k8s_install.yaml

---
- hosts: kubernetes
  remote_user: centos
  become: yes
  become_method: sudo
  become_user: root
  gather_facts: yes
  connection: ssh

  tasks:
  - name: "Update system with Latest Packages"
    ansible.builtin.yum:
      name: "*"
      state: latest

  - name: "restart system to reboot to newest kernel"
    shell: "sleep 10 && reboot"
    async: 1
    poll: 0

  - name: "wait for 10 seconds"
    pause:
      seconds: 20

  - name: "wait for the system to reboot"
    wait_for_connection:
      connect_timeout: 20
      sleep: 10
      delay: 10
      timeout: 60

  - name: Create containerd config file
    file:
      path: "/etc/modules-load.d/containerd.conf"
      state: "touch"

  - name: Add conf for containerd
    blockinfile:
      path: "/etc/modules-load.d/containerd.conf"
      block: |
            overlay
            br_netfilter

  - name: modprobe
    shell: |
            sudo modprobe overlay
            sudo modprobe br_netfilter


  - name: Set system configurations for Kubernetes networking
    file:
      path: "/etc/sysctl.d/99-kubernetes-cri.conf"
      state: "touch"

  - name: Add conf for containerd
    blockinfile:
      path: "/etc/sysctl.d/99-kubernetes-cri.conf"
      block: |
             net.bridge.bridge-nf-call-iptables = 1
             net.ipv4.ip_forward = 1
             net.bridge.bridge-nf-call-ip6tables = 1

  - name: Apply new settings
    command: sudo sysctl --system

  - name: "Install Docker as a Container Runtime"
    ansible.builtin.get_url:
      url: https://download.docker.com/linux/centos/docker-ce.repo
      dest: /etc/yum.repos.d/docker-ce.repo

  - name: "Install Docker Packages with containerd Container Runtime"
    ansible.builtin.yum:
      name:
        - docker-ce
        - docker-ce-cli
        - containerd.io
        - docker-compose-plugin
        - epel-release
      state: present

  - name: "Enable and Start the Docker"
    ansible.builtin.systemd:
      name: docker
      state: started
      enabled: true

  - name: "Enable and Start the Containerd"
    ansible.builtin.systemd:
      name: containerd
      state: started
      enabled: true        

  - name: "Remove config.tom File"
    ansible.builtin.file:
      path: /etc/containerd/config.tom
      state: absent

  - name: "Restart Containerd Service to take effect"
    ansible.builtin.systemd:
      name: containerd
      state: restarted
      enabled: true


#     - name: disable swap
#       shell: |
#               sudo swapoff -a
#               sudo sed -i '/ swap / s/^\(.*\)$/#\1/g' /etc/fstab

#     - name: install and configure dependencies
#       shell: |
#               sudo yum update && sudo yum install -y apt-transport-https curl
#               curl -s https://packages.cloud.google.com/apt/doc/apt-key.gpg | sudo apt-key add -

  - name: Create kubernetes repo file
    file:
      path: "/etc/yum.repos.d/kubernetes.repo"
      state: "touch"

  - name: Add K8s Source
    ansible.builtin.blockinfile:
      path: "/etc/yum.repos.d/kubernetes.repo"
      block: |
        [kubernetes]
        name=Kubernetes
        baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
        enabled=1
        gpgcheck=1
        gpgkey=https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
        exclude=kubelet kubeadm kubectl

  - name: "Verification if Repository File is properly created or not"
    ansible.builtin.command:
      cmd: "cat /etc/yum.repos.d/kubernetes.repo"
    register: file_content

  - name: "Content Redirection to Output"
    debug:
      var: file_content
         
  - name: install kubernetes
    ansible.builtin.yum:
      name: 
        - kubeadm
        - kubelet
        - kubectl
      disable_excludes: kubernetes
   
  - name: "Start and Enable Kubernetes"
    ansible.builtin.systemd:
      name: kubelet
      enabled: true