From 8fe7c11617e86f1c89e34cae096d6b290ea06ce3 Mon Sep 17 00:00:00 2001
From: Ricard Illa <ricard@trkkn.com>
Date: Sun, 30 Oct 2022 15:53:04 +0100
Subject: [PATCH] k3s role

---
 roles/k3s/files/init.d/k3s | 28 +++++++++++++++
 roles/k3s/tasks/main.yml   | 70 ++++++++++++++++++++++++++++++++++++++
 roles/k3s/vars/main.yml    | 29 ++++++++++++++++
 3 files changed, 127 insertions(+)
 create mode 100755 roles/k3s/files/init.d/k3s
 create mode 100644 roles/k3s/tasks/main.yml
 create mode 100644 roles/k3s/vars/main.yml

diff --git a/roles/k3s/files/init.d/k3s b/roles/k3s/files/init.d/k3s
new file mode 100755
index 0000000..fc7f120
--- /dev/null
+++ b/roles/k3s/files/init.d/k3s
@@ -0,0 +1,28 @@
+#!/sbin/openrc-run
+
+depend() {
+    after network-online
+    want cgroups
+}
+
+start_pre() {
+    rm -f /tmp/k3s.*
+}
+
+supervisor=supervise-daemon
+name=k3s
+command="/usr/local/bin/k3s"
+command_args="server \
+    >>/var/log/k3s.log 2>&1"
+
+output_log=/var/log/k3s.log
+error_log=/var/log/k3s.log
+
+pidfile="/var/run/k3s.pid"
+respawn_delay=5
+respawn_max=0
+
+set -o allexport
+if [ -f /etc/environment ]; then source /etc/environment; fi
+if [ -f /etc/rancher/k3s/k3s.env ]; then source /etc/rancher/k3s/k3s.env; fi
+set +o allexport
diff --git a/roles/k3s/tasks/main.yml b/roles/k3s/tasks/main.yml
new file mode 100644
index 0000000..368deb8
--- /dev/null
+++ b/roles/k3s/tasks/main.yml
@@ -0,0 +1,70 @@
+---
+
+- name: set k3s download suffix
+  set_fact:
+    k3s_suffix: "{{ k3s_suffix_lookup[ansible_architecture] }}"
+
+- name: download k3s binary
+  get_url:
+    url: "{{ k3s_download_base_url }}/k3s{{ k3s_suffix }}"
+    dest: /usr/local/bin/k3s
+    checksum: "sha256:{{ k3s_download_base_url }}/sha256sum{{ k3s_suffix }}.txt"
+    mode: '0755'
+
+- name: create k3s symlinks
+  file:
+    state: link
+    src: /usr/local/bin/k3s
+    dest: "/usr/local/bin/{{ item }}"
+  loop:
+    - kubectl
+    - crictl
+    - ctr
+
+- name: create /etc/rancher/k3s directory
+  file:
+    path: /etc/rancher/k3s
+    state: directory
+
+- name: create k3s.env
+  file:
+    state: touch
+    path: /etc/rancher/k3s/k3s.env
+    mode: '0600'
+    modification_time: preserve
+    access_time: preserve
+
+- name: copy service file
+  copy:
+    src: init.d/k3s
+    dest: /etc/init.d
+    mode: '0755'
+  when: ansible_distribution == "Alpine"
+
+- name: enable and start k3s
+  service:
+    name: k3s
+    state: started
+    enabled: true
+  when: ansible_distribution == "Alpine"
+
+- name: add cgroup options cmdline.txt
+  replace:
+    path: /media/mmcblk0p1/cmdline.txt
+    regexp: '^([\w](?!.*\b{{ item }}\b).*)$'
+    replace: '\1 {{ item }}'
+  loop:
+    - "cgroup_memory=1"
+    - "cgroup_enable=memory"
+    - "cgroup_enable=cpuset"
+
+- name: add k3s files to lbu
+  lbu:
+    include:
+      - /usr/local/bin/k3s
+      - /usr/local/bin/kubectl
+      - /usr/local/bin/crictl
+      - /usr/local/bin/ctr
+      - /etc/rancher/k3s/k3s.env
+      - /etc/init.d/k3s
+  when: ansible_distribution == "Alpine" and alpine_mode in ["diskless", "data"]
diff --git a/roles/k3s/vars/main.yml b/roles/k3s/vars/main.yml
new file mode 100644
index 0000000..d314f3a
--- /dev/null
+++ b/roles/k3s/vars/main.yml
@@ -0,0 +1,29 @@
+---
+
+# The version for a given channel can be found with
+#
+# ```sh
+# CHANNEL_URL=${CHANNEL_URL:-'https://update.k3s.io/v1-release/channels'}
+# CHANNEL=${CHANNEL:-'stable'}
+# curl \
+#     --write-out '%{url_effective}' \
+#     --location \
+#     --silent \
+#     --show-error \
+#     "${CHANNEL_URL}/${CHANNEL}" \
+#     -o /dev/null |
+#     sed -e 's|.*/||'
+# ```
+k3s_version: v1.24.6+k3s1
+
+k3s_suffix_lookup:
+  amd64: ""
+  x86_64: ""
+  arm64: "-arm64"
+  aarch64: "-arm64"
+  armv7l: "-armhf"  # any other arm* should be `-armhf` too
+  s390x: "-s390x"
+
+k3s_releases_url: "https://github.com/k3s-io/k3s/releases/download"
+
+k3s_download_base_url: "{{ k3s_releases_url }}/{{ k3s_version }}"