Intentando habilitar Docker en nova-Kilo, ejecutándose sobre 14.04, siguiendohttps://wiki.openstack.org/wiki/Docker. Se agregó compute_driver = novadocker.virt.docker.DockerDrivera "config-flags" dentro del acceso a nova-compute, se comentó el compute_driver en nova.conf de nova-cloud-controller y se reiniciaron los servicios de nova en los nodos de cómputo, controlador y neutrones. Inicialmente, apareció el siguiente error en el nodo de cálculo:
2015-05-29 23:16:45.551 32936 ERROR nova.virt.libvirt.host [req-4aba1c34-9ac3-47bf-8b69-dd16d9a7f38c - - - - -] Connection to libvirt failed: Failed to connect socket to '/var/run/libvirt/libvirt-sock': Permission denied
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host Traceback (most recent call last):
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/host.py", line 524, in get_connection
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host conn = self._get_connection()
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/host.py", line 511, in _get_connection
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host wrapped_conn = self._get_new_connection()
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/host.py", line 463, in _get_new_connection
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host wrapped_conn = self._connect(self._uri, self._read_only)
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/host.py", line 314, in _connect
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host libvirt.openAuth, uri, auth, flags)
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 141, in proxy_call
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host rv = execute(f, *args, **kwargs)
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 122, in execute
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host six.reraise(c, e, tb)
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host File "/usr/lib/python2.7/dist-packages/eventlet/tpool.py", line 80, in tworker
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host rv = meth(*args, **kwargs)
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host File "/usr/lib/python2.7/dist-packages/libvirt.py", line 105, in openAuth
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host if ret is None:raise libvirtError('virConnectOpenAuth() failed')
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host libvirtError: Failed to connect socket to '/var/run/libvirt/libvirt-sock': Permission denied
2015-05-29 23:16:45.551 32936 TRACE nova.virt.libvirt.host
2015-05-29 23:16:45.559 32936 ERROR nova.openstack.common.threadgroup [req-50db7bae-f838-4d3a-a5f6-f70d5ce00a45 - - - - -] Connection to the hypervisor is broken on host: lab-cn01
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup Traceback (most recent call last):
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/nova/openstack/common/threadgroup.py", line 145, in wait
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup x.wait()
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/nova/openstack/common/threadgroup.py", line 47, in wait
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup return self.thread.wait()
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 175, in wait
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup return self._exit_event.wait()
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/eventlet/event.py", line 121, in wait
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup return hubs.get_hub().switch()
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 294, in switch
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup return self.greenlet.switch()
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 214, in main
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup result = function(*args, **kwargs)
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/nova/openstack/common/service.py", line 497, in run_service
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup service.start()
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/nova/service.py", line 164, in start
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup self.manager.init_host()
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1261, in init_host
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup self.driver.init_host(host=self.host)
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 529, in init_host
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup self._do_quality_warnings()
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/driver.py", line 507, in _do_quality_warnings
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup caps = self._host.get_capabilities()
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/host.py", line 745, in get_capabilities
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup xmlstr = self.get_connection().getCapabilities()
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/nova/virt/libvirt/host.py", line 533, in get_connection
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup raise exception.HypervisorUnavailable(host=CONF.host)
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup HypervisorUnavailable: Connection to the hypervisor is broken on host: lab-cn01
2015-05-29 23:16:45.559 32936 TRACE nova.openstack.common.threadgroup
Y lo solucioné emitiendo chmod 777 /var/run/libvirt/libvirt-sock. El problema ahora es que no puedo iniciar ninguna imagen desde Horizon. Las instancias salen debido a la ausencia del disco de arranque:
Booting from Hard Disk...
Boot failed: not a bootable disk
No bootable device.
Sin embargo, puedo generar instancias usando Docker CLI, en el nodo de cálculo de destino. Por extraño que parezca, el tipo de hipervisor sigue siendo QEMU:
# nova hypervisor-show lab-cn01.maas17 | grep type
| hypervisor_type | QEMU
¿Alguna idea?
Salud,
Edición 1: seguí la sugerencia enhttps://ask.openstack.org/en/question/52485/nova-compute-does-not-work-with-docker-hypervisor/y actualizó nova-compute.conf, en consecuencia. Nodo de cálculo Nova; sin embargo, informa el siguiente error al reiniciar:
2015-06-01 17:02:59.784 42703 ERROR nova.openstack.common.threadgroup [req-9f37298d-828c-4ac5-9834-320cc082f92b - - - - -] 'module' object has no attribute 'DOCKER'
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup Traceback (most recent call last):
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/nova/openstack/common/threadgroup.py", line 145, in wait
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup x.wait()
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/nova/openstack/common/threadgroup.py", line 47, in wait
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup return self.thread.wait()
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 175, in wait
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup return self._exit_event.wait()
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/eventlet/event.py", line 121, in wait
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup return hubs.get_hub().switch()
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/eventlet/hubs/hub.py", line 294, in switch
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup return self.greenlet.switch()
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/eventlet/greenthread.py", line 214, in main
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup result = function(*args, **kwargs)
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/nova/openstack/common/service.py", line 497, in run_service
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup service.start()
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/nova/service.py", line 183, in start
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup self.manager.pre_start_hook()
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1291, in pre_start_hook
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup self.update_available_resource(nova.context.get_admin_context())
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 6240, in update_available_resource
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup rt.update_available_resource(context)
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup File "/usr/lib/python2.7/dist-packages/nova/compute/resource_tracker.py", line 376, in update_available_resource
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup resources = self.driver.get_available_resource(self.nodename)
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup File "/home/ubuntu/dockerdrv/src/novadocker/novadocker/virt/docker/driver.py", line 312, in get_available_resource
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup (arch.I686, hv_type.DOCKER, vm_mode.EXE),
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup AttributeError: 'module' object has no attribute 'DOCKER'
2015-06-01 17:02:59.784 42703 TRACE nova.openstack.common.threadgroup
Edición 2: se agregaron entradas de la ventana acoplable en /usr/lib/python2.7/dist-packages/nova/compute/hv_type.py y el tipo de hipervisor se cambió a la ventana acoplable:
# nova hypervisor-show lab-cn01 | grep type
| hypervisor_type | docker |
El problema ahora es que Nova Compute no puede acceder a las imágenes de la ventana acoplable:
2015-06-01 23:06:22.641 7842 ERROR nova.compute.manager [-] [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] Instance failed to spawn
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] Traceback (most recent call last):
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2442, in _build_resources
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] yield resources
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] File "/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2314, in _build_and_run_instance
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] block_device_info=block_device_info)
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] File "/home/ubuntu/docker2/src/novadocker/novadocker/virt/docker/driver.py", line 436, in spawn
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] image = self._pull_missing_image(context, image_meta, instance)
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] File "/home/ubuntu/docker2/src/novadocker/novadocker/virt/docker/driver.py", line 377, in _pull_missing_image
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] return self.docker.inspect_image(self._encode_utf8(image_meta['name']))
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] File "/home/ubuntu/docker2/src/novadocker/novadocker/virt/docker/client.py", line 36, in wrapper
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] out = f(*args, **kwds)
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] File "/usr/local/lib/python2.7/dist-packages/docker/utils/decorators.py", line 15, in wrapped
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] return f(self, resource_id, *args, **kwargs)
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] File "/usr/local/lib/python2.7/dist-packages/docker/client.py", line 752, in inspect_image
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] True
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] File "/usr/local/lib/python2.7/dist-packages/docker/client.py", line 126, in _result
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] self._raise_for_status(response)
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] File "/usr/local/lib/python2.7/dist-packages/docker/client.py", line 122, in _raise_for_status
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] raise errors.APIError(e, response, explanation=explanation)
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92] APIError: 404 Client Error: Not Found ("No such image: ubuntu-14.04.2-docker")
2015-06-01 23:06:22.641 7842 TRACE nova.compute.manager [instance: ac234f55-1dc5-416e-85a2-a5b5dff37a92]
Edición 3:
lo anterior se debe a múltiples problemas:
- Informe de errorhttps://bugs.launchpad.net/nova/+bug/1461217
- No se pueden ejecutar todas las imágenes típicas de Docker, por ejemplo, la última versión de ubuntu 07f8e8c5e660 o la última versión de cirros d8de71c04044. (Hasta ahora, sólo puedo ejecutar rastasheep/ubuntu-sshd 14.04 063f5e7d07b3.)
Edición 4: ¡
Los nombres de las imágenes de Glance y Docker deben ser iguales! Eso es todo amigos.