repmgr 4.4 Documentation
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repmgr 4.4 Documentation

2ndQuadrant Ltd

Abstract

This is the official documentation of repmgr 4.4 for use with PostgreSQL 9.3 - PostgreSQL 11.

repmgr is being continually developed and we strongly recommend using the latest version. Please check the repmgr website for details about the current repmgr version as well as the current repmgr documentation.

repmgr is developed by 2ndQuadrant along with contributions from other individuals and organisations. Contributions from the community are appreciated and welcome - get in touch via github or the mailing list/forum. Multiple 2ndQuadrant customers contribute funding to make repmgr development possible.

repmgr is fully supported by 2ndQuadrant's 24/7 Production Support. 2ndQuadrant, a Major Sponsor of the PostgreSQL project, continues to develop and maintain repmgr. Other organisations as well as individual developers are welcome to participate in the efforts.

Table of Contents

I. Getting started

1. repmgr overview
2. Installation
3. Quick-start guide

II. repmgr administration manual

4. repmgr configuration
5. Cloning standbys
6. Promoting a standby server with repmgr
7. Following a new primary
8. Performing a switchover with repmgr
9. Event Notifications
10. Upgrading repmgr

III. Using repmgrd

11. repmgrd overview
12. Automatic failover with repmgrd
13. repmgrd setup and configuration
14. repmgrd operation
15. BDR failover with repmgrd

IV. repmgr command reference

repmgr primary register — initialise a repmgr installation and register the primary node
repmgr primary unregister — unregister an inactive primary node
repmgr standby clone — clone a PostgreSQL standby node from another PostgreSQL node
repmgr standby register — add a standby's information to the repmgr metadata
repmgr standby unregister — remove a standby's information from the repmgr metadata
repmgr standby promote — promote a standby to a primary
repmgr standby follow — attach a running standby to a new upstream node
repmgr standby switchover — promote a standby to primary and demote the existing primary to a standby
repmgr witness register — add a witness node's information to the repmgr metadata
repmgr witness unregister — remove a witness node's information to the repmgr metadata
repmgr node status — show overview of a node's basic information and replication status
repmgr node check — performs some health checks on a node from a replication perspective
repmgr node rejoin — rejoin a dormant (stopped) node to the replication cluster
repmgr node service — show or execute the system service command to stop/start/restart/reload/promote a node
repmgr cluster show — display information about each registered node in the replication cluster
repmgr cluster matrix — runs repmgr cluster show on each node and summarizes output
repmgr cluster crosscheck — cross-checks connections between each combination of nodes
repmgr cluster event — output a formatted list of cluster events
repmgr cluster cleanup — purge monitoring history
repmgr daemon status — display information about the status of repmgrd on each node in the cluster
repmgr daemon start — Start the repmgrd daemon
repmgr daemon stop — Stop the repmgrd daemon
repmgr daemon pause — Instruct all repmgrd instances in the replication cluster to pause failover operations
repmgr daemon unpause — Instruct all repmgrd instances in the replication cluster to resume failover operations

A. Release notes

A.1. Release 4.4
A.2. Release 4.3
A.3. Release 4.2
A.4. Release 4.1.1
A.5. Release 4.1.0
A.6. Release 4.0.6
A.7. Release 4.0.5
A.8. Release 4.0.4
A.9. Release 4.0.3
A.10. Release 4.0.2
A.11. Release 4.0.1
A.12. Release 4.0.0

B. Verifying digital signatures

B.1. repmgr source code signing key

C. FAQ (Frequently Asked Questions)

C.1. General
C.2. repmgr
C.3. repmgrd

D. repmgr package details

D.1. CentOS Packages
D.2. Debian/Ubuntu Packages
D.3. Snapshot packages
D.4. Installing old package versions
D.5. Information for packagers

E. repmgr support

E.1. Reporting Issues

Index

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