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[Jonathan Proulx <jon@xxxxxxxxxxxxx>]

Hi All,

my stack stopped launching instances last night & I've been chasing my
tail for a while but I think it think's it's out of fixed IPs.

the system is Essex as packages on Ubuntu 12.04 using FlatDHCP, with
multihost and a fixed range or 10.0.0.0/16

--multi_host=True
--public_interface=eth0
--fixed_range=10.0.0.0/16
--flat_interface=eth1
--flat_network_bridge=br100
--network_manager=nova.network.manager.FlatDHCPManager

the error I'm seeing for all attempts at launching is:

2012-09-06 10:16:43 TRACE nova.compute.manager [instance:
d5aa2d4b-76db-43b7-a655-24edeb7fc495]   File
"/usr/lib/python2.7/dist-packages/nova/virt/libvirt/vif.py", line 69,
in _get_configurations
2012-09-06 10:16:43 TRACE nova.compute.manager [instance:
d5aa2d4b-76db-43b7-a655-24edeb7fc495]     'ip_address':
mapping['ips'][0]['ip'],
2012-09-06 10:16:43 TRACE nova.compute.manager [instance:
d5aa2d4b-76db-43b7-a655-24edeb7fc495] IndexError: list index out of
range

and I just noticed that the flat network interfaces are getting /24
netmasks NOT  /16 this combined with 210 running instances and forty
some compute nodes make me think it's out of addresses.

is my syntax for the fixed range wrong, doc give 10.0.0.0/8 as the
example and default so I don't think so.  I'm fine with reverting to
that, don't mind more addresses, but I would like to understand if
this is actually my problem and even if it's not why it's not giving
the mask I asked for.

-Jon