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I apologize, but setting up a physical replica of an Amazon RDS PostgreSQL instance outside of AWS is not directly supported or recommended. RDS is designed as a managed service, and certain low-level operations required for physical replication are restricted for security and management reasons.
However, there are alternative approaches you can consider to achieve your goal of having a local environment for data analysis and testing:
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Logical Replication: RDS for PostgreSQL supports logical replication starting from version 10.4. This method allows you to replicate specific tables or databases to an external PostgreSQL instance. To set this up:
- Enable logical replication by setting the 'rds.logical_replication' parameter to 1.
- Create a logical replication slot on your RDS instance.
- Use a client like pg_recvlogical to stream changes to your external PostgreSQL instance.
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Read Replica: You could create an RDS read replica in AWS and then use AWS Database Migration Service (DMS) to continuously replicate data from the read replica to an external PostgreSQL instance.
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Periodic Snapshots: Take regular snapshots of your RDS instance and restore them to a local PostgreSQL instance. This won't provide real-time data, but it can be useful for analysis and testing purposes.
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AWS DMS: Use AWS Database Migration Service to set up continuous replication from your RDS instance to an external PostgreSQL database.
For any of these methods, you'll need to ensure proper network connectivity and security settings between your AWS environment and your local infrastructure. This may involve configuring VPN connections or using AWS Direct Connect.
Remember that these alternatives may have limitations compared to physical replication, such as increased latency or potential data inconsistencies. Always consider the security implications of replicating your production data outside of AWS, and ensure you have appropriate measures in place to protect sensitive information.
If you need further assistance with implementing any of these solutions, please don't hesitate to ask for more detailed guidance.
Sources
Performing logical replication for Amazon RDS for PostgreSQL - Amazon Relational Database Service
Amazon RDS for PostgreSQL - Amazon Relational Database Service
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