Vault role updates:

* using separated vault roles for generate certs with different `O` (Organization) subject field;
  * configure vault roles for issuing certificates with different `CN` (Common name) subject field;
  * set `CN` and `O` to `kubernetes` and `etcd` certificates;
  * vault/defaults vars definition was simplified;
  * vault dirs variables defined in kubernetes-defaults foles for using
  shared tasks in etcd and kubernetes/secrets roles;
  * upgrade vault to 0.8.1;
  * generate random vault user password for each role by default;
  * fix `serial` file name for vault certs;
  * move vault auth request to issue_cert tasks;
  * enable `RBAC` in vault CI;

roles/kubernetes/secrets/tasks/gen_certs_vault.yml

@@ -1,56 +1,23 @@
 ---
 - include: sync_kube_master_certs.yml
   when: inventory_hostname in groups['kube-master']
-  tags: k8s-secrets
 
 - include: sync_kube_node_certs.yml
   when: inventory_hostname in groups['k8s-cluster']
-  tags: k8s-secrets
 
-- name: gen_certs_vault | Read in the local credentials
-  command: cat /etc/vault/roles/kube/userpass
-  register: kube_vault_creds_cat
-  delegate_to: "{{ groups['k8s-cluster'][0] }}"
-
-- name: gen_certs_vault | Set facts for read Vault Creds
-  set_fact:
-    kube_vault_creds: "{{ kube_vault_creds_cat.stdout|from_json }}"
-  delegate_to: "{{ groups['k8s-cluster'][0] }}"
-
-- name: gen_certs_vault | Log into Vault and obtain an token
-  uri:
-    url: "{{ hostvars[groups['vault'][0]]['vault_leader_url'] }}/v1/auth/userpass/login/{{ kube_vault_creds.username }}"
-    headers:
-      Accept: application/json
-      Content-Type: application/json
-    method: POST
-    body_format: json
-    body:
-      password: "{{ kube_vault_creds.password }}"
-  register: kube_vault_login_result
-  delegate_to: "{{ groups['k8s-cluster'][0] }}"
-
-- name: gen_certs_vault | Set fact for Vault API token
-  set_fact:
-    kube_vault_headers:
-      Accept: application/json
-      Content-Type: application/json
-      X-Vault-Token: "{{ kube_vault_login_result.get('json',{}).get('auth', {}).get('client_token') }}"
-  run_once: true
-
-# Issue certs to kube-master nodes
+# Issue admin certs to kube-master hosts
 - include: ../../../vault/tasks/shared/issue_cert.yml
   vars:
-    issue_cert_copy_ca: "{{ item == kube_master_certs_needed|first }}"
+    issue_cert_common_name: "admin:{{ item.rsplit('/', 1)[1].rsplit('.', 1)[0] }}"
+    issue_cert_copy_ca: "{{ item == kube_admin_certs_needed|first }}"
     issue_cert_file_group: "{{ kube_cert_group }}"
     issue_cert_file_owner: kube
-    issue_cert_headers: "{{ kube_vault_headers }}"
     issue_cert_hosts: "{{ groups['kube-master'] }}"
     issue_cert_path: "{{ item }}"
-    issue_cert_role: kube
+    issue_cert_role: kube-master
     issue_cert_url: "{{ hostvars[groups.vault|first]['vault_leader_url'] }}"
     issue_cert_mount_path: "{{ kube_vault_mount_path }}"
-  with_items: "{{ kube_master_certs_needed|d([]) }}"
+  with_items: "{{ kube_admin_certs_needed|d([]) }}"
   when: inventory_hostname in groups['kube-master']
 
 - name: gen_certs_vault | Set fact about certificate alt names
@@ -69,12 +36,13 @@
   when: loadbalancer_apiserver is defined and apiserver_loadbalancer_domain_name is defined
   run_once: true
 
+# Issue master components certs to kube-master hosts
 - include: ../../../vault/tasks/shared/issue_cert.yml
   vars:
+    issue_cert_common_name: "kubernetes"
     issue_cert_alt_names: "{{ kube_cert_alt_names }}"
     issue_cert_file_group: "{{ kube_cert_group }}"
     issue_cert_file_owner: kube
-    issue_cert_headers: "{{ kube_vault_headers }}"
     issue_cert_hosts: "{{ groups['kube-master'] }}"
     issue_cert_ip_sans: >-
         [
@@ -87,7 +55,7 @@
         "127.0.0.1","::1","{{ kube_apiserver_ip }}"
         ]
     issue_cert_path: "{{ item }}"
-    issue_cert_role: kube
+    issue_cert_role: kube-master
     issue_cert_url: "{{ hostvars[groups.vault|first]['vault_leader_url'] }}"
     issue_cert_mount_path: "{{ kube_vault_mount_path }}"
   with_items: "{{ kube_master_components_certs_needed|d([]) }}"
@@ -97,27 +65,28 @@
 # Issue node certs to k8s-cluster nodes
 - include: ../../../vault/tasks/shared/issue_cert.yml
   vars:
+    issue_cert_common_name: "system:node:{{ item.rsplit('/', 1)[1].rsplit('.', 1)[0] }}"
     issue_cert_copy_ca: "{{ item == kube_node_certs_needed|first }}"
     issue_cert_file_group: "{{ kube_cert_group }}"
     issue_cert_file_owner: kube
-    issue_cert_headers: "{{ kube_vault_headers }}"
     issue_cert_hosts: "{{ groups['k8s-cluster'] }}"
     issue_cert_path: "{{ item }}"
-    issue_cert_role: kube
+    issue_cert_role: kube-node
     issue_cert_url: "{{ hostvars[groups.vault|first]['vault_leader_url'] }}"
     issue_cert_mount_path: "{{ kube_vault_mount_path }}"
   with_items: "{{ kube_node_certs_needed|d([]) }}"
   when: inventory_hostname in groups['k8s-cluster']
 
+# Issue proxy certs to k8s-cluster nodes
 - include: ../../../vault/tasks/shared/issue_cert.yml
   vars:
+    issue_cert_common_name: "system:kube-proxy:{{ item.rsplit('/', 1)[1].rsplit('.', 1)[0] }}"
     issue_cert_copy_ca: "{{ item == kube_proxy_certs_needed|first }}"
     issue_cert_file_group: "{{ kube_cert_group }}"
     issue_cert_file_owner: kube
-    issue_cert_headers: "{{ kube_vault_headers }}"
     issue_cert_hosts: "{{ groups['k8s-cluster'] }}"
     issue_cert_path: "{{ item }}"
-    issue_cert_role: kube
+    issue_cert_role: kube-proxy
     issue_cert_url: "{{ hostvars[groups.vault|first]['vault_leader_url'] }}"
     issue_cert_mount_path: "{{ kube_vault_mount_path }}"
   with_items: "{{ kube_proxy_certs_needed|d([]) }}"