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Heat stack create is failing with No Valid host Error

asked 2014-11-14 05:03:38 -0500

Pradip gravatar image

updated 2014-11-14 08:23:46 -0500

larsks gravatar image


I am seeing an error in Heat engine:

heat.engine.resource [-] CREATE: Server "server1" [cba09fd3-6bcb-4426-a93e-87514f4b28ab] Stack "my_stack_1" [00444bfc-ce73-429a-bd29-301fef136c91]
heat.engine.resource Traceback (most recent call last):
heat.engine.resource   File "/opt/stack/heat/heat/engine/", line 453, in _action_recorder
heat.engine.resource     yield
heat.engine.resource   File "/opt/stack/heat/heat/engine/", line 523, in _do_action
heat.engine.resource     yield self.action_handler_task(action, args=handler_args)
heat.engine.resource   File "/opt/stack/heat/heat/engine/", line 311, in wrapper
heat.engine.resource     step = next(subtask)
heat.engine.resource   File "/opt/stack/heat/heat/engine/", line 497, in action_handler_task
heat.engine.resource     while not check(handler_data):
heat.engine.resource   File "/opt/stack/heat/heat/engine/resources/", line 562, in check_create_complete
heat.engine.resource     return self._check_active(server)
heat.engine.resource   File "/opt/stack/heat/heat/engine/resources/", line 581, in _check_active
heat.engine.resource     'code': fault.get('code', _('Unknown'))
heat.engine.resource ResourceInError: Went to status ERROR due to "Message: No valid host was found. There are not enough hosts available., Code: 500"
heat.engine.scheduler [-] Task stack_task from Stack "my_stack_1" [00444bfc-ce73-429a-bd29-301fef136c91] sleeping from (pid=24348) _sleep /opt/stack/heat/heat/engine/
heat.engine.scheduler [-] Task stack_task from Stack "my_stack_1" [00444bfc-ce73-429a-bd29-301fef136c91] running from (pid=24348) step /opt/stack/heat/heat/engine/
heat.engine.scheduler [-] Task resource_action running from (pid=24348) step /opt/stack/heat/heat/engine/
heat.engine.scheduler [-] Task resource_action complete from (pid=24348) step /opt/stack/heat/heat/engine/
heat.engine.stack [-] Stack CREATE FAILED (my_stack_1): Resource CREATE failed: ResourceInError: Went to status ERROR due to "Message: No valid host was found. There are not enough hosts available., Code: 500"

Here is my local.conf respective section:

## Enable Heat Orchestration service

## Images
# Use this image when creating test instances
# Use this image when working with Orchestration (Heat)

This is my template:

ubuntu@ubuntu:~/devstack$ cat my_templates/t1.yml
heat_template_version: 2013-05-23

description: Test Template

    type: string
    description: Image use to boot a server
    type: string
    description: Network ID for the server

    type: OS::Nova::Server
      name: "Test server"
      image: { get_param: ImageID }
      flavor: "m1.small"
      - network: { get_param: NetID }

    description: IP address of the server in the private network
    value: { get_attr: [ server1, first_address ] }

This is how I am running:

ubuntu@ubuntu:~/devstack$ nova net-list
| ID                                   | Label   | CIDR        |
| 1c2a4823-8f0a-4009-95c1-3863bc7d4dbf | private | |
ubuntu@ubuntu:~/devstack$ heat stack-create -f my_templates/t1.yml -P "ImageID=F17-x86_64-cfntools;NetID=1c2a4823-8f0a-4009-95c1-3863bc7d4dbf" my_stack_1
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answered 2014-11-14 08:26:23 -0500

larsks gravatar image

"No valid host" is an error from Nova, not from Heat. It indicates that Nova was unable to find a suitable hypervisor on which to schedule your instance. This can mean that (a) you are requesting more resources (memory, disk, etc) than are currently available, or (b) that there is a configuration problem with Nova preventing it from seeing any available hypervisors.

You're using the m1.small flavor, so unless you are running OpenStack in a very constrained environment it seems unlikely that resource availability is an issue. Are you able to start an instance manually using nova boot? Does nova service-list show an available nova-compute service?

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Thanks. I can able to run it:

stack@localhost:~/devstack$ nova list +--------------------------------------+-------+--------+------------+-------------+------------------+ | ID | Name | Status | Task State | Power State | Networks | +----------------------

Pradip gravatar imagePradip ( 2014-11-15 09:27:32 -0500 )edit

Thank you, I solved the problem. The flavor exceeded the size of the VM disk.

Greetings and thanks

instructor_beeva gravatar imageinstructor_beeva ( 2016-12-14 13:28:51 -0500 )edit

answered 2014-12-18 05:26:42 -0500

If you don't have enough space or ram than it give same type of error. So please delete one of instance after that try to launch stack.

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I have the same issue (openstack mitaka) after deleting all instances and edit my image (Minimum Disk) I recreated the instance. New instance have got IP and power state is runnung

sibomarie gravatar imagesibomarie ( 2016-10-31 10:18:10 -0500 )edit

answered 2014-11-15 09:30:01 -0500

Pradip gravatar image

One problem I noticed is that in some nova logs, I saw this:

raise exception.NovaException(msg)\n\nNovaException: Failed to add interface: interface eth1 does not exist!\n\n\n']

My ifconfig shows I have only eth0 port, where in my OS local.conf has the following:

PUBLIC_INTERFACE=eth0 FLAT_INTERFACE=eth1 <------------ It's not correct.

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Asked: 2014-11-14 05:03:38 -0500

Seen: 7,063 times

Last updated: Nov 15 '14