initial commit

ansible/playbooks/05-master-init.yml

@@ -0,0 +1,67 @@
+---
+- name: Initialize Kubernetes master
+  hosts: masters
+  become: true
+
+  vars:
+    pod_network_cidr: "10.244.0.0/16"   # Flannel default
+
+  tasks:
+    - name: Check if cluster already initialized
+      stat:
+        path: /etc/kubernetes/admin.conf
+      register: kubeadm_init_done
+
+    - name: Run kubeadm init
+      command: >
+        kubeadm init
+        --apiserver-advertise-address={{ ansible_host }}
+        --pod-network-cidr={{ pod_network_cidr }}
+      when: not kubeadm_init_done.stat.exists
+      register: kubeadm_output
+
+    - name: Create .kube dir for cloud-user
+      file:
+        path: /home/cloud-user/.kube
+        state: directory
+        mode: "0700"
+        owner: cloud-user
+        group: cloud-user
+
+    - name: Copy admin.conf to cloud-user kubeconfig
+      copy:
+        src: /etc/kubernetes/admin.conf
+        dest: /home/cloud-user/.kube/config
+        remote_src: true
+        owner: cloud-user
+        group: cloud-user
+        mode: "0600"
+
+    - name: Create .kube dir for root (enables sudo kubectl)
+      file:
+        path: /root/.kube
+        state: directory
+        mode: "0700"
+
+    - name: Copy admin.conf to root kubeconfig
+      copy:
+        src: /etc/kubernetes/admin.conf
+        dest: /root/.kube/config
+        remote_src: true
+        mode: "0600"
+
+    - name: Install Flannel CNI
+      command: kubectl apply -f https://github.com/flannel-io/flannel/releases/latest/download/kube-flannel.yml
+      environment:
+        KUBECONFIG: /etc/kubernetes/admin.conf
+
+    - name: Get join command
+      command: kubeadm token create --print-join-command
+      register: join_command
+
+    - name: Save join command to local file
+      local_action:
+        module: copy
+        content: "{{ join_command.stdout }}"
+        dest: /tmp/k8s_join_command.sh
+        mode: "0600"