Switch default storage backend to file

Revert a change to allow the gnocchi_pip_requirements to be
tailored to the storage driver chosen. There is another bug
file to make that work.

defaults/main.yml

@@ -55,7 +55,7 @@ gnocchi_galera_address: "{{ galera_address }}"
 gnocchi_db_sync_options: "" 
 
 #: Storage info
-gnocchi_storage_driver: swift
+gnocchi_storage_driver: file
 gnocchi_coordination_url: "mysql://{{ gnocchi_galera_user }}:{{ gnocchi_galera_password }}@{{ gnocchi_galera_address }}/{{ gnocchi_galera_database }}?charset=utf8&timeout=5"
 
 #: Default Archive Policies
@@ -159,7 +159,8 @@ gnocchi_requires_pip_packages:
 
 #: Common pip packages
 gnocchi_pip_packages:
-  - "gnocchi[mysql,{{ gnocchi_storage_driver }}]"
+# FUTURE optimize after https://bugs.launchpad.net/openstack-ansible/+bug/1557682
+  - "gnocchi[mysql,file,swift,ceph]"
   - keystonemiddleware
   - gnocchiclient
   - python-memcached

ext/playbooks/os-gnocchi-install.yml

@@ -53,7 +53,7 @@
           - "lxc.mount.entry=/openstack/{{ container_name }} var/lib/gnocchi none bind 0 0"
       delegate_to: "{{ physical_host }}"
       when: >
-            (not is_metal | bool) and gnocchi_storage_driver is defined and
+            (not is_metal | bool) and gnocchi_storage_driver is not defined or
             (gnocchi_storage_driver == "file")
       register: container_extra_config
       tags:

templates/gnocchi.conf.j2

@@ -38,6 +38,44 @@ check_revocations_for_cached = False
 [storage]
 driver = {{ gnocchi_storage_driver }}
 coordination_url = {{ gnocchi_coordination_url }}
+{% if gnocchi_storage_driver == 'file' %}
+############
+## File Storage
+############
+file_basepath = /var/lib/gnocchi
+file_basepath_tmp = ${file_basepath}/tmp
+{% endif %}
+{% if gnocchi_storage_driver == 'swift' %}
+############
+## Swift Storage
+############
+swift_auth_version: 3
+swift_authurl: "{{ keystone_service_internalurl }}"
+swift_endpoint_type: internalURL
+swift_user: "{{ gnocchi_service_user_name }}"
+swift_key: "{{ gnocchi_service_password }}"
+swift_region_name: "{{ gnocchi_service_region }}"
+swift_project_domain_id: "{{ gnocchi_service_project_domain_id }}"
+swift_user_domain_id: "{{ gnocchi_service_user_domain_id }}"
+swift_tenant_name: "{{ gnocchi_service_project_name }}"
+swift_container_prefix: gnocchi
+{% endif %}
+{% if gnocchi_storage_driver == 'ceph' %}
+############
+## Ceph Storage
+############
+# Ceph pool name to use. (string value)
+#ceph_pool = gnocchi
+
+# Ceph username (ie: client.admin). (string value)
+#ceph_username = <None>
+
+# Ceph keyring path. (string value)
+#ceph_keyring = <None>
+
+# Ceph configuration file. (string value)
+#ceph_conffile = /etc/ceph/ceph.conf
+{% endif %}
 
 [metricd]
 # Number of workers for Gnocchi metric daemons. By default the available number
@@ -69,30 +107,6 @@ coordination_url = {{ gnocchi_coordination_url }}
 # Delay between flushes (floating point value)
 #flush_delay = <None>
 
-{% if gnocchi_storage_driver == 'file' %}
-############
-## File Storage
-############
-file_basepath = /var/lib/gnocchi
-file_basepath_tmp = ${file_basepath}/tmp
-{% endif %}
-{% if gnocchi_storage_driver == 'ceph' %}
-############
-## Ceph Storage
-############
-# Ceph pool name to use. (string value)
-#ceph_pool = gnocchi
-
-# Ceph username (ie: client.admin). (string value)
-#ceph_username = <None>
-
-# Ceph keyring path. (string value)
-#ceph_keyring = <None>
-
-# Ceph configuration file. (string value)
-#ceph_conffile = /etc/ceph/ceph.conf
-{% endif %}
-
 ############
 ## InfluxDB Storage
 ############