arp_tpa=30.0.0.5,arp_op=1
actions=move:NXM_OF_ETH_SRC[]->NXM_OF_ETH_DST[],set_field:fa:16:3e:5b:6a:6f->eth_src,load:0x2->NXM_OF_ARP_OP[],move:NXM_NX_ARP_SHA[]->NXM_NX_ARP_THA[],move:NXM_OF_ARP_SPA[]->NXM_OF_ARP_TPA[],load:0xfa163e5b6a6f->NXM_NX_ARP_SHA[],load:0x1e000005->NXM_OF_ARP_SPA[],IN_PORT
Please find the sandbox link for more details:
https://jenkins.opendaylight.org/sandbox/job/netvirt-csit-1node-openstack-mitaka-openstack-beryllium/11/
Attached the logs for reference, kindly let us know if any more
details required.
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References
