config: Enable OSA_CONFIG_DIR to customize configuration folder

We have some basics wired up in order to use a different config.
directory for running OpenStack Ansible.  However, a lot of those
are implemented as configuration argument to the dynamic inventory
script but that's impossible to pass normally when running Ansible.

This patch creates a new environment variable called OSA_CONFIG_DIR
which allows you to customize the directoy of your openstack_deploy
folder which means that you can use a deploy host for several diff.
environemnts.

Change-Id: Ia528ff449330fbb04be6cd0d03353fa3158e6694

inventory/dynamic_inventory.py

@@ -40,7 +40,7 @@ def args(arg_list):
         '--config',
         help='Path containing the user defined configuration files',
         required=False,
-        default=None
+        default=os.getenv('OSA_CONFIG_DIR', None)
     )
     parser.add_argument(
         '--list',

inventory/group_vars/all/all.yml

@@ -16,6 +16,9 @@
 ## OpenStack Source Code Release
 openstack_release: "{{ lookup('env', 'OSA_VERSION') | default('undefined', true) }}"
 
+## OpenStack Configuration directory
+openstack_config_dir: "{{ lookup('env', 'OSA_CONFIG_DIR') | default('/etc/openstack_deploy') }}"
+
 ## Verbosity Options
 debug: False
 

inventory/group_vars/all/ceph.yml

@@ -26,7 +26,7 @@ ceph_repository: community
 # ceph-ansible roles. It is defaulted in ceph_client but set here to keep the
 # OSA/ceph-ansible integrations in sync.
 ceph_stable_release: mimic
-fetch_directory: /etc/openstack_deploy/ceph-fetch/
+fetch_directory: "{{ openstack_config_dir }}/ceph-fetch/"
 # tries to create /var/log/ceph as a directory and fails if the log link already
 # exists. we handle the log dir creation so this is not something we need
 # ceph-common to prepare for us.

scripts/openstack-ansible.rc

@@ -12,9 +12,11 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+export OSA_CONFIG_DIR="${OSA_CONFIG_DIR:-/etc/openstack_deploy}"
+
 export ANSIBLE_RETRY_FILES_ENABLED="${ANSIBLE_RETRY_FILES_ENABLED:-False}"
 
-export ANSIBLE_INVENTORY="${ANSIBLE_INVENTORY:-OSA_INVENTORY_PATH/dynamic_inventory.py,OSA_INVENTORY_PATH/inventory.ini,/etc/openstack_deploy/inventory.ini}"
+export ANSIBLE_INVENTORY="${ANSIBLE_INVENTORY:-OSA_INVENTORY_PATH/dynamic_inventory.py,OSA_INVENTORY_PATH/inventory.ini,${OSA_CONFIG_DIR}/inventory.ini}"
 
 export ANSIBLE_LOG_PATH="${ANSIBLE_LOG_PATH:-/openstack/log/ansible-logging/ansible.log}"
 mkdir -p "$(dirname ${ANSIBLE_LOG_PATH})" || unset ANSIBLE_LOG_PATH
@@ -33,7 +35,7 @@ export ANSIBLE_GATHERING="${ANSIBLE_GATHERING:-smart}"
 export ANSIBLE_GATHER_SUBSET="${ANSIBLE_GATHER_SUBSET:-network,hardware,virtual}"
 
 export ANSIBLE_CACHE_PLUGIN="${ANSIBLE_CACHE_PLUGIN:-jsonfile}"
-export ANSIBLE_CACHE_PLUGIN_CONNECTION="${ANSIBLE_CACHE_PLUGIN_CONNECTION:-/etc/openstack_deploy/ansible_facts}"
+export ANSIBLE_CACHE_PLUGIN_CONNECTION="${ANSIBLE_CACHE_PLUGIN_CONNECTION:-${OSA_CONFIG_DIR}/ansible_facts}"
 export ANSIBLE_CACHE_PLUGIN_TIMEOUT="${ANSIBLE_CACHE_PLUGIN_TIMEOUT:-86400}"
 
 if [[ "${ANSIBLE_CACHE_PLUGIN}" == "memcached" ]];then

scripts/openstack-ansible.sh

@@ -38,17 +38,17 @@ if [[ "${PWD}" == *"OSA_CLONE_DIR"* ]] || [ "${RUN_CMD}" == "openstack-ansible"
   . /usr/local/bin/openstack-ansible.rc
 
   # Load userspace group vars
-  if [[ -d /etc/openstack_deploy/group_vars || -d /etc/openstack_deploy/host_vars ]]; then
-     if [[ ! -f /etc/openstack_deploy/inventory.ini ]]; then
-        echo '[all]' > /etc/openstack_deploy/inventory.ini
+  if [[ -d ${OSA_CONFIG_DIR}/group_vars || -d ${OSA_CONFIG_DIR}/host_vars ]]; then
+     if [[ ! -f ${OSA_CONFIG_DIR}/inventory.ini ]]; then
+        echo '[all]' > ${OSA_CONFIG_DIR}/inventory.ini
      fi
   fi
 
   # Check whether there are any user configuration files
-  if ls -1 /etc/openstack_deploy/user_*.yml &> /dev/null; then
+  if ls -1 ${OSA_CONFIG_DIR}/user_*.yml &> /dev/null; then
 
     # Discover the variable files.
-    VAR1="$(for i in $(ls /etc/openstack_deploy/user_*.yml); do echo -ne "-e @$i "; done)"
+    VAR1="$(for i in $(ls ${OSA_CONFIG_DIR}/user_*.yml); do echo -ne "-e @$i "; done)"
 
     # Provide information on the discovered variables.
     info "Variable files: \"${VAR1}\""