How to Backup MongoDB replica set?

How to Backup MongoDB replica set?

Start a mongod instance as a new single-node replica set. Specify the path to the backup data files with –dbpath option and the replica set name with the –replSet option. For config server replica set (CSRS), include the –configsvr option. Include any other options as appropriate for your deployment.

How to restore oplog in MongoDB?

Recover a database

1. Dump the MongoDB Oplog to a folder (e.g. ~/oplog): mongodump -u root –authenticationDatabase admin -d local -c oplog.rs -o ~/oplog.
2. Create a copy of the dump file to ensure you can manipulate it safely: mkdir ~/oplog2 && cp ~/oplog/local/oplog.rs.bson ~/oplog2/oplog.bson.

How do I restore from Google Cloud Backup?

To restore from a backup:

1. (Recommended) Disable Cloud Datastore writes for your application.
2. Go to the Admin page.
3. Click Open Datastore Admin.
4. In the list of available backups, select the backup that you want to restore from.
5. Click Restore.

How do I recover data from the cloud?

Go to Settings > General > Reset, then tap Erase All Content and Settings. On the Apps & Data screen, tap Restore from iCloud Backup, then sign in with your Apple ID. Proceed to “Choose backup”, then choose from a list of available backups in iCloud.

How to determine which replication is the preferred backup?

To determine whether the current replica is the preferred backup replica, use the sys.fn_hadr_backup_is_preferred_replica function in your backup script. If the availability replica that is hosted by the current server instance is the preferred replica for backups, this function returns 1. If not, the function returns 0.

What does it mean to restore a SYSVOL replica?

These events indicate that the membership of the SYSVOL replica set has been established on the domain controller that is configured for the authoritative restore.

Is there a way to restore a replica of MongoDB?

If you copy the data set to each mongod instance and then create the replica set, MongoDB will force the secondaries to perform an initial sync. The procedures in this document describe the correct and efficient ways to deploy a restored replica set. You can also use mongorestore to restore database files using data created with mongodump.

When to delete files from outbound replication?

When outbound replication has occurred, files in the pre-existing folder can be deleted to free additional drive space. Authoritative restores are used as a last resort in case of critical situations such as divergence of data on the content set caused by directory collisions.