Before you start: You'll need plenty of room for log storage and you should also be sure that you're using Postgres version 9.4 or newer.
We recommend that you have only one active Postgres CDC input.
Perform the following steps in your master database:
wal_levelto "logical" in your database configuration.
Restart the server.
Create a dedicated Logical Replication slot.
You must create a dedicated replication slot for Alooma. If any other processes use this replication slot, you risk losing data.
Log into postgresSql as a superuser and, using the test_decoding plugin, create a logical replication slot named: alooma_replication_slot
SELECT pg_create_logical_replication_slot('alooma_replication_slot', 'test_decoding');
Grant the necessary replication permission to your user to enable reading the logical replication slot:
ALTER user <user> with replication;
Log in as the user and verify you can read from the logical replication slot:
SELECT count(*) FROM pg_logical_slot_peek_changes('alooma_replication_slot', null, null);
And that's it! You're all set to finish connecting to Postgres.