From 2708dfe3f20fb860541c9e14367b7fb67acbabbe Mon Sep 17 00:00:00 2001
From: "Dustin C. Hatch" <dustin@hatch.name>
Date: Sun, 10 Oct 2021 11:54:12 -0500
Subject: [PATCH] r/systemd-networkd: Role to configure networkd

*systemd-networkd* is (currently) my preferred way to manage network
interfaces on machines running Fedora.  The *systemd-networkd* role
provides a generic way to configure network links, devices, and
interfaces, using Ansible variables to generate network unit
configuration files.
---
 hosts.offline                               |  2 ++
 roles/systemd-networkd/defaults/main.yml    |  3 ++
 roles/systemd-networkd/handlers/main.yml    |  2 ++
 roles/systemd-networkd/tasks/main.yml       | 34 +++++++++++++++++++++
 roles/systemd-networkd/templates/network.j2 | 12 ++++++++
 systemd-networkd.yml                        |  6 ++++
 6 files changed, 59 insertions(+)
 create mode 100644 roles/systemd-networkd/defaults/main.yml
 create mode 100644 roles/systemd-networkd/handlers/main.yml
 create mode 100644 roles/systemd-networkd/tasks/main.yml
 create mode 100644 roles/systemd-networkd/templates/network.j2
 create mode 100644 systemd-networkd.yml

diff --git a/hosts.offline b/hosts.offline
index f8ee179..88ba727 100644
--- a/hosts.offline
+++ b/hosts.offline
@@ -20,6 +20,8 @@ koji0.pyrocufflink.blue
 [koji-web]
 koji0.pyrocufflink.blue
 
+[networkd]
+
 [pyrocufflink]
 koji0.pyrocufflink.blue
 taiga0.pyrocufflink.blue
diff --git a/roles/systemd-networkd/defaults/main.yml b/roles/systemd-networkd/defaults/main.yml
new file mode 100644
index 0000000..7829ac6
--- /dev/null
+++ b/roles/systemd-networkd/defaults/main.yml
@@ -0,0 +1,3 @@
+networkd_links: []
+networkd_devices: []
+networkd_networks: []
diff --git a/roles/systemd-networkd/handlers/main.yml b/roles/systemd-networkd/handlers/main.yml
new file mode 100644
index 0000000..1523d58
--- /dev/null
+++ b/roles/systemd-networkd/handlers/main.yml
@@ -0,0 +1,2 @@
+- name: reload networkd
+  command: networkctl reload
diff --git a/roles/systemd-networkd/tasks/main.yml b/roles/systemd-networkd/tasks/main.yml
new file mode 100644
index 0000000..d2761b4
--- /dev/null
+++ b/roles/systemd-networkd/tasks/main.yml
@@ -0,0 +1,34 @@
+- name: ensure systemd-networkd is installed
+  package:
+    name: systemd-networkd
+    state: present
+  tags:
+  - install
+
+- name: ensure systemd network configuration directory exists
+  file:
+    path: /etc/systemd/network
+    mode: '0755'
+    state: directory
+
+- name: ensure systemd network links are configured
+  template:
+    src: network.j2
+    dest: /etc/systemd/network/{{ item.name }}.link
+    mode: '0644'
+  loop: '{{ networkd_links }}'
+  notify: reload networkd
+- name: ensure systemd network devices are configured
+  template:
+    src: network.j2
+    dest: /etc/systemd/network/{{ item.name }}.netdev
+    mode: '0644'
+  loop: '{{ networkd_devices }}'
+  notify: reload networkd
+- name: ensure systemd networks are configured
+  template:
+    src: network.j2
+    dest: /etc/systemd/network/{{ item.name }}.network
+    mode: '0644'
+  loop: '{{ networkd_networks }}'
+  notify: reload networkd
diff --git a/roles/systemd-networkd/templates/network.j2 b/roles/systemd-networkd/templates/network.j2
new file mode 100644
index 0000000..a199b8d
--- /dev/null
+++ b/roles/systemd-networkd/templates/network.j2
@@ -0,0 +1,12 @@
+{% for section in item if section != "name" %}
+[{{ section }}]
+{% for key in item[section] %}
+{% if item[section][key] is not iterable or item[section][key] is string %}
+{{ key }}={{ item[section][key] }}
+{% else %}
+{% for value in item[section][key] %}
+{{ key }}={{ value }}
+{% endfor %}
+{% endif %}
+{% endfor %}
+{% endfor %}
diff --git a/systemd-networkd.yml b/systemd-networkd.yml
new file mode 100644
index 0000000..f5418ea
--- /dev/null
+++ b/systemd-networkd.yml
@@ -0,0 +1,6 @@
+- hosts: networkd
+  roles:
+  - role: systemd-networkd
+    tags:
+    - networkd
+    - netconfig