.

tasks/k8s_cluster/cluster/vanilla_kubernetes/add_controller_to_cluster.yml

@@ -0,0 +1,17 @@
+######################################
+# add controller to existing cluster #
+######################################
+---
+- name: copy clusterConfig to remote location
+  template:
+    src: '../templates/k8s_cluster/cluster/joinController.yml.j2'
+    dest: /tmp/joinController.yml
+
+- name: Join the controller node to cluster
+  command: kubeadm join --config=/tmp/joinController.yml
+
+- name: Setup kubeconfig for local usage
+  command: "{{ item }}"
+  loop:
+    - mkdir -p ~/.kube
+    - cp -i /etc/kubernetes/admin.conf ~/.kube/config

tasks/k8s_cluster/cluster/vanilla_kubernetes/add_worker_to_cluster.yml

@@ -0,0 +1,12 @@
+######################################
+# add worker to existing cluster     #
+######################################
+---
+- name: Copy the worker join command to server location
+  copy: src=join_command_worker.sh dest=/tmp/join_command_worker.sh mode=0777
+
+- name: Join the worker node to cluster
+  command: sh /tmp/join_command_worker.sh
+
+- name: Delete local copy of join worker
+  local_action: file path=./join_command_worker.sh state=absent

tasks/k8s_cluster/cluster/vanilla_kubernetes/generate_join_command.yml

@@ -0,0 +1,28 @@
+######################################
+# Tasks for init k8s cluster         #
+######################################
+---
+- name: Generate join command
+  command: kubeadm token create --print-join-command
+  register: join_command
+
+- name: Copy join command to local file
+  local_action: copy content="{{ join_command.stdout_lines[0] }}" dest="./join_command_worker.sh"
+
+- name: Generate join command controller token
+  command: kubeadm token create
+  register: join_command_token
+
+- name: Generate join command controller certsKey
+  command: kubeadm init phase upload-certs --upload-certs
+  register: join_command_controller_certskey
+
+- name: Generate join command controller certssh256
+  shell: openssl x509 -pubkey -in /etc/kubernetes/pki/ca.crt | openssl rsa -pubin -outform der 2>/dev/null | openssl dgst -sha256 -hex | sed 's/^.* //'
+  register: join_command_controller_certsha256
+
+- name: save facts for controller join
+  set_fact:
+    token: '{{ join_command_token.stdout }}'
+    certskey: '{{ join_command_controller_certskey.stdout_lines[-1] }}'
+    certsha256: '{{ join_command_controller_certsha256.stdout }}'

tasks/k8s_cluster/cluster/vanilla_kubernetes/init_kubernetes_cluster.yml

@@ -0,0 +1,69 @@
+######################################
+# Tasks for init k8s cluster         #
+######################################
+---
+- name: Get hostname
+  command: hostname
+  register: old_hostname
+  changed_when: false
+
+- set_fact: hostname={{ old_hostname.stdout | lower }}
+
+- name: Pull k8s images
+  command: kubeadm config images pull --kubernetes-version=v{{ kubernetesVersion }}
+
+- name: copy clusterConfig to remote location
+  template:
+    src: '../templates/k8s_cluster/cluster/clusterConfiguration.yml.j2'
+    dest: /tmp/clusterConfiguration.yml
+
+- name: Initialize the Kubernetes cluster using kubeadm
+  command:
+    argv:
+      - kubeadm
+      - init
+      - --config=/tmp/clusterConfiguration.yml
+      - --node-name={{ hostname }}
+      - --ignore-preflight-errors
+      - Swap
+      - --upload-certs
+
+- name: Remove clusterConfig on remote location
+  ansible.builtin.file:
+    path: /tmp/clusterConfiguration.yml
+    state: absent
+
+- name: Setup kubeconfig for local usage
+  command: "{{ item }}"
+  loop:
+   - mkdir -p ~/.kube
+   - cp -i /etc/kubernetes/admin.conf ~/.kube/config
+
+- name: Wait for all k8s nodes to be ready
+  shell: kubectl wait --for=condition=Ready nodes --all --timeout=600s
+  register: nodes_ready
+
+- name: create Calico NetworkManager directory
+  file:
+    path: '/etc/NetworkManager/conf.d/'
+    state: directory
+    mode: 0755
+
+- name: Configure Calico NetworkManager
+  template:
+    src: ../templates/k8s_cluster/cluster/calico.conf.j2
+    dest: /etc/NetworkManager/conf.d/calico.conf
+    owner: root
+    mode: '0644'
+
+- name: Install calico pod network
+  kubernetes.core.k8s:
+    state: present
+    definition: "{{ lookup('template', '../templates/k8s_cluster/cluster/calico.yml.j2') | from_yaml_all }}"
+
+- name: Wait for calico daemonset become ready
+  command: "kubectl rollout status daemonset calico-node -n kube-system --timeout 60s"
+
+- name: Generate join command
+  command: kubeadm token create --print-join-command
+  register: join_command

tasks/k8s_cluster/cluster/vanilla_kubernetes/restart_coredns.yml

@@ -0,0 +1,9 @@
+########################################
+#Restart DNS after DeamonSet Deployment#
+########################################
+---
+- name: Wait for calico pods become ready
+  command: "kubectl rollout status daemonset calico-node -n kube-system --timeout 120s"
+
+- name: Restart CoreDNS deployment
+  command: "kubectl rollout restart deployments/coredns -n kube-system"