Open Stack

Gary,

Is you Quantum DB empty after you have restarted devstack?, I normally
drop completely the Quantum DB and create it back again before running
devstack in a system when I have previously used Quantum.

Thanks,

Edgar

-----Original Message-----
From: openstack-bounces+eperdomo=cisco.com at lists.launchpad.net
[mailto:openstack-bounces+eperdomo=cisco.com at lists.launchpad.net] On
Behalf Of Gary Kotton
Sent: Monday, May 14, 2012 11:01 PM
To: openstack at lists.launchpad.net
Subject: [Openstack] [devstack/quantum] Configuration issue

Hi,
This morning I encountered a problem (which did not happen a few days 
ago :)). When devstack is launched, with quantum configured, the gateway

and bridge devices are created. This causes problems with quantum.

For example when devstack is up and running prior to deploying an 
instance we have:

brq744ec2f4-c0 Link encap:Ethernet  HWaddr fa:16:3e:03:a6:55
           inet addr:10.0.0.1  Bcast:0.0.0.0  Mask:255.255.255.0
           UP BROADCAST MULTICAST  MTU:1500  Metric:1
           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:0
           RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

gw-744ec2f4-c0 Link encap:Ethernet  HWaddr fa:16:3e:03:a6:55
           inet addr:10.0.0.1  Bcast:10.0.0.255  Mask:255.255.255.0
           UP BROADCAST MULTICAST  MTU:1500  Metric:1
           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
           TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:500
           RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)

When an instance is deployed the following happens:

2012-05-15 01:59:18 DEBUG nova.utils 
[req-4d50ed10-46e1-406c-9074-dc45da860365 
df07eec326434b25800f3ebc17202fb3 2cafe0be4d7740098a89be39ffd1b72e] 
Running cmd (subprocess): sudo /usr/local/bin/nova-rootwrap ip address 
add 10.0.0.1/24 dev brq744ec2f4-c0 from (pid=4234) execute 
/opt/stack/nova/nova/utils.py:178
2012-05-15 01:59:18 DEBUG nova.utils 
[req-4d50ed10-46e1-406c-9074-dc45da860365 
df07eec326434b25800f3ebc17202fb3 2cafe0be4d7740098a89be39ffd1b72e] 
Result was 254 from (pid=4234) execute /opt/stack/nova/nova/utils.py:194
2012-05-15 01:59:18 ERROR nova.rpc.amqp 
[req-4d50ed10-46e1-406c-9074-dc45da860365 
df07eec326434b25800f3ebc17202fb3 2cafe0be4d7740098a89be39ffd1b72e] 
Exception during message handling
2012-05-15 01:59:18 TRACE nova.rpc.amqp Traceback (most recent call
last):
2012-05-15 01:59:18 TRACE nova.rpc.amqp   File 
"/opt/stack/nova/nova/rpc/amqp.py", line 263, in _process_data
2012-05-15 01:59:18 TRACE nova.rpc.amqp     rval = 
node_func(context=ctxt, **node_args)
2012-05-15 01:59:18 TRACE nova.rpc.amqp   File 
"/opt/stack/nova/nova/network/quantum/manager.py", line 390, in 
allocate_for_instance
2012-05-15 01:59:18 TRACE nova.rpc.amqp     network, vif_rec, 
network['net_tenant_id'])
2012-05-15 01:59:18 TRACE nova.rpc.amqp   File 
"/opt/stack/nova/nova/utils.py", line 880, in inner
2012-05-15 01:59:18 TRACE nova.rpc.amqp     retval = f(*args, **kwargs)
2012-05-15 01:59:18 TRACE nova.rpc.amqp   File 
"/opt/stack/nova/nova/network/quantum/manager.py", line 501, in
enable_dhcp
2012-05-15 01:59:18 TRACE nova.rpc.amqp     
self.l3driver.initialize_gateway(network_ref)
2012-05-15 01:59:18 TRACE nova.rpc.amqp   File 
"/opt/stack/nova/nova/network/l3.py", line 98, in initialize_gateway
2012-05-15 01:59:18 TRACE nova.rpc.amqp     
gateway=(network_ref['gateway'] is not None))
2012-05-15 01:59:18 TRACE nova.rpc.amqp   File 
"/opt/stack/nova/nova/network/linux_net.py", line 900, in plug
2012-05-15 01:59:18 TRACE nova.rpc.amqp     return 
_get_interface_driver().plug(network, mac_address, gateway)
2012-05-15 01:59:18 TRACE nova.rpc.amqp   File 
"/opt/stack/nova/nova/network/linux_net.py", line 1160, in plug
2012-05-15 01:59:18 TRACE nova.rpc.amqp     run_as_root=True)
2012-05-15 01:59:18 TRACE nova.rpc.amqp   File 
"/opt/stack/nova/nova/utils.py", line 201, in execute
2012-05-15 01:59:18 TRACE nova.rpc.amqp     cmd=' '.join(cmd))
2012-05-15 01:59:18 TRACE nova.rpc.amqp ProcessExecutionError: 
Unexpected error while running command.
2012-05-15 01:59:18 TRACE nova.rpc.amqp Command: sudo 
/usr/local/bin/nova-rootwrap ip address add 10.0.0.1/24 dev
brq744ec2f4-c0
2012-05-15 01:59:18 TRACE nova.rpc.amqp Exit code: 254
2012-05-15 01:59:18 TRACE nova.rpc.amqp Stdout: ''
2012-05-15 01:59:18 TRACE nova.rpc.amqp Stderr: 'RTNETLINK answers: File

exists\n'
2012-05-15 01:59:18 TRACE nova.rpc.amqp
2012-05-15 01:59:18 ERROR nova.rpc.common 
[req-4d50ed10-46e1-406c-9074-dc45da860365 
df07eec326434b25800f3ebc17202fb3 2cafe0be4d7740098a89be39ffd1b72e] 
Returning exception Unexpected error while running command.
Command: sudo /usr/local/bin/nova-rootwrap ip address add 10.0.0.1/24 
dev brq744ec2f4-c0
Exit code: 254
Stdout: ''
Stderr: 'RTNETLINK answers: File exists\n' to caller
2012-05-15 01:59:18 ERROR nova.rpc.common 
[req-4d50ed10-46e1-406c-9074-dc45da860365 
df07eec326434b25800f3ebc17202fb3 2cafe0be4d7740098a89be39ffd1b72e] 
['Traceback (most recent call last):\n', '  File 
"/opt/stack/nova/nova/rpc/amqp.py", line 263, in _process_data\n    rval

= node_func(context=ctxt, **node_args)\n', '  File 
"/opt/stack/nova/nova/network/quantum/manager.py", line 390, in 
allocate_for_instance\n    network, vif_rec, 
network[\'net_tenant_id\'])\n', '  File "/opt/stack/nova/nova/utils.py",

line 880, in inner\n    retval = f(*args, **kwargs)\n', '  File 
"/opt/stack/nova/nova/network/quantum/manager.py", line 501, in 
enable_dhcp\n    self.l3driver.initialize_gateway(network_ref)\n', '  
File "/opt/stack/nova/nova/network/l3.py", line 98, in 
initialize_gateway\n    gateway=(network_ref[\'gateway\'] is not 
None))\n', '  File "/opt/stack/nova/nova/network/linux_net.py", line 
900, in plug\n    return _get_interface_driver().plug(network, 
mac_address, gateway)\n', '  File 
"/opt/stack/nova/nova/network/linux_net.py", line 1160, in plug\n    
run_as_root=True)\n', '  File "/opt/stack/nova/nova/utils.py", line 201,

in execute\n    cmd=\' \'.join(cmd))\n', "ProcessExecutionError: 
Unexpected error while running command.\nCommand: sudo 
/usr/local/bin/nova-rootwrap ip address add 10.0.0.1/24 dev 
brq744ec2f4-c0\nExit code: 254\nStdout: ''\nStderr: 'RTNETLINK answers: 
File exists\\n'\n"]


My guess is that this can be solved with the nova configuration. Sadly I

am not too familiar with these. Any help would be great.
Thanks
Gary

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