# Creating the Bare Metal service resources from file

It is possible to create a set of resources using their descriptions in JSON or YAML format. It can be done in one of two ways:

1. Using OpenStackClient bare metal plugin CLI’s command `openstack baremetal create`:

       $ openstack -h baremetal create
       usage: openstack baremetal create [-h] <file> [<file> ...]

       Create resources from files

       positional arguments:
         <file>      File (.yaml or .json) containing descriptions of the
                     resources to create. Can be specified multiple times.

2. Programmatically using the Python API:

   `ironicclient.v1.create_resources.``create_resources`(client, filenames)

     Create resources using their JSON or YAML descriptions.

     Parameters:

     - client – an instance of ironic client;
     - filenames – a list of filenames containing JSON or YAML resources definitions.

     Raises: | ClientException if any operation during files processing/resource creation fails.

## File containing Resource Descriptions

The resources to be created can be described either in JSON or YAML. A file ending with `.json` is assumed to contain valid JSON, and a file ending with `.yaml` is assumed to contain valid YAML. Specifying a file with any other extension leads to an error.

The resources that can be created are chassis, nodes, port groups and ports. A chassis can contain nodes (and resources of nodes) definitions nested under `"nodes"` key. A node can contain port groups definitions nested under `"portgroups"`, and ports definitions under `"ports"` keys. Ports can be also nested under port groups in `"ports"` key.

The schema used to validate the supplied data is the following:

    {
        "$schema": "http://json-schema.org/draft-04/schema#",
        "description": "Schema for ironic resources file",
        "type": "object",
        "properties": {
            "chassis": {
                "type": "array",
                "items": {
                    "type": "object"
                }
            },
            "nodes": {
                "type": "array",
                "items": {
                    "type": "object"
                }
            }
        },
        "additionalProperties": False
    }

More detailed description of the creation process can be seen in the following sections.

## Examples

Here is an example of the JSON file that can be passed to the `create` command:

    {
        "chassis": [
            {
                "description": "chassis 3 in row 23",
                "nodes": [
                    {
                        "name": "node-3",
                        "driver": "agent_ipmitool",
                        "portgroups": [
                            {
                                "name": "switch.cz7882.ports.1-2",
                                "ports": [
                                    {
                                        "address": "ff:00:00:00:00:00"
                                    },
                                    {
                                        "address": "ff:00:00:00:00:01"
                                    }
                                ]
                            }
                        ],
                        "ports": [
                            {
                                "address": "00:00:00:00:00:02"
                            },
                            {
                                "address": "00:00:00:00:00:03"
                            }
                        ]
                    },
                    {
                        "name": "node-4",
                        "driver": "agent_ipmitool",
                        "ports": [
                            {
                                "address": "00:00:00:00:00:04"
                            },
                            {
                                "address": "00:00:00:00:00:01"
                            }
                        ]
                    }
                ]
            }
        ],
        "nodes": [
            {
                "name": "node-5",
                "driver": "pxe_ipmitool",
                "chassis_uuid": "74d93e6e-7384-4994-a614-fd7b399b0785",
                "ports": [
                    {
                        "address": "00:00:00:00:00:00"
                    }
                ]
            },
            {
                "name": "node-6",
                "driver": "pxe_ipmitool"
            }
        ]
    }

## Creation Process

1. The client deserializes the files’ contents and validates that the top-level dictionary in each of them contains only “chassis” and/or “nodes” keys, and their values are lists. The creation process is aborted if any failure is encountered in this stage. The rest of the validation is done by the ironic-api service.
2. Each resource is created via issuing a POST request (with the resource’s dictionary representation in the body) to the ironic-api service. In the case of nested resources (`"nodes"` key inside chassis, `"portgroups"` key inside nodes, `"ports"` key inside nodes or portgroups), the top-level resource is created first, followed by the sub-resources. For example, if a chassis contains a list of nodes, the chassis will be created first followed by the creation of each node. The same is true for ports and port groups described within nodes.
3. If a resource could not be created, it does not stop the entire process. Any sub-resources of the failed resource will not be created, but otherwise, the rest of the resources will be created if possible. Any failed resources will be mentioned in the response.

this page last updated: 2020-04-10 14:03:55

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