Moving a host between clusters can be accomplished by:

1. Decommissioning the host (see Decommissioning Role Instances).
2. Removing all roles from the host (except for the Cloudera Manager management roles). See Deleting Role Instances.
3. Deleting the host from the cluster (see Deleting Hosts), specifically the section on removing a host from a cluster but leaving it available to Cloudera Manager.
4. Adding the host to the new cluster (see Adding a Host to the Cluster).
5. Adding roles to the host (optionally using one of the host templates associated with the new cluster). See Adding a Role Instance and Host Templates.