kubespray/roles/network_plugin/tasks/flannel.yml

---
- name: Create flannel user
  user: name=flannel shell=/bin/nologin

- name: Install flannel binaries
  copy: 
     src={{ local_release_dir }}/flannel/bin/flanneld
     dest={{ bin_dir }}
     owner=flannel
     mode=u+x
  notify:
    - restart flannel

- name: Write flannel.service systemd file
  template:
    src: flannel/systemd-flannel.service.j2
    dest: /etc/systemd/system/flannel.service
  notify: restart flannel

- name: Write docker.service systemd file
  template:
    src: flannel/systemd-docker.service.j2
    dest: /lib/systemd/system/docker.service
  notify: restart docker

- name: Set fact for ectcd command conf file location
  set_fact:
    conf_file: "/tmp/flannel-conf.json"
  run_once: true
  delegate_to: "{{ groups['kube-master'][0] }}"

- name: Create flannel config file to go in etcd
  template: src=flannel/flannel-conf.json.j2 dest={{ conf_file }}
  run_once: true
  delegate_to: "{{ groups['kube-master'][0] }}"

- name: Flannel configuration into etcd
  shell: "{{ bin_dir }}/etcdctl set /{{ cluster_name }}/network/config < {{ conf_file }}"
  delegate_to: "{{ groups['kube-master'][0] }}"
  notify: restart flannel

- name: Clean up the flannel config file
  file: path=/tmp/flannel-config.json state=absent
  run_once: true
  delegate_to: "{{ groups['kube-master'][0] }}"

- name: Launch Flannel
  service: name=flannel state=started enabled=yes
  notify:
    - restart flannel

- name: Enable Docker
  service: name=docker enabled=yes state=started