Mongodb-replication Replica Set Arbiter

The polling node does not contain a copy of the replica set dataset and cannot be promoted to the primary node. There may be multiple voting nodes in the replication set to vote for the main election node. A polling node can be a replica set that exists in an even number of nodes without adding new nodes to the dataset.

Example:

In the following replication set, a polling node can be added to the replication set to achieve the even votes required during the election process:

Security Authentication

If authorization is turned on, the hop-ticket node authenticates with the other nodes in the replication set in the form of a certificate. The identity authentication of MongoDB is encrypted. MongoDB authentication is done interactively via a password.

Communication

Voting nodes interact with other nodes in the replication set: voting, heartbeat detection, and configuration data for the election process. These interactions are not encrypted. However, if MongoDB is deployed through SSL, all traffic to the dataset node is encrypted.

Mongodb-replication Replica Set Arbiter