openstack team mailing list archive

[Wolfgang Hennerbichler <wolfgang.hennerbichler@xxxxxxxxxxxxxxxx>]

Thanks,

I believe I've had some issues due to fiddling around in the database 
too much. I've dropped the db, synced it again and now it works.

thanks a lot.
Wolfgang

On 07/23/2012 04:37 AM, Dan Wendlandt wrote:
> In Essex, I've seen issues like this if your fixed_ips table in the nova
> database has multiple entries for the same address (even if some of
> those entries are marked delete=true, though this has been fixed in
> Folsom).  If you feel confortable, take a look at the fixed_ips table to
> see if anything looks odd.  The dnsmasq conf files are generated
> directly from this table.
>
> Dan
>
>
> On Sun, Jul 22, 2012 at 1:45 PM, Wolfgang Hennerbichler
> <wolfgang.hennerbichler@xxxxxxxxxxxxxxxx
> <mailto:wolfgang.hennerbichler@xxxxxxxxxxxxxxxx>> wrote:
>
>     Hi openstack-guys,
>
>     using the latest essex release from ubuntu packages, I see a weird
>     nova-network behaviour (flat networking):
>
>     nova.conf:
>     --flat_interface=eth0
>     --flat_network_bridge=bridge_130
>     --flat_network_dhcp_start=192.168.32.130
>     --flat_injected=False
>
>     nova-network runs on a different host as nova-compute.
>     when I provision a VM, it all looks good (no errors in the logs),
>     but the VM doesn't get an IP address. I've tcpdumped and verfied
>     that the dhcp request reaches the correct interface of nova-network.
>     now looking into dnsmasq I found this in the syslog:
>
>     Jul 22 22:29:27 localhost dnsmasq-dhcp[3107]: read
>     /var/lib/nova/networks/nova-bridge_130.conf
>     Jul 22 22:29:50 localhost dnsmasq-dhcp[3107]:
>     DHCPDISCOVER(bridge_130) 192.168.122.96 fa:16:3e:60:92:a6 no address
>     available
>
>     bummer. so I checked to see why this happens, and it turns out, that
>     /var/lib/nova/networks/nova-bridge_130.conf is empty. I assume there
>     should be the mac to IP mapping, written by nova-network, but
>     although the file exists, it doesn't have content. nova-network
>     doesn't complain about any issues with this file, the file system
>     permissions allow the nova-user to write there, so I do not quite
>     know how to handle this.
>
>     Any hints would be very welcome.
>
>     Thanks a lot
>     wolfgang
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>
>
> --
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Dan Wendlandt
> Nicira, Inc: www.nicira.com <http://www.nicira.com>
> twitter: danwendlandt
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~


--
DI (FH) Wolfgang Hennerbichler
Software Development
Unit Advanced Computing Technologies
RISC Software GmbH
A company of the Johannes Kepler University Linz

IT-Center
Softwarepark 35
4232 Hagenberg
Austria

Phone: +43 7236 3343 245
Fax: +43 7236 3343 250
wolfgang.hennerbichler@xxxxxxxxxxxxxxxx
http://www.risc-software.at