Hello, Please help: CEPH cluster using docker. using below command for the bootstrap with provided key and pub cephadm -v bootstrap --mon-ip <ip> --allow-overwrite --ssh-private-key id_ed25519 --ssh-public-key id_ed25519.pub able to ssh directly with id_ed25519 key. RuntimeError: Failed command: /usr/bin/docker run --rm --ipc=host --stop-signal=SIGTERM --ulimit nofile=1048576 --net=host --entrypoint /usr/bin/ceph --init -e CONTAINER_IMAGE=quay.io/ceph/ceph:v18 -e NODE_NAME=<hostname> -e CEPH_USE_RANDOM_NONCE=1 -v /var/log/ceph/85c044a8-1d82-11ef-9ea1-a73759ab75e5:/var/log/ceph:z -v /tmp/ceph-tmp1sw6a5s0:/etc/ceph/ceph.client.admin.keyring:z -v /tmp/ceph-tmpethxlwxr:/etc/ceph/ceph.conf:z quay.io/ceph/ceph:v18 orch host add <hostname> <ip>: Error EINVAL: check-host failed: Unable to write <host>:/var/lib/ceph/85c044a8-1d82-11ef-9ea1-a73759ab75e5/cephadm.2b9d7d139a9cb40289f2358faf49a109fc297c0a258bde893227c262c30bca8d: Session request failed also validated below and it was successful:

ceph cephadm get-ssh-config > ssh_config ceph config-key get mgr/cephadm/ssh_identity_key > key ssh -F ssh_config -i key root@<hostname>

--- root@<hostname>:~/.ssh# ceph orch host add <hostname> <ip> Error EINVAL: check-host failed: Unable to write <hostname>:/var/lib/ceph/fe8ecd30-1da2-11ef-9ea1-a73759ab75e5/cephadm.2b9d7d139a9cb40289f2358faf49a109fc297c0a258bde893227c262c30bca8d: Session request failed root@<hostname>:~/.ssh# Thanks, Surya