Open Stack

A recent forum post on this topic: 
http://forums.openstack.org/viewtopic.php?f=16&t=562&p=2212#p2212 

You didn't specify the version, but I believe these steps would be valid 
for both Diablo and Essex.

First, on each compute node as described in the forum post, ensure that 
the --ec2_dmz_host flag in nova.conf is pointed to local machine and that 
nova-api is running in addition to nova-compute and nova-network. 

For the network not found error, depending on the docs followed,  it is 
likely you have an incorrect flag in nova.conf  (see 
https://bugs.launchpad.net/openstack-manuals/+bug/914829  ).  Ensure 
--multi_host=true is being used instead of --multi-host=true.  If the flag 
was incorrect, or changed after the network was created, a manual update 
to the MySQL database should correct it. 

# mysql -uroot -p -e "SELECT project_id, multi_host FROM networks;" nova

If the values are NOT:

+------------+------------+
| project_id | multi_host |
+------------+------------+
| NULL       |          1 |
+------------+------------+

run

# mysql -uroot -p -e "UPDATE networks SET multi_host = true, project_id = 
NULL;" nova

After running, restart nova-network on all the compute nodes and try 
again.

Hopefully this helps.

Michael

-------------------------------------------------
Michael Fork
Cloud Architect, Emerging Solutions
IBM Systems & Technology Group



From:   Linux Datacenter <linuxdatacenter at gmail.com>
To:     openstack-operators at lists.openstack.org
Date:   01/24/2012 03:54 AM
Subject:        [Openstack-operators] Network error - multihost networking
Sent by:        openstack-operators-bounces at lists.openstack.org



Hi,

I keep trying to set up multihost networking. My machines get ips from 
local dnsmasq running on the compute node. But then I have this error:

On the vm:
cloud-init start running: Tue, 24 Jan 2012 08:42:05 +0000. up 2.43 seconds
2012-01-24 08:42:05,616 - DataSourceEc2.py[WARNING]: '
http://169.254.169.254' failed: http error [500]
2012-01-24 08:42:06,654 - DataSourceEc2.py[WARNING]: '
http://169.254.169.254' failed: http error [500]
2012-01-24 08:42:07,695 - DataSourceEc2.py[WARNING]: '
http://169.254.169.254' failed: http error [500]
2012-01-24 08:42:08,734 - DataSourceEc2.py[WARNING]: '
http://169.254.169.254' failed: http error [500]
2012-01-24 08:42:09,775 - DataSourceEc2.py[WARNING]: '
http://169.254.169.254' failed: http error [500]

On nova-api.log:

(nova.rpc): TRACE: Traceback (most recent call last):
(nova.rpc): TRACE:   File 
"/usr/lib/python2.7/dist-packages/nova/rpc/impl_kombu.py", line 723, in 
_process_data
(nova.rpc): TRACE:     rval = node_func(context=ctxt, **node_args)
(nova.rpc): TRACE:   File 
"/usr/lib/python2.7/dist-packages/nova/network/manager.py", line 200, in 
wrapped
(nova.rpc): TRACE:     return func(self, context, *args, **kwargs)
(nova.rpc): TRACE:   File 
"/usr/lib/python2.7/dist-packages/nova/network/manager.py", line 727, in 
get_instance_uuids_by_ip_filter
(nova.rpc): TRACE:     network = self._get_network_by_id(context, 
vif['network_id'])
(nova.rpc): TRACE:   File 
"/usr/lib/python2.7/dist-packages/nova/network/manager.py", line 1591, in 
_get_network_by_id
(nova.rpc): TRACE:     network_id)
(nova.rpc): TRACE:   File 
"/usr/lib/python2.7/dist-packages/nova/network/manager.py", line 1455, in 
_get_network_by_id
(nova.rpc): TRACE:     return self.db.network_get(context, network_id)
(nova.rpc): TRACE:   File 
"/usr/lib/python2.7/dist-packages/nova/db/api.py", line 794, in 
network_get
(nova.rpc): TRACE:     return IMPL.network_get(context, network_id)
(nova.rpc): TRACE:   File 
"/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/api.py", line 116, in 
wrapper
(nova.rpc): TRACE:     return f(*args, **kwargs)
(nova.rpc): TRACE:   File 
"/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/api.py", line 1849, 
in network_get
(nova.rpc): TRACE:     raise 
exception.NetworkNotFound(network_id=network_id)
(nova.rpc): TRACE: NetworkNotFound: Network 1 could not be found.

select id from networks; - shows me that the id of my network is 1



-- 
checkout my blog on linux clusters:
-- linuxdatacenter.blogspot.com --
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