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Getting error in /var/log/quantum/agent-dhcp.log

asked 2012-09-13 08:45:47 -0500

Hi, I'm using Folsom Testing Packages on Ubuntu 12.04., Quantum V2 with OVS Plugin & Agent running. I created a network with subnet I wanted to create an instance with the created network. I am trying to create that instance in the same Controller Node.

The following services are up and running. 1.quantum-server 2.quantum-plugin-openvswitch-agent 3.quantum-dhcp-agent 4.nova-api 5.nova-compute 6.nova-cert 7.nova-consoleauth 8.nova-scheduler 9.novnc

The thing is, I am able to create an instance and running. I am not able to get an IP from the assigned subnet. When I check the processes running, I am not able to see any 'dnsmasq' with the mentioned subnet. When I check the logs of Quantum DHCP Agent in '/var/log/quantum/agent-dhcp.log', I found the following errors which are getting for every 30 secs:

2012-09-13 14:14:39 INFO [quantum.openstack.common.rpc.common] Reconnecting to AMQP server on localhost:5672 2012-09-13 14:14:39 DEBUG [amqplib] Start from server, version: 8.0, properties: {u'information': u'Licensed under the MPL. See' , u'product': u'RabbitMQ', u'copyright': u'Copyright (C) 2007-2011 VMware, Inc.', u'capabilities': {}, u'platform': u'Erlang/OTP', u'version': u'2.7.1'}, mechanisms: [u'PLAIN', u'AMQPLAIN'], locales: [u'en_US'] 2012-09-13 14:14:42 ERROR [quantum.openstack.common.rpc.common] AMQP server on localhost:5672 is unreachable: Socket closed. Trying again in 30 seconds. Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/", line 469, in reconnect self._connect() File "/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/", line 446, in _connect self.connection.connect() File "/usr/lib/python2.7/dist-packages/kombu/", line 154, in connect return self.connection File "/usr/lib/python2.7/dist-packages/kombu/", line 560, in connection self._connection = self._establish_connection() File "/usr/lib/python2.7/dist-packages/kombu/", line 521, in _establish_connection conn = self.transport.establish_connection() File "/usr/lib/python2.7/dist-packages/kombu/transport/", line 255, in establish_connection connect_timeout=conninfo.connect_timeout) File "/usr/lib/python2.7/dist-packages/kombu/transport/", line 52, in __init__ super(Connection, self).__init__( args, *kwargs) File "/usr/lib/python2.7/dist-packages/amqplib/client_0_8/", line 144, in __init__ (10, 30), # tune File "/usr/lib/python2.7/dist-packages/amqplib/client_0_8/", line 95, in wait self.channel_id, allowed_methods) File "/usr/lib/python2.7/dist-packages/amqplib/client_0_8/", line 202, in _wait_method self.method_reader.read_method() File "/usr/lib/python2.7/dist-packages/amqplib/client_0_8/", line 221, in read_method raise m IOError: Socket closed

Please help to fix this.

Regards, Srikanth.

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14 answers

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answered 2012-09-18 09:10:17 -0500

jing gravatar image

hi Srikanth i have the same problem, the problem is about the configuration “/etc/init/quantum-dhcp-agent.conf” cat /etc/init/quantum-dhcp-agent.conf description "Quantum l3 agent" author "Chuck Short"

start on runlevel [2345] stop on runlevel [016]

chdir /var/run

pre-start script mkdir -p /var/run/quantum chown quantum:root /var/run/quantum end script

#####################here###################### exec start-stop-daemon --start --chuid quantum --exec /usr/bin/quantum-dhcp-agent -- \ --config-file=/etc/quantum/quantum.conf \ --config-file=/etc/quantum/dhcp_agent.ini \ --log-file=/var/log/quantum/dhcp-agent.log

i hope this could help you!!!

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answered 2012-09-18 10:16:55 -0500

Hi Lawrance, Thanks. That fixed my issue. That error disappears from the DHCP Agent logs. Now, I can be able to see 2 dnsmasqs running with the given subnet range in Controller Node. I created a VM Instance, which is up and running. But, I am not able to get IP for that VM Instance. Do I need to do anything to get IP for the VM Instance?

Regards, Srikanth.

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answered 2012-09-19 03:11:05 -0500

danwent gravatar image

Yes, I"m confused as to the config file change as well... can you provide more details?

What was the value of libvirt_vif_driver that you were using? The issue with the DHCP packets not getting through could be an issue with nova security groups getting an incorrect view of the dhcp server for the subnet. In some recent testing I saw a subnet get two different ports with owner 'quantum:dhcp', which would confuse the security group logic.

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answered 2012-09-20 06:35:06 -0500

@adam: I got the following error in /var/log/quantum/agent-dhcp.log:

2012-09-17 13:54:17 INFO [quantum.agent.dhcp_agent] Synchronizing state 2012-09-17 13:54:17 DEBUG [quantum.openstack.common.rpc.amqp] Making asynchronous call on q-plugin ... 2012-09-17 13:54:17 DEBUG [quantum.openstack.common.rpc.amqp] MSG_ID is 2e7704be7914452b8b89d569e4e76f5d 2012-09-17 13:55:17 ERROR [quantum.openstack.common.rpc.common] Timed out waiting for RPC response: timed out Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/", line 513, in ensure return method(args, kwargs) File "/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/", line 590, in _consume return self.connection.drain_events(timeout=timeout) File "/usr/lib/python2.7/dist-packages/kombu/", line 175, in drain_events return self.transport.drain_events(self.connection, *kwargs) File "/usr/lib/python2.7/dist-packages/kombu/transport/", line 238, in drain_events return connection.drain_events(kwargs) File "/usr/lib/python2.7/dist-packages/kombu/transport/", line 57, in drain_events return self.wait_multi(self.channels.values(), timeout=timeout) File "/usr/lib/python2.7/dist-packages/kombu/transport/", line 63, in wait_multi chanmap.keys(), allowed_methods, timeout=timeout) File "/usr/lib/python2.7/dist-packages/kombu/transport/", line 120, in _wait_multiple channel, method_sig, args, content = read_timeout(timeout) File "/usr/lib/python2.7/dist-packages/kombu/transport/", line 94, in read_timeout return self.method_reader.read_method() File "/usr/lib/python2.7/dist-packages/amqplib/client_0_8/", line 221, in read_method raise m timeout: timed out 2012-09-17 13:55:17 DEBUG [amqplib] Closed channel #1 2012-09-17 13:55:17 DEBUG [amqplib] using channel_id: 1 2012-09-17 13:55:17 DEBUG [amqplib] Channel open 2012-09-17 13:55:17 ERROR [quantum.agent.dhcp_agent] Unable to sync network state. Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/quantum/agent/", line 112, in sync_state active_networks = set(self.plugin_rpc.get_active_networks()) File "/usr/lib/python2.7/dist-packages/quantum/agent/", line 260, in get_active_networks topic=self.topic) File "/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/", line 80, in call return, self._get_topic(topic), msg, timeout) File "/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/", line 102, in call return _get_impl().call(cfg.CONF, context, topic, msg, timeout) File "/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/", line 712, in call rpc_amqp.get_connection_pool(conf, Connection)) File "/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/", line 368, in call rv = list(rv) File "/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/", line 329, in __iter__ self.done() File "/usr/lib/python2.7/", line 24, in __exit__ File "/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/", line 326, in __iter__ File "/usr/lib/python2.7/dist-packages/quantum/openstack/common/rpc/", line 595, in iterconsume yield self.ensure(_error_callback, _consume) File "/usr/lib/python2.7/dist-packages/quantum/openstack ... (more)

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Asked: 2012-09-13 08:45:47 -0500

Seen: 141 times

Last updated: Sep 20 '12