Open Stack

I would check the nova-scheduler log. It should explain to you why it’s unable to schedule the instance

-----Original Message-----
From: Andy Wojnarek <andy.wojnarek at theatsgroup.com>
Date: Wednesday, May 17, 2017 at 3:09 PM
To: "openstack-operators at lists.openstack.org" <openstack-operators at lists.openstack.org>
Subject: [Openstack-operators] Cannot launch instances on Ocata.

    Hi,
     
    I have a new Openstack cloud running in our lab, but I am unable to launch instances. This is Ocata running on Ubuntu 16.04.2
    
     
    Here are the errors I am getting when trying to launch an instance:
     
    On my controller node in log file /var/log/nova/nova-conductor.log
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager [req-a9beeb33-9454-47a2-96e2-908d5b1e4c46 b07949d8ae7144049851c7abb39ac6db 4fd0307bf4b74c5a8718b180c24c7cff - - -] Failed to schedule instances
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager Traceback (most recent call last):
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager   File "/usr/lib/python2.7/dist-packages/nova/conductor/manager.py", line 866, in schedule_and_build_instances
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager     request_specs[0].to_legacy_filter_properties_dict())
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager   File "/usr/lib/python2.7/dist-packages/nova/conductor/manager.py", line 597, in _schedule_instances
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager     hosts = self.scheduler_client.select_destinations(context, spec_obj)
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager   File "/usr/lib/python2.7/dist-packages/nova/scheduler/utils.py", line 371, in wrapped
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager     return func(*args, **kwargs)
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager   File "/usr/lib/python2.7/dist-packages/nova/scheduler/client/__init__.py", line 51, in select_destinations
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager     return self.queryclient.select_destinations(context, spec_obj)
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager   File "/usr/lib/python2.7/dist-packages/nova/scheduler/client/__init__.py", line 37, in __run_method
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager     return getattr(self.instance, __name)(*args, **kwargs)
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager   File "/usr/lib/python2.7/dist-packages/nova/scheduler/client/query.py", line 32, in select_destinations
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj)
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager   File "/usr/lib/python2.7/dist-packages/nova/scheduler/rpcapi.py", line 129, in select_destinations
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/client.py", line 169, in call
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager     retry=self.retry)
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager   File "/usr/lib/python2.7/dist-packages/oslo_messaging/transport.py", line 97, in _send
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager     timeout=timeout, retry=retry)
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager   File "/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py", line 458, in send
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager     retry=retry)
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager   File "/usr/lib/python2.7/dist-packages/oslo_messaging/_drivers/amqpdriver.py", line 449, in _send
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager     raise result
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager NoValidHost_Remote: No valid host was found. There are not enough hosts available.
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager Traceback (most recent call last):
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/server.py", line 218, in inner
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager     return func(*args, **kwargs)
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager   File "/usr/lib/python2.7/dist-packages/nova/scheduler/manager.py", line 98, in select_destinations
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager     dests = self.driver.select_destinations(ctxt, spec_obj)
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager   File "/usr/lib/python2.7/dist-packages/nova/scheduler/filter_scheduler.py", line 79, in select_destinations
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager     raise exception.NoValidHost(reason=reason)
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager NoValidHost: No valid host was found. There are not enough hosts available.
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager
    2017-05-17 16:48:33.656 2654 ERROR nova.conductor.manager
    2017-05-17 16:48:33.686 2654 DEBUG oslo_db.sqlalchemy.engines [req-a9beeb33-9454-47a2-96e2-908d5b1e4c46 b07949d8ae7144049851c7abb39ac6db 4fd0307bf4b74c5a8718b180c24c7cff - - -] MySQL server mode set to STRICT_TRANS_TABLES,STRICT_ALL_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,TRADITIONAL,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
     _check_effective_sql_mode /usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/engines.py:261
    2017-05-17 16:48:36.013 2654 WARNING nova.scheduler.utils [req-a9beeb33-9454-47a2-96e2-908d5b1e4c46 b07949d8ae7144049851c7abb39ac6db 4fd0307bf4b74c5a8718b180c24c7cff - - -] Failed to compute_task_build_instances:
     No valid host was found. There are not enough hosts available.
     
     
    The hypervisor is up:
    root at gvicopnstk01:/var/log/nova# openstack hypervisor list
    +----+---------------------+-----------------+-----------------+-------+
    | ID | Hypervisor Hostname | Hypervisor Type | Host IP         | State |
    +----+---------------------+-----------------+-----------------+-------+
    |  1 | gvicopnstk02        | QEMU            | 192.168.241.115 | up    |
     
    Services are up:
    root at gvicopnstk01:/var/log/nova# openstack compute service list
    +----+------------------+--------------+----------+---------+-------+----------------------------+
    | ID | Binary           | Host         | Zone     | Status  | State | Updated At                 |
    +----+------------------+--------------+----------+---------+-------+----------------------------+
    |  6 | nova-consoleauth | gvicopnstk01 | internal | enabled | up    | 2017-05-17T21:07:00.000000 |
    |  7 | nova-scheduler   | gvicopnstk01 | internal | enabled | up    | 2017-05-17T21:07:00.000000 |
    |  9 | nova-conductor   | gvicopnstk01 | internal | enabled | up    | 2017-05-17T21:07:00.000000 |
    | 24 | nova-compute     | gvicopnstk02 | nova     | enabled | up    | 2017-05-17T21:07:07.000000 |
     
    I absolutely cannot figure out. It’s acting like there are no valid compute nodes available, but all the Openstack commands are coming back as status is up and running.
     
    Thanks,
    Andrew Wojnarek |  Sr. Systems Engineer    | ATS Group, LLC
    mobile 717.856.6901 | andy.wojnarek at TheATSGroup.com
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