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Removes the member described by the hostname parameter from the current replica set. This function will disconnect the shell briefly and forces a reconnection as the replica set renegotiates which member will be primary. As a result, the shell will display an error even if this command succeeds.
The rs.remove() method has the following parameter:
Parameter Type Description hostname string The hostname of a system in the replica set.
Before running the rs.remove() operation, it is good practice tos shut down the replica set member that you are removing.