Ceph » Orchestrator

hi,
using centos8 can't add an host to the cluster via cephadm.
Following the docs i was able to boostrap a new cluster but asap i try to add another hosts i get an error

c8-oc-osd1 is my host I'm trying to add
c8-oc-admin is my admin node previously configured

so, when i try to add c8-oc-osd1:

[root@c8-oc-admin ceph]#  ssh-copy-id -f -i /etc/ceph/ceph.pub root@c8-oc-osd1
/usr/bin/ssh-copy-id: INFO: Source of key(s) to be installed: "/etc/ceph/ceph.pub" 
root@c8-oc-osd1's password: 

Number of key(s) added: 1

Now try logging into the machine, with:

ssh 'root@c8-oc-osd1'

and check to make sure that only the key(s) you wanted were added.

ok, then

[root@c8-oc-admin ceph]#  ceph orch host add c8-oc-osd1
Error ENOENT: Failed to connect to c8-oc-osd1 (c8-oc-osd1).  Check that the host is reachable and accepts connections using the cephadm SSH key
you may want to run: 
> ssh -F =(ceph cephadm get-ssh-config) -i =(ceph config-key get mgr/cephadm/ssh_identity_key) root@c8-oc-osd1

and

ssh -F =(ceph cephadm get-ssh-config) -i =(ceph config-key get mgr/cephadm/ssh_identity_key) root@c8-oc-osd1
-bash: syntax error near unexpected token `('