kolla-ansible opnestack,cinder.exception.NoValidBackend：找不到有效的后端

如何解决kolla-ansible opnestack,cinder.exception.NoValidBackend：找不到有效的后端

kolla-ansible (stable/ussuri) (openstack ussuri)
kolla-ansible 部署 openstack（四个节点，ubuntu18.04）
具有现有 ceph 的配置 cinder（已部署 cephadm，ceph 版本 15.2.8，章鱼（稳定））；

煤渣卷 | server1@ceph |新星|启用 |下|

如何解决这个问题，谢谢。

日志

(venv36) root@dev ~/kolla-ansible (stable/ussuri) $ cinder service-list
+------------------+------------------------+------+---------+-------+----------------------------+---------+-----------------+---------------+
| Binary           | Host                   | Zone | Status  | State | Updated_at                 | Cluster | disabled Reason | Backend State |
+------------------+------------------------+------+---------+-------+----------------------------+---------+-----------------+---------------+
| cinder-backup    | server1                | nova | enabled | up    | 2021-02-22T07:22:53.000000 | -       | -               |               |
| cinder-backup    | server2                | nova | enabled | up    | 2021-02-22T07:22:55.000000 | -       | -               |               |
| cinder-backup    | server3                | nova | enabled | up    | 2021-02-22T07:22:50.000000 | -       | -               |               |
| cinder-backup    | server4                | nova | enabled | up    | 2021-02-22T07:22:50.000000 | -       | -               |               |
| cinder-scheduler | server1                | nova | enabled | up    | 2021-02-22T07:22:49.000000 | -       | -               |               |
| cinder-scheduler | server2                | nova | enabled | up    | 2021-02-22T07:22:56.000000 | -       | -               |               |
| cinder-scheduler | server3                | nova | enabled | up    | 2021-02-22T07:22:53.000000 | -       | -               |               |
| cinder-volume    | server1@ceph           | nova | enabled | down  | 2021-02-22T01:21:03.000000 | -       | -               | -             |
| cinder-volume    | server1@rbd-1@rbd-1    | nova | enabled | down  | 2021-02-21T07:41:14.000000 | -       | -               | -             |
| cinder-volume    | storage1:volumes@rbd-1 | nova | enabled | down  | 2021-02-21T07:07:29.000000 | -       | -               | -             |
+------------------+------------------------+------+---------+-------+----------------------------+---------+-----------------+---------------+

tree /etc/kolla/
/etc/kolla/config/
├── cinder
│   ├── ceph.conf
│   ├── cinder-backup
│   │   ├── ceph.client.cinder-backup.keyring
│   │   └── ceph.client.cinder.keyring
│   ├── cinder-backup.conf
│   ├── cinder-volume
│   │   └── ceph.client.cinder.keyring
│   ├── cinder-volume.conf
│   └── cinder-volume.conf.bak
├── glance
│   ├── ceph.client.glance.keyring
│   ├── ceph.conf
│   └── glance-api.conf
└── nova
    ├── ceph.client.cinder.keyring
    ├── ceph.client.nova.keyring
    ├── ceph.conf
    └── nova-compute.conf

cinder_volume,cinder_scheduler logs as following:

2021-02-22 14:08:20.766 7 
ERROR cinder.scheduler.flows.create_volume 
[req-1e4cc16b-cace-4019-8ce5-9f543e758e77 2ff1ec3c53da405e90a71c993cf969eb c7675e760bbd498f9bc143cd165c4099 - 
default default] Failed to run task cinder.scheduler.flows.create_volume.ScheduleCreateVoluMetask;
volume:create: No valid backend was found. No weighed backends available: cinder.exception.NovalidBackend: 
No valid backend was found. No weighed backends available

(venv36) root@dev ~/kolla-ansible (stable/ussuri) $ cat /etc/kolla/config/cinder/cinder-volume.conf
[DEFAULT]
enabled_backends=ceph

[ceph]
rbd_ceph_conf=/etc/ceph/ceph.conf
rbd_user=cinder
rbd_pool=volumes
volume_backend_name=ceph
#backend_host=storage1:volumes
backend_host=server1
volume_driver=cinder.volume.drivers.rbd.RBDDriver
rbd_secret_uuid = 67ca7759-ea2b-4bd0-9464-d771382b13c7