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luanch instance faile

hi all there is an error when i luanch an instance,the following is the compute_node log:

2020-04-09 05:35:54.216 3561 INFO nova.virt.libvirt.driver [req-5bef2afe-1ffd-47e2-96c5-0a53b3035f8c a409cd9547a04cbf8c0fb65e812a9645 11ffde9fd4ca44c6b915f7d9a0f6eee2 - default default] [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Creating image 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [req-5bef2afe-1ffd-47e2-96c5-0a53b3035f8c a409cd9547a04cbf8c0fb65e812a9645 11ffde9fd4ca44c6b915f7d9a0f6eee2 - default default] [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Instance failed to spawn: OSError: [Errno 2] No such file or directory 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Traceback (most recent call last): 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2486, in _build_resources 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] yield resources 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2248, in _build_and_run_instance 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] block_device_info=block_device_info) 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3137, in spawn 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] mdevs=mdevs) 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5484, in _get_guest_xml 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] context, mdevs) 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5270, in _get_guest_config 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] flavor, guest.os_type) 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 4052, in _get_guest_storage_config 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] inst_type) 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3963, in _get_guest_disk_config 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] disk_unit=disk_unit) 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/imagebackend.py", line 883, in libvirt_info 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] hosts, ports = self.driver.get_mon_addrs() 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/storage/rbd_utils.py", line 166, in get_mon_addrs 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] out, _ = processutils.execute(args) 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/oslo_concurrency/processutils.py", line 391, in execute 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] env=env_variables) 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/eventlet/green/subprocess.py", line 55, in __init__ 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] subprocess_orig.Popen.__init__(self, args, 0, *argss, *kwds) 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib64/python2.7/subprocess.py", line 711, in __init__ 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] errread, errwrite) 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib64/python2.7/subprocess.py", line 1327, in _execute_child 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] raise child_exception 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] OSError: [Errno 2] No such file or directory 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] 2020-04-09 05:35:57.329 3561 INFO nova.compute.manager [req-5bef2afe-1ffd-47e2-96c5-0a53b3035f8c a409cd9547a04cbf8c0fb65e812a9645 11ffde9fd4ca44c6b915f7d9a0f6eee2 - default default] [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Terminating instance 2020-04-09 05:35:57.349 3561 INFO nova.virt.libvirt.driver [-] [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Instance destroyed successfully. 2020-04-09 05:35:57.352 3561 INFO os_vif [req-5bef2afe-1ffd-47e2-96c5-0a53b3035f8c a409cd9547a04cbf8c0fb65e812a9645 11ffde9fd4ca44c6b915f7d9a0f6eee2 - default default] Successfully unplugged vif VIFBridge(active=False,address=fa:16:3e:9c:90:e1,bridge_name='brq400c4004-37',has_traffic_filtering=True,id=9a67e622-1600-4d18-a802-20ef297e032f,network=Network(400c4004-373e-4f17-ba92-fd30838f48d6),plugin='linux_bridge',port_profile=,preserve_on_delete=False,vif_name='tap9a67e622-16') 2020-04-09 05:35:57.558 3561 INFO nova.virt.libvirt.driver [req-5bef2afe-1ffd-47e2-96c5-0a53b3035f8c a409cd9547a04cbf8c0fb65e812a9645 11ffde9fd4ca44c6b915f7d9a0f6eee2 - default default] [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Deleting instance files /var/lib/nova/instances/6d927be5-aedb-48aa-ab11-1400051e54f9_del 2020-04-09 05:35:57.559 3561 INFO nova.virt.libvirt.driver [req-5bef2afe-1ffd-47e2-96c5-0a53b3035f8c a409cd9547a04cbf8c0fb65e812a9645 11ffde9fd4ca44c6b915f7d9a0f6eee2 - default default] [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Deletion of /var/lib/nova/instances/6d927be5-aedb-48aa-ab11-1400051e54f9_del complete 2020-04-09 05:35:57.741 3561 INFO nova.compute.manager [req-5bef2afe-1ffd-47e2-96c5-0a53b3035f8c a409cd9547a04cbf8c0fb65e812a9645 11ffde9fd4ca44c6b915f7d9a0f6eee2 - default default] [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Took 0.40 seconds to destroy the instance on the hypervisor. 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [req-5bef2afe-1ffd-47e2-96c5-0a53b3035f8c a409cd9547a04cbf8c0fb65e812a9645 11ffde9fd4ca44c6b915f7d9a0f6eee2 - default default] [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Failed to build and run instance: OSError: [Errno 2] No such file or directory 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Traceback (most recent call last): 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2248, in _build_and_run_instance 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] block_device_info=block_device_info) 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3137, in spawn 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] mdevs=mdevs) 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5484, in _get_guest_xml 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] context, mdevs) 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5270, in _get_guest_config 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] flavor, guest.os_type) 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 4052, in _get_guest_storage_config 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] inst_type) 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3963, in _get_guest_disk_config 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] disk_unit=disk_unit) 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/imagebackend.py", line 883, in libvirt_info 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] hosts, ports = self.driver.get_mon_addrs() 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/storage/rbd_utils.py", line 166, in get_mon_addrs 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] out, _ = processutils.execute(args) 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/oslo_concurrency/processutils.py", line 391, in execute 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] env=env_variables) 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib/python2.7/site-packages/eventlet/green/subprocess.py", line 55, in __init__ 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] subprocess_orig.Popen.__init__(self, args, 0, *argss, *kwds) 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib64/python2.7/subprocess.py", line 711, in __init__ 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] errread, errwrite) 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] File "/usr/lib64/python2.7/subprocess.py", line 1327, in _execute_child 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] raise child_exception 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] OSError: [Errno 2] No such file or directory 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]

could anyone give some suggest!,thanks!

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luanch instance faile

hi all there is an error when i luanch an instance,the following is the compute_node log:

2020-04-09 05:35:54.216 3561 INFO nova.virt.libvirt.driver [req-5bef2afe-1ffd-47e2-96c5-0a53b3035f8c a409cd9547a04cbf8c0fb65e812a9645 11ffde9fd4ca44c6b915f7d9a0f6eee2 - default default] [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Creating image
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [req-5bef2afe-1ffd-47e2-96c5-0a53b3035f8c a409cd9547a04cbf8c0fb65e812a9645 11ffde9fd4ca44c6b915f7d9a0f6eee2 - default default] [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Instance failed to spawn: OSError: [Errno 2] No such file or directory
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Traceback (most recent call last):
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2486, in _build_resources
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     yield resources
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2248, in _build_and_run_instance
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     block_device_info=block_device_info)
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3137, in spawn
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     mdevs=mdevs)
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5484, in _get_guest_xml
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     context, mdevs)
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5270, in _get_guest_config
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     flavor, guest.os_type)
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 4052, in _get_guest_storage_config
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     inst_type)
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3963, in _get_guest_disk_config
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     disk_unit=disk_unit)
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/imagebackend.py", line 883, in libvirt_info
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     hosts, ports = self.driver.get_mon_addrs()
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/storage/rbd_utils.py", line 166, in get_mon_addrs
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     out, _ = processutils.execute(args)
  processutils.execute(*args)
2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/oslo_concurrency/processutils.py", line 391, in execute
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     env=env_variables)
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/eventlet/green/subprocess.py", line 55, in __init__
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     subprocess_orig.Popen.__init__(self, args, 0, *argss, *kwds)
  **kwds)
2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib64/python2.7/subprocess.py", line 711, in __init__
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     errread, errwrite)
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib64/python2.7/subprocess.py", line 1327, in _execute_child
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     raise child_exception
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] OSError: [Errno 2] No such file or directory
 2020-04-09 05:35:57.326 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] 
 2020-04-09 05:35:57.329 3561 INFO nova.compute.manager [req-5bef2afe-1ffd-47e2-96c5-0a53b3035f8c a409cd9547a04cbf8c0fb65e812a9645 11ffde9fd4ca44c6b915f7d9a0f6eee2 - default default] [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Terminating instance
 2020-04-09 05:35:57.349 3561 INFO nova.virt.libvirt.driver [-] [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Instance destroyed successfully.
 2020-04-09 05:35:57.352 3561 INFO os_vif [req-5bef2afe-1ffd-47e2-96c5-0a53b3035f8c a409cd9547a04cbf8c0fb65e812a9645 11ffde9fd4ca44c6b915f7d9a0f6eee2 - default default] Successfully unplugged vif VIFBridge(active=False,address=fa:16:3e:9c:90:e1,bridge_name='brq400c4004-37',has_traffic_filtering=True,id=9a67e622-1600-4d18-a802-20ef297e032f,network=Network(400c4004-373e-4f17-ba92-fd30838f48d6),plugin='linux_bridge',port_profile=,preserve_on_delete=False,vif_name='tap9a67e622-16')
  VIFBridge(active=False,address=fa:16:3e:9c:90:e1,bridge_name='brq400c4004-37',has_traffic_filtering=True,id=9a67e622-1600-4d18-a802-20ef297e032f,network=Network(400c4004-373e-4f17-ba92-fd30838f48d6),plugin='linux_bridge',port_profile=<?>,preserve_on_delete=False,vif_name='tap9a67e622-16')
2020-04-09 05:35:57.558 3561 INFO nova.virt.libvirt.driver [req-5bef2afe-1ffd-47e2-96c5-0a53b3035f8c a409cd9547a04cbf8c0fb65e812a9645 11ffde9fd4ca44c6b915f7d9a0f6eee2 - default default] [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Deleting instance files /var/lib/nova/instances/6d927be5-aedb-48aa-ab11-1400051e54f9_del
 2020-04-09 05:35:57.559 3561 INFO nova.virt.libvirt.driver [req-5bef2afe-1ffd-47e2-96c5-0a53b3035f8c a409cd9547a04cbf8c0fb65e812a9645 11ffde9fd4ca44c6b915f7d9a0f6eee2 - default default] [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Deletion of /var/lib/nova/instances/6d927be5-aedb-48aa-ab11-1400051e54f9_del complete
 2020-04-09 05:35:57.741 3561 INFO nova.compute.manager [req-5bef2afe-1ffd-47e2-96c5-0a53b3035f8c a409cd9547a04cbf8c0fb65e812a9645 11ffde9fd4ca44c6b915f7d9a0f6eee2 - default default] [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Took 0.40 seconds to destroy the instance on the hypervisor.
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [req-5bef2afe-1ffd-47e2-96c5-0a53b3035f8c a409cd9547a04cbf8c0fb65e812a9645 11ffde9fd4ca44c6b915f7d9a0f6eee2 - default default] [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Failed to build and run instance: OSError: [Errno 2] No such file or directory
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] Traceback (most recent call last):
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/compute/manager.py", line 2248, in _build_and_run_instance
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     block_device_info=block_device_info)
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3137, in spawn
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     mdevs=mdevs)
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5484, in _get_guest_xml
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     context, mdevs)
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 5270, in _get_guest_config
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     flavor, guest.os_type)
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 4052, in _get_guest_storage_config
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     inst_type)
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/driver.py", line 3963, in _get_guest_disk_config
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     disk_unit=disk_unit)
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/imagebackend.py", line 883, in libvirt_info
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     hosts, ports = self.driver.get_mon_addrs()
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/nova/virt/libvirt/storage/rbd_utils.py", line 166, in get_mon_addrs
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     out, _ = processutils.execute(args)
  processutils.execute(*args)
2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/oslo_concurrency/processutils.py", line 391, in execute
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     env=env_variables)
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib/python2.7/site-packages/eventlet/green/subprocess.py", line 55, in __init__
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     subprocess_orig.Popen.__init__(self, args, 0, *argss, *kwds)
  **kwds)
2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib64/python2.7/subprocess.py", line 711, in __init__
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     errread, errwrite)
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]   File "/usr/lib64/python2.7/subprocess.py", line 1327, in _execute_child
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]     raise child_exception
 2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] OSError: [Errno 2] No such file or directory
  2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9] 

2020-04-09 05:35:58.137 3561 ERROR nova.compute.manager [instance: 6d927be5-aedb-48aa-ab11-1400051e54f9]

could anyone give some suggest!,thanks!