Connecting to a replica set is not fundamentally different to connecting to a single server. In this section, we will show some examples using the official mongo-ruby-driver.
First we need to set our host and options objects:
client_host = ['hostname:port']
client_options = {
database: 'signals',
replica_set: 'xmr_btc'
}
In the preceding example, we are getting ready to connect to host:port hostname, in database signals in the replica_set xmr_btc.
Calling the initializer on Mongo::Client will now return a client object that contains a connection to our replica set and database:
client = Mongo::Client.new(client_host, client_options)
The client object then has the same options as it has when connecting to a single server.
MongoDB uses auto-discovery after connecting to our client_host to identify the other members of our replica...
