[Openstack] Running multiple nova-cells
Sam Morrison
sorrison at gmail.com
Thu Feb 19 06:03:16 UTC 2015
I suggest you read the docs, these questions are answered there.
Thanks,
Sam
> On 5 Feb 2015, at 6:40 pm, raghavendra.lad at accenture.com wrote:
>
> Hi Sam,
>
> I am able to run the nova DB sync however it gives error and is not able to sync with (nova) 8774.
> Let me know if we have to create nova cells or user in Mysql database or how rabbit user id for child
> Or api user works.
>
>
> Regards,
> Raghavendra Lad
>
> From: Sam Morrison [mailto:sorrison at gmail.com]
> Sent: Thursday, February 05, 2015 1:48 AM
> To: Lad, Raghavendra
> Subject: Re: [Openstack] Running multiple nova-cells
>
> You need to run a DB sync to initialize your DB.
>
> Sam
>
>
>
> On 5 Feb 2015, at 1:21 am, <raghavendra.lad at accenture.com <mailto:raghavendra.lad at accenture.com>> <raghavendra.lad at accenture.com <mailto:raghavendra.lad at accenture.com>> wrote:
>
> Hi Sam,
>
> I am able to perform the configuration on API cell as root for child cells.
>
> I need help with the Parent.
>
> I am getting the error
>
> Command failed, please check log for more info
> 2015-02-04 12:25:26.625 8239 CRITICAL nova [req-de64d699-abba-4cfb-abf7-3e24a9b7c770 None] OperationalError: (OperationalError) no such table: cells u'INSERT INTO cells (deleted_at, deleted, created_at, updated_at, name, api_url, transport_url, weight_offset, weight_scale, is_parent) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)' (None, 0, '2015-02-04 06:55:26.623676', None, u'api', None, 'rabbit://api_user:api_passwd@hostnameip:5672/api_vhost', 1.0, 1.0, 1)
>
>
> Regards,
> Raghavendra Lad
>
> From: raghavendra.lad at accenture.com <mailto:raghavendra.lad at accenture.com> [mailto:raghavendra.lad at accenture.com <mailto:raghavendra.lad at accenture.com>]
> Sent: Wednesday, February 04, 2015 1:31 PM
> To: openstack at lists.openstack.org <mailto:openstack at lists.openstack.org>
> Cc: raghavendra_lad at rediffmail.com <mailto:raghavendra_lad at rediffmail.com>
> Subject: [Openstack] FW: cells
>
> HI Stackers,
>
>
>
> I am trying to implement the cells in Openstack. However I get the below error when I follow the Openstack document.
>
> The controller node has nova-api and all nova services. The compute node has the child configuration. Any thoughts or ideas
>
> Would be appreciated.
>
>
>
> Reference
>
> http://docs.openstack.org/juno/config-reference/content/section_compute-cells.html <http://docs.openstack.org/juno/config-reference/content/section_compute-cells.html>
>
>
> # nova-manage cell create --name api --cell_type parent \
>
> > --username api_user --password api_passwd --hostname ip\
>
> > --port 5672 --virtual_host api_vhost --woffset 1.0 --wscale 1.0
>
> Command failed, please check log for more info
>
> 2015-02-04 12:25:26.625 8239 CRITICAL nova [req-de64d699-abba-4cfb-abf7-3e24a9b7c770 None] OperationalError: (OperationalError) no such table: cells u'INSERT INTO cells (deleted_at, deleted, created_at, updated_at, name, api_url, transport_url, weight_offset, weight_scale, is_parent) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)' (None, 0, '2015-02-04 06:55:26.623676', None, u'api', None, 'rabbit://api_user:api_passwd@hostnameip:5672/api_vhost', 1.0, 1.0, 1)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova Traceback (most recent call last):
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/bin/nova-manage", line 10, in <module>
>
> 2015-02-04 12:25:26.625 8239 TRACE nova sys.exit(main())
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/nova/cmd/manage.py", line 1401, in main
>
> 2015-02-04 12:25:26.625 8239 TRACE nova ret = fn(*fn_args, **fn_kwargs)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/nova/cmd/manage.py", line 1239, in create
>
> 2015-02-04 12:25:26.625 8239 TRACE nova db.cell_create(ctxt, values)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/nova/db/api.py", line 1558, in cell_create
>
> 2015-02-04 12:25:26.625 8239 TRACE nova return IMPL.cell_create(context, values)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/api.py", line 125, in wrapper
>
> 2015-02-04 12:25:26.625 8239 TRACE nova return f(*args, **kwargs)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/api.py", line 4663, in cell_create
>
> 2015-02-04 12:25:26.625 8239 TRACE nova cell.save()
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/nova/db/sqlalchemy/models.py", line 62, in save
>
> 2015-02-04 12:25:26.625 8239 TRACE nova super(NovaBase, self).save(session=session)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/oslo/db/sqlalchemy/models.py", line 48, in save
>
> 2015-02-04 12:25:26.625 8239 TRACE nova session.flush()
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 1919, in flush
>
> 2015-02-04 12:25:26.625 8239 TRACE nova self._flush(objects)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 2037, in _flush
>
> 2015-02-04 12:25:26.625 8239 TRACE nova transaction.rollback(_capture_exception=True)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/sqlalchemy/util/langhelpers.py", line 60, in __exit__
>
> 2015-02-04 12:25:26.625 8239 TRACE nova compat.reraise(exc_type, exc_value, exc_tb)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/session.py", line 2001, in _flush
>
> 2015-02-04 12:25:26.625 8239 TRACE nova flush_context.execute()
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/unitofwork.py", line 372, in execute
>
> 2015-02-04 12:25:26.625 8239 TRACE nova rec.execute(self)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/unitofwork.py", line 526, in execute
>
> 2015-02-04 12:25:26.625 8239 TRACE nova uow
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/persistence.py", line 65, in save_obj
>
> 2015-02-04 12:25:26.625 8239 TRACE nova mapper, table, insert)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/sqlalchemy/orm/persistence.py", line 602, in _emit_insert_statements
>
> 2015-02-04 12:25:26.625 8239 TRACE nova execute(statement, params)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 729, in execute
>
> 2015-02-04 12:25:26.625 8239 TRACE nova return meth(self, multiparams, params)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/sqlalchemy/sql/elements.py", line 321, in _execute_on_connection
>
> 2015-02-04 12:25:26.625 8239 TRACE nova return connection._execute_clauseelement(self, multiparams, params)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 826, in _execute_clauseelement
>
> 2015-02-04 12:25:26.625 8239 TRACE nova compiled_sql, distilled_params
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 958, in _execute_context
>
> 2015-02-04 12:25:26.625 8239 TRACE nova context)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1156, in _handle_dbapi_exception
>
> 2015-02-04 12:25:26.625 8239 TRACE nova util.raise_from_cause(newraise, exc_info)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/sqlalchemy/util/compat.py", line 199, in raise_from_cause
>
> 2015-02-04 12:25:26.625 8239 TRACE nova reraise(type(exception), exception, tb=exc_tb)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 951, in _execute_context
>
> 2015-02-04 12:25:26.625 8239 TRACE nova context)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova File "/usr/lib/python2.7/dist-packages/sqlalchemy/engine/default.py", line 436, in do_execute
>
> 2015-02-04 12:25:26.625 8239 TRACE nova cursor.execute(statement, parameters)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova OperationalError: (OperationalError) no such table: cells u'INSERT INTO cells (deleted_at, deleted, created_at, updated_at, name, api_url, transport_url, weight_offset, weight_scale, is_parent) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)' (None, 0, '2015-02-04 06:55:26.623676', None, u'api', None, 'rabbit://api_user:api_passwd@hotsnameip:5672/api_vhost', 1.0, 1.0, 1)
>
> 2015-02-04 12:25:26.625 8239 TRACE nova
>
>
> Regards,
>
> Raghavendra Lad
>
>
>
>
>
>
>
> From: Openstack [mailto:openstack-bounces+raghavendra.lad=accenture.com at lists.launchpad.net <mailto:openstack-bounces+raghavendra.lad=accenture.com at lists.launchpad.net>] On Behalf Of Sam Morrison
> Sent: Monday, July 15, 2013 12:22 PM
> To: openstack at lists.launchpad.net <mailto:openstack at lists.launchpad.net> list
> Subject: [Openstack] Running multiple nova-cells
>
> Hi,
>
> We have a reasonably large deployment with nova cells and we are having issues consuming messages fast enough at the top level due to all the instance updates etc.
>
> We've done some tuning to some of the periodic tasks but users can trigger hundreds of messages to be sent upwards.
> It looks like a bug where 1 message to be sent upwards somehow turns into about 50. We're debugging this at the moment.
>
> Bu what I'm also wondering is if it's possible to run multiple nova-cell processes within a cell?
> I see there is a blueprint [1] which makes me think it's not possible yet?
>
> We get spikes of 100/200 messages a second for a couple minutes and it takes a while for our nova-cell service to consume all of these.
>
> Cheers,
> Sam
>
>
> [1] https://blueprints.launchpad.net/nova/+spec/multiple-nova-cell <https://blueprints.launchpad.net/nova/+spec/multiple-nova-cell>
>
>
>
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>
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