master.yml

- hosts: kubernetes_master
  become: yes
  tasks:
    - name: Installing useful packages
      yum:
        name: "{{ packages }}"
        state: latest
      vars:
        packages:
        - vim
        - wget
        - elinks
        - telnet
        - bind-utils

    - name: Initialize Kubernetes cluster
      shell: "kubeadm init --pod-network-cidr=10.244.0.0/16 &>> cluster_initialized.log"
      args:
        chdir: $HOME
        creates: cluster_initialized.log

    - name: Create kube config dir
      file:
        path: $HOME/.kube
        state: directory
        mode: 0755

    - name: Configure kube config
      copy:
        src: /etc/kubernetes/admin.conf
        dest: $HOME/.kube/config
        remote_src: yes
        owner: root
        group: root
        mode: 0640

    - name: Install flannel
      shell: "kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/v0.9.1/Documentation/kube-flannel.yml &>> pod_network_setup.log"
      args:
        chdir: $HOME
        creates: pod_network_setup.log

    - name: Downloading Kubernetes dashbaord
      get_url:
        url: https://raw.githubusercontent.com/kubernetes/dashboard/master/src/deploy/recommended/kubernetes-dashboard.yaml
        dest: /root/kubernetes-dashboard.yaml
        force: yes

    - name: Setting up dashboard public IP
      lineinfile:
        path: /root/kubernetes-dashboard.yaml
        line: "  externalIPs:\n    - {{ hostvars['master']['ansible_default_ipv4']['address'] }}"

    - name: Install Kubernetes dashboard
      shell: "kubectl apply -f /root/kubernetes-dashboard.yaml &>> dashbaord_setup.log"

    - name: Create a ServiceAccount
      shell: kubectl create serviceaccount cluster-admin-dashboard-sa
      args:
        chdir: $HOME/.kube/
        creates: admin_token

    - name: Create admin role
      shell: kubectl create clusterrolebinding cluster-admin-dashboard-sa --clusterrole=cluster-admin   --serviceaccount=default:cluster-admin-dashboard-sa 
      args:
        chdir: $HOME/.kube/
        creates: admin_token

    - name: Log admin token
      shell: "kubectl describe secret $( kubectl get secrets | grep cluster-admin-dashboard-sa | awk '{print $1}' ) &>> $HOME/.kube/admin_token"
      args:
        chdir: $HOME/.kube/
        creates: admin_token