add support to join node as worker only

linux/k3s/node/defaults/main.yml

@@ -3,3 +3,4 @@ k3s_bootstrap: false
 k3s_node_address: "{{ ipv4_address }}"
 k3s_master_address: "{{ hostvars[groups['linux_k3s_master'][0]]['ipv4_address'] }}"
 k3s_node_interface: "{{ ansible_interfaces.0 }}"
+k3s_control_plane: true

linux/k3s/node/tasks/main.yml

@@ -8,7 +8,12 @@
   become: yes
   when: ansible_distribution|lower == 'debian'
 
-- name: join node to cluster
+- name: join node to cluster control plane
   shell: "curl -sfL https://get.k3s.io | K3S_TOKEN={{ k3s_node_token }} sh -s - server --server https://{{ k3s_master_address }}:6443 --node-ip {{ k3s_node_address }} --flannel-iface {{ k3s_node_interface }} && sleep 5"
-  when: k3s_bootstrap
+  when: k3s_bootstrap and k3s_control_plane
+  throttle: 1
+
+- name: join node to cluster as worker node
+  shell: "curl -sfL https://get.k3s.io | K3S_TOKEN={{ k3s_node_token }} sh -s - agent --server https://{{ k3s_master_address }}:6443 --node-ip {{ k3s_node_address }} --flannel-iface {{ k3s_node_interface }} && sleep 5"
+  when: k3s_bootstrap and not k3s_control_plane
   throttle: 1