Prepare for HA control plane

playbooks/kubernetes/Vagrantfile

@@ -1,6 +1,6 @@
 IMAGE_NAME = "bento/ubuntu-22.04"
-CONTROLPLANE_IP = "192.168.56.11"
+CONTROL_PLANES = 1
-NODES = 1
+NODES = 0
 
 Vagrant.configure("2") do |config|
     config.ssh.insert_key = false
@@ -10,19 +10,21 @@ Vagrant.configure("2") do |config|
         v.cpus = 2
     end
 
-    config.vm.define "controlplane" do |master|
+    (1..CONTROL_PLANES).each do |i|
-        master.vm.box = IMAGE_NAME
+        config.vm.define "control-plane-#{i}" do |control_plane|
-        master.vm.network "private_network", ip: CONTROLPLANE_IP
+            control_plane.vm.box = IMAGE_NAME
-        master.vm.hostname = "controlplane"
+            control_plane.vm.network "private_network", ip: "192.168.56.#{10 + i}"
-        master.vm.provision "ansible" do |ansible|
+            control_plane.vm.hostname = "control-plane-#{i}"
+            control_plane.vm.provision "ansible" do |ansible|
                 ansible.playbook = "playbook.yaml"
                 ansible.extra_vars = {
                     cluster_name: "gerar",
-                node_ip: CONTROLPLANE_IP,
+                    node_ip: "192.168.56.#{10 + i}",
-                is_controlplane: true,
+                    is_control_plane: true,
                 }
             end
         end
+    end
 
     (1..NODES).each do |i|
         config.vm.define "node-#{i}" do |node|
@@ -34,8 +36,8 @@ Vagrant.configure("2") do |config|
                 ansible.extra_vars = {
                     cluster_name: "gerar",
                     node_ip: "192.168.56.#{20 + i}",
-                    controlplane_ip: CONTROLPLANE_IP,
+                    is_control_plane: false,
-                    is_controlplane: false,
+                    control_plane_endpoint: "192.168.56.11",
                 }
             end
         end

playbooks/kubernetes/playbook.yaml

@@ -7,13 +7,13 @@
     - include_role:
       name: kubernetes/any
     - include_role:
-      name: kubernetes/controlplane
+      name: kubernetes/control_plane
-      when: is_controlplane
+      when: is_control_plane
     - include_role:
       name: kubernetes/node
-      when: not is_controlplane
+      when: not is_control_plane
 
-# - hosts: controlplane
+# - hosts: control_plane
 #   gather_facts: yes
 #   become: yes
 #   tasks:

roles/kubernetes/node/tasks/main.yml

@@ -7,15 +7,15 @@
         path: /etc/hosts
         state: present
         regexp: '^\d+\.\d+\.\d+\.\d+\ .*-cluster-endpoint$'
-        line: "{{ controlplane_ip }} {{ cluster_name }}-cluster-endpoint"
+        line: "{{ control_plane_endpoint }} {{ cluster_name }}-cluster-endpoint"
 
-    - name: Obtain join command from controlplane
+    - name: Obtain join command from control_plane
       ansible.builtin.command: "kubeadm token create --print-join-command"
-      when: inventory_hostname != "controlplane"
+      when: inventory_hostname != "control_plane"
       register: join_cmd
       delegate_to: "{{ item }}"
       delegate_facts: true
-      with_items: ["controlplane"]
+      with_items: ["control_plane"]
 
     - name: Execute join command
       become: true