From 057b3bfc075946934c5237b7c1f6323335963924 Mon Sep 17 00:00:00 2001
From: Assaf Sapir <me@ass.af>
Date: Wed, 8 Nov 2023 20:31:51 +0200
Subject: [PATCH] Add archlinux (aarch64) support (#146)

* Add archlinux (aarch64) support

Signed-off-by: Assaf Sapir <meijin007@gmail.com>
---
 README.md                                    |  1 +
 roles/prereq/tasks/main.yml                  |  6 +++---
 roles/raspberrypi/tasks/main.yml             |  8 ++++++++
 roles/raspberrypi/tasks/prereq/Archlinux.yml | 14 ++++++++++++++
 4 files changed, 26 insertions(+), 3 deletions(-)
 create mode 100644 roles/raspberrypi/tasks/prereq/Archlinux.yml

diff --git a/README.md b/README.md
index 6f3286d..672753a 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@ Build a Kubernetes cluster using Ansible with k3s. The goal is easily install a
 - [X] Debian
 - [X] Ubuntu
 - [X] CentOS
+- [X] ArchLinux
 
 on processor architecture:
 
diff --git a/roles/prereq/tasks/main.yml b/roles/prereq/tasks/main.yml
index 1a70225..f6b7416 100644
--- a/roles/prereq/tasks/main.yml
+++ b/roles/prereq/tasks/main.yml
@@ -24,13 +24,13 @@
     content: "br_netfilter"
     dest: /etc/modules-load.d/br_netfilter.conf
     mode: "u=rw,g=,o="
-  when: ansible_distribution in ['CentOS', 'Red Hat Enterprise Linux','RedHat']
+  when: ansible_distribution in ['CentOS', 'Red Hat Enterprise Linux', 'RedHat', 'Archlinux']
 
 - name: Load br_netfilter
   community.general.modprobe:
     name: br_netfilter
     state: present
-  when: ansible_distribution in ['CentOS', 'Red Hat Enterprise Linux','RedHat']
+  when: ansible_distribution in ['CentOS', 'Red Hat Enterprise Linux', 'RedHat', 'Archlinux']
 
 - name: Set bridge-nf-call-iptables (just to be sure)
   ansible.posix.sysctl:
@@ -38,7 +38,7 @@
     value: "1"
     state: present
     reload: true
-  when: ansible_distribution in ['CentOS', 'Red Hat Enterprise Linux','RedHat']
+  when: ansible_distribution in ['CentOS', 'Red Hat Enterprise Linux', 'RedHat', 'Archlinux']
   loop:
     - net.bridge.bridge-nf-call-iptables
     - net.bridge.bridge-nf-call-ip6tables
diff --git a/roles/raspberrypi/tasks/main.yml b/roles/raspberrypi/tasks/main.yml
index d523307..5351507 100644
--- a/roles/raspberrypi/tasks/main.yml
+++ b/roles/raspberrypi/tasks/main.yml
@@ -33,6 +33,14 @@
     ( ansible_facts.lsb.id|default("") == "Debian" or
       ansible_facts.lsb.description|default("") is match("Debian") )
 
+- name: Set detected_distribution to ArchLinux (ARM64)
+  set_fact:
+    detected_distribution: Archlinux
+  when:
+    - ansible_facts.architecture is search("aarch64")
+    - raspberry_pi|default(false)
+    - ansible_facts.os_family is match("Archlinux")
+
 - name: Set detected_distribution_major_version
   ansible.builtin.set_fact:
     detected_distribution_major_version: "{{ ansible_facts.lsb.major_release }}"
diff --git a/roles/raspberrypi/tasks/prereq/Archlinux.yml b/roles/raspberrypi/tasks/prereq/Archlinux.yml
new file mode 100644
index 0000000..8251abb
--- /dev/null
+++ b/roles/raspberrypi/tasks/prereq/Archlinux.yml
@@ -0,0 +1,14 @@
+---
+- name: Enable cgroup via boot commandline if not already enabled for Archlinux
+  lineinfile:
+    path: /boot/boot.txt
+    search_string: setenv bootargs console=ttyS1,115200 console=tty0 root=PARTUUID=${uuid} rw rootwait smsc95xx.macaddr="${usbethaddr}"
+    line: setenv bootargs console=ttyS1,115200 console=tty0 root=PARTUUID=${uuid} rw rootwait smsc95xx.macaddr="${usbethaddr}" cgroup_enable=cpuset cgroup_memory=1 cgroup_enable=memory
+  register: kernel_cmdline_cgroup
+
+- name: Create
+  shell: ./mkscr
+  args:
+    chdir: /boot
+  notify: reboot
+  when: kernel_cmdline_cgroup.changed