hi, if you follow the latest install guide here <https://docs.ceph.com/en/latest/cephadm/install/> to install pacific release, the bootstrap command will print the following error message: .... ...... mgr epoch 13 is available Generating a dashboard self-signed certificate... Creating initial admin user... Fetching dashboard port number... Ceph Dashboard is now available at: URL: https://ceph-1:8443/ User: admin Password: xxx Enabling client.admin keyring and conf on hosts with "admin" label Non-zero exit code 22 from /usr/bin/docker run --rm --ipc=host --stop-signal=SIGTERM --net=host --entrypoint /usr/bin/ceph --init -e CONTAINER_IMAGE=docker.io/ceph/ceph:v16 -e NODE_NAME=tikal-ceph-1 -e CEPH_USE_RANDOM_NONCE=1 -v /var/log/ceph/d6c1ba28-cd0d-11eb-8b39-960000bd038e:/var/log/ceph:z -v /tmp/ceph-tmp9t3y8y39:/etc/ceph/ceph.client.admin.keyring:z -v /tmp/ceph-tmpaepq1rte:/etc/ceph/ceph.conf:z docker.io/ceph/ceph:v16 orch client-keyring set client.admin label:_admin /usr/bin/ceph: stderr Invalid command: client-keyring not in start|stop|restart|redeploy|reconfig /usr/bin/ceph: stderr orch start|stop|restart|redeploy|reconfig <service_name> : Start, stop, restart, redeploy, or reconfig an entire service (i.e. all daemons) /usr/bin/ceph: stderr Error EINVAL: invalid command Unable to set up "admin" label; assuming older version of Ceph ...... .... As a result the first node is not working correctly and you can not add mom hosts. I tried to set the label manually afterwards with : # ceph orch host label add ceph-1 _admin But this seems to have no effect. Is this problem known? So only solution seems to stay with the octopus release :-/ === Ralph