Dell-Omnia-Clusters-HPC-AI/roles/hostname_validation/tasks/validate_hostname.yml

# Copyright 2022 Dell Inc. or its subsidiaries. All Rights Reserved.
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#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
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#      http://www.apache.org/licenses/LICENSE-2.0
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---

- name: Fetch the hostname
  command: hostname -s
  register: machine_hostname
  changed_when: false

- name: Verify the hostname is not blank in hostname
  fail:
    msg: " {{ hostname_blank_msg }}"
  when: machine_hostname.stdout | length < 1

- name: Validate the host name
  assert:
    that:
      - machine_hostname.stdout is regex(("^(([a-z]|[a-z][a-z0-9\-]*[a-z0-9])\.)*([a-z]|[a-z][a-z0-9\-]*[a-z0-9])$"))
      - machine_hostname.stdout != "localhost"
    success_msg: "{{ server_hostname_success }}"
    fail_msg: "{{ server_hostname_fail }}"

- name: Fetch the domain name
  command: hostname -d
  register: domain_name_set
  changed_when: false
  failed_when: false

- name: Verify the domain name is not blank in hostname
  fail:
    msg: " {{ domain_name_blank_msg }}"
  when: domain_name_set.stdout | length < 1

- name: Set fact for the domain name in hostname
  set_fact:
    ms_domain_name: "{{ domain_name_set.stdout }}"

- name: Validate the domain name set on the host
  assert:
    that:
      - hostvars['127.0.0.1']['domain_name'] == ms_domain_name
    success_msg: "{{ server_domain_name_success }}"
    fail_msg: "{{ server_domain_name_fail }}"