postgres_settings_replication.sql

--
--  Author: Hari Sekhon
--  Date: 2020-08-06 18:07:25 +0100 (Thu, 06 Aug 2020)
--
--  vim:ts=4:sts=4:sw=4:et:filetype=sql
--
--  https://github.com/HariSekhon/SQL-scripts
--
--  License: see accompanying Hari Sekhon LICENSE file
--
--  If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
--
--  https://www.linkedin.com/in/HariSekhon
--

-- Show PostgreSQL Replication settings
--
-- eg. hot_standby, max_replication_slots, max_wal_senders etc.
--
-- Requires PostgreSQL 9.5+
--
-- Tested on PostgreSQL 9.5, 9.6, 10.x 11.x, 12.x, 13.0

-- https://www.postgresql.org/docs/12/runtime-config-replication.html

SELECT
    name,
    setting,
    -- category,
    vartype,
    short_desc,
    -- enumvals,
    source,
    min_val,
    max_val,
    boot_val,
    reset_val,
    -- not available on PostgreSQL < 9.5
    pending_restart
FROM
    pg_settings
WHERE
    -- Replication / Standby Servers
    -- Replication / Sending Servers
    -- Replication / Master Server
    -- Replication / Subscribers
    -- Replication
    category ILIKE '%Replication%';