Add networkd configuration to server role

Update inventory with necessary networking settings

roles/server/tasks/main.yaml

@@ -4,3 +4,7 @@
 
 - name: Configure SSH server
   ansible.builtin.import_tasks: sshd.yaml
+
+- name: Configure network settings
+  when: skylab_networking is defined
+  ansible.builtin.include_tasks: networkd.yaml

roles/server/tasks/networkd.yaml

@@ -0,0 +1,99 @@
+---
+- name: Install systemd-networkd on Rocky
+  become: true
+  ansible.builtin.dnf:
+    name: systemd-networkd
+    state: present
+
+- name: Ensure network config directory exists
+  ansible.builtin.file:
+    path: /etc/systemd/network
+    state: directory
+    owner: root
+    group: root
+    mode: 0644
+
+- name: Create network files
+  become: true
+  ansible.builtin.template:
+    src: network.j2
+    dest: /etc/systemd/network/{{ item.key }}.network
+    mode: 0644
+    owner: root
+    group: "{{ ansible_user }}"
+  loop: "{{ skylab_networking.interfaces | dict2items }}"
+
+- name: Create netdev files
+  become: true
+  when: item.kind is defined
+  ansible.builtin.template:
+    src: netdev.j2
+    dest: /etc/systemd/network/{{ item.key }}.netdev
+    mode: 0644
+    owner: root
+    group: "{{ ansible_user }}"
+  loop: "{{ skylab_networking.interfaces | dict2items }}"
+
+- name: Fetch existing network config directory contents
+  become: true
+  changed_when: false
+  ansible.builtin.command:
+    cmd: /usr/bin/ls /etc/systemd/network
+  register: _network_config_dir_raw
+
+- name: Remove legacy network config files
+  become: true
+  when: item.strip().replace('.netdev', '').replace('.network', '') not in skylab_networking.interfaces
+  ansible.builtin.file:
+    path: /etc/systemd/network/{{ item }}
+    state: absent
+  loop: "{{ _network_config_dir_raw.stdout.split(' ') }}"
+
+- name: Configure fallback DNS
+  become: true
+  ansible.builtin.lineinfile:
+    path: /etc/systemd/resolved.conf
+    create: false
+    line: FallbackDNS=
+
+- name: Enable systemd-networkd
+  become: true
+  ansible.builtin.systemd:
+    name: "{{ item }}"
+    enabled: true
+  loop:
+    - systemd-networkd
+    - systemd-networkd-wait-online
+    - systemd-resolved
+
+- name: Disable NetworkManager
+  become: true
+  ansible.builtin.systemd:
+    name: "{{ item }}"
+    enabled: false
+  loop:
+    - NetworkManager
+    - NetworkManager-wait-online
+
+- name: Start systemd-resolved to enable symlink creation
+  become: true
+  ansible.builtin.systemd:
+    name: systemd-resolved
+    state: started
+
+- name: Link system resolv.conf to systemd-resolved
+  become: true
+  ansible.builtin.file:
+    dest: /etc/resolv.conf
+    src: /run/systemd/resolve/resolv.conf
+    state: link
+    force: true
+    setype: net_conf_t
+
+- name: Link systemd-resolved to multi-user target
+  become: true
+  ansible.builtin.file:
+    dest: /etc/systemd/system/multi-user.target.wants/systemd-resolved.service
+    src: /usr/lib/systemd/system/systemd-resolved.service
+    state: link
+    force: true