[libvirt-users] libvirt/dnsmasq is not adhering to static DHCP assignments

[Yalan Zhang]

Please check the dnsmasq hostsfile, should have all the records there:

# cat /var/lib/libvirt/dnsmasq/osc_mgmt.hostsfile
52:54:00:2c:85:92,192.168.80.1,openstack-controller-00
52:54:00:e2:4b:25,192.168.80.2,openstack-database-00
52:54:00:50:91:04,192.168.80.3,openstack-keystone-00
52:54:00:fe:5b:36,192.168.80.7,openstack-rabbitmq-00
52:54:00:95:ca:bd,192.168.80.5,openstack-glance-00





-------
Best Regards,
Yalan Zhang
IRC: yalzhang
Internal phone: 8389413

On Mon, Oct 30, 2017 at 8:26 AM, Dagmawi Biru <admin at dbvoid.com> wrote:

> Given the following network configuration:
> ===========
> <network>
>   <name>osc_mgmt</name>
>   <uuid>d93fe709-14ae-4a0e-8989-aeaa8c76c513</uuid>
>   <forward mode='route'/>
>   <bridge name='osc_mgmt' stp='on' delay='0'/>
>   <mac address='52:54:00:3f:fe:10'/>
>   <ip address='192.168.80.254' netmask='255.255.255.0'>
>     <dhcp>
>       <range start='192.168.80.1' end='192.168.80.200'/>
>       <host mac='52:54:00:2c:85:92' name='openstack-controller-00'
> ip='192.168.80.1'/>
>       <host mac='52:54:00:e2:4b:25' name='openstack-database-00'
> ip='192.168.80.2'/>
>       <host mac='52:54:00:50:91:04' name='openstack-keystone-00'
> ip='192.168.80.3'/>
>       <host mac='52:54:00:fe:5b:36' name='openstack-rabbitmq-00'
> ip='192.168.80.7'/>
>       <host mac='52:54:00:95:ca:bd' name='openstack-glance-00'
> ip='192.168.80.5'/>
>     </dhcp>
>   </ip>
> </network>
>
> When attempting to bring up the relevant interface in the virtual machine,
> I get an incorrect IP address assigned, different from the one I statically
> set up per the XML above. As you can see, the device with MAC
> '52:54:00:e2:4b:25' should really be getting 192.168.80.2, but what happens
> when we bring this interface up is this:
>
> ===========
> root at openstack-database-00:/home/osc# ifup ens11
> Internet Systems Consortium DHCP Client 4.3.3
> Copyright 2004-2015 Internet Systems Consortium.
> All rights reserved.
> For info, please visit https://www.isc.org/software/dhcp/
>
> Listening on LPF/ens11/...
> Sending on   LPF/ens11/...
> Sending on   Socket/fallback
> DHCPDISCOVER on ens11 to 255.255.255.255 port 67 interval 3
> (xid=0x6769e42a)
> DHCPREQUEST of 192.168.80.27 on ens11 to 255.255.255.255 port 67
> (xid=0x2ae46967)
> DHCPOFFER of 192.168.80.27 from 192.168.80.254
> DHCPACK of 192.168.80.27 from 192.168.80.254
> bound to 192.168.80.27 -- renewal in 1407 seconds.
>
>
> Some additional info about the VM and network it's attached to
> ===========
>
> [root at dragon dnsmasq]# virsh domiflist openstack-database-00
> Interface  Type       Source     Model       MAC
> -------------------------------------------------------
> vnet12     bridge     br20       virtio      52:54:00:6c:ce:b9
> vnet13     network    VM_MGMT    rtl8139     52:54:00:7d:ca:87
> vnet14     network    osc_mgmt   rtl8139     52:54:00:e2:4b:25
>
> [root at dragon dnsmasq]# virsh net-info osc_mgmt
> Name:           osc_mgmt
> UUID:           d93fe709-14ae-4a0e-8989-aeaa8c76c513
> Active:         yes
> Persistent:     yes
> Autostart:      yes
> Bridge:         osc_mgmt
> ===========
>
>
> What's strange is that the first VM seems to work correctly and gets an
> assigned address of 192.168.80.1, but for some reason the others don't. Any
> ideas?
>
>
>
>
> _______________________________________________
> libvirt-users mailing list
> libvirt-users at redhat.com
> https://www.redhat.com/mailman/listinfo/libvirt-users
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listman.redhat.com/archives/libvirt-users/attachments/20171030/9fc73be1/attachment.htm>