install_k8s.yaml

---
- hosts: all
  remote_user: kube
  become: true
  become_method: sudo
  become_user: root
  gather_facts: true
  connection: ssh
  vars:
    sysctl_config:
      net.bridge.bridge-nf-call-iptables: 1
      net.ipv4.ip_forward: 1
      net.bridge.bridge-nf-call-ip6tables: 1

  tasks:
    - name: load moduls
      community.general.modprobe:
        name: "{{ item }}"
        state: present
      with_items:
        - overlay
        - br_netfilter

    - name: add conf for containerd
      ansible.posix.sysctl:
        sysctl_file: "/etc/sysctl.d/99-kubernetes-cri.conf"
        name: '{{ item.key }}'
        value: '{{ item.value }}'
        sysctl_set: true
        state: present
        reload: true
        ignoreerrors: true
      with_dict: '{{ sysctl_config }}'

    - name: install containerd
      ansible.builtin.apt:
        name:
          - containerd
          - apt-transport-https
          - curl
        update_cache: true

    - name: create folder
      ansible.builtin.file:
        path: /etc/containerd
        state: directory
        recurse: true

    - name: init conf containerd
      ansible.builtin.shell: |
        containerd config default | tee /etc/containerd/config.toml
      args:
        creates: "/etc/containerd/config.toml"
      notify:
        - restart containerd

    - name: disable swap
      ansible.posix.mount:
        name: swap
        fstype: swap
        state: absent

    - name: add an apt signing key
      ansible.builtin.apt_key:
        url: https://packages.cloud.google.com/apt/doc/apt-key.gpg
        state: present

    - name: add K8s Source
      ansible.builtin.blockinfile:
        path: "/etc/apt/sources.list.d/kubernetes.list"
        block: |
              deb https://apt.kubernetes.io/ kubernetes-xenial main
        create: true

    - name: install kubernetes
      ansible.builtin.apt:
        name:
          - kubelet=1.20.1-00
          - kubeadm=1.20.1-00
          - kubectl=1.20.1-00
        update_cache: true

    - name: prevent kube from being upgraded
      ansible.builtin.dpkg_selections:
        name: "{{ item }}"
        selection: hold
      with_items:
        - kubelet
        - kubeadm
        - kubectl

  handlers:
    - name: restart containerd
      ansible.builtin.service:
        name: containerd
        state: restarted