Connect to AWS RDS/Aurora Postgres

Configure the parameter group

From the AWS console, configure the parameter group with the following values.

Aws has an excellent guide to enabling logical replication available. In short you will need to configure the following variables.

• rds.logical_replication -> 1
• max_wal_senders -> 6 (set this higher if you have more replicas)
• max_replication_slots -> 6 (set this higher if you have more replicas)
• wal_sender_timeout -> 0

Create the user

Create the database user that will connect to the database from Statetrace

CREATE ROLE <db_user> REPLICATION LOGIN;
CREATE USER <db_user>;
GRANT CONNECT ON DATABASE <db_name> TO <db_user>;
GRANT USAGE ON SCHEMA <schema_name> TO <db_user>;
GRANT SELECT ON DATABASE <database_name> TO <db_user>;
GRANT REFERENCES ON ALL TABLES IN SCHEMA <schema_name> TO <db_user>;

Configure Firewall

You will need to configure your security group so that statetrace can connect to the database.

Follow the AWS guide to configuring security groups.

Connect to Statetrace

Configure STATETRACE_INBOUND_CONFIG to connect to your RDS instance

inbounds:
  - name: "Postgres DB"
    database_type: "postgres"
    host: "mycluster.cluster-123456789012.us-east-1.rds.amazonaws.com"
    username: <db_user>
    password: <db_password>
    port: "5432"
    database: "postgres"
    publication: "statetrace"
    slot: "statetrace"