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77 lines
2.1 KiB
PL/PgSQL
77 lines
2.1 KiB
PL/PgSQL
/*
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* Update a repmgr 2.x installation to repmgr 3.0
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* ----------------------------------------------
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*
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* 1. Stop any running repmgrd instances
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* 2. On the master node, execute the SQL statements listed below,
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* taking care to identify the master node and any inactive
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* nodes
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* 3. Restart repmgrd (being sure to use repmgr 3.0)
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*/
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/*
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* Set the search path to the name of the schema used by
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* your repmgr installation
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* (this should be "repmgr_" + the cluster name defined in
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* 'repmgr.conf')
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*/
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-- SET search_path TO 'name_of_repmgr_schema';
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BEGIN;
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ALTER TABLE repl_nodes RENAME TO repl_nodes2_0;
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CREATE TABLE repl_nodes (
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id INTEGER PRIMARY KEY,
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type TEXT NOT NULL CHECK (type IN('master','standby','witness')),
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upstream_node_id INTEGER NULL REFERENCES repl_nodes (id),
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cluster TEXT NOT NULL,
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name TEXT NOT NULL,
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conninfo TEXT NOT NULL,
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slot_name TEXT NULL,
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priority INTEGER NOT NULL,
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active BOOLEAN NOT NULL DEFAULT TRUE
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);
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INSERT INTO repl_nodes
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(id, type, cluster, name, conninfo, priority)
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SELECT id,
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CASE
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WHEN witness IS TRUE THEN 'witness'
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ELSE 'standby'
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END AS type,
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cluster,
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name,
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conninfo,
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priority + 100
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FROM repl_nodes2_0;
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/*
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* You'll need to set the master explicitly; the following query
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* should identify the master node ID but will only work if all
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* standby servers are connected:
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*
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* SELECT id FROM repmgr_test.repl_nodes WHERE name NOT IN (SELECT application_name FROM pg_stat_replication)
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*
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* If in doubt, execute 'repmgr cluster show' will definitively identify
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* the master.
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*/
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UPDATE repl_nodes SET type = 'master' WHERE id = $master_id;
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/* If any nodes are known to be inactive, update them here */
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-- UPDATE repl_nodes SET active = FALSE WHERE id IN (...);
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/* When you're sure of your changes, commit them */
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-- COMMIT;
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/*
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* execute the following command when you are sure you no longer
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* require the old table:
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*/
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-- DROP TABLE repl_nodes2_0;
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