rs.addArb()¶

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Description¶

rs.addArb(host)¶

Adds a new arbiter to an existing replica set.

Warning

In general, avoid deploying more than one arbiter per replica set.

The rs.addArb() method takes the following parameter:

Parameter	Type	Description
`host`	string	Specifies the hostname and optionally the port number of the arbiter member to add to replica set.

For the following MongoDB versions, pv1 increases the likelihood of w:1 rollbacks compared to pv0 for replica sets with arbiters:

← rs.add() rs.conf() →