Replica Set Maintenance Tutorials¶

The following tutorials provide information in maintaining existing replica sets.

Change the Size of the Oplog: Increase the size of the oplog which logs operations. In most cases, the default oplog size is sufficient.
Perform Maintenance on Replica Set Members: Perform maintenance on a member of a replica set while minimizing downtime.
Force a Member to Become Primary: Force a replica set member to become primary.
Resync a Member of a Replica Set: Sync the data on a member. Either perform initial sync on a new member or resync the data on an existing member that has fallen too far behind to catch up by way of normal replication.
Configure Replica Set Tag Sets: Assign tags to replica set members for use in targeting read and write operations to specific members.
Reconfigure a Replica Set with Unavailable Members: Reconfigure a replica set when a majority of replica set members are down or unreachable.
Manage Chained Replication: Disable or enable chained replication. Chained replication occurs when a secondary replicates from another secondary instead of the primary.
Change Hostnames in a Replica Set: Update the replica set configuration to reflect changes in members’ hostnames.
Configure a Secondary’s Sync Target: Specify the member that a secondary member synchronizes from.