---
- name: prepare cluster config
  hosts: k8s-stream
  gather_facts: no
  run_once: yes
  tasks:
  - name: configure node lists
    set_fact:
      kubernetes_nodes: "{{ groups['k8s-stream'] }}"
      kubernetes_nodes_master: "{{ groups['k8s-stream-master'] | first }}"

  - name: check if every node has a net_index assigned
    debug:
      msg: "nodes without net-index: {{ kubernetes_nodes | difference(kubernetes.net_index.keys()) | join(', ') }}"
    failed_when: kubernetes_nodes | difference(kubernetes.net_index.keys()) | length > 0

- name: install kubernetes and overlay network
  hosts: k8s-stream
  roles:
  ## Since `base` has a dependency for docker it would install and start the daemon
  ## without the docker daemon config file generated by `net`.
  ## This means that the docker daemon will create a bridge and install iptables rules
  ## upon first startup (the first time this playbook runs on a specific host).
  ## Since it is a tedious task to remove the interface and the firewall rules it is much
  ## easier to just run `net` before `base` as `net` does not need anything from `base`.
  - role: kubernetes-net
  - role: kubernetes-base

- name: configure kubernetes master
  hosts: k8s-stream-master
  roles:
  - role: kubernetes-master

- name: configure kubernetes nodes
  hosts: k8s-stream:!k8s-stream-master
  roles:
  - role: kubernetes-node

## TODO: cleanup (remove superflous nodes and delete bootstrap token)