Troubleshooting a Failed Overcloud Deployment¶

If an Overcloud deployment has failed, the OpenStack clients and service log files can be used to troubleshoot the failed deployment. The following commands are all run on the Undercloud and assume a stackrc file has been sourced.

Identifying Failed Component¶

In most cases, Heat will show the failed overcloud stack when a deployment has failed:

$ heat stack-list

+--------------------------------------+------------+--------------------+----------------------+
| id                                   | stack_name | stack_status       | creation_time        |
+--------------------------------------+------------+--------------------+----------------------+
| 7e88af95-535c-4a55-b78d-2c3d9850d854 | overcloud  | CREATE_FAILED      | 2015-04-06T17:57:16Z |
+--------------------------------------+------------+--------------------+----------------------+

Occasionally, Heat is not even able to create the stack, so the heat stack-list output will be empty. If this is the case, observe the message that was printed to the terminal when openstack overcloud deploy or heat stack-create was run.

Next, there are a few layers on which the deployment can fail:

Orchestration (Heat and Nova services)
Bare metal provisioning (Ironic service)
Post-deploy configuration (Puppet)

As Ironic service is in the middle layer, you can use its shell to guess the failed layer. Issue openstack baremetal node list command to see all registered nodes and their current status, you will see something like:

+--------------------------------------+------+---------------+-------------+-----------------+-------------+
| UUID                                 | Name | Instance UUID | Power State | Provision State | Maintenance |
+--------------------------------------+------+---------------+-------------+-----------------+-------------+
| f1e26112-5fbd-4fc4-9612-ecce7a1d86aa | None | None          | power off   | available       | False       |
| f0b8c105-f1d7-4059-a9a3-b050c3340340 | None | None          | power off   | available       | False       |
+--------------------------------------+------+---------------+-------------+-----------------+-------------+

Pay close attention to Provision State and Maintenance columns in the resulting table.

If the command shows empty table or less nodes that you expect, or Maintenance is True, or Provision State is manageable or enroll, there was a problem during node enrolling and introspection.

You can check the actual cause using the following command:
```
openstack baremetal node show <UUID> -f value -c maintenance_reason
```
For example, Maintenance goes to True automatically, if wrong power credentials are provided.

Fix the cause of the failure, then move the node out of the maintenance mode:
```
openstack baremetal node maintenance unset <NODE UUID>
```
If Provision State is available then the problem occurred before bare metal deployment has even started. Proceed with Debugging Using Heat.
If Provision State is active and Power State is power on, then bare metal deployment has finished successfully, and problem happened during the post-deployment configuration step. Again, refer to Debugging Using Heat.
If Provision State is wait call-back, then bare metal deployment is not finished for this node yet. You may want to wait until the status changes.
If Provision State is error or deploy failed, then bare metal deployment has failed for this node. Look at the last_error field:
```
openstack baremetal node show <UUID> -f value -c last_error
```
If the error message is vague, you can use logs to clarify it, see ironic for details.

If you see wait timeout error, and node Power State is power on, then try to connect to the virtual console of the failed machine. Use virt-manager tool for virtual machines and vendor-specific virtual console (e.g. iDRAC for DELL) for bare metal machines.

Showing deployment failures¶

Deployment failures can be shown with the following command:

[stack@undercloud ]$ openstack overcloud failures --plan my-deployment

The command will show any errors encountered when running ansible-playbook to configure the overcloud during the config-download process. See TripleO config-download User’s Guide: Deploying with Ansible for more information.

Debugging Using Heat¶

Identifying the failed Heat resource

List all the stack resources to see which one failed.

$ heat resource-list overcloud

+-----------------------------------+-----------------------------------------------+---------------------------------------------------+-----------------+----------------------+
| resource_name                     | physical_resource_id                          | resource_type                                     | resource_status | updated_time         |
+-----------------------------------+-----------------------------------------------+---------------------------------------------------+-----------------+----------------------+
| BlockStorage                      | 9e40a1ee-96d3-4920-868d-683d3788e129          | OS::Heat::ResourceGroup                           | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| BlockStorageAllNodesDeployment    | 2c453f6b-7378-44c8-a0ad-57de57d9c57f          | OS::Heat::StructuredDeployments                   | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| BlockStorageNodesPostDeployment   |                                               | OS::TripleO::BlockStoragePostDeployment           | INIT_COMPLETE   | 2015-04-06T21:15:20Z |
| CephClusterConfig                 | 1684e7a3-0e42-44fe-9db4-7543b742fbfc          | OS::TripleO::CephClusterConfig::SoftwareConfig    | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| CephStorage                       | 48b3460c-bf9a-4663-99fc-2b4fa01b8dc1          | OS::Heat::ResourceGroup                           | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| CephStorageAllNodesDeployment     | 76beb3a9-8327-4d2e-a206-efe12f1613fb          | OS::Heat::StructuredDeployments                   | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| CephStorageCephDeployment         | af8fb02a-5bc6-468c-8fac-fbe7e5b2c689          | OS::Heat::StructuredDeployments                   | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| CephStorageNodesPostDeployment    |                                               | OS::TripleO::CephStoragePostDeployment            | INIT_COMPLETE   | 2015-04-06T21:15:20Z |
| Compute                           | e5e6ec84-197f-4bf6-b8ac-eb11fe494cdf          | OS::Heat::ResourceGroup                           | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| ComputeAllNodesDeployment         | e6d44fbf-9683-4765-acbb-4a3d31c8fd48          | OS::Heat::StructuredDeployments                   | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| ControllerNodesPostDeployment     | e551e472-f2db-4468-b586-0374678d71a3          | OS::TripleO::ControllerPostDeployment             | CREATE_FAILED   | 2015-04-06T21:15:20Z |
| ComputeCephDeployment             | 673608d5-70d7-453a-ac78-7987bc2c0158          | OS::Heat::StructuredDeployments                   | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| ComputeNodesPostDeployment        | 1078e3e3-9f6f-48b9-8961-a30f44098856          | OS::TripleO::ComputePostDeployment                | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| ControlVirtualIP                  | 6402b396-84aa-4cf6-9849-305205755604          | OS::Neutron::Port                                 | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| Controller                        | ffc45352-9708-486d-81ac-3b60efa8e8b8          | OS::Heat::ResourceGroup                           | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| ControllerAllNodesDeployment      | f73c6e33-3dd2-46f1-9eca-0d2981a4a986          | OS::Heat::StructuredDeployments                   | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| ControllerBootstrapNodeConfig     | 01ce5b6a-794a-4828-bad9-49d5fbfd55bf          | OS::TripleO::BootstrapNode::SoftwareConfig        | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| ControllerBootstrapNodeDeployment | c963d53d-879b-4a41-a10a-9000ac9f02a1          | OS::Heat::StructuredDeployments                   | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| ControllerCephDeployment          | 2d4281df-31ea-4433-820d-984a6dca6eb1          | OS::Heat::StructuredDeployments                   | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| ControllerClusterConfig           | 719c0d30-a4b8-4f77-9ab6-b3c9759abeb3          | OS::Heat::StructuredConfig                        | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| ControllerClusterDeployment       | d929aa40-1b73-429e-81d5-aaf966fa6756          | OS::Heat::StructuredDeployments                   | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| ControllerSwiftDeployment         | cf28f9fe-025d-4eed-b3e5-3a5284a2aa60          | OS::Heat::StructuredDeployments                   | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| HeatAuthEncryptionKey             | overcloud-HeatAuthEncryptionKey-5uw6wo7kavnq  | OS::Heat::RandomString                            | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| MysqlClusterUniquePart            | overcloud-MysqlClusterUniquePart-vazyj2s4n2o5 | OS::Heat::RandomString                            | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| MysqlRootPassword                 | overcloud-MysqlRootPassword-nek2iky7zfdm      | OS::Heat::RandomString                            | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| ObjectStorage                     | 47327c98-533e-4cc2-b1f3-d8d0eedba822          | OS::Heat::ResourceGroup                           | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| ObjectStorageAllNodesDeployment   | 7bb691aa-fa93-4f10-833e-6edeccc61408          | OS::Heat::StructuredDeployments                   | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| ObjectStorageNodesPostDeployment  | d4d16f39-384a-4d6a-9719-1dd9b2d4ff09          | OS::TripleO::ObjectStoragePostDeployment          | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| ObjectStorageSwiftDeployment      | afc87385-8b40-4097-b529-2a5bc81c94c8          | OS::Heat::StructuredDeployments                   | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| PublicVirtualIP                   | 4dd92878-8f29-49d8-9d3d-bc0cd44d26a9          | OS::Neutron::Port                                 | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| RabbitCookie                      | overcloud-RabbitCookie-uthzbos3l66v           | OS::Heat::RandomString                            | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| SwiftDevicesAndProxyConfig        | e2141170-bb77-4509-b8bd-58447b2cd15f          | OS::TripleO::SwiftDevicesAndProxy::SoftwareConfig | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
| allNodesConfig                    | cbd42692-fffa-4527-a519-bd4014ebf0fb          | OS::TripleO::AllNodes::SoftwareConfig             | CREATE_COMPLETE | 2015-04-06T21:15:20Z |
+-----------------------------------+-----------------------------------------------+---------------------------------------------------+-----------------+----------------------+

In this example, notice how the ControllerNodesPostDeployment resource has failed. The *PostDeployment resources are the configuration that is applied to the deployed Overcloud nodes. When these resources have failed it indicates that something went wrong during the Overcloud node configuration, perhaps when Puppet was run.

Show the failed resource

$ heat resource-show overcloud ControllerNodesPostDeployment

+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| Property               | Value                                                                                                                                                               |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| attributes             | {}                                                                                                                                                                  |
| description            |                                                                                                                                                                     |
| links                  | http://192.168.24.1:8004/v1/cea2a0c78d2447bc9a0f7caa35c9224c/stacks/overcloud/ec3e3251-f949-4df9-92be-dbd37c6992a1/resources/ControllerNodesPostDeployment (self)      |
|                        | http://192.168.24.1:8004/v1/cea2a0c78d2447bc9a0f7caa35c9224c/stacks/overcloud/ec3e3251-f949-4df9-92be-dbd37c6992a1 (stack)                                             |
|                        | http://192.168.24.1:8004/v1/cea2a0c78d2447bc9a0f7caa35c9224c/stacks/overcloud-ControllerNodesPostDeployment-6kcqm5zuymqu/e551e472-f2db-4468-b586-0374678d71a3 (nested) |
| logical_resource_id    | ControllerNodesPostDeployment                                                                                                                                       |
| physical_resource_id   | e551e472-f2db-4468-b586-0374678d71a3                                                                                                                                |
| required_by            | BlockStorageNodesPostDeployment                                                                                                                                     |
|                        | CephStorageNodesPostDeployment                                                                                                                                      |
| resource_name          | ControllerNodesPostDeployment                                                                                                                                       |
| resource_status        | CREATE_FAILED                                                                                                                                                       |
| resource_status_reason | ResourceUnknownStatus: Resource failed - Unknown status FAILED due to "None"                                                                                        |
| resource_type          | OS::TripleO::ControllerPostDeployment                                                                                                                               |
| updated_time           | 2015-04-06T21:15:20Z                                                                                                                                                |
+------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------+

The resource-show doesn’t always show a clear reason why the resource failed. In these cases, logging into the Overcloud node is required to further troubleshoot the issue.

Logging into Overcloud nodes

Use the nova client to see the IP addresses of the Overcloud nodes.

$ nova list

+--------------------------------------+-------------------------------------------------------+--------+------------+-------------+---------------------+
| ID                                   | Name                                                  | Status | Task State | Power State | Networks            |
+--------------------------------------+-------------------------------------------------------+--------+------------+-------------+---------------------+
| 18014b02-b143-4ca2-aeb9-5553bec93cff | ov-4tvbtgpv7w-0-soqocxy2w4fr-NovaCompute-nlrxd3lgmmlt | ACTIVE | -          | Running     | ctlplane=192.168.24.13 |
| 96a57a46-1e48-4c66-adaa-342ee4e98972 | ov-rf4hby6sblk-0-iso3zlqmyzfe-Controller-xm2imjkzalhi | ACTIVE | -          | Running     | ctlplane=192.168.24.14 |
+--------------------------------------+-------------------------------------------------------+--------+------------+-------------+---------------------+

Login as the heat-admin user to one of the deployed nodes. In this example, since the ControllerNodesPostDeployment resource failed, login to the controller node. The heat-admin user has sudo access.

$ ssh heat-admin@192.168.24.14

While logged in to the controller node, examine the log for the os-collect-config log for a possible reason for the failure.

$ sudo journalctl -u os-collect-config

Failed Nova Server ResourceGroup Deployments

In some cases, Nova fails deploying the node in entirety. This situation would be indicated by a failed OS::Heat::ResourceGroup for one of the Overcloud role types such as Control or Compute.

Use nova to see the failure in this case.
```
$ nova list
$ nova show <server-id>
```
The most common error shown will reference the error message No valid host was found. Refer to No Valid Host Found Error below.

In other cases, look at the following log files for further troubleshooting:
```
/var/log/nova/*
/var/log/heat/*
/var/log/ironic/*
```
Using SOS

SOS is a set of tools that gathers information about system hardware and configuration. The information can then be used for diagnostic purposes and debugging. SOS is commonly used to help support technicians and developers.

SOS is useful on both the undercloud and overcloud. Install the sos package and then generate a report:
```
$ sudo sosreport --all-logs
```

No Valid Host Found Error¶

Sometimes /var/log/nova/nova-conductor.log contains the following error:

NoValidHost: No valid host was found. There are not enough hosts available.

“No valid host was found” means that the Nova Scheduler could not find a bare metal node suitable for booting the new instance.

This in turn usually means some mismatch between resources that Nova expects to find and resources that Ironic advertised to Nova.

Start with checking Ironic troubleshooting guide on this topic.

If you’re using advanced profile matching with multiple flavors, make sure you have enough nodes corresponding to each flavor/profile. Watch capabilities key in the output of

openstack baremetal node show <UUID> --fields properties

It should contain e.g. profile:compute for compute nodes.

Debugging OpenStack services¶

Since Pike release, TripleO now offers an easy way to enable per-service debug without relying on knowledge of the puppet interfaces. Each OpenStack service has now its own Debug parameter.

Operators who want to enable Debug everywhere will set Debug to true.
Operators who want to disable Debug everywhere will set Debug to false.
Operators who want to disable Debug everywhere except for Glance will set Debug to false and GlanceDebug to true.
Operators who want to enable Debug everywhere except for Glance will set Debug to true and GlanceDebug to false.

Glance was an example, but all OpenStack services are supported. You can find their Debug in the TripleO Heat Templates composable services.

It is also possible to toggle debug for services after deployment.