c12s-kubespray/roles/kubernetes/node/tasks/main.yml

---
- set_fact:
    standalone_kubelet: >-
      {%- if inventory_hostname in groups['kube-master'] and inventory_hostname not in groups['kube-node'] -%}true{%- else -%}false{%- endif -%}
  tags: facts

- include: pre_upgrade.yml
  tags: kubelet

- name: Ensure /var/lib/cni exists
  file:
    path: /var/lib/cni
    state: directory
    mode: 0755

- include: install.yml
  tags: kubelet

- include: nginx-proxy.yml
  when: is_kube_master == false and loadbalancer_apiserver_localhost|default(true)
  tags: nginx

- name: Write kubelet config file
  template:
    src: kubelet.j2
    dest: "{{ kube_config_dir }}/kubelet.env"
    backup: yes
  notify: restart kubelet
  tags: kubelet

- name: write the kubecfg (auth) file for kubelet
  template:
    src: "{{ item }}-kubeconfig.yaml.j2"
    dest: "{{ kube_config_dir }}/{{ item }}-kubeconfig.yaml"
    backup: yes
  with_items:
    - node
    - kube-proxy
  notify: restart kubelet
  tags: kubelet

- name: Ensure nodePort range is reserved
  sysctl:
    name: net.ipv4.ip_local_reserved_ports
    value: "{{ kube_apiserver_node_port_range }}"
    sysctl_set: yes
    state: present
    reload: yes
  when: kube_apiserver_node_port_range is defined
  tags: kube-proxy

- name: Verify if br_netfilter module exists
  shell: "modinfo br_netfilter"
  register: modinfo_br_netfilter
  failed_when: modinfo_br_netfilter.rc not in [0, 1]
  changed_when: false

- name: Enable br_netfilter module
  modprobe:
    name: br_netfilter
    state: present
  when: modinfo_br_netfilter.rc == 0

# kube-proxy needs net.bridge.bridge-nf-call-iptables enabled when found if br_netfilter is not a module
- name: Check if bridge-nf-call-iptables key exists
  command: "sysctl net.bridge.bridge-nf-call-iptables"
  failed_when: false
  changed_when: false
  register: sysctl_bridge_nf_call_iptables

- name: Enable bridge-nf-call tables
  sysctl:
    name: "{{ item }}"
    state: present
    value: 1
    reload: yes
  when: modinfo_br_netfilter.rc == 1 and sysctl_bridge_nf_call_iptables.rc == 0
  with_items:
    - net.bridge.bridge-nf-call-iptables
    - net.bridge.bridge-nf-call-arptables
    - net.bridge.bridge-nf-call-ip6tables

- name: Write proxy manifest
  template:
    src: manifests/kube-proxy.manifest.j2
    dest: "{{ kube_manifest_dir }}/kube-proxy.manifest"
  tags: kube-proxy

# reload-systemd
- meta: flush_handlers

- name: Enable kubelet
  service:
    name: kubelet
    enabled: yes
    state: started
  tags: kubelet