Open Stack

Hello,

thanks for your help.

I only added one extra compute node, and i changed the nova.conf on this
node to match the controller's.

Here are the commands.

$ nova-manage cell_v2 list_cells --verbose
+-------+--------------------------------------+-----------------------------------------------------------+--------------------------------------------------------------+----------+
|  Name |                 UUID                 |
Transport URL                       |                     Database
Connection                      | Disabled |
+-------+--------------------------------------+-----------------------------------------------------------+--------------------------------------------------------------+----------+
| cell0 | 00000000-0000-0000-0000-000000000000 |
 none:///                         | mysql+pymysql://
root:linux at 127.0.0.1/nova_cell0?charset=utf8 |  False   |
| cell1 | 1522c22f-64d4-4882-8ae8-ed0f9407407c | rabbit://
stackrabbit:linux at 192.168.40.184:5672/nova_cell1 | mysql+pymysql://
root:linux at 127.0.0.1/nova_cell1?charset=utf8 |  False   |
+-------+--------------------------------------+-----------------------------------------------------------+--------------------------------------------------------------+----------+

$ sudo  rabbitmqctl list_vhosts
Listing vhosts
/
nova_cell1


$ sudo  rabbitmqctl list_permissions -p nova_cell1
Listing permissions in vhost "nova_cell1"
stackrabbit .* .* .*


best,
P.


On Thu, Nov 12, 2020 at 11:16 AM Eugen Block <eblock at nde.ag> wrote:

> Did you change the transport_url only in the nova.conf of the new
> compute node? Or did you also change the rabbitmq configuration? The
> transport_url should match the actual rabbitmq config, of course, and
> it should be the same on every node.
> Does that match your cell setup? To compare run:
>
> control:~ # nova-manage cell_v2 list_cells --verbose
>
> Do you have a vhost configuration? (I'm not familiar with devstack)
> Here's an example of a "nova" vhost with respective permissions:
>
>
> control:~ # rabbitmqctl list_vhosts
> Listing vhosts
> /
> nova
>
> control:~ # rabbitmqctl list_permissions -p nova
> Listing permissions in vhost "nova"
> nova    .*      .*      .*
>
>
> If there's a vhost it should be also reflected in the transport_url.
> Maybe you should share all of the above information here.
>
>
> Zitat von Pavlos Basaras <pbasaras at gmail.com>:
>
> > Hello,
> >
> > maybe there is stg wrong with the installation.
> >
> > Let me clarify a few things.
> >
> > I have devstack deployed in a VM (pre-installed: keystone, glance, nova,
> > placement, cinder, neutron, and horizon.)
> > I can deploy machines successfully at the devstack controller space
> > --everything seems to work fine. --> is seems to work fine with
> opensource
> > mano as well
> >
> > I am trying to add another pc as a compute host to be able to deploy vms
> at
> > this new compute host following (
> >
> https://docs.openstack.org/nova/queens/install/compute-install-ubuntu.html
> )
> >
> > Also attached the nova.conf file. The only major differences are:
> >  --the transport url for rabbitmq which i made according to the transport
> > url of the controller, i.e., instead of
> rabbit://openstack:linux@controller
> >  i have   rabbit://stackrabbit:linux@controller
> > -- i replaced the ports with the service, e.g., instead using the 5000
> port
> > --> "http://controller/identity/v3" instead of  "
> http://controller:5000/v3"
> >
> > please excuse (any) newbie questions
> >
> > all the best,
> > Pavlos.
> >
> >
> > On Wed, Nov 11, 2020 at 4:03 PM Eugen Block <eblock at nde.ag> wrote:
> >
> >> There might be some mixup during the setup, I'm not sure how the other
> >> cell would be created. I'd probably delete the cell with UUID
> >> 1a0fde85-8906-46fb-b721-01a28c978439 and retry the discover_hosts with
> >> the right cell UUID:
> >>
> >> nova-manage cell_v2 delete_cell --cell_uuid
> >> 1a0fde85-8906-46fb-b721-01a28c978439
> >> nova-manage cell_v2 discover_hosts --cell_uuid
> >> 1522c22f-64d4-4882-8ae8-ed0f9407407c
> >>
> >> Does that work?
> >>
> >>
> >> Zitat von Pavlos Basaras <pbasaras at gmail.com>:
> >>
> >> > Hello,
> >> >
> >> > yes i have this discover_hosts_in_cells_interval = 300
> >> >
> >> >
> >> > interestingly when i issued a combination of map_cell_and_hosts and
> >> > update_cell
> >> >
> >> > the output from: nova-manage cell_v2 list_hosts
> >> > +-----------+--------------------------------------+-------------+
> >> > | Cell Name |              Cell UUID               |   Hostname  |
> >> > +-----------+--------------------------------------+-------------+
> >> > |    None   | 1a0fde85-8906-46fb-b721-01a28c978439 | computenode |
> >> > |    None   | 1a0fde85-8906-46fb-b721-01a28c978439 |     nrUE    |
> >> > |   cell1   | 1522c22f-64d4-4882-8ae8-ed0f9407407c |  openstack  |
> >> > +-----------+--------------------------------------+-------------+
> >> >
> >> > when the new compute nodes seem to not have a cell mapped
> >> >
> >> > best,
> >> > P.
> >> >
> >> >
> >> > On Wed, Nov 11, 2020 at 3:26 PM Eugen Block <eblock at nde.ag> wrote:
> >> >
> >> >> Hm,
> >> >>
> >> >> indeed rather strange to me.
> >> >>
> >> >> Do you see anything in the nova-scheduler.log? If you activated the
> >> >>
> >> >> discover_hosts_in_cells_interval = 300
> >> >>
> >> >> it should query for new hosts every 5 minutes.
> >> >>
> >> >>
> >> >>
> >> >> Zitat von Pavlos Basaras <pbasaras at gmail.com>:
> >> >>
> >> >> > Hello,
> >> >> >
> >> >> > thanks very much for your prompt reply.
> >> >> >
> >> >> >
> >> >> > regarding the first command "nova-manage cell_v2 list_hosts" the
> >> output
> >> >> is
> >> >> > the following (openstack is the host of the controller). I dont see
> >> any
> >> >> > other node here, even when i execute  the discover_hosts command
> >> >> >
> >> >> > +-----------+--------------------------------------+-----------+
> >> >> > | Cell Name |              Cell UUID               |  Hostname |
> >> >> > +-----------+--------------------------------------+-----------+
> >> >> > |   cell1   | 1522c22f-64d4-4882-8ae8-ed0f9407407c | openstack |
> >> >> > +-----------+--------------------------------------+-----------+
> >> >> >
> >> >> >
> >> >> > Also this is the output from my controller when i use the command:
> >> sudo
> >> >> -s
> >> >> > /bin/sh -c "nova-manage cell_v2 discover_hosts --verbose" nova
>  (not
> >> >> sure
> >> >> > if this helps)
> >> >> > Found 2 cell mappings.
> >> >> > Skipping cell0 since it does not contain hosts.
> >> >> > Getting computes from cell 'cell1':
> >> 1522c22f-64d4-4882-8ae8-ed0f9407407c
> >> >> > Found 0 unmapped computes in cell:
> >> 1522c22f-64d4-4882-8ae8-ed0f9407407c
> >> >> >
> >> >> > any thoughts?
> >> >> >
> >> >> >
> >> >> > best,
> >> >> > Pavlos.
> >> >>
> >> >>
> >> >>
> >> >>
> >> >>
> >>
> >>
> >>
> >>
>
>
>
>
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