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https://github.com/EnterpriseDB/repmgr.git
synced 2026-03-22 22:56:29 +00:00
Fix extension script for unpackaged upgrades to 5.2
Apparently "ALTER TABLE" (which we were using to convert the "repl_events" table) does not mark the table as being part of the extension. Instead, we need to create the new table and copy the data, as is done with the other tables.
This commit is contained in:
Ian Barwick
244
repmgr--unpackaged--5.2.sql
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244
repmgr--unpackaged--5.2.sql
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-- complain if script is sourced in psql, rather than via CREATE EXTENSION
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\echo Use "CREATE EXTENSION repmgr" to load this file. \quit
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-- extract the current schema name
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-- NOTE: this assumes there will be only one schema matching 'repmgr_%';
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-- user is responsible for ensuring this is the case
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CREATE TEMPORARY TABLE repmgr_old_schema (schema_name TEXT);
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INSERT INTO repmgr_old_schema (schema_name)
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SELECT nspname AS schema_name
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FROM pg_catalog.pg_namespace
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WHERE nspname LIKE 'repmgr_%'
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LIMIT 1;
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-- move old objects into new schema
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DO $repmgr$
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DECLARE
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old_schema TEXT;
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BEGIN
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SELECT schema_name FROM repmgr_old_schema
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INTO old_schema;
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EXECUTE format('ALTER TABLE %I.repl_nodes SET SCHEMA repmgr', old_schema);
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EXECUTE format('ALTER TABLE %I.repl_events SET SCHEMA repmgr', old_schema);
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EXECUTE format('ALTER TABLE %I.repl_monitor SET SCHEMA repmgr', old_schema);
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EXECUTE format('DROP VIEW IF EXISTS %I.repl_show_nodes', old_schema);
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EXECUTE format('DROP VIEW IF EXISTS %I.repl_status', old_schema);
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END$repmgr$;
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-- convert "repmgr_$cluster.repl_nodes" to "repmgr.nodes"
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CREATE TABLE repmgr.nodes (
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node_id INTEGER PRIMARY KEY,
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upstream_node_id INTEGER NULL REFERENCES repmgr.nodes (node_id) DEFERRABLE,
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active BOOLEAN NOT NULL DEFAULT TRUE,
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node_name TEXT NOT NULL,
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type TEXT NOT NULL CHECK (type IN('primary','standby','witness','bdr')),
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location TEXT NOT NULL DEFAULT 'default',
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priority INT NOT NULL DEFAULT 100,
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conninfo TEXT NOT NULL,
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repluser VARCHAR(63) NOT NULL,
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slot_name TEXT NULL,
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config_file TEXT NOT NULL
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);
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INSERT INTO repmgr.nodes
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(node_id, upstream_node_id, active, node_name, type, location, priority, conninfo, repluser, slot_name, config_file)
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SELECT id, upstream_node_id, active, name,
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CASE WHEN type = 'master' THEN 'primary' ELSE type END,
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'default', priority, conninfo, 'unknown', slot_name, 'unknown'
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FROM repmgr.repl_nodes
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ORDER BY id;
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-- convert "repmgr_$cluster.repl_event" to "event"
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CREATE TABLE repmgr.events (
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node_id INTEGER NOT NULL,
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event TEXT NOT NULL,
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successful BOOLEAN NOT NULL DEFAULT TRUE,
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event_timestamp TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP,
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details TEXT NULL
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);
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INSERT INTO repmgr.events
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(node_id, event, successful, event_timestamp, details)
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SELECT node_id, event, successful, event_timestamp, details
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FROM repmgr.repl_events;
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-- create new table "repmgr.voting_term"
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CREATE TABLE repmgr.voting_term (
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term INT NOT NULL
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);
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CREATE UNIQUE INDEX voting_term_restrict
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ON repmgr.voting_term ((TRUE));
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CREATE RULE voting_term_delete AS
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ON DELETE TO repmgr.voting_term
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DO INSTEAD NOTHING;
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INSERT INTO repmgr.voting_term (term) VALUES (1);
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-- convert "repmgr_$cluster.repl_monitor" to "monitoring_history"
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CREATE TABLE repmgr.monitoring_history (
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primary_node_id INTEGER NOT NULL,
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standby_node_id INTEGER NOT NULL,
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last_monitor_time TIMESTAMP WITH TIME ZONE NOT NULL,
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last_apply_time TIMESTAMP WITH TIME ZONE,
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last_wal_primary_location PG_LSN NOT NULL,
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last_wal_standby_location PG_LSN,
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replication_lag BIGINT NOT NULL,
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apply_lag BIGINT NOT NULL
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);
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INSERT INTO repmgr.monitoring_history
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(primary_node_id, standby_node_id, last_monitor_time, last_apply_time, last_wal_primary_location, last_wal_standby_location, replication_lag, apply_lag)
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SELECT primary_node, standby_node, last_monitor_time, last_apply_time, last_wal_primary_location::pg_lsn, last_wal_standby_location::pg_lsn, replication_lag, apply_lag
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FROM repmgr.repl_monitor;
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CREATE INDEX idx_monitoring_history_time
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ON repmgr.monitoring_history (last_monitor_time, standby_node_id);
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CREATE VIEW repmgr.show_nodes AS
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SELECT n.node_id,
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n.node_name,
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n.active,
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n.upstream_node_id,
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un.node_name AS upstream_node_name,
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n.type,
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n.priority,
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n.conninfo
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FROM repmgr.nodes n
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LEFT JOIN repmgr.nodes un
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ON un.node_id = n.upstream_node_id;
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/* ================= */
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/* repmgrd functions */
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/* ================= */
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/* monitoring functions */
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CREATE FUNCTION set_local_node_id(INT)
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RETURNS VOID
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AS 'MODULE_PATHNAME', 'set_local_node_id'
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LANGUAGE C STRICT;
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CREATE FUNCTION get_local_node_id()
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RETURNS INT
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AS 'MODULE_PATHNAME', 'get_local_node_id'
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LANGUAGE C STRICT;
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CREATE FUNCTION standby_set_last_updated()
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RETURNS TIMESTAMP WITH TIME ZONE
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AS 'MODULE_PATHNAME', 'standby_set_last_updated'
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LANGUAGE C STRICT;
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CREATE FUNCTION standby_get_last_updated()
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RETURNS TIMESTAMP WITH TIME ZONE
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AS 'MODULE_PATHNAME', 'standby_get_last_updated'
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LANGUAGE C STRICT;
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CREATE FUNCTION set_upstream_last_seen(INT)
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RETURNS VOID
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AS 'MODULE_PATHNAME', 'set_upstream_last_seen'
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LANGUAGE C STRICT;
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CREATE FUNCTION get_upstream_last_seen()
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RETURNS INT
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AS 'MODULE_PATHNAME', 'get_upstream_last_seen'
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LANGUAGE C STRICT;
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CREATE FUNCTION get_upstream_node_id()
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RETURNS INT
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AS 'MODULE_PATHNAME', 'get_upstream_node_id'
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LANGUAGE C STRICT;
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CREATE FUNCTION set_upstream_node_id(INT)
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RETURNS VOID
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AS 'MODULE_PATHNAME', 'set_upstream_node_id'
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LANGUAGE C STRICT;
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/* failover functions */
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CREATE FUNCTION notify_follow_primary(INT)
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RETURNS VOID
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AS 'MODULE_PATHNAME', 'notify_follow_primary'
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LANGUAGE C STRICT;
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CREATE FUNCTION get_new_primary()
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RETURNS INT
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AS 'MODULE_PATHNAME', 'get_new_primary'
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LANGUAGE C STRICT;
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CREATE FUNCTION reset_voting_status()
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RETURNS VOID
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AS 'MODULE_PATHNAME', 'reset_voting_status'
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LANGUAGE C STRICT;
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CREATE FUNCTION get_repmgrd_pid()
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RETURNS INT
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AS 'MODULE_PATHNAME', 'get_repmgrd_pid'
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LANGUAGE C STRICT;
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CREATE FUNCTION get_repmgrd_pidfile()
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RETURNS TEXT
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AS 'MODULE_PATHNAME', 'get_repmgrd_pidfile'
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LANGUAGE C STRICT;
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CREATE FUNCTION set_repmgrd_pid(INT, TEXT)
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RETURNS VOID
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AS 'MODULE_PATHNAME', 'set_repmgrd_pid'
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LANGUAGE C CALLED ON NULL INPUT;
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CREATE FUNCTION repmgrd_is_running()
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RETURNS BOOL
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AS 'MODULE_PATHNAME', 'repmgrd_is_running'
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LANGUAGE C STRICT;
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CREATE FUNCTION repmgrd_pause(BOOL)
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RETURNS VOID
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AS 'MODULE_PATHNAME', 'repmgrd_pause'
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LANGUAGE C STRICT;
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CREATE FUNCTION repmgrd_is_paused()
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RETURNS BOOL
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AS 'MODULE_PATHNAME', 'repmgrd_is_paused'
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LANGUAGE C STRICT;
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CREATE FUNCTION get_wal_receiver_pid()
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RETURNS INT
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AS 'MODULE_PATHNAME', 'get_wal_receiver_pid'
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LANGUAGE C STRICT;
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/* views */
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CREATE VIEW repmgr.replication_status AS
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SELECT m.primary_node_id, m.standby_node_id, n.node_name AS standby_name,
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n.type AS node_type, n.active, last_monitor_time,
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CASE WHEN n.type='standby' THEN m.last_wal_primary_location ELSE NULL END AS last_wal_primary_location,
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m.last_wal_standby_location,
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CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.replication_lag) ELSE NULL END AS replication_lag,
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CASE WHEN n.type='standby' THEN
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CASE WHEN replication_lag > 0 THEN age(now(), m.last_apply_time) ELSE '0'::INTERVAL END
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ELSE NULL
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END AS replication_time_lag,
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CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.apply_lag) ELSE NULL END AS apply_lag,
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AGE(NOW(), CASE WHEN pg_catalog.pg_is_in_recovery() THEN repmgr.standby_get_last_updated() ELSE m.last_monitor_time END) AS communication_time_lag
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FROM repmgr.monitoring_history m
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JOIN repmgr.nodes n ON m.standby_node_id = n.node_id
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WHERE (m.standby_node_id, m.last_monitor_time) IN (
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SELECT m1.standby_node_id, MAX(m1.last_monitor_time)
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FROM repmgr.monitoring_history m1 GROUP BY 1
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);
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/* drop old tables */
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DROP TABLE repmgr.repl_nodes;
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DROP TABLE repmgr.repl_monitor;
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-- remove temporary table
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DROP TABLE repmgr_old_schema;
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