patch undefined: Updated the DNS configuration in the resolv.conf.j2 template to include both the local host and the Ansible-managed DNS server.

Added a new line to the `resolv.conf.j2` template to specify the Ansible-managed DNS server (`{{ addc_ansible_host }}`). This ensures that the system uses both the local host and the managed DNS server for DNS resolution.

tasks/preparing.yml

@@ -0,0 +1,112 @@
+---
+#  Disable tools, such as resolvconf, that automatically update your /etc/resolv.conf DNS resolver configuration file
+- name: Stop and disable systemd-resolved if present
+  ansible.builtin.systemd:
+    name: systemd-resolved
+    enabled: false
+    state: stopped
+  when: ansible_facts.services['systemd-resolved.service'] is defined
+
+- name: Remove /etc/resolv.conf if it's a symlink to systemd-resolved
+  ansible.builtin.file:
+    path: /etc/resolv.conf
+    state: absent
+  when: "'/run/systemd/resolve' in ansible_facts.lsb.description | default('')"
+
+- name: Create static /etc/resolv.conf
+  ansible.builtin.copy:
+    dest: /etc/resolv.conf
+    content: |
+      nameserver {{ location_internal_dns }}
+      nameserver {{ location_external_dns }}
+    owner: root
+    group: root
+    mode: '0644'
+
+- name: Disable resolvconf package (if installed)
+  ansible.builtin.package:
+    name: resolvconf
+    state: absent
+
+- name: Disable DNS updates from NetworkManager (if present)
+  ansible.builtin.blockinfile:
+    path: /etc/NetworkManager/NetworkManager.conf
+    block: |
+      [main]
+      dns=none
+  notify: Restart NetworkManager
+  when: ansible_facts.services['NetworkManager.service'] is defined
+
+- name: Prevent dhclient from modifying resolv.conf (if present)
+  ansible.builtin.lineinfile:
+    path: /etc/dhcp/dhclient.conf
+    regexp: '^#?supersede domain-name-servers'
+    line: 'supersede domain-name-servers {{ location_internal_dns }}, {{ location_external_dns }};'
+    create: yes
+
+# Verify that the /etc/hosts file on the DC correctly resolves the fully-qualified domain name (FQDN) and short host name to the LAN IP address of the DC
+- name: Set /etc/hosts entry for Samba AD DC
+  ansible.builtin.lineinfile:
+    path: /etc/hosts
+    line: "{{ addc_ansible_host }} {{ addc_hostname | upper }}.{{ addc_tld }} {{ addc_hostname | upper }}"
+    state: present
+    create: yes
+
+- name: Ensure '127.0.0.1 localhost' is present and nothing else on that line
+  ansible.builtin.lineinfile:
+    path: /etc/hosts
+    regexp: '^127\.0\.0\.1\s+'
+    line: '127.0.0.1 localhost'
+    state: present
+
+# Remove any existing smb.conf file
+- name: Get compiled default smb.conf path from smbd
+  ansible.builtin.shell: smbd -b | grep CONFIGFILE | awk '{print $2}'
+  register: smb_conf_path
+  changed_when: false
+  failed_when: smb_conf_path.rc != 0
+
+- name: Remove smb.conf using discovered path
+  ansible.builtin.file:
+    path: "{{ smb_conf_path.stdout }}"
+    state: absent
+
+# Remove all Samba database files, such as *.tdb and *.ldb files
+- name: Get Samba directories from smbd -b
+  ansible.builtin.shell: smbd -b | egrep "LOCKDIR|STATEDIR|CACHEDIR|PRIVATE_DIR" | awk '{print $2}'
+  register: samba_dirs
+  changed_when: false
+  failed_when: samba_dirs.rc != 0
+
+- name: Filter existing directories
+  ansible.builtin.find:
+    paths: "{{ item }}"
+    file_type: directory
+    recurse: no
+  loop: "{{ samba_dirs.stdout_lines }}"
+  register: existing_dirs
+
+- name: Collect existing directories
+  ansible.builtin.set_fact:
+    valid_dirs: "{{ existing_dirs.results | selectattr('matched', '>', 0) | map(attribute='files') | sum(start=[]) | map(attribute='path') | list }}"
+
+- name: Find *.tdb and *.ldb files
+  ansible.builtin.find:
+    paths: "{{ item }}"
+    patterns: "*.tdb,*.ldb"
+    recurse: yes
+    use_regex: false
+  loop: "{{ valid_dirs }}"
+  register: db_files
+
+- name: Remove found tdb/ldb files
+  ansible.builtin.file:
+    path: "{{ item.path }}"
+    state: absent
+  loop: "{{ db_files.results | map(attribute='files') | sum(start=[]) }}"
+  when: item.path is defined
+
+- name: Report removed files
+  ansible.builtin.debug:
+    msg: "Removed: {{ item.path }}"
+  loop: "{{ db_files.results | map(attribute='files') | sum(start=[]) }}"