Add k3s ansible

ansible/roles/k3s/tasks/clients.yml

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+---
+- name: template k3s server systemd
+  template:
+    src: templates/k3s.service.j2
+    dest: /etc/systemd/system/k3s.service
+    owner: root
+    group: root
+    mode: 0644
+
+- name: enable and start k3s
+  systemd:
+    daemon_reload: yes
+    enabled: yes
+    name: k3s
+    state: started
+...

ansible/roles/k3s/tasks/get_k3s.yml

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+---
+- name: check k3s version
+  shell:
+    cmd: "k3s --version | grep k3s | cut -d' ' -f3"
+  args:
+    executable: /bin/bash
+  changed_when: False
+  register: installed_k3s_version
+  check_mode: False
+
+- name: get k3s
+  get_url:
+    url: "https://github.com/k3s-io/k3s/releases/download/{{ k3s_version }}/k3s-arm64"
+    dest: /usr/local/bin/k3s
+    mode: 0755
+    owner: root
+    group: root
+  when: installed_k3s_version.stdout != k3s_version
+
+- name: link k3s
+  file:
+    src: /usr/local/bin/k3s
+    dest: /usr/local/bin/kubernetes
+    state: link
+...

ansible/roles/k3s/tasks/main.yml

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+---
+- include: get_k3s.yml
+- include: server.yml
+  when: k3s_role == "server"
+- include: clients.yml
+  when: k3s_role == "client"
+...

ansible/roles/k3s/tasks/server.yml

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+---
+- name: template k3s server systemd
+  template:
+    src: templates/k3s.service.j2
+    dest: /etc/systemd/system/k3s.service
+    owner: root
+    group: root
+    mode: 0644
+
+- name: enable and start k3s
+  systemd:
+    daemon_reload: yes
+    enabled: yes
+    name: k3s
+    state: started
+
+- name: get k3s token
+  slurp:
+    src: /var/lib/rancher/k3s/server/node-token
+  register: registered_k3s_node_token
+
+- name: set k3s token var
+  set_fact:
+    k3s_node_token: "{{ registered_k3s_node_token.content | b64decode | trim }}"
+...

ansible/roles/k3s/templates/k3s.service.j2

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+[Unit]
+Description=k3s
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+ExecReload=/bin/kill -HUP $MAINPID
+{% if k3s_role == 'server' %}
+ExecStart=/usr/local/bin/k3s server --write-kubeconfig-mode 644 --disable servicelb --disable traefik
+{% else %}
+ExecStart=/usr/local/bin/k3s agent --server https://hardtack1.minhas.io:6443 --token {{ hostvars['hardtack1.minhas.io'].k3s_node_token }}
+{% endif %}
+KillMode=process
+KillSignal=SIGINT
+LimitNOFILE=infinity
+LimitNPROC=infinity
+Restart=on-failure
+RestartSec=2
+StartLimitBurst=3
+TasksMax=infinity
+
+[Install]
+WantedBy=multi-user.target