PGlogical Replication Installing and Configuring.

Installing and Configuring PGlogical Replication for Database: classicdba

PGlogical is a PostgreSQL extension that provides logical streaming replication. It allows you to replicate data between PostgreSQL databases in a more flexible and fine-grained manner than physical replication. This guide will take you through the steps to install and configure PGlogical for the database classicdba.

Installing PGlogical

Step 1: Install PGlogical Extension

First, you need to add the PGDG repository and install the PGlogical extension.

Replace <version> with your PostgreSQL version (e.g., 13, 12).

Configuring PGlogical

Step 1: Enable PGlogical in PostgreSQL Configuration

Edit the PostgreSQL configuration file (postgresql.conf) to enable the PGlogical extension.

Add the following settings:

Save the file and reload PostgreSQL to apply the changes.

Step 2: Create PGlogical Extension in Database

Connect to the classicdba database and create the PGlogical extension.

Step 3: Configure PGlogical Node

Configure the provider and subscriber nodes. For this example, we will set up classicdba as both provider and subscriber.

First, create a provider node:

Next, create a subscriber node:

Creating and Subscribing to Replication Sets

Step 1: Create a Replication Set

Create a replication set on the provider node. This set will include all tables in the classicdba database.

Add tables to the replication set. For simplicity, we will add all tables:

Step 2: Create Subscription

Create a subscription on the subscriber node to receive data from the provider node.

Monitoring PGlogical Replication

Check the status of your replication setup by querying the PGlogical status views.

This will display the status of your subscriptions and help ensure everything is working correctly.

By following these steps, you can successfully install and configure PGlogical for logical replication in your PostgreSQL classicdba database. This setup allows for flexible and efficient replication between PostgreSQL databases.

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