$ juju status cinder-ceph-b --relations Model Controller Cloud/Region Version SLA Timestamp site-a serverstack serverstack/serverstack 2.8.9 unsupported 20:31:42Z App Version Status Scale Charm Store Rev OS Notes cinder 17.0.1 active 1 cinder jujucharms 308 ubuntu exposed cinder-ceph-a 17.0.1 active 0 cinder-ceph jujucharms 260 ubuntu cinder-ceph-b 17.0.1 blocked 1 cinder-ceph jujucharms 260 ubuntu cinder-mysql-router 8.0.23 active 0 mysql-router jujucharms 6 ubuntu Unit Workload Agent Machine Public address Ports Message cinder/0* active idle 6 10.5.0.3 8776/tcp Unit is ready cinder-ceph-a/0* active idle 10.5.0.3 Unit is ready cinder-ceph-b/0* blocked idle 10.5.0.3 Missing relations: nova-compute, ceph cinder-mysql-router/0* active idle 10.5.0.3 Unit is ready Machine State DNS Inst id Series AZ Message 6 started 10.5.0.3 4ee0f5c9-7e0b-4948-8182-2ba8e0f42df3 focal nova ACTIVE Relation provider Requirer Interface Type Message cinder-ceph-a:storage-backend cinder:storage-backend cinder-backend subordinate cinder-ceph-b:ceph-access nova-compute:ceph-access cinder-ceph-key regular <<========== HERE cinder-ceph-b:storage-backend cinder:storage-backend cinder-backend subordinate cinder-mysql-router:shared-db cinder:shared-db mysql-shared subordinate cinder:cinder-volume-service nova-cloud-controller:cinder-volume-service cinder regular cinder:cluster cinder:cluster cinder-ha peer glance:image-service cinder:image-service glance regular keystone:identity-service cinder:identity-service keystone regular rabbitmq-server:amqp cinder:amqp rabbitmq regular vault:certificates cinder:certificates tls-certificates regular