login into one ceph monitor node and create a new recovey client:
you can do it with the client.admin but i prefer to create a seperate recovery client.
cephadm docker host:
ceph -n mon. --keyring /var/lib/ceph/<fsid>/mon/<mon-name>/keyring get-or-create client.recovery mon 'allow *' mds 'allow *' mgr 'allow *' osd 'allow *'
ceph standard host:
ceph -n mon. --keyring /var/lib/ceph/mon/<mon-name>/keyring get-or-create client.recovery mon 'allow *' mds 'allow *' mgr 'allow *' osd 'allow *'
install ceph-common:
apt install ceph-common
create two files:
/etc/ceph/ceph.conf
[global]
fsid=<you find the ceph_fsid file in each path of osd, mon or mgr>
mon_host = [v2:<ip addr of the active ceph monitor>;:3300/0,v1:<ip addr of the active ceph monitor>:6789/0]
/etc/ceph/ceph.client.recovery.keyring (add the output of the ceph get-or-create command. replace the : with = and set the name in [])