QueuePool limit of size 10 overflow 20 reached, connection timed out, timeout 10

当批量删除虚拟机时报错如下

1、在计算节点的报错信息如下

[root@LX-OS-node12 ~]# tail -f /var/log/neutron/openvswitch-agent.log 

2014-09-02 19:28:27.252 36649 TRACE neutron.plugins.openvswitch.agent.ovs_neutron_agent   File "/usr/lib/python2.6/site-packages/neutron/agent/securitygroups_rpc.py", line 120, in prepare_devices_filter

2014-09-02 19:28:27.252 36649 TRACE neutron.plugins.openvswitch.agent.ovs_neutron_agent     self.context, list(device_ids))

2014-09-02 19:28:27.252 36649 TRACE neutron.plugins.openvswitch.agent.ovs_neutron_agent   File "/usr/lib/python2.6/site-packages/neutron/agent/securitygroups_rpc.py", line 58, in security_group_rules_for_devices

2014-09-02 19:28:27.252 36649 TRACE neutron.plugins.openvswitch.agent.ovs_neutron_agent     topic=self.topic)

2014-09-02 19:28:27.252 36649 TRACE neutron.plugins.openvswitch.agent.ovs_neutron_agent   File "/usr/lib/python2.6/site-packages/neutron/openstack/common/rpc/proxy.py", line 130, in call

2014-09-02 19:28:27.252 36649 TRACE neutron.plugins.openvswitch.agent.ovs_neutron_agent     exc.info, real_topic, msg.get('method'))

2014-09-02 19:28:27.252 36649 TRACE neutron.plugins.openvswitch.agent.ovs_neutron_agent Timeout: Timeout while waiting on RPC response - topic: "q-plugin", RPC method: "security_group_rules_for_devices" info: "<unknown>"

2014-09-02 19:28:27.252 36649 TRACE neutron.plugins.openvswitch.agent.ovs_neutron_agent 

2014-09-02 19:28:27.253 36649 INFO neutron.plugins.openvswitch.agent.ovs_neutron_agent [-] Agent out of sync with plugin!

2、在控制节点的报错信息如下

[root@LX-OS-node1 ~]# tail -f /var/log/neutron/server.log 

2014-09-02 19:32:12.123 3147 TRACE neutron.openstack.common.rpc.amqp   File "/usr/lib64/python2.6/site-packages/SQLAlchemy-0.7.8-py2.6-linux-x86_64.egg/sqlalchemy/engine/base.py", line 2490, in contextual_connect

2014-09-02 19:32:12.123 3147 TRACE neutron.openstack.common.rpc.amqp     self.pool.connect(),

2014-09-02 19:32:12.123 3147 TRACE neutron.openstack.common.rpc.amqp   File "/usr/lib64/python2.6/site-packages/SQLAlchemy-0.7.8-py2.6-linux-x86_64.egg/sqlalchemy/pool.py", line 224, in connect

2014-09-02 19:32:12.123 3147 TRACE neutron.openstack.common.rpc.amqp     return _ConnectionFairy(self).checkout()

2014-09-02 19:32:12.123 3147 TRACE neutron.openstack.common.rpc.amqp   File "/usr/lib64/python2.6/site-packages/SQLAlchemy-0.7.8-py2.6-linux-x86_64.egg/sqlalchemy/pool.py", line 387, in __init__

2014-09-02 19:32:12.123 3147 TRACE neutron.openstack.common.rpc.amqp     rec = self._connection_record = pool._do_get()

2014-09-02 19:32:12.123 3147 TRACE neutron.openstack.common.rpc.amqp   File "/usr/lib64/python2.6/site-packages/SQLAlchemy-0.7.8-py2.6-linux-x86_64.egg/sqlalchemy/pool.py", line 729, in _do_get

2014-09-02 19:32:12.123 3147 TRACE neutron.openstack.common.rpc.amqp     (self.size(), self.overflow(), self._timeout))

2014-09-02 19:32:12.123 3147 TRACE neutron.openstack.common.rpc.amqp TimeoutError: QueuePool limit of size 10 overflow 20 reached, connection timed out, timeout 10

2014-09-02 19:32:12.123 3147 TRACE neutron.openstack.common.rpc.amqp 

解决方法设置neutron配置文件中的如下参数

openstack-config --set /etc/neutron/neutron.conf DEFAULT api_workers  20

openstack-config --set /etc/neutron/neutron.conf database max_overflow 2000

openstack-config --set /etc/neutron/neutron.conf database max_pool_size 2000

openstack-config --set /etc/neutron/neutron.conf database retry_interval 2

设置nova的配置文件如下

openstack-config --set /etc/nova/nova.conf database max_pool_size 2000

openstack-config --set /etc/nova/nova.conf database max_retries 10

openstack-config --set /etc/nova/nova.conf database retry_interval 5

openstack-config --set /etc/nova/nova.conf database max_overflow 2000