Add TLS support to cinder backends

By overriding the variable `cinder_backend_ssl: True` HTTPS will
be enabled, disabling HTTP support on the cinder backend api.

The ansible-role-pki is used to generate the required TLS
certificates if this functionality is enabled.

Depends-On: https://review.opendev.org/c/openstack/openstack-ansible/+/879085
Change-Id: Ib682499e900071db38cc2fd7c30822d0c33dba38

defaults/main.yml

@@ -368,12 +368,16 @@ cinder_services:
     wsgi_name: cinder-wsgi
     uwsgi_overrides: "{{ cinder_api_uwsgi_ini_overrides }}"
     uwsgi_port: "{{ cinder_service_port }}"
+    uwsgi_tls: "{{ cinder_backend_ssl | ternary(cinder_uwsgi_tls, {}) }}"
     uwsgi_bind_address: "{{ cinder_uwsgi_bind_address }}"
 
 # Cinder uWSGI settings
 cinder_wsgi_processes_max: 16
 cinder_wsgi_processes: "{{ [[ansible_facts['processor_vcpus']|default(1), 1] | max * 2, cinder_wsgi_processes_max] | min }}"
 cinder_wsgi_threads: 1
+cinder_uwsgi_tls:
+  crt: "{{ cinder_ssl_cert }}"
+  key: "{{ cinder_ssl_key }}"
 
 # Define the following dictionary variable to enable qos settings on volumes.
 # cinder_qos_specs
@@ -407,3 +411,51 @@ cinder_environment_overrides:
 _UUID_regex: "[0-9a-f]{8}-([0-9a-f]{4}-){3}[0-9a-f]{12}"
 
 cinder_memcached_servers: "{{ memcached_servers }}"
+
+###
+### Backend TLS
+###
+
+# Define if communication between haproxy and service backends should be
+# encrypted with TLS.
+cinder_backend_ssl: "{{ openstack_service_backend_ssl | default(False) }}"
+
+# Storage location for SSL certificate authority
+cinder_pki_dir: "{{ openstack_pki_dir | default('/etc/openstack_deploy/pki') }}"
+
+# Delegated host for operating the certificate authority
+cinder_pki_setup_host: "{{ openstack_pki_setup_host | default('localhost') }}"
+
+# cinder server certificate
+cinder_pki_keys_path: "{{ cinder_pki_dir ~ '/certs/private/' }}"
+cinder_pki_certs_path: "{{ cinder_pki_dir ~ '/certs/certs/' }}"
+cinder_pki_intermediate_cert_name: "{{ openstack_pki_service_intermediate_cert_name | default('ExampleCorpIntermediate') }}"
+cinder_pki_regen_cert: ''
+cinder_pki_san: "{{ openstack_pki_san | default('DNS:' ~ ansible_facts['hostname'] ~ ',IP:' ~ management_address) }}"
+cinder_pki_certificates:
+  - name: "cinder_{{ ansible_facts['hostname'] }}"
+    provider: ownca
+    cn: "{{ ansible_facts['hostname'] }}"
+    san: "{{ cinder_pki_san }}"
+    signed_by: "{{ cinder_pki_intermediate_cert_name }}"
+
+# cinder destination files for SSL certificates
+cinder_ssl_cert: /etc/cinder/cinder.pem
+cinder_ssl_key: /etc/cinder/cinder.key
+
+# Installation details for SSL certificates
+cinder_pki_install_certificates:
+  - src: "{{ cinder_user_ssl_cert | default(cinder_pki_certs_path ~ 'cinder_' ~ ansible_facts['hostname'] ~ '-chain.crt') }}"
+    dest: "{{ cinder_ssl_cert }}"
+    owner: "{{ cinder_system_user_name }}"
+    group: "{{ cinder_system_user_name }}"
+    mode: "0644"
+  - src: "{{ cinder_user_ssl_key | default(cinder_pki_keys_path ~ 'cinder_' ~ ansible_facts['hostname'] ~ '.key.pem') }}"
+    dest: "{{ cinder_ssl_key }}"
+    owner: "{{ cinder_system_user_name }}"
+    group: "{{ cinder_system_user_name }}"
+    mode: "0600"
+
+# Define user-provided SSL certificates
+#cinder_user_ssl_cert: <path to cert on ansible deployment host>
+#cinder_user_ssl_key: <path to cert on ansible deployment host>

handlers/main.yml

@@ -28,6 +28,7 @@
     - "Restart cinder services"
     - "venv changed"
     - "systemd service changed"
+    - "cert installed"
 
 - name: Start services
   service:
@@ -44,6 +45,7 @@
     - "Restart cinder services"
     - "venv changed"
     - "systemd service changed"
+    - "cert installed"
 
 - name: Ensure tgt service restarted
   service:

tasks/main.yml

@@ -101,6 +101,26 @@
   tags:
     - cinder-install
 
+- name: Create and install SSL certificates
+  include_role:
+    name: pki
+    tasks_from: main_certs.yml
+    apply:
+      tags:
+        - cinder-config
+        - pki
+  vars:
+    pki_setup_host: "{{ cinder_pki_setup_host }}"
+    pki_dir: "{{ cinder_pki_dir }}"
+    pki_create_certificates: "{{ cinder_user_ssl_cert is not defined and cinder_user_ssl_key is not defined }}"
+    pki_regen_cert: "{{ cinder_pki_regen_cert }}"
+    pki_certificates: "{{ cinder_pki_certificates }}"
+    pki_install_certificates: "{{ cinder_pki_install_certificates }}"
+  when:
+    - cinder_backend_ssl
+  tags:
+    - always
+
 - name: refresh local facts
   setup:
     filter: ansible_local