Add MySQL connection SSL support

When 'ironic_galera_use_ssl' is True, use an encrypted connection to
the database using either a self-signed or user-provided CA certificate.

A new non-voting test has been added to verify that the role remains
functional when enabling SSL features.

Change-Id: I1c0598a2f83d330014ffbb2612386016347d3425
Partial-Bug: 1667789

defaults/main.yml

@@ -178,7 +178,9 @@ ironic_openstack_auth_strategy: keystone
 #ironic_openstack_api_url: ''  # Not required when we have keystone
 ironic_openstack_dhcp_provider: neutron
 ironic_openstack_sync_power_state_interval: 60
-ironic_openstack_db_connection_string: "mysql+pymysql://{{ ironic_galera_user }}:{{ ironic_container_mysql_password }}@{{ ironic_galera_address }}/ironic"
+ironic_galera_use_ssl: "{{ galera_use_ssl | default(False) }}"
+ironic_galera_ssl_ca_cert: "{{ galera_ssl_ca_cert | default('/etc/ssl/certs/galera-ca.pem') }}"
+ironic_openstack_db_connection_string: "mysql+pymysql://{{ ironic_galera_user }}:{{ ironic_container_mysql_password }}@{{ ironic_galera_address }}/ironic{% if ironic_galera_use_ssl | bool %}&ssl_ca={{ ironic_galera_ssl_ca_cert }}{% endif %}"
 
 # Standalone Ironic configuration
 ironic_standalone_driver_list:
@@ -188,7 +190,7 @@ ironic_standalone_auth_strategy: noauth
 ironic_standalone_api_url: "{{ ironic_service_internaluri }}/"
 ironic_standalone_dhcp_provider: none
 ironic_standalone_sync_power_state_interval: -1
-ironic_standalone_db_connection_string: "mysql+pymysql://{{ ironic_galera_user }}:{{ ironic_container_mysql_password }}@{{ ironic_galera_address }}/ironic"
+ironic_standalone_db_connection_string: "{{ ironic_openstack_db_connection_string }}"
 
 # Ironic db tuning
 ironic_db_max_overflow: 10

tox.ini

@@ -103,6 +103,17 @@ commands =
     bash -c "{toxinidir}/tests/common/test-ansible-functional.sh"
 
 
+[testenv:ssl]
+deps =
+    {[testenv:ansible]deps}
+setenv =
+    {[testenv]setenv}
+    ANSIBLE_PARAMETERS=-vvv -e galera_use_ssl=True
+commands =
+    bash -c "{toxinidir}/tests/tests-repo-clone.sh"
+    bash -c "{toxinidir}/tests/common/test-ansible-functional.sh"
+
+
 [testenv:linters]
 deps =
     {[testenv:ansible]deps}

zuul.d/jobs.yaml

@@ -0,0 +1,21 @@
+---
+# Copyright 2017, Rackspace US, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+- job:
+    name: openstack-ansible-ironic-ssl-nv
+    parent: openstack-ansible-functional-ubuntu-xenial
+    voting: false
+    vars:
+      tox_env: ssl

zuul.d/project.yaml

@@ -19,6 +19,7 @@
       jobs:
         - openstack-ansible-linters
         - openstack-ansible-functional-ubuntu-xenial
+        - openstack-ansible-ironic-ssl-nv
     experimental:
       jobs:
         - openstack-ansible-integrated-deploy-aio
@@ -26,3 +27,4 @@
       jobs:
         - openstack-ansible-linters
         - openstack-ansible-functional-ubuntu-xenial
+        - openstack-ansible-ironic-ssl-nv