Improve ceph-rgw compatibility with Swift API in Kolla-ansible

By default ceph-rgw is not completely comaptible with Swift API,
because of the restriction for Swift INFO API.[0]

The patch improve ceph-rgw compatibility with Swift API. It is
controlled by the option "ceph_rgw_compatibility" in
ansible/group_vars/all.yml.

After changing the option, run the "reconfigure" command to enable.

Closes-Bug: #1783456

[0] https://github.com/ceph/ceph/pull/17967

Change-Id: Ibf3eb52280e197965caef08a44ae226c4f884cb5
Signed-off-by: tone.zhang <tone.zhang@arm.com>

ansible/group_vars/all.yml

@@ -774,6 +774,10 @@ ceph_pool_type: "replicated"
 # Integrate Ceph Rados Object Gateway with OpenStack keystone
 enable_ceph_rgw_keystone: "no"
 
+# Enable/disable ceph-rgw compatibility with OpenStack Swift
+# Valid options are [ True, False ]
+ceph_rgw_compatibility: "False"
+
 ceph_cinder_pool_name: "volumes"
 ceph_cinder_backup_pool_name: "backups"
 ceph_glance_pool_name: "images"

ansible/roles/ceph/defaults/main.yml

@@ -63,9 +63,9 @@ partition_name_osd_data: "{{ 'KOLLA_CEPH_BSDATA' if ceph_osd_store_type == 'blue
 ####################
 ## Ceph_rgw_keystone
 ####################
-swift_admin_endpoint: "{{ admin_protocol }}://{{ kolla_internal_fqdn }}:{{ rgw_port }}/swift/v1"
-swift_internal_endpoint: "{{ internal_protocol }}://{{ kolla_internal_fqdn }}:{{ rgw_port }}/swift/v1"
-swift_public_endpoint: "{{ public_protocol }}://{{ kolla_external_fqdn }}:{{ rgw_port }}/swift/v1"
+swift_admin_endpoint: "{{ admin_protocol }}://{{ kolla_internal_fqdn }}:{{ rgw_port }}{{ '/' if ceph_rgw_compatibility|bool else '/swift/' }}v1"
+swift_internal_endpoint: "{{ internal_protocol }}://{{ kolla_internal_fqdn }}:{{ rgw_port }}{{ '/' if ceph_rgw_compatibility|bool else '/swift/' }}v1"
+swift_public_endpoint: "{{ public_protocol }}://{{ kolla_external_fqdn }}:{{ rgw_port }}{{ '/' if ceph_rgw_compatibility|bool else '/swift/' }}v1"
 
 ceph_rgw_keystone_user: "ceph_rgw"
 

ansible/roles/ceph/tasks/reconfigure.yml

@@ -224,3 +224,8 @@
   with_together:
     - "{{ ceph_rgw_container_envs.results }}"
     - "{{ ceph_rgw_check_results.results }}"
+
+- include_tasks: start_rgw_keystone.yml
+  when:
+    - ceph_rgw_container_envs.results
+    - enable_ceph_rgw_keystone | bool

ansible/roles/ceph/templates/ceph.conf.j2

@@ -43,4 +43,8 @@ rgw_keystone_accepted_roles = admin, {{ keystone_default_user_role }}
 {% endif %}
 keyring = /etc/ceph/ceph.client.radosgw.keyring
 log file = /var/log/kolla/ceph/client.radosgw.gateway.log
+{% if ceph_rgw_compatibility | bool %}
+rgw_swift_url_prefix = "/"
+rgw_enable_apis = swift,swift_auth,admin
+{% endif %}
 {% endif %}

doc/source/reference/ceph-guide.rst

@@ -187,6 +187,16 @@ RadosGW is optional, enable it in ``/etc/kolla/globals.yml``:
 
 .. end
 
+.. note::
+
+    By default RadosGW supports both Swift and S3 API, and it is not
+    completely compatible with Swift API. The option `ceph_rgw_compatibility`
+    in ``ansible/group_vars/all.yml`` can enable/disable the RadosGW
+    compatibility with Swift API completely. After changing the value, run the
+    "reconfigure“ command to enable.
+
+.. end
+
 Configure the Ceph store type in ``ansible/group_vars/all.yml``, the default
 value is ``bluestore`` in Rocky: