This version of the documentation is archived and no longer supported.

Replica Set Configuration

You can access the configuration of a replica set using the rs.conf() method or the replSetGetConfig command.

Replica Set Configuration Document Example

The following document provides a representation of a replica set configuration document. The configuration of your replica set may include only a subset of these settings:

  _id: <string>,
  version: <int>,
  members: [
      _id: <int>,
      host: <string>,
      arbiterOnly: <boolean>,
      buildIndexes: <boolean>,
      hidden: <boolean>,
      priority: <number>,
      tags: <document>,
      slaveDelay: <int>,
      votes: <number>
  settings: {
    getLastErrorDefaults : <document>,
    chainingAllowed : <boolean>,
    getLastErrorModes : <document>,
    heartbeatTimeoutSecs: <int>

For a description of the replica set configuration settings, see Replica Set Configuration Fields.

To modify the configuration for a replica set, use the rs.reconfig() method, passing a configuration document to the method. See rs.reconfig() for more information.