diff --git a/repmgr--4.0-4.1.sql b/repmgr--4.0-4.1.sql new file mode 100644 index 00000000..aeed09f5 --- /dev/null +++ b/repmgr--4.0-4.1.sql @@ -0,0 +1,8 @@ +-- complain if script is sourced in psql, rather than via CREATE EXTENSION +\echo Use "CREATE EXTENSION repmgr" to load this file. \quit + +ALTER TABLE repmgr.nodes + DROP CONSTRAINT nodes_type_check, + ADD CONSTRAINT nodes_type_check CHECK (type IN('primary','standby','witness','bdr','bdr_standby')); + + type TEXT NOT NULL CHECK (type IN('primary','standby','witness','bdr','bdr_standby')), diff --git a/repmgr--4.1.sql b/repmgr--4.1.sql new file mode 100644 index 00000000..c05a6fb2 --- /dev/null +++ b/repmgr--4.1.sql @@ -0,0 +1,167 @@ +-- complain if script is sourced in psql, rather than via CREATE EXTENSION +\echo Use "CREATE EXTENSION repmgr" to load this file. \quit + +CREATE TABLE repmgr.nodes ( + node_id INTEGER PRIMARY KEY, + upstream_node_id INTEGER NULL REFERENCES nodes (node_id) DEFERRABLE, + active BOOLEAN NOT NULL DEFAULT TRUE, + node_name TEXT NOT NULL, + type TEXT NOT NULL CHECK (type IN('primary','standby','witness','bdr','bdr_standby')), + location TEXT NOT NULL DEFAULT 'default', + priority INT NOT NULL DEFAULT 100, + conninfo TEXT NOT NULL, + repluser VARCHAR(63) NOT NULL, + slot_name TEXT NULL, + config_file TEXT NOT NULL +); + +CREATE TABLE repmgr.events ( + node_id INTEGER NOT NULL, + event TEXT NOT NULL, + successful BOOLEAN NOT NULL DEFAULT TRUE, + event_timestamp TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT CURRENT_TIMESTAMP, + details TEXT NULL +); + +DO $repmgr$ +DECLARE + DECLARE server_version_num INT; +BEGIN + SELECT setting + FROM pg_catalog.pg_settings + WHERE name = 'server_version_num' + INTO server_version_num; + IF server_version_num >= 90400 THEN + EXECUTE $repmgr_func$ +CREATE TABLE repmgr.monitoring_history ( + primary_node_id INTEGER NOT NULL, + standby_node_id INTEGER NOT NULL, + last_monitor_time TIMESTAMP WITH TIME ZONE NOT NULL, + last_apply_time TIMESTAMP WITH TIME ZONE, + last_wal_primary_location PG_LSN NOT NULL, + last_wal_standby_location PG_LSN, + replication_lag BIGINT NOT NULL, + apply_lag BIGINT NOT NULL +) + $repmgr_func$; + ELSE + EXECUTE $repmgr_func$ +CREATE TABLE repmgr.monitoring_history ( + primary_node_id INTEGER NOT NULL, + standby_node_id INTEGER NOT NULL, + last_monitor_time TIMESTAMP WITH TIME ZONE NOT NULL, + last_apply_time TIMESTAMP WITH TIME ZONE, + last_wal_primary_location TEXT NOT NULL, + last_wal_standby_location TEXT, + replication_lag BIGINT NOT NULL, + apply_lag BIGINT NOT NULL +) + $repmgr_func$; + END IF; +END$repmgr$; + + + +CREATE INDEX idx_monitoring_history_time + ON repmgr.monitoring_history (last_monitor_time, standby_node_id); + +CREATE VIEW repmgr.show_nodes AS + SELECT n.node_id, + n.node_name, + n.active, + n.upstream_node_id, + un.node_name AS upstream_node_name, + n.type, + n.priority, + n.conninfo + FROM repmgr.nodes n +LEFT JOIN repmgr.nodes un + ON un.node_id = n.upstream_node_id; + + +/* XXX update upgrade scripts! */ +CREATE TABLE repmgr.voting_term ( + term INT NOT NULL +); + +CREATE UNIQUE INDEX voting_term_restrict +ON repmgr.voting_term ((TRUE)); + +CREATE RULE voting_term_delete AS + ON DELETE TO repmgr.voting_term + DO INSTEAD NOTHING; + + +/* ================= */ +/* repmgrd functions */ +/* ================= */ + +/* monitoring functions */ + +CREATE FUNCTION set_local_node_id(INT) + RETURNS VOID + AS 'MODULE_PATHNAME', 'set_local_node_id' + LANGUAGE C STRICT; + +CREATE FUNCTION get_local_node_id() + RETURNS INT + AS 'MODULE_PATHNAME', 'get_local_node_id' + LANGUAGE C STRICT; + +CREATE FUNCTION standby_set_last_updated() + RETURNS TIMESTAMP WITH TIME ZONE + AS 'MODULE_PATHNAME', 'standby_set_last_updated' + LANGUAGE C STRICT; + +CREATE FUNCTION standby_get_last_updated() + RETURNS TIMESTAMP WITH TIME ZONE + AS 'MODULE_PATHNAME', 'standby_get_last_updated' + LANGUAGE C STRICT; + +/* failover functions */ + +CREATE FUNCTION notify_follow_primary(INT) + RETURNS VOID + AS 'MODULE_PATHNAME', 'notify_follow_primary' + LANGUAGE C STRICT; + +CREATE FUNCTION get_new_primary() + RETURNS INT + AS 'MODULE_PATHNAME', 'get_new_primary' + LANGUAGE C STRICT; + +CREATE FUNCTION reset_voting_status() + RETURNS VOID + AS 'MODULE_PATHNAME', 'reset_voting_status' + LANGUAGE C STRICT; + +CREATE FUNCTION am_bdr_failover_handler(INT) + RETURNS BOOL + AS 'MODULE_PATHNAME', 'am_bdr_failover_handler' + LANGUAGE C STRICT; + +CREATE FUNCTION unset_bdr_failover_handler() + RETURNS VOID + AS 'MODULE_PATHNAME', 'unset_bdr_failover_handler' + LANGUAGE C STRICT; + + +CREATE VIEW repmgr.replication_status AS + SELECT m.primary_node_id, m.standby_node_id, n.node_name AS standby_name, + n.type AS node_type, n.active, last_monitor_time, + CASE WHEN n.type='standby' THEN m.last_wal_primary_location ELSE NULL END AS last_wal_primary_location, + m.last_wal_standby_location, + CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.replication_lag) ELSE NULL END AS replication_lag, + CASE WHEN n.type='standby' THEN + CASE WHEN replication_lag > 0 THEN age(now(), m.last_apply_time) ELSE '0'::INTERVAL END + ELSE NULL + END AS replication_time_lag, + CASE WHEN n.type='standby' THEN pg_catalog.pg_size_pretty(m.apply_lag) ELSE NULL END AS apply_lag, + 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 + FROM repmgr.monitoring_history m + JOIN repmgr.nodes n ON m.standby_node_id = n.node_id + WHERE (m.standby_node_id, m.last_monitor_time) IN ( + SELECT m1.standby_node_id, MAX(m1.last_monitor_time) + FROM repmgr.monitoring_history m1 GROUP BY 1 + ); +