From 0182fe51736e7610d4a63fe6767d08ffe5c5938c Mon Sep 17 00:00:00 2001
From: clyhtsuriva <aimeric@adjutor.xyz>
Date: Mon, 3 Mar 2025 21:20:59 +0100
Subject: ansible: add dynamic inventory & playbooks to install k3s hosts

bootstrap.yml will now be used to install any configuration on new
provisionned servers, based on tags given by the dynamic inventory
---
 ansible/roles/k8s/tasks/install_k3s_master.yml | 20 ++++++++++++++++++++
 ansible/roles/k8s/tasks/install_k3s_worker.yml | 19 +++++++++++++++++++
 ansible/roles/k8s/tasks/main.yml               |  8 ++++++++
 3 files changed, 47 insertions(+)
 create mode 100644 ansible/roles/k8s/tasks/install_k3s_master.yml
 create mode 100644 ansible/roles/k8s/tasks/install_k3s_worker.yml

(limited to 'ansible/roles/k8s/tasks')

diff --git a/ansible/roles/k8s/tasks/install_k3s_master.yml b/ansible/roles/k8s/tasks/install_k3s_master.yml
new file mode 100644
index 0000000..71d880e
--- /dev/null
+++ b/ansible/roles/k8s/tasks/install_k3s_master.yml
@@ -0,0 +1,20 @@
+---
+- name: Download k3s installer
+  ansible.builtin.get_url:
+    url: https://get.k3s.io
+    dest: /tmp/install_k3s.sh
+    mode: '0755'
+
+- name: Install k3s server
+  ansible.builtin.command: /tmp/install_k3s.sh server --cluster-init
+  become: true
+
+- name: Retrieve k3s token
+  ansible.builtin.slurp:
+    path: /var/lib/rancher/k3s/server/node-token
+  register: k3s_token_file
+
+- name: Set k3s token as a fact, for workers
+  ansible.builtin.set_fact:
+    k3s_token: "{{ k3s_token_file.content | b64decode }}"
+...
diff --git a/ansible/roles/k8s/tasks/install_k3s_worker.yml b/ansible/roles/k8s/tasks/install_k3s_worker.yml
new file mode 100644
index 0000000..ffe2af0
--- /dev/null
+++ b/ansible/roles/k8s/tasks/install_k3s_worker.yml
@@ -0,0 +1,19 @@
+---
+- name: Retrieve k3s token and master IP from master node
+  ansible.builtin.set_fact:
+    k3s_token: "{{ hostvars[groups['tag_k3s_master'][0]].k3s_token }}"
+    k3s_master_ip: "{{ hostvars[groups['tag_k3s_master'][0]].ansible_default_ipv4.address }}"
+
+- name: Download k3s installation script
+  ansible.builtin.get_url:
+    url: https://get.k3s.io
+    dest: /tmp/install_k3s.sh
+    mode: '0755'
+
+- name: Install k3s agent
+  ansible.builtin.command: >
+    /tmp/install_k3s.sh agent
+    --server https://{{ k3s_master_ip }}:6443
+    --token {{ k3s_token }}
+  become: true
+...
diff --git a/ansible/roles/k8s/tasks/main.yml b/ansible/roles/k8s/tasks/main.yml
index c784c7c..fb58c1b 100644
--- a/ansible/roles/k8s/tasks/main.yml
+++ b/ansible/roles/k8s/tasks/main.yml
@@ -1,4 +1,12 @@
 ---
 - name: Include UFW tasks
   ansible.builtin.include_tasks: ufw.yml
+
+- name: Install k3s on master nodes
+  ansible.builtin.include_tasks: install_k3s_master.yml
+  when: inventory_hostname in groups['tag_k3s_master']
+
+- name: Install k3s on worker nodes
+  ansible.builtin.include_tasks: install_k3s_worker.yml
+  when: inventory_hostname in groups['tag_k3s_worker']
 ...
-- 
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