From 9c0bf190e2174b2d3006f2f4e418a399c4420003 Mon Sep 17 00:00:00 2001
From: Jeltz <tom.barthe+aurore@ens-paris-saclay.fr>
Date: Sun, 2 Jan 2022 16:30:59 +0100
Subject: [PATCH] Add systemd-networkd role

---
 roles/systemd_networkd/handlers/main.yml    | 20 ++++++++++++++
 roles/systemd_networkd/tasks/main.yml       | 30 +++++++++++++++++++++
 roles/systemd_networkd/templates/link.j2    |  7 +++++
 roles/systemd_networkd/templates/network.j2 | 17 ++++++++++++
 4 files changed, 74 insertions(+)
 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/link.j2
 create mode 100644 roles/systemd_networkd/templates/network.j2

diff --git a/roles/systemd_networkd/handlers/main.yml b/roles/systemd_networkd/handlers/main.yml
new file mode 100644
index 0000000..3733060
--- /dev/null
+++ b/roles/systemd_networkd/handlers/main.yml
@@ -0,0 +1,20 @@
+---
+- name: Update initramfs
+  command:
+    cmd: update-initramfs -u
+
+- name: Restart systemd-networkd
+  systemd:
+    name: systemd-networkd.service
+    state: restarted
+
+- name: Reboot required
+  file:
+    path: /var/run/reboot-required
+    state: touch
+    modification_time: preserve
+    access_time: preserve
+    owner: root
+    group: root
+    mode: u=rw,g=r,o=r
+...
diff --git a/roles/systemd_networkd/tasks/main.yml b/roles/systemd_networkd/tasks/main.yml
new file mode 100644
index 0000000..13327e2
--- /dev/null
+++ b/roles/systemd_networkd/tasks/main.yml
@@ -0,0 +1,30 @@
+---
+- name: Configure interfaces links
+  template:
+    src: link.j2
+    dest: "/etc/systemd/network/10-{{ item.key }}.link"
+    owner: root
+    group: systemd-network
+    mode: u=rw,g=r,o=
+  loop: "{{ networkd_interfaces | dict2items }}"
+  notify:
+    - Update initramfs
+    - Reboot required
+
+- name: Configure interfaces networks
+  template:
+    src: network.j2
+    dest: "/etc/systemd/network/10-{{ item.key }}.network"
+    owner: root
+    group: systemd-network
+    mode: u=rw,g=r,o=
+  loop: "{{ networkd_interfaces | dict2items }}"
+  notify:
+    - Restart systemd-networkd
+
+- name: Enable and start systemd-networkd
+  systemd:
+    name: systemd-networkd.service
+    enabled: true
+    state: started
+...
diff --git a/roles/systemd_networkd/templates/link.j2 b/roles/systemd_networkd/templates/link.j2
new file mode 100644
index 0000000..1f0b48a
--- /dev/null
+++ b/roles/systemd_networkd/templates/link.j2
@@ -0,0 +1,7 @@
+{{ ansible_managed | comment }}
+
+[Match]
+MACAddress={{ item.value.mac_addr }}
+
+[Link]
+Name={{ item.key }}
diff --git a/roles/systemd_networkd/templates/network.j2 b/roles/systemd_networkd/templates/network.j2
new file mode 100644
index 0000000..b0566a6
--- /dev/null
+++ b/roles/systemd_networkd/templates/network.j2
@@ -0,0 +1,17 @@
+{{ ansible_managed | comment }}
+
+[Match]
+Name={{ item.key }}
+
+{% if not (item.value.link_local | default(true)) %}
+[Network]
+LinkLocalAddressing=no
+{% endif %}
+
+{% for addr in item.value.ip_addrs | default([]) %}
+[Address]
+Address={{ addr }}
+{% endfor %}
+
+[FairQueueingControlledDelay]
+Parent=root