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When the database servers are installed in Replica Set mode they are configured for replication but without any information about the other member servers. This needs to be provided using the MongoDB replica set Initialise command. The command can be used to configure all member details in a single step. Use the command to apply the required settings for your architecture.
Primary, Secondary and Arbiter (PSA)
The example below configures a PSA architecture. You need to adjust the IP addresses and ports in the member list to match your setup.
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