Dynamic Inventory Generation for PXE -Mapping

common/library/module_utils/input_validation/common_utils/en_us_validation_msg.py

@@ -171,6 +171,11 @@
                                  "not a directory.")
 PXE_MAPPING_FILE_EXT_FAIL_MSG = ("File path is invalid. Please ensure that the file ends with "
                                  ".csv extension")
+PXE_MAPPING_AARCH64_LOCAL_PATH_MSG = ("aarch64 nodes are present in pxe_mapping_file.csv but "
+                                      "local share path selected for omnia core container deployment. "
+                                      "aarch64 nodes require NFS share path. "
+                                      "Please redeploy omnia core container with NFS share path option or remove aarch64 nodes "
+                                      "from pxe_mapping_file.csv.")
 CLUSTER_OS_FAIL_MSG = "Cluster OS must be 'rhel' for RHEL Omnia Infrastructure Manager"
 
 # local_repo.yml

common/library/module_utils/input_validation/validation_flows/provision_validation.py

@@ -733,6 +733,63 @@ def validate_admin_ips_against_network_spec(pxe_mapping_file_path, network_spec_
 
     return errors
 
+def validate_aarch64_local_path_compatibility(pxe_mapping_file_path, input_file_path, omnia_base_dir, project_name):
+    """
+    Validates that aarch64 nodes are not present when using local share path.
+
+    Args:
+        pxe_mapping_file_path (str): Path to the PXE mapping file.
+        input_file_path (str): Path to the input file.
+        omnia_base_dir (str): Base directory of Omnia.
+        project_name (str): Name of the project.
+
+    Raises:
+        ValueError: If aarch64 nodes are found with local share path configuration.
+    """
+    # Check metadata file for omnia_Share_option
+    metadata_path = "/opt/omnia/.data/oim_metadata.yml"
+
+    # Default to Local if metadata doesn't exist or omnia_Share_option is not set
+    share_option = "Local"
+
+    if os.path.isfile(metadata_path):
+        try:
+            with open(metadata_path, "r", encoding="utf-8") as f:
+                metadata = yaml.safe_load(f) or {}
+
+            # Check omnia_share_option in metadata
+            share_option = metadata.get("omnia_share_option", "Local")
+        except Exception:
+            # If there's an error reading metadata, assume Local
+            pass
+
+    # If share option is NFS, no need to check further
+    if share_option.lower() == "nfs":
+        return
+
+    # Check for aarch64 nodes in PXE mapping file
+    with open(pxe_mapping_file_path, "r", encoding="utf-8") as fh:
+        raw_lines = fh.readlines()
+
+    non_comment_lines = [ln for ln in raw_lines if ln.strip()]
+    reader = csv.DictReader(non_comment_lines)
+
+    fieldname_map = {fn.strip().upper(): fn for fn in reader.fieldnames}
+    fg_col = fieldname_map.get("FUNCTIONAL_GROUP_NAME")
+
+    if not fg_col:
+        return
+
+    aarch64_found = False
+    for row in reader:
+        fg_name = row.get(fg_col, "").strip() if row.get(fg_col) else ""
+        if fg_name and "aarch64" in fg_name.lower():
+            aarch64_found = True
+            break
+
+    if aarch64_found:
+        raise ValueError(en_us_validation_msg.PXE_MAPPING_AARCH64_LOCAL_PATH_MSG)
+
 def validate_provision_config(
     input_file_path, data, logger, module, omnia_base_dir, module_utils_base, project_name
 ):
@@ -811,6 +868,7 @@ def validate_provision_config(
             validate_functional_groups_separation(pxe_mapping_file_path)
             validate_parent_service_tag_hierarchy(pxe_mapping_file_path)
             validate_slurm_login_compiler_prefix(pxe_mapping_file_path)
+            validate_aarch64_local_path_compatibility(pxe_mapping_file_path, input_file_path, omnia_base_dir, project_name)
 
             # Validate ADMIN_IPs against network_spec.yml ranges
             network_spec_path = create_file_path(input_file_path, file_names["network_spec"])

discovery/roles/discovery_validations/tasks/generate_bmc_inventory.yml

@@ -0,0 +1,41 @@
+# Copyright 2026 Dell Inc. or its subsidiaries. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+---
+
+- name: Create provision directory if it doesn't exist
+  ansible.builtin.file:
+    path: "{{ provision_dir_path }}"
+    state: directory
+    mode: "{{ provision_dir_mode }}"
+
+- name: Read PXE mapping file
+  ansible.builtin.read_csv:
+    path: "{{ pxe_mapping_file_path }}"
+  register: pxe_mapping_data
+
+- name: Extract BMC IPs from PXE mapping file
+  ansible.builtin.set_fact:
+    bmc_ip_list: "{{ pxe_mapping_data.list | map(attribute='BMC_IP') | list }}"
+
+- name: Generate BMC inventory file
+  ansible.builtin.template:
+    src: bmc_inventory.j2
+    dest: "{{ bmc_inventory_path }}"
+    mode: "{{ bmc_inventory_file_mode }}"
+  when: bmc_ip_list | length > 0
+
+- name: Display BMC inventory generation status
+  ansible.builtin.debug:
+    msg: "{{ bmc_inventory_generated_msg }}"
+  when: bmc_ip_list | length > 0

discovery/roles/discovery_validations/tasks/main.yml

@@ -42,3 +42,7 @@
   when:
     - idrac_telemetry_support | lower == 'true' | default('false') or
       ldms_support | default('false')
+
+- name: Generate BMC inventory from PXE mapping file
+  ansible.builtin.include_tasks: generate_bmc_inventory.yml
+  when: mapping_file_status

discovery/roles/discovery_validations/templates/bmc_inventory.j2

@@ -0,0 +1,9 @@
+# BMC Inventory File
+# Auto-generated from PXE mapping file
+# Path: {{ pxe_mapping_file_path }}
+# Generated: {{ ansible_date_time.iso8601 }}
+
+[bmc]
+{% for bmc_ip in bmc_ip_list %}
+{{ bmc_ip }}
+{% endfor %}

discovery/roles/discovery_validations/vars/main.yml

@@ -101,3 +101,11 @@ openldap_container_missing_msg: "{{ '\x1b[31m' }}\
   For more information, refer to the Omnia documentation on OpenLDAP configuration.\n\
   ==================================================================================\
   {{ '\x1b[0m' }}"
+
+# Usage: generate_bmc_inventory.yml
+pxe_mapping_file_path: "{{ hostvars['localhost']['input_project_dir'] }}/pxe_mapping_file.csv"
+bmc_inventory_path: "/opt/omnia/provision/bmc_inventory"
+provision_dir_path: "/opt/omnia/provision"
+provision_dir_mode: "0755"
+bmc_inventory_file_mode: "0644"
+bmc_inventory_generated_msg: "BMC inventory generated at {{ bmc_inventory_path }} with {{ bmc_ip_list | length }} BMC IP(s)"

utils/roles/idrac_pxe_boot/tasks/pre_checks.yml

@@ -0,0 +1,43 @@
+# Copyright 2026 Dell Inc. or its subsidiaries. All Rights Reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+---
+
+- name: Check if custom inventory was provided
+  ansible.builtin.set_fact:
+    custom_inventory_provided: "{{ groups['bmc'] is defined and groups['bmc'] | length | int > 0 }}"
+
+- name: Use auto-generated BMC inventory if no custom inventory provided
+  when: not custom_inventory_provided
+  block:
+    - name: Check if auto-generated BMC inventory exists
+      ansible.builtin.stat:
+        path: "{{ bmc_inventory_path }}"
+      register: bmc_inventory_stat
+
+    - name: Fail if no BMC inventory available
+      ansible.builtin.fail:
+        msg: "{{ bmc_inventory_not_found_msg }}"
+      when: not bmc_inventory_stat.stat.exists
+
+    - name: Add auto-generated BMC inventory to in-memory inventory
+      ansible.builtin.add_host:
+        name: "{{ item }}"
+        groups: bmc
+      loop: "{{ lookup('file', bmc_inventory_path).split('\n') | select('match', '^[0-9]+\\.[0-9]+\\.[0-9]+\\.[0-9]+$') | list }}"
+      when: bmc_inventory_stat.stat.exists
+
+- name: Validate BMC group has hosts
+  ansible.builtin.fail:
+    msg: "{{ bmc_no_hosts_msg }}"
+  when: groups['bmc'] is not defined or groups['bmc'] | length | int == 0

utils/roles/idrac_pxe_boot/vars/main.yml

@@ -33,3 +33,16 @@ provision_os_msg: "OS provisioning is initiated. Wait for installation to comple
 pxe_provisioning_fail_msg: "OS booting using PXE failed. This could be due to outdated NIC firmware. Re-run set_pxe_boot.yml after fixing the issue"
 bmc_validation_fail_msg: "Failed. bmc group in inventory must have atleast one bmc ip."
 unreachable_idrac_msg: "iDRAC is unreachable. pxe boot might be set. Please check the host reboot status manually"
+
+# Usage: pre_checks.yml
+bmc_inventory_path: "/opt/omnia/provision/bmc_inventory"
+bmc_inventory_not_found_msg: |
+  Failed. No BMC inventory found.
+
+  Please either:
+  1. Provide a custom inventory file with 'bmc' group:
+     ansible-playbook set_pxe_boot.yml -i <your_inventory_file>
+
+  2. Or run discovery.yml first to auto-generate BMC inventory from PXE mapping file at:
+     {{ bmc_inventory_path }}
+bmc_no_hosts_msg: "Failed. 'bmc' group has no hosts. Please check your inventory file or PXE mapping file."

utils/set_pxe_boot.yml

@@ -27,16 +27,16 @@
 #    boot image must be reachable by the target nodes once the iDRAC
 #    is set to PXE mode.
 # -------------------------------------------------------------------------
-- name: Validate BMC group exists in inventory
+
+- name: Validate and setup BMC inventory
   hosts: localhost
   connection: local
   gather_facts: false
   tasks:
-    - name: Check if bmc group exists in inventory
-      ansible.builtin.fail:
-        msg: "Failed. 'bmc' group not found in inventory or has no hosts.
-         Please ensure the inventory file contains a 'bmc' group with at least one BMC IP address."
-      when: groups['bmc'] is not defined or groups['bmc'] | length | int == 0
+    - name: Include pre-checks for BMC inventory validation
+      ansible.builtin.include_role:
+        name: idrac_pxe_boot
+        tasks_from: pre_checks
 
 - name: Set_fact for fetch omnia config credentials
   hosts: localhost