Replica Set Maintenance Tutorials

The following tutorials provide information in maintaining existingreplica sets.

• Change the Size of the Oplog
• Increase the size of the oplog which logs operations. Inmost cases, the default oplog size is sufficient.
• Perform Maintenance on Replica Set Members
• Perform maintenance on a member of a replica set while minimizingdowntime.
• 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 newmember or resync the data on an existing member that has fallentoo 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 andwrite operations to specific members.
• Reconfigure a Replica Set with Unavailable Members
• Reconfigure a replica set when a majority of replica set membersare down or unreachable.
• Manage Chained Replication
• Disable or enable chained replication. Chained replication occurswhen a secondary replicates from another secondary instead of theprimary.
• Change Hostnames in a Replica Set
• Update the replica set configuration to reflect changes inmembers’ hostnames.
• Configure a Secondary’s Sync Target
• Specify the member that a secondary member synchronizes from.