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---
- name: create host groups for kubernetes cluster
hosts: "{{ kubernetes_cluster_layout.nodes_group }}"
connection: local
gather_facts: no
run_once: yes
tasks:
- name: sanity check - fail if control-plane nodes are not included in node group
assert:
msg: "the cluster node group '{{ kubernetes_cluster_layout.nodes_group }}' must include *all* nodes (control-plane and worker)"
that: kubernetes_cluster_layout.controlplane_nodes | difference(ansible_play_hosts_all) | length == 0
- name: sanity check - fail if primary control-group node is not in control-group node list
assert:
msg: "kubernetes_cluster_layout.controlplane_nodes must include kubernetes_cluster_layout.primary_controlplane_node"
that: kubernetes_cluster_layout.primary_controlplane_node is undefined or kubernetes_cluster_layout.primary_controlplane_node in kubernetes_cluster_layout.controlplane_nodes
- name: sanity check - fail on multiple control-plane nodes but no primary is configured
assert:
msg: "for multiple control-plane nodes to work you need to define kubernetes_cluster_layout.primary_controlplane_node"
that: (kubernetes_cluster_layout.controlplane_nodes | length) == 1 or kubernetes_cluster_layout.primary_controlplane_node is defined
- name: create group for all kubernetes nodes
loop: "{{ ansible_play_hosts_all }}"
add_host:
name: "{{ item }}"
inventory_dir: "{{ hostvars[item].inventory_dir }}"
group: _kubernetes_nodes_
changed_when: False
- name: create group for kubernetes control-plane nodes
loop: "{{ kubernetes_cluster_layout.controlplane_nodes }}"
add_host:
name: "{{ item }}"
inventory_dir: "{{ hostvars[item].inventory_dir }}"
group: _kubernetes_controlplane_nodes_
changed_when: False
- name: create group for kubernetes primary control-plane node
vars:
item: "{{ kubernetes_cluster_layout.primary_controlplane_node | default(kubernetes_cluster_layout.controlplane_nodes[0]) }}"
add_host:
name: "{{ item }}"
inventory_dir: "{{ hostvars[item].inventory_dir }}"
group: _kubernetes_primary_controlplane_node_
changed_when: False
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