Template out known_users.csv, optionally add groups

inventory/group_vars/k8s-cluster.yml

@@ -39,6 +39,7 @@ kube_cert_group: kube-cert
 kube_log_level: 2
 
 # Users to create for basic auth in Kubernetes API via HTTP
+# Optionally add groups for user
 kube_api_pwd: "changeme"
 kube_users:
   kube:
@@ -47,6 +48,8 @@ kube_users:
   root:
     pass: "{{kube_api_pwd}}"
     role: admin
+    # groups:
+    #   - system:masters
 
 
 

roles/kubernetes/secrets/tasks/main.yml

@@ -27,12 +27,10 @@
     group: "{{ kube_cert_group }}"
 
 - name: Populate users for basic auth in API
-  lineinfile:
+  template:
+    src: known_users.csv.j2
     dest: "{{ kube_users_dir }}/known_users.csv"
-    create: yes
-    line: '{{ item.value.pass }},{{ item.key }},{{ item.value.role }}'
     backup: yes
-  with_dict: "{{ kube_users }}"
   when: inventory_hostname in "{{ groups['kube-master'] }}" and kube_basic_auth|default(true)
   notify: set secret_changed
 

roles/kubernetes/secrets/templates/known_users.csv.j2

@@ -0,0 +1,3 @@
+{% for user in kube_users %}
+{{kube_users[user].pass}},{{user}},{{kube_users[user].role}}{% if kube_users[user].groups is defined %},{% set groups_csv = kube_users[user].groups|join(',') -%}"{{groups_csv}}"{% endif %}
+{% endfor %}