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Document upgrade process from repmgr3

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Also provide unpackaged extension upgrade SQL, and a script to
assist converting repmgr.conf files.
This commit is contained in:
Ian Barwick
2017-08-17 23:37:31 +09:00
parent 5e019a65e7
commit 594e9e5007
7 changed files with 252 additions and 22 deletions
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28
repmgr--unpackaged--4.0.sql
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@@ -1,5 +1,5 @@
-- complain if script is sourced in psql, rather than via CREATE EXTENSION
-- \echo Use "CREATE EXTENSION repmgr" to load this file. \quit
\echo Use "CREATE EXTENSION repmgr" to load this file. \quit
-- extract the current schema name
-- NOTE: this assumes there will be only one schema matching 'repmgr_%';
@@ -12,18 +12,24 @@ SELECT nspname AS old_schema
WHERE nspname LIKE 'repmgr_%'
LIMIT 1;
DO $$
-- move old objects into new schema
DO $repmgr$
DECLARE
old_schema TEXT;
schema TEXT;
BEGIN
old_schema := SELECT old_schema FROM repmgr_old_schema;
ALTER SCHEMA RENAME TO repmgr;
END$$;
SELECT old_schema FROM repmgr_old_schema
INTO schema;
EXECUTE format('ALTER TABLE %I.repl_nodes SET SCHEMA repmgr', schema);
EXECUTE format('ALTER TABLE %I.repl_events SET SCHEMA repmgr', schema);
EXECUTE format('ALTER TABLE %I.repl_monitor SET SCHEMA repmgr', schema);
EXECUTE format('ALTER VIEW %I.repl_show_nodes SET SCHEMA repmgr', schema);
EXECUTE format('ALTER VIEW %I.repl_status SET SCHEMA repmgr', schema);
END$repmgr$;
-- convert "repmgr_$cluster.repl_nodes" to "repmgr.nodes"
CREATE TABLE nodes (
node_id INTEGER PRIMARY KEY,
upstream_node_id INTEGER NULL REFERENCES nodes (node_id) DEFERRABLE,
upstream_node_id INTEGER NULL REFERENCES repmgr.nodes (node_id) DEFERRABLE,
active BOOLEAN NOT NULL DEFAULT TRUE,
node_name TEXT NOT NULL,
type TEXT NOT NULL CHECK (type IN('primary','standby','bdr')),
@@ -44,11 +50,11 @@ SELECT id, upstream_node_id, active, name,
ORDER BY id;
-- convert "repmgr_$cluster.repl_event" to "repmgr.event"
-- convert "repmgr_$cluster.repl_event" to "event"
ALTER TABLE repl_events RENAME TO event;
ALTER TABLE repl_events RENAME TO events;
-- convert "repmgr_$cluster.repl_monitor" to "repmgr.monitor"
-- convert "repmgr_$cluster.repl_monitor" to "monitor"
ALTER TABLE repl_monitor RENAME TO monitor;
@@ -125,3 +131,5 @@ CREATE FUNCTION unset_bdr_failover_handler()
AS '$libdir/repmgr', 'unset_bdr_failover_handler'
LANGUAGE C STRICT;
-- remove temporary table
DROP TABLE repmgr_old_schema;