Support configuring credential-less deploy

Also deprecate the awkward way of passing the inspector discovery
parameters in favour of the standard (and documented) one.

Change-Id: I5966a20e4e7599eaea3eeac4f07ea3c0aa91c6c8
Story: #2007771
Task: #40379
Depends-On: https://review.opendev.org/#/c/735591/

playbooks/roles/bifrost-ironic-install/README.md

@@ -179,6 +179,13 @@ power_off_after_inspection: Boolean setting governing the behavior
                             Deployment without the need to reboot
                             the physical machine.
 
+enable_credential_less_deploy: Boolean setting that enables the experimental
+                               feature of deploying nodes without BMC
+                               credentials. Discovery (if enabled) will be
+                               configured to use the default hardware type
+                               "manual-management" and the "agent" power
+                               interface will be enabled.
+
 ### Hardware Inspection Support
 
 Bifrost also supports the installation of ironic-inspector in standalone

playbooks/roles/bifrost-ironic-install/defaults/main.yml

@@ -141,6 +141,8 @@ enabled_power_interfaces: ""
 
 default_resource_class: baremetal
 
+enable_credential_less_deploy: false
+
 # Extra pip packages to install with ironic
 # This should be a list of pip-installable references.
 # default: empty list
@@ -227,16 +229,20 @@ inspector_store_data_in_nginx: false
 # 'Swift' API endpoint.
 inspector_store_data_url: "http://localhost:{{ file_url_port }}"
 
-# Inspector defaults
+enable_inspector_discovery: true
+
+inspector_default_node_driver: "{{ 'manual-management' if enable_credential_less_deploy|bool else 'ipmi' }}"
+
+# Inspector defaults (deprecated in Victoria)
 inspector:
   discovery:
-    enabled: "{{ enable_inspector_discovery | default(true) }}"
+    enabled: "{{ enable_inspector_discovery }}"
-    default_node_driver: "{{ inspector_default_node_driver | default('ipmi')}}"
+    default_node_driver: "{{ inspector_default_node_driver }}"
 
 # If baremetal nodes should be turned off after inspection.
 # The inspector default is to turn off the baremetal node
 # power, this setting to false enables use of fast track mode.
-power_off_after_inspection: false
+power_off_after_inspection: "{{ not fast_track|bool }}"
 
 # We may not have packaged iPXE files on some distros, or may want to
 # download them on their own.

playbooks/roles/bifrost-ironic-install/tasks/hw_types.yml

@@ -11,6 +11,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 ---
+- name: "Fail if credential-less deploy is misconfigured"
+  fail:
+    msg: enable_credential_less_deploy requires fast_track and the "manual-management" hardware type
+  when:
+    - enable_credential_less_deploy | bool
+    - (not fast_track | bool or 'manual-management' not in enabled_hardware_types)
+
 - name: "Configure BIOS interfaces if required"
   set_fact:
     enabled_bios_interfaces: >-
@@ -42,4 +49,5 @@
       {%- if "ilo" in enabled_hardware_types -%},ilo{%- endif -%}
       {%- if "ipmi" in enabled_hardware_types -%},ipmitool{%- endif -%}
       {%- if "redfish" in enabled_hardware_types -%},redfish{%- endif -%}
+      {%- if enable_credential_less_deploy|bool -%},agent{%- endif -%}
   when: enabled_power_interfaces == ""

playbooks/roles/bifrost-ironic-install/templates/ironic.conf.j2

@@ -59,6 +59,7 @@ tftp_master_path = {{ ironic_tftp_master_path }}
 uefi_pxe_bootfile_name = {{ ipxe_efi_binary }}
 uefi_pxe_config_template = $pybasedir/drivers/modules/ipxe_config.template
 {% endif %}
+enable_netboot_fallback = true
 
 [deploy]
 http_url = http://{{ internal_ip }}:{{ file_url_port }}/

releasenotes/notes/agent-power-0773acb338ae4169.yaml

@@ -0,0 +1,9 @@
+---
+features:
+  - |
+    Adds support for configuring credential-less deploy via the new ``agent``
+    power interface and the ``manual-management`` hardware type.
+deprecations:
+  - |
+    Deprecates providing inspector discovery parameters via
+    ``inspector[discovery]``, use explicit variables instead.