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Jun
5
通过修改nova 的源码，在nova client 和 nova server 支持 migrate 离线迁移指定目标主机。
（仅适用于RDO icehouse openstack-nova-2014.1.3-3 版本更新）
※ 注意：在2015-06-10 前提供的patch 有Bug，打入patch 后，执行resize 会报“NoValidHost: No valid host was found.”。原因是 compute/api.py 中 resize() 方法参数顺序的问题，下面的 patch 已经修改。
（仅适用于RDO icehouse openstack-nova-2014.1.3-3 版本更新）
※ 注意：在2015-06-10 前提供的patch 有Bug，打入patch 后，执行resize 会报“NoValidHost: No valid host was found.”。原因是 compute/api.py 中 resize() 方法参数顺序的问题，下面的 patch 已经修改。
May
7
在配置br-ex 桥接到eth0 网卡后，重启neutron-openvswitch-agent 服务后，一直提示报错，无法创建patch-int 和 patch-tun 网卡（极少时候是可以的）。
这导致openvswitch 在不断的重启，而对外的网络（与RabbitMQ 连接）也在不断的重启中。
日志：
这导致openvswitch 在不断的重启，而对外的网络（与RabbitMQ 连接）也在不断的重启中。
日志：
引用
2015-05-06 23:40:43.299 18254 ERROR neutron.agent.linux.ovs_lib [req-9ec5d95e-3626-4494-b043-35d5211747d8 None] Unable to execute ['ovs-vsctl', '--timeout=10', 'add-port', 'br-int', 'patch-tun', '--', 'set', 'Interface', 'patch-tun', 'type=patch', 'options:peer=patch-int']. Exception:
Command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ovs-vsctl', '--timeout=10', 'add-port', 'br-int', 'patch-tun', '--', 'set', 'Interface', 'patch-tun', 'type=patch', 'options:peer=patch-int']
Exit code: 242
Stdout: ''
Stderr: '2015-05-06T15:40:43Z|00002|fatal_signal|WARN|terminating with signal 14 (Alarm clock)\n'
2015-05-06 23:40:45.936 18254 ERROR oslo.messaging._drivers.impl_rabbit [-] AMQP server on 192.168.209.137:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 9 seconds.
2015-05-06 23:40:53.530 18254 ERROR neutron.agent.linux.utils [req-9ec5d95e-3626-4494-b043-35d5211747d8 None]
Command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ovs-vsctl', '--timeout=10', 'add-port', 'br-tun', 'patch-int', '--', 'set', 'Interface', 'patch-int', 'type=patch', 'options:peer=patch-tun']
Exit code: 242
Stdout: ''
Stderr: '2015-05-06T15:40:53Z|00002|fatal_signal|WARN|terminating with signal 14 (Alarm clock)\n'2015-05-06 23:40:53.530 18254 ERROR neutron.agent.linux.ovs_lib [req-9ec5d95e-3626-4494-b043-35d5211747d8 None] Unable to execute ['ovs-vsctl', '--timeout=10', 'add-port', 'br-tun', 'patch-int', '--', 'set', 'Interface', 'patch-int', 'type=patch', 'options:peer=patch-tun']. Exception:
Command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ovs-vsctl', '--timeout=10', 'add-port', 'br-tun', 'patch-int', '--', 'set', 'Interface', 'patch-int', 'type=patch', 'options:peer=patch-tun']
Exit code: 242
Stdout: ''
Stderr: '2015-05-06T15:40:53Z|00002|fatal_signal|WARN|terminating with signal 14 (Alarm clock)\n'
2015-05-06 23:40:53.638 18254 ERROR neutron.plugins.openvswitch.agent.ovs_neutron_agent [req-9ec5d95e-3626-4494-b043-35d5211747d8 None] Failed to create OVS patch port. Cannot have tunneling enabled on this agent, since this version of OVS does not support tunnels or patch ports. Agent terminated!2015-05-06 23:48:13.179 18701 INFO neutron.common.config [-] Logging enabled!
2015-05-06 23:48:13.728 18701 ERROR neutron.agent.linux.utils [-]
Command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ovs-vsctl', '--timeout=10', 'add-port', 'br-int', 'patch-tun', '--', 'set', 'Interface', 'patch-tun', 'type=patch', 'options:peer=patch-int']
Exit code: 242
Stdout: ''
Stderr: '2015-05-06T15:40:43Z|00002|fatal_signal|WARN|terminating with signal 14 (Alarm clock)\n'
2015-05-06 23:40:45.936 18254 ERROR oslo.messaging._drivers.impl_rabbit [-] AMQP server on 192.168.209.137:5672 is unreachable: [Errno 113] EHOSTUNREACH. Trying again in 9 seconds.
2015-05-06 23:40:53.530 18254 ERROR neutron.agent.linux.utils [req-9ec5d95e-3626-4494-b043-35d5211747d8 None]
Command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ovs-vsctl', '--timeout=10', 'add-port', 'br-tun', 'patch-int', '--', 'set', 'Interface', 'patch-int', 'type=patch', 'options:peer=patch-tun']
Exit code: 242
Stdout: ''
Stderr: '2015-05-06T15:40:53Z|00002|fatal_signal|WARN|terminating with signal 14 (Alarm clock)\n'2015-05-06 23:40:53.530 18254 ERROR neutron.agent.linux.ovs_lib [req-9ec5d95e-3626-4494-b043-35d5211747d8 None] Unable to execute ['ovs-vsctl', '--timeout=10', 'add-port', 'br-tun', 'patch-int', '--', 'set', 'Interface', 'patch-int', 'type=patch', 'options:peer=patch-tun']. Exception:
Command: ['sudo', 'neutron-rootwrap', '/etc/neutron/rootwrap.conf', 'ovs-vsctl', '--timeout=10', 'add-port', 'br-tun', 'patch-int', '--', 'set', 'Interface', 'patch-int', 'type=patch', 'options:peer=patch-tun']
Exit code: 242
Stdout: ''
Stderr: '2015-05-06T15:40:53Z|00002|fatal_signal|WARN|terminating with signal 14 (Alarm clock)\n'
2015-05-06 23:40:53.638 18254 ERROR neutron.plugins.openvswitch.agent.ovs_neutron_agent [req-9ec5d95e-3626-4494-b043-35d5211747d8 None] Failed to create OVS patch port. Cannot have tunneling enabled on this agent, since this version of OVS does not support tunnels or patch ports. Agent terminated!2015-05-06 23:48:13.179 18701 INFO neutron.common.config [-] Logging enabled!
2015-05-06 23:48:13.728 18701 ERROR neutron.agent.linux.utils [-]
Apr
16
执行 RDO juno openstack-packstack-dev1462 版本部署的时候，执行mongodb 部署失败，报如下的错误：
实际错误为访问mongo 服务无法连接：
引用
[root@controller01 ~]# packstack --answer-file=./packstack-answers-20150415-110139.txt
192.168.209.137_mongodb.pp: [ ERROR ]
Applying Puppet manifests [ ERROR ]
ERROR : Error appeared during Puppet run: 192.168.209.137_mongodb.pp
Error: Unable to connect to mongodb server! (192.168.209.137:27017)
You will find full trace in log /var/tmp/packstack/20150415-161743-hbPMV4/manifests/192.168.209.137_mongodb.pp.log
192.168.209.137_mongodb.pp: [ ERROR ]
Applying Puppet manifests [ ERROR ]
ERROR : Error appeared during Puppet run: 192.168.209.137_mongodb.pp
Error: Unable to connect to mongodb server! (192.168.209.137:27017)
You will find full trace in log /var/tmp/packstack/20150415-161743-hbPMV4/manifests/192.168.209.137_mongodb.pp.log
实际错误为访问mongo 服务无法连接：
引用
[root@controller01 ~]# cat /var/tmp/packstack/20150415-161743-hbPMV4/manifests/192.168.209.137_mongodb.pp.log
......
Notice: Failed to connect to mongodb within timeout window of 240 seconds; giving up.
Error: Unable to connect to mongodb server! (192.168.209.137:27017)
Error: /Stage[main]/Mongodb::Server::Service/Mongodb_conn_validator[mongodb]/ensure: change from absent to present failed: Unable to connect to mongodb server! (192.168.209.137:27017)
Notice: /Stage[main]/Mongodb::Server/Anchor[mongodb::server::end]: Dependency Mongodb_conn_validator[mongodb] has failures: true
Warning: /Stage[main]/Mongodb::Server/Anchor[mongodb::server::end]: Skipping because of failed dependencies
......
Notice: Failed to connect to mongodb within timeout window of 240 seconds; giving up.
Error: Unable to connect to mongodb server! (192.168.209.137:27017)
Error: /Stage[main]/Mongodb::Server::Service/Mongodb_conn_validator[mongodb]/ensure: change from absent to present failed: Unable to connect to mongodb server! (192.168.209.137:27017)
Notice: /Stage[main]/Mongodb::Server/Anchor[mongodb::server::end]: Dependency Mongodb_conn_validator[mongodb] has failures: true
Warning: /Stage[main]/Mongodb::Server/Anchor[mongodb::server::end]: Skipping because of failed dependencies
Feb
4
解决在节点和实例VM 较多的情况下，创建实例报错：
对应Neutron OpenvSwitch Agent 的错误：
经查询相关资料，在Juno 之前的版本，RPC 存在随节点增加，以指数方式增长的问题。
此外，还有使用iptables 完成security_group 设置需时较长的问题。
创建实例时，没创建一个Port，此时，因为系统中某个安全组有成员变化，所以需要通知到各个节点，传递这样一个信息：一些安全组中的成员有变化，如果你有对这些安全组的引用，请更新对应的iptables规则。对于linux bridge和ovs来说，需要由neutron l2 agent处理更新请求。
这两项结合起来，导致在宿主机节点和VM 较多的情况下，security_group 每个返回时间较长，port 创建rpc timeout：
最终Nova 在等待Neutron 创建Port 超时，就报Virtual Interface creation failed 错误。
引用
Virtual Interface creation failed
对应Neutron OpenvSwitch Agent 的错误：
引用
Timeout while waiting on RPC response
经查询相关资料，在Juno 之前的版本，RPC 存在随节点增加，以指数方式增长的问题。
此外，还有使用iptables 完成security_group 设置需时较长的问题。
创建实例时，没创建一个Port，此时，因为系统中某个安全组有成员变化，所以需要通知到各个节点，传递这样一个信息：一些安全组中的成员有变化，如果你有对这些安全组的引用，请更新对应的iptables规则。对于linux bridge和ovs来说，需要由neutron l2 agent处理更新请求。
这两项结合起来，导致在宿主机节点和VM 较多的情况下，security_group 每个返回时间较长，port 创建rpc timeout：
引用
Timeout: Timeout while waiting on RPC response - topic: "q-plugin", RPC method: "security_group_rules_for_devices" info: ""
最终Nova 在等待Neutron 创建Port 超时，就报Virtual Interface creation failed 错误。
Dec
24
以前写得一份关于Neutron VLAN 和GRE（VXLAN ）的PPT，基于OpenStack Havana 或 Icehouse 版本的。在Juno 版本中，Provider VLAN 没什么改变，但VXLAN 和GRE 通过L3 Gateway 是改变比较大的。
文档中内容是参考一些国外的资料和实践后整理的，仅供参考！
若有疑问，请发：emos#linuxfly.org 沟通。
文档中内容是参考一些国外的资料和实践后整理的，仅供参考！
下载文件若有疑问，请发：emos#linuxfly.org 沟通。
Feb
26
通过yum 更新使用RDO 安装OpenStack Havana 版本环境，发现实例无法获取metadata 信息，查看/var/log/neutron/metadata-agent.log 日志，发现如下报错信息：
引用
2014-02-25 17:48:52.486 4578 ERROR neutron.agent.metadata.agent [-] Unexpected error.
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent Traceback (most recent call last):
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent File "/usr/lib/python2.6/site-packages/neutron/agent/metadata/agent.py", line 94, in __call__
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent instance_id, tenant_id = self._get_instance_and_tenant_id(req)
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent File "/usr/lib/python2.6/site-packages/neutron/agent/metadata/agent.py", line 126, in _get_instance_and_tenant_id
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent self.auth_info = qclient.get_auth_info()
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent File "/usr/lib/python2.6/site-packages/neutronclient/v2_0/client.py", line 1114, in get_auth_info
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent return self.httpclient.get_auth_info()
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent File "/usr/lib/python2.6/site-packages/neutronclient/client.py", line 270, in get_auth_info
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent 'auth_tenant_id': self.auth_tenant_id,
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent AttributeError: 'HTTPClient' object has no attribute 'auth_tenant_id'
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent Traceback (most recent call last):
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent File "/usr/lib/python2.6/site-packages/neutron/agent/metadata/agent.py", line 94, in __call__
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent instance_id, tenant_id = self._get_instance_and_tenant_id(req)
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent File "/usr/lib/python2.6/site-packages/neutron/agent/metadata/agent.py", line 126, in _get_instance_and_tenant_id
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent self.auth_info = qclient.get_auth_info()
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent File "/usr/lib/python2.6/site-packages/neutronclient/v2_0/client.py", line 1114, in get_auth_info
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent return self.httpclient.get_auth_info()
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent File "/usr/lib/python2.6/site-packages/neutronclient/client.py", line 270, in get_auth_info
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent 'auth_tenant_id': self.auth_tenant_id,
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent AttributeError: 'HTTPClient' object has no attribute 'auth_tenant_id'
2014-02-25 17:48:52.486 4578 TRACE neutron.agent.metadata.agent
