Then, run bootstrap referencing this file::
cephadm bootstrap -c /root/ceph.conf ...
+
+
+.. _cephadm-removing-hosts:
+
+Removing Hosts
+==============
+
+If the node that want you to remove is running OSDs, make sure you remove the OSDs from the node.
+
+To remove a host from a cluster, do the following:
+
+For all Ceph service types, except for ``node-exporter`` and ``crash``, remove
+the host from the placement specification file (for example, cluster.yml).
+For example, if you are removing the host named host2, remove all occurrences of
+``- host2`` from all ``placement:`` sections.
+
+Update:
+
+.. code-block:: yaml
+
+ service_type: rgw
+ placement:
+ hosts:
+ - host1
+ - host2
+
+To:
+
+.. code-block:: yaml
+
+
+ service_type: rgw
+ placement:
+ hosts:
+ - host1
+
+Remove the host from cephadm's environment:
+
+.. code-block:: bash
+
+ ceph orch host rm host2
+
+See also :ref:`orchestrator-cli-host-management`.
+
+If the host is running ``node-exporter`` and crash services, remove them by running
+the following command on the host:
+
+.. code-block:: bash
+
+ cephadm rm-daemon --fsid CLUSTER_ID --name SERVICE_NAME