How do I reinitialize a replica set in MongoDB?
To reconfigure an existing replica set, first retrieve the current configuration with rs. conf() , modify the configuration document as needed, and then pass the modified document to rs. reconfig() . rs.
How do you reset a replica set?
To reset the configuration, make sure every node in your replica set is stopped. Then delete the “local” database for every node. Once you are confident all nodes are not running and the local database are gone, start the mongod process again (of course using the –replSet flag).
What is a MongoDB replica set?
A replica set in MongoDB is a group of mongod processes that maintain the same data set. Replica sets provide redundancy and high availability, and are the basis for all production deployments. This section introduces replication in MongoDB as well as the components and architecture of replica sets.
How do I change my replica set name?
To rename a replica set, you must shut down all members of the replica set, then configure each member’s local database with the new replica set name. This procedure requires downtime.
How do I remove replica set in Kubernetes?
To delete replicaset, all we have to do is run “kubectl delete replicaset myapp-replicas”. This command will delete the replicasets and the pods.
How do I uninstall MongoDB?
- Stop MongoDB. Stop the mongod process by issuing the following command: sudo service mongod stop.
- Remove Packages. ¶ Remove any MongoDB packages that you had previously installed. sudo yum erase $(rpm -qa | grep mongodb-enterprise)
- Remove Data Directories. ¶ Remove MongoDB databases and log files.
How do I delete a ReplicaSet?
To delete a ReplicaSet and all of its Pods, use kubectl delete . The Garbage collector automatically deletes all of the dependent Pods by default.
What is the purpose of the replica set?
A ReplicaSet’s purpose is to maintain a stable set of replica Pods running at any given time. As such, it is often used to guarantee the availability of a specified number of identical Pods.
How does replica set connect to MongoDB?
To connect to a replica set, include a seedlist of replica set members and the name of the replica set in the URI connection string. In the following example, the connection string specifies two of the replica set members running on localhost:27017 and localhost:27018 and the name of the replica set ( foo ).
What is replica set name in MongoDB compass?
Generally, the replica set name is the cluster name plus -shard-0 . i.e. cluster name test , replica set name is test-shard-0 . In the mongo shell – I executed rs. status() and copied the set name.
How do I delete replica sets?
How to remove members from replica set in MongoDB?
Use rs.remove () in either of the following forms to remove the member: MongoDB may disconnect the shell briefly if the replica set needs to elect a new primary. The shell then automatically reconnects in such cases.
How to remove multiple members from replica set?
To remove multiple voting members from the replica set, issue a series of rs.reconfig () operations to remove one member at a time. See Reconfiguration Can Add or Remove No More than One Voting Member at a Time for more information. Shut down the mongod instance for the member you wish to remove.
What happens when I Disconnect my shell from MongoDB?
MongoDB may disconnect the shell briefly if the replica set needs to elect a new primary. The shell then automatically reconnects in such cases. The shell may display a DBClientCursor::init call () failed error even though the command succeeds.
How to dump OpLog in MongoDB 3.2.10?
Using mongodb 3.2.10, no need to dump the oplog, just do this on the first member: Then restart the member. It’ll now still have it’s oplog, and it’s data. Just run: Where conf is the new conf.