feat: Add tasks to generate kubeconfig files

This commit adds tasks to generate kubeconfig files for the kube-proxy, kube-controller-manager, kube-scheduler services, and the admin user.
The tasks set up the necessary configurations using kubectl commands and include embedding certificates, setting cluster information, server URLs, client credentials, and context details.

ansible/tasks/generate_kubeconfig.yml

@@ -0,0 +1,100 @@
+---
+- name: Set facts
+  run_once: true
+  block:
+    - name: Get loadbalancer IP
+      ansible.builtin.shell:
+        cmd: "dig +short loadbalancer"
+      register: loadbalancer_ip
+
+    - name: Set loadbalancer IP
+      ansible.builtin.set_fact:
+        loadbalancer_ip: "{{ loadbalancer_ip.stdout }}"
+
+    - name: Print loadbalancer IP
+      ansible.builtin.debug:
+        msg: "Loadbalancer IP: {{ loadbalancer_ip }}"
+
+- name: Generate a kubeconfig file for the kube-proxy service
+  ansible.builtin.shell: |
+    kubectl config set-cluster kubernetes-the-hard-way \
+      --certificate-authority=ca.crt \
+      --embed-certs=true \
+      --server=https://{{ loadbalancer_ip }}:6443 \
+      --kubeconfig=kube-proxy.kubeconfig
+
+    kubectl config set-credentials system:kube-proxy \
+      --client-certificate=kube-proxy.crt \
+      --client-key=kube-proxy.key \
+      --embed-certs=true \
+      --kubeconfig=kube-proxy.kubeconfig
+
+    kubectl config set-context default \
+      --cluster=kubernetes-the-hard-way \
+      --user=system:kube-proxy \
+      --kubeconfig=kube-proxy.kubeconfig
+
+    kubectl config use-context default --kubeconfig=kube-proxy.kubeconfig
+
+- name: Generate a kubeconfig file for the kube-controller-manager service
+  ansible.builtin.shell: |
+    kubectl config set-cluster kubernetes-the-hard-way \
+      --certificate-authority=ca.crt \
+      --embed-certs=true \
+      --server=https://{{ loadbalancer_ip }}:6443 \
+      --kubeconfig=kube-controller-manager.kubeconfig
+
+    kubectl config set-credentials system:kube-controller-manager \
+      --client-certificate=kube-controller-manager.crt \
+      --client-key=kube-controller-manager.key \
+      --embed-certs=true \
+      --kubeconfig=kube-controller-manager.kubeconfig
+
+    kubectl config set-context default \
+      --cluster=kubernetes-the-hard-way \
+      --user=system:kube-controller-manager \
+      --kubeconfig=kube-controller-manager.kubeconfig
+
+    kubectl config use-context default --kubeconfig=kube-controller-manager.kubeconfig
+
+- name: Generate a kubeconfig file for the kube-scheduler service
+  ansible.builtin.shell: |
+    kubectl config set-cluster kubernetes-the-hard-way \
+      --certificate-authority=ca.crt \
+      --embed-certs=true \
+      --server=https://{{ loadbalancer_ip }}:6443 \
+      --kubeconfig=kube-scheduler.kubeconfig
+
+    kubectl config set-credentials system:kube-scheduler \
+      --client-certificate=kube-scheduler.crt \
+      --client-key=kube-scheduler.key \
+      --embed-certs=true \
+      --kubeconfig=kube-scheduler.kubeconfig
+
+    kubectl config set-context default \
+      --cluster=kubernetes-the-hard-way \
+      --user=system:kube-scheduler \
+      --kubeconfig=kube-scheduler.kubeconfig
+
+    kubectl config use-context default --kubeconfig=kube-scheduler.kubeconfig
+
+- name: Generate a kubeconfig file for the admin user
+  ansible.builtin.shell: |
+    kubectl config set-cluster kubernetes-the-hard-way \
+      --certificate-authority=ca.crt \
+      --embed-certs=true \
+      --server=https://127.0.0.1:6443 \
+      --kubeconfig=admin.kubeconfig
+
+    kubectl config set-credentials admin \
+      --client-certificate=admin.crt \
+      --client-key=admin.key \
+      --embed-certs=true \
+      --kubeconfig=admin.kubeconfig
+
+    kubectl config set-context default \
+      --cluster=kubernetes-the-hard-way \
+      --user=admin \
+      --kubeconfig=admin.kubeconfig
+
+    kubectl config use-context default --kubeconfig=admin.kubeconfig