[Openstack] 'nova boot' : 'No valid host was found'

Lorin Hochstein lorin at nimbisservices.com
Mon Dec 2 21:46:58 UTC 2013


On Mon, Dec 2, 2013 at 4:17 PM, John Smith <lbalbalba at gmail.com> wrote:

> Hi,
>
>
> Im trying out devstack. But whenever I try to start a flavor larger
> than m1.nano, I get this error : " No valid host was found."
>
> I dont know where to even begin to troubleshoot this. Any and all help
> is appreciated.
>
>
>
> Regards,
>
>
> John Smith
>
>
One of the causes of that message is that the scheduler cannot locate a
compute host that has sufficient resources (CPUs, memory, storage) to
create a VM with the requested flavor.


My first guess would be that you don't have enough memory on the machine
where you're running DevStack. Check your memory usage and free disk space
and see if there's enough room for an m1.small. If you don't have enough
memory/disk that's your issue. If that isn't it, you'll need to check the
scheduler log file to see what went wrong.


Lorin


>
> ----------------------------------------------------------------------
> $ source /usr/local/src/devstack/openrc admin
> -bash-4.2$ wget
> https://launchpadlibrarian.net/83303699/cirros-0.3.0-i386-disk.img
> --2013-12-02 16:09:37--
> https://launchpadlibrarian.net/83303699/cirros-0.3.0-i386-disk.img
> Resolving launchpadlibrarian.net (launchpadlibrarian.net)...
> 91.189.89.228, 91.189.89.229
> Connecting to launchpadlibrarian.net
> (launchpadlibrarian.net)|91.189.89.228|:443... connected.
> HTTP request sent, awaiting response... 200 OK
> Length: 9159168 (8.7M) [text/plain]
> Saving to: âcirros-0.3.0-i386-disk.imgâ
>
>
> 100%[=======================================================================================================================================>]
> 9,159,168   1.70MB/s   in 5.3s
>
> 2013-12-02 16:09:43 (1.64 MB/s) - âcirros-0.3.0-i386-disk.imgâ saved
> [9159168/9159168]
>
> -bash-4.2$ glance image-create --name=cirros-0.3.0-i386
> --is-public=true --container-format=bare --disk-format=qcow2 <
> cirros-0.3.0-i386-disk.img
> +------------------+--------------------------------------+
> | Property         | Value                                |
> +------------------+--------------------------------------+
> | checksum         | 90169ba6f09b5906a7f0755bd00bf2c3     |
> | container_format | bare                                 |
> | created_at       | 2013-12-02T21:09:50                  |
> | deleted          | False                                |
> | deleted_at       | None                                 |
> | disk_format      | qcow2                                |
> | id               | 597221dd-5be5-4e56-8339-11adbe5653bf |
> | is_public        | True                                 |
> | min_disk         | 0                                    |
> | min_ram          | 0                                    |
> | name             | cirros-0.3.0-i386                    |
> | owner            | 2d526ede707349f2813b06bf1b6e4a0c     |
> | protected        | False                                |
> | size             | 9159168                              |
> | status           | active                               |
> | updated_at       | 2013-12-02T21:09:51                  |
> +------------------+--------------------------------------+
> -bash-4.2$ glance image-list
>
> +--------------------------------------+---------------------------------+-------------+------------------+----------+--------+
> | ID                                   | Name
>   | Disk Format | Container Format | Size     | Status |
>
> +--------------------------------------+---------------------------------+-------------+------------------+----------+--------+
> | 597221dd-5be5-4e56-8339-11adbe5653bf | cirros-0.3.0-i386
>   | qcow2       | bare             | 9159168  | active |
> | 799e3f3f-83be-402b-9837-f94cc19e97ff | cirros-0.3.1-x86_64-uec
>   | ami         | ami              | 25165824 | active |
> | 69ac528f-48b1-4f22-b71a-386ada686ba9 |
> cirros-0.3.1-x86_64-uec-kernel  | aki         | aki              |
> 4955792  | active |
> | 9d094640-e2e2-4bef-b07e-85f375b5e5ea |
> cirros-0.3.1-x86_64-uec-ramdisk | ari         | ari              |
> 3714968  | active |
>
> +--------------------------------------+---------------------------------+-------------+------------------+----------+--------+
> -bash-4.2$ nova flavor-list
>
> +----+-----------+-----------+------+-----------+------+-------+-------------+-----------+
> | ID | Name      | Memory_MB | Disk | Ephemeral | Swap | VCPUs |
> RXTX_Factor | Is_Public |
>
> +----+-----------+-----------+------+-----------+------+-------+-------------+-----------+
> | 1  | m1.tiny   | 512       | 1    | 0         |      | 1     | 1.0
>       | True      |
> | 2  | m1.small  | 2048      | 20   | 0         |      | 1     | 1.0
>       | True      |
> | 3  | m1.medium | 4096      | 40   | 0         |      | 2     | 1.0
>       | True      |
> | 4  | m1.large  | 8192      | 80   | 0         |      | 4     | 1.0
>       | True      |
> | 42 | m1.nano   | 64        | 0    | 0         |      | 1     | 1.0
>       | True      |
> | 5  | m1.xlarge | 16384     | 160  | 0         |      | 8     | 1.0
>       | True      |
> | 84 | m1.micro  | 128       | 0    | 0         |      | 1     | 1.0
>       | True      |
>
> +----+-----------+-----------+------+-----------+------+-------+-------------+-----------+
> -bash-4.2$ nova boot --flavor m1.small --image cirros-0.3.0-i386 myvm
>
> n+--------------------------------------+--------------------------------------+
> | Property                             | Value
>    |
>
> +--------------------------------------+--------------------------------------+
> | OS-DCF:diskConfig                    | MANUAL
>     |
> | OS-EXT-AZ:availability_zone          | nova
>     |
> | OS-EXT-SRV-ATTR:host                 | None
>     |
> | OS-EXT-SRV-ATTR:hypervisor_hostname  | None
>     |
> | OS-EXT-SRV-ATTR:instance_name        | instance-00000001
>    |
> | OS-EXT-STS:power_state               | 0
>    |
> | OS-EXT-STS:task_state                | scheduling
>     |
> | OS-EXT-STS:vm_state                  | building
>     |
> | OS-SRV-USG:launched_at               | None
>     |
> | OS-SRV-USG:terminated_at             | None
>     |
> | accessIPv4                           |
>    |
> | accessIPv6                           |
>    |
> | adminPass                            | awDbZDS6uNof
>     |
> | config_drive                         |
>    |
> | created                              | 2013-12-02T21:10:26Z
>     |
> | flavor                               | m1.small
>     |
> | hostId                               |
>    |
> | id                                   |
> 585fe5f3-e3ab-46b5-adf6-1da0c112bda4 |
> | image                                | cirros-0.3.0-i386
>    |
> | key_name                             | None
>     |
> | metadata                             | {}
>     |
> | name                                 | myvm
>     |
> | os-extended-volumes:volumes_attached | []
>     |
> | progress                             | 0
>    |
> | security_groups                      | [{u'name': u'default'}]
>    |
> | status                               | BUILD
>    |
> | tenant_id                            | 2d526ede707349f2813b06bf1b6e4a0c
>     |
> | updated                              | 2013-12-02T21:10:26Z
>     |
> | user_id                              | fe775b8220d5436380f0de7ec61cfae3
>     |
>
> +--------------------------------------+--------------------------------------+
>
>                          -bash-4.2$ nova list
>
> +--------------------------------------+------+--------+------------+-------------+--------------------+
> | ID                                   | Name | Status | Task State |
> Power State | Networks           |
>
> +--------------------------------------+------+--------+------------+-------------+--------------------+
> | 585fe5f3-e3ab-46b5-adf6-1da0c112bda4 | myvm | BUILD  | spawning   |
> NOSTATE     | private=10.4.128.2 |
>
> +--------------------------------------+------+--------+------------+-------------+--------------------+
> -bash-4.2$ nova show myvm
>
> +--------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
> | Property                             | Value
>
>                                                                   |
>
> +--------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
> | OS-DCF:diskConfig                    | MANUAL
>
>                                                                   |
> | OS-EXT-AZ:availability_zone          | nova
>
>                                                                   |
> | OS-EXT-SRV-ATTR:host                 | localhost.localdomain
>
>                                                                   |
> | OS-EXT-SRV-ATTR:hypervisor_hostname  | localhost.localdomain
>
>                                                                   |
> | OS-EXT-SRV-ATTR:instance_name        | instance-00000001
>
>                                                                   |
> | OS-EXT-STS:power_state               | 0
>
>                                                                   |
> | OS-EXT-STS:task_state                | None
>
>                                                                   |
> | OS-EXT-STS:vm_state                  | error
>
>                                                                   |
> | OS-SRV-USG:launched_at               | None
>
>                                                                   |
> | OS-SRV-USG:terminated_at             | None
>
>                                                                   |
> | accessIPv4                           |
>
>                                                                   |
> | accessIPv6                           |
>
>                                                                   |
> | config_drive                         |
>
>                                                                   |
> | created                              | 2013-12-02T21:10:26Z
>
>                                                                   |
> | fault                                | {u'message': u'No valid host
> was found. ', u'code': 500, u'details': u'  File
> "/opt/stack/nova/nova/scheduler/filter_scheduler.py", line 107, in
> schedule_run_instance |
> |                                      |     raise
> exception.NoValidHost(reason="")
>
>                |
> |                                      | ', u'created':
> u'2013-12-02T21:12:51Z'}
>
>           |
> | flavor                               | m1.small (2)
>
>                                                                   |
> | hostId                               |
> 9118a70a83e5bcab35ef4c806b5608f38529fa88f34198f0f5e515b4
>
>                          |
> | id                                   |
> 585fe5f3-e3ab-46b5-adf6-1da0c112bda4
>
>                          |
> | image                                | cirros-0.3.0-i386
> (597221dd-5be5-4e56-8339-11adbe5653bf)
>
>        |
> | key_name                             | None
>
>                                                                   |
> | metadata                             | {}
>
>                                                                   |
> | name                                 | myvm
>
>                                                                   |
> | os-extended-volumes:volumes_attached | []
>
>                                                                   |
> | private network                      | 10.4.128.2
>
>                                                                   |
> | security_groups                      | default
>
>                                                                   |
> | status                               | ERROR
>
>                                                                   |
> | tenant_id                            |
> 2d526ede707349f2813b06bf1b6e4a0c
>
>                          |
> | updated                              | 2013-12-02T21:12:51Z
>
>                                                                   |
> | user_id                              |
> fe775b8220d5436380f0de7ec61cfae3
>
>                          |
>
> +--------------------------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
> -bash-4.2$
>
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-- 
Lorin Hochstein
Lead Architect - Cloud Services
Nimbis Services, Inc.
www.nimbisservices.com
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