All; The overall issue has been resolved. There were two major causes: Misplacement of keyring(s) (they were not within /etc/ceph/) 'openstack-cinder-volume' service was not started/enabled Thank you, Stephen Self IT Manager sself(a)performair.com 463 South Hamilton Court Gilbert, Arizona 85233 Phone: (480) 610-3500 Fax: (480) 610-3501 www.performair.com -----Original Message----- From: SSelf(a)performair.com [mailto:SSelf@performair.com] Sent: Thursday, January 7, 2021 2:21 PM To: ceph-users(a)ceph.io; openstack-discuss(a)lists.openstack.org Subject: [ceph-users] [cinder] Cinder & Ceph Integration Error: No Valid Backend All; We're having problems with our Openstack/Ceph integration. The versions we're using are Ussuri & Nautilus. When trying to create a volume, the volume is created, though the status is stuck at 'ERROR'. This appears to be the most relevant line from the Cinder scheduler.log: 2021-01-07 14:00:38.473 140686 ERROR cinder.scheduler.flows.create_volume [req-f86556b5-cb2e-4b2d-b556-ed07e632289d 824c26c133b34d8b8e84a7acabbe6f91 a983323b5ffc47e18660794cd9344869 - 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 Here is the 'cinder.conf' from our Controller Node: [DEFAULT] # define own IP address my_ip = 10.0.80.40 log_dir = /var/log/cinder state_path = /var/lib/cinder auth_strategy = keystone enabled_backends = ceph glance_api_version = 2 debug = true # RabbitMQ connection info transport_url = rabbit://openstack:<password>@10.0.80.40:5672 enable_v3_api = True # MariaDB connection info [database] connection = mysql+pymysql://cinder:<password>@10.0.80.40/cinder # Keystone auth info [keystone_authtoken] www_authenticate_uri = http://10.0.80.40:5000 auth_url = http://10.0.80.40:5000 memcached_servers = 10.0.80.40:11211 auth_type = password project_domain_name = default user_domain_name = default project_name = service username = cinder password = <password> [oslo_concurrency] lock_path = $state_path/tmp [ceph] volume_driver = cinder.volume.drivers.rbd.RBDDriver volume_backend_name = ceph rbd_pool = rbd_os_volumes rbd_ceph_conf = /etc/ceph/463/ceph.conf rbd_flatten_volume_from_snapshot = false rbd_max_clone_depth = 5 rbd_store_chunk_size = 4 rados_connect_timeout = -1 rbd_user = cinder rbd_exclusive_cinder_pool = true backup_driver = cinder.backup.drivers.ceph backup_ceph_conf = /etc/ceph/300/ceph.conf backup_ceph_user = cinder-backup backup_ceph_chunk_size = 134217728 backup_ceph_pool = rbd_os_backups backup_ceph_stripe_unit = 0 backup_ceph_stripe_count = 0 restore_discard_excess_bytes = true Does anyone have any ideas as to what is going wrong? Thank you, Stephen Self IT Manager Perform Air International sself(a)performair.com www.performair.com _______________________________________________ ceph-users mailing list -- ceph-users(a)ceph.io To unsubscribe send an email to ceph-users-leave(a)ceph.io