创建nova实例 nova-compute报错：`libvirtError: internal error: process exited while connecting to monitor`-Toy模板网

这篇具有很好参考价值的文章主要介绍了创建nova实例 nova-compute报错：`libvirtError: internal error: process exited while connecting to monitor`。希望对大家有所帮助。如果存在错误或未考虑完全的地方，请大家不吝赐教，您也可以点击"举报违法"按钮提交疑问。

创建nova实例 nova-compute报错：libvirtError: internal error: process exited while connecting to monitor

在vmware嵌套的虚拟化环境中，部署多节点，对接多套后端ceph存储的时候，发现创建nova实例总是error：

根据卷类型和镜像创建卷

cinder create --image-id 2bc3e25e-d6fc-4b61-96c9-d24075ec05fd --name test-bus-22 --volume-type ceph-bus 10

启动一个nova实例

nova boot --flavor 1C1G --boot-volume 4602fd51-ceba-4e11-9bf7-07ab59fbc4cb  --availability-zone business --nic net-id=ef6e073d-be57-48d0-8a6d-c0aeb566f3c3 --nic net-id=56f13591-b4ba-4cd8-8ec6-1cebad6438dc bus-test122

2023-02-23 18:10:36.579 7 INFO os_vif [req-8a7516dd-217b-4e09-abd6-94261ae08d0d 905596397631479db0e5d5cfa3ceec90 7b651f4b9ecc4cd3bd400a2084084cb9 - default default] Successfully unplugged vif VIFBridge(active=False,address=fa:16:3e:6b:50:28,bridge_name='qbr78f1d0e3-6d',has_traffic_filtering=True,id=78f1d0e3-6d65-4bbb-ae90-1ab8654e521c,network=Network(56f13591-b4ba-4cd8-8ec6-1cebad6438dc),plugin='ovs',port_profile=VIFPortProfileOpenVSwitch,preserve_on_delete=False,vif_name='tap78f1d0e3-6d')
:
ting to monitor: 2023-02-23T10:10:26.924633Z qemu-kvm: -chardev pty,id=charserial0,logfile=/var/lib/nova/instances/b3a6bd51-4d91-42b7-a698-119fbda9c11c/console.log,logappend=off: Unable to open logfile /var/lib/nova/instances/b3a6bd51-4d91-42b7-a698-119fbda9c11c/console.log: Permission denied
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c] Traceback (most recent call last):
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/compute/manager.py", line 2357, in _build_resources
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     yield resources
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/compute/manager.py", line 2121, in _build_and_run_instance
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     block_device_info=block_device_info)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3080, in spawn
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     destroy_disks_on_failure=True)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5647, in _create_domain_and_network
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     destroy_disks_on_failure)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     self.force_reraise()
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     six.reraise(self.type_, self.value, self.tb)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5616, in _create_domain_and_network
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     post_xml_callback=post_xml_callback)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5550, in _create_domain
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     guest.launch(pause=pause)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 144, in launch
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     self._encoded_xml, errors='ignore')
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     self.force_reraise()
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     six.reraise(self.type_, self.value, self.tb)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 139, in launch
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     return self._domain.createWithFlags(flags)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 186, in doit
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     result = proxy_call(self._autowrap, f, *args, **kwargs)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 144, in proxy_call
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     rv = execute(f, *args, **kwargs)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 125, in execute
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     six.reraise(c, e, tb)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 83, in tworker
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     rv = meth(*args, **kwargs)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1099, in createWithFlags
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c] libvirtError: internal error: process exited while connecting to monitor: :
ting to monitor: 2023-02-23T10:10:26.924633Z qemu-kvm: -chardev pty,id=charserial0,logfile=/var/lib/nova/instances/b3a6bd51-4d91-42b7-a698-119fbda9c11c/console.log,logappend=off: Unable to open logfile /var/lib/nova/instances/b3a6bd51-4d91-42b7-a698-119fbda9c11c/console.log: Permission denied
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c] Traceback (most recent call last):
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/compute/manager.py", line 2357, in _build_resources
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     yield resources
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/compute/manager.py", line 2121, in _build_and_run_instance
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     block_device_info=block_device_info)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3080, in spawn
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     destroy_disks_on_failure=True)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5647, in _create_domain_and_network
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     destroy_disks_on_failure)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     self.force_reraise()
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     six.reraise(self.type_, self.value, self.tb)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5616, in _create_domain_and_network
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     post_xml_callback=post_xml_callback)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5550, in _create_domain
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     guest.launch(pause=pause)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 144, in launch
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     self._encoded_xml, errors='ignore')
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     self.force_reraise()
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     six.reraise(self.type_, self.value, self.tb)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 139, in launch
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     return self._domain.createWithFlags(flags)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 186, in doit
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     result = proxy_call(self._autowrap, f, *args, **kwargs)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 144, in proxy_call
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     rv = execute(f, *args, **kwargs)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 125, in execute
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     six.reraise(c, e, tb)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 83, in tworker
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     rv = meth(*args, **kwargs)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1099, in createWithFlags
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]     if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self)
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c] libvirtError: internal error: process exited while connecting to monitor: 2023-02-23T10:10:26.924633Z qemu-kvm: -chardev pty,id=charserial0,logfile=/var/lib/nova/instances/b3a6bd51-4d91-42b7-a698-119fbda9c11c/console.log,logappend=off: Unable to open logfile /var/lib/nova/instances/b3a6bd51-4d91-42b7-a698-119fbda9c11c/console.log: Permission denied
2023-02-23 18:10:35.151 7 ERROR nova.compute.manager [instance: b3a6bd51-4d91-42b7-a698-119fbda9c11c]

在qemu.conf配置文件中修改了user 和group后导致上面的报错，一开始写xml报错，还真以为是权限的问题，都改为root，重启了nova_libvirt容器问题依旧。后来又将user和group改回到nova

stdio_handler = "file"
user = "nova"
group = "nova"

nova-compute报错：libvirtError: internal error: process exited while connecting to monitor

2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [req-ea83bece-2dfc-4ad4-a79b-c9eff763f4ef 905596397631479db0e5d5cfa3ceec90 7b651f4b9ecc4cd3bd400a2084084cb9 - default default] [instance: df810251-9c80-4dbf-8255-bac437a012cc] Instance failed to spawn: libvirtError: internal error: process exited while connecting to monitor: 2023-02-23T08:10:10.312021Z qemu-kvm: -chardev pty,id=charserial0,logfile=/var/lib/nova/instances/df810251-9c80-4dbf-8255-bac437a012cc/console.log,logappend=off: Failed to create PTY: No such file or directory
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc] Traceback (most recent call last):
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/compute/manager.py", line 2357, in _build_resources
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     yield resources
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/compute/manager.py", line 2121, in _build_and_run_instance
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     block_device_info=block_device_info)
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3080, in spawn
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     destroy_disks_on_failure=True)
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5646, in _create_domain_and_network
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     destroy_disks_on_failure)
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     self.force_reraise()
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     six.reraise(self.type_, self.value, self.tb)
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5615, in _create_domain_and_network
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     post_xml_callback=post_xml_callback)
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5550, in _create_domain
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     guest.launch(pause=pause)
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 144, in launch
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     self._encoded_xml, errors='ignore')
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     self.force_reraise()
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     six.reraise(self.type_, self.value, self.tb)
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/guest.py", line 139, in launch
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     return self._domain.createWithFlags(flags)
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 186, in doit
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     result = proxy_call(self._autowrap, f, *args, **kwargs)
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 144, in proxy_call
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     rv = execute(f, *args, **kwargs)
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 125, in execute
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     six.reraise(c, e, tb)
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/var/lib/kolla/venv/lib/python2.7/site-packages/eventlet/tpool.py", line 83, in tworker
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     rv = meth(*args, **kwargs)
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]   File "/usr/lib64/python2.7/site-packages/libvirt.py", line 1099, in createWithFlags
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc]     if ret == -1: raise libvirtError ('virDomainCreateWithFlags() failed', dom=self)
2023-02-23 16:10:18.520 7 ERROR nova.compute.manager [instance: df810251-9c80-4dbf-8255-bac437a012cc] libvirtError: internal error: process exited while connecting to monitor: 2023-02-23T08:10:10.312021Z qemu-kvm: -chardev pty,id=charserial0,logfile=/var/lib/nova/instances/df810251-9c80-4dbf-8255-bac437a012cc/console.log,logappend=off: Failed to create PTY: No such file or directory

经过pdb调试代码，发现跟踪到了libvirt驱动去创建xml的报错
代码位置：/var/lib/kolla/venv/lib/python2.7/site-packages/nova/virt/libvirt/drivert.py

    def _create_domain(self, xml=None, domain=None,
                       power_on=True, pause=False, post_xml_callback=None):
        """Create a domain.

        Either domain or xml must be passed in. If both are passed, then
        the domain definition is overwritten from the xml.

        :returns guest.Guest: Guest just created
        """
        if xml:
            guest = libvirt_guest.Guest.create(xml, self._host)
            if post_xml_callback is not None:
                post_xml_callback()
        else:
            guest = libvirt_guest.Guest(domain)

        if power_on or pause:
            guest.launch(pause=pause)

        if not utils.is_neutron():
            guest.enable_hairpin()

        return guest

最终在guest.launch的时候报Libvirt Error
解决：
在qemu.conf配置文件中添加namespaces = []后，重启libvirt服务正常工作。

stdio_handler = "file"
namespaces = []
user = "nova"
group = "nova"

查到是一个bug导致，至于详细原因没有仔细继续往下追究，参考如下链接：
https://bugzilla.redhat.com/show_bug.cgi?id=1427804文章来源地址https://www.toymoban.com/news/detail-762682.html

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