This is a bug in the nova-lxd driver code, which manages bugs through
some other launchpad project.
** Tags added: lxd
** Changed in: nova
Status: New => Invalid
** Also affects: nova-lxd
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1709550
Title:
nova-compute doesn't start if there is difference between current
compute driver and driver which was used to create instance
Status in OpenStack Compute (nova):
Invalid
Status in nova-lxd:
New
Bug description:
Steps to reproduce
==================
1. Create instance with (for example) qemu as nova-compute backend.
2. Change nova-compute backend to (for example) lxd.
3. Restart nova-compute service
Expected result
===============
I expected to see an error with something like this: "You have to delete all
your instances, which were created with old nova-compute driver. Use 'openstack
server delete instance-name' on your controller node."
Actual result
=============
nova-compute service doesn't start and there is no clear explanation in
nova-compute.log (see log below).
Environment
===========
1. Version of OpenStack is Ocata:
user@compute ~> dpkg -l | grep nova
rc nova-api 2:15.0.2-0ubuntu1~cloud0
all OpenStack Compute - API frontend
ii nova-common 2:15.0.5-0ubuntu1~cloud0
all OpenStack Compute - common files
ii nova-compute 2:15.0.5-0ubuntu1~cloud0
all OpenStack Compute - compute node base
rc nova-compute-kvm 2:15.0.5-0ubuntu1~cloud0
all OpenStack Compute - compute node (KVM)
ii nova-compute-libvirt 2:15.0.5-0ubuntu1~cloud0
all OpenStack Compute - compute node libvirt support
ii nova-compute-lxd 15.0.2-0ubuntu1~cloud0
all Openstack Compute - LXD container hypervisor support
rc nova-conductor 2:15.0.2-0ubuntu1~cloud0
all OpenStack Compute - conductor service
rc nova-consoleauth 2:15.0.2-0ubuntu1~cloud0
all OpenStack Compute - Console Authenticator
rc nova-novncproxy 2:15.0.2-0ubuntu1~cloud0
all OpenStack Compute - NoVNC proxy
rc nova-placement-api 2:15.0.2-0ubuntu1~cloud0
all OpenStack Compute - placement API frontend
rc nova-scheduler 2:15.0.2-0ubuntu1~cloud0
all OpenStack Compute - virtual machine scheduler
ii python-nova 2:15.0.5-0ubuntu1~cloud0
all OpenStack Compute Python libraries
ii python-nova-lxd 15.0.2-0ubuntu1~cloud0
all OpenStack Compute Python libraries - LXD driver
ii python-novaclient 2:7.1.0-0ubuntu1~cloud0
all client library for OpenStack Compute API - Python 2.7
2. Hypervisors: qemu and lxd
3. Storage: lvm
4. Networking type: Neutron with OpenVSwitch
Log
==============
nova-compute.log:
2017-08-08 16:18:51.112 29592 INFO nova.service [-] Starting compute node
(version 15.0.5)
2017-08-08 16:18:51.882 29592 INFO oslo.privsep.daemon
[req-0777ab5e-8b64-4631-8690-3dcf94ab2118 - - - - -] Running privsep helper:
['sudo', 'nova-rootwrap', '/etc/nova/rootwrap.conf', 'privsep-helper',
'--config-file', '/etc/nova/nova.conf', '--config-file',
'/etc/nova/nova-compute.conf', '--privsep_context',
'vif_plug_linux_bridge.privsep.vif_plug', '--privsep_sock_path',
'/tmp/tmpGK77AD/privsep.sock']
2017-08-08 16:18:53.810 29592 INFO oslo.privsep.daemon
[req-0777ab5e-8b64-4631-8690-3dcf94ab2118 - - - - -] Spawned new privsep daemon
via rootwrap
2017-08-08 16:18:53.812 29592 INFO oslo.privsep.daemon [-] privsep daemon
starting
2017-08-08 16:18:53.812 29592 INFO oslo.privsep.daemon [-] privsep process
running with uid/gid: 0/0
2017-08-08 16:18:53.813 29592 INFO oslo.privsep.daemon [-] privsep process
running with capabilities (eff/prm/inh): CAP_NET_ADMIN/CAP_NET_ADMIN/none
2017-08-08 16:18:53.813 29592 INFO oslo.privsep.daemon [-] privsep daemon
running as pid 29634
2017-08-08 16:18:53.957 29592 INFO os_vif
[req-0777ab5e-8b64-4631-8690-3dcf94ab2118 - - - - -] Successfully plugged vif
VIFBridge(active=True,address=fa:16:3e:ae:ba:06,bridge_name='brq3b3f3c75-8f',has_traffic_filtering=True,id=4a1e4eaa-17d3-4baa-a2c5-9f6a7369272c,network=Network(3b3f3c75-8f2b-4fe0-b91e-9c3dd53fe9ec),plugin='linux_bridge',port_profile=<?>,preserve_on_delete=False,vif_name='tap4a1e4eaa-17')
2017-08-08 16:18:54.310 29592 INFO os_vif
[req-0777ab5e-8b64-4631-8690-3dcf94ab2118 - - - - -] Successfully plugged vif
VIFBridge(active=True,address=fa:16:3e:7e:a4:a1,bridge_name='brq3b3f3c75-8f',has_traffic_filtering=True,id=ae4b3102-ad58-474c-bfbf-da6b083eda9b,network=Network(3b3f3c75-8f2b-4fe0-b91e-9c3dd53fe9ec),plugin='linux_bridge',port_profile=<?>,preserve_on_delete=False,vif_name='tapae4b3102-ad')
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service
[req-0777ab5e-8b64-4631-8690-3dcf94ab2118 - - - - -] Error starting thread.
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service Traceback (most
recent call last):
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service File
"/usr/lib/python2.7/dist-packages/oslo_service/service.py", line 722, in
run_service
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service service.start()
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service File
"/usr/lib/python2.7/dist-packages/nova/service.py", line 144, in start
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service
self.manager.init_host()
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1152, in
init_host
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service
self._init_instance(context, instance)
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 862, in
_init_instance
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service
current_power_state = self._get_power_state(context, instance)
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1175, in
_get_power_state
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service return
self.driver.get_info(instance).state
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service File
"/usr/lib/python2.7/dist-packages/nova/virt/lxd/driver.py", line 306, in
get_info
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service container =
self.client.containers.get(instance.name)
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service File
"/usr/lib/python2.7/dist-packages/pylxd/models/container.py", line 104, in get
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service response =
client.api.containers[name].get()
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service File
"/usr/lib/python2.7/dist-packages/pylxd/client.py", line 103, in get
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service
self._assert_response(response, stream=kwargs.get('stream', False))
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service File
"/usr/lib/python2.7/dist-packages/pylxd/client.py", line 68, in _assert_response
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service raise
exceptions.NotFound(response)
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service NotFound: not found
2017-08-08 16:18:54.408 29592 ERROR oslo_service.service
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