1.5 KiB
repmgr: Replication Manager for PostgreSQL
repmgr is a suite of open-source tools to manage replication and failover
within a cluster of PostgreSQL servers. It enhances PostgreSQL's built-in
replication capabilities with utilities to set up standby servers, monitor
replication, and perform administrative tasks such as failover or switchover
operations.
repmgr 4 is a complete rewrite of the existing repmgr codebase.
Commands
Currently available:
repmgr master register
repmgr master unregister
repmgr standby clone
repmgr standby register
repmgr standby unregister
repmgr standby promote
repmgr standby follow
repmgr cluster event [--all] [--node-id] [--node-name] [--event] [--event-matching]
Backwards compatibility
repmgr is now implemented as a PostgreSQL extension.
Metadata tables have been revised and are not backwards-compatible with 3.x. (however future DDL updates will be easier as they can be carried out via the ALTER EXTENSION mechanism.
TODO: extension upgrade script for pre-4.0
Some configuration items have had their names changed for consistency
and clarity e.g. node => node_id. repmgr will issue a warning
about deprecated/altered options.
Some configuration items have been changed to command line options, and vice-versa, e.g. to avoid hard-coding things like a node's upstream ID which might change.
TODO: possibly add a config file conversion script/function.