Provides a wrapper around the
replSetSyncFrom, which allows administrators to temporarily override the default sync target for the current member. Specify the name of the member you want to replicate from in the form of
Only modify the default sync logic as needed, and always exercise
replSetSyncFrom will not affect an in-progress initial sync
operation. To affect the sync target for the initial sync, run
replSetSyncFrom operation before initial sync.
If you run
replSetSyncFrom during initial sync, MongoDB
produces no error messages, but the sync target will not change until
after the initial sync operation.
The member to sync from must be a valid source for data in the set. To sync from a member, the member must:
- Have data. It cannot be an arbiter, in startup or recovering mode, and must be able to answer data queries.
- Be accessible.
- Be a member of the same set in the replica set configuration.
- Build indexes with the
- A different member of the set, to prevent syncing from itself.
If you attempt to replicate from a member that is more than 10 seconds
behind the current member,
mongod will log a warning but will
still replicate from the lagging member.
If you run
replSetSyncFrom during initial sync, MongoDB produces no error
messages, but the sync target will not change until after the initial