Binary Replication Tools
From PostgreSQL wiki
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= Purpose = | = Purpose = | ||
| - | Compare binary replication tools for PostgreSQL for features and ease of use. | + | Compare binary replication tools for PostgreSQL for features and ease of use. |
| + | |||
| + | The features these tools help automated include: | ||
| + | |||
| + | * Managing binary backups (create, track, restore) | ||
| + | * Managing creation of replicas | ||
| + | ** Streaming replication | ||
| + | ** Cascaded replication | ||
| + | ** WAL-shipping replication | ||
| + | * Monitoring of replication delay | ||
| + | * Automated failover | ||
| + | * Automated "following" of a new master by secondary replicas | ||
| + | |||
| + | My goal is to classify and differentiate the various tools for easier selection and fit to purpose. | ||
= OmniPITR = | = OmniPITR = | ||
Revision as of 01:05, 29 December 2012
Contents |
Purpose
Compare binary replication tools for PostgreSQL for features and ease of use.
The features these tools help automated include:
- Managing binary backups (create, track, restore)
- Managing creation of replicas
- Streaming replication
- Cascaded replication
- WAL-shipping replication
- Monitoring of replication delay
- Automated failover
- Automated "following" of a new master by secondary replicas
My goal is to classify and differentiate the various tools for easier selection and fit to purpose.
OmniPITR
OmniPITR Demo of a simple replication setup with OmniPITR
Summary of Features:
- Creating PITR backups
- Restoring a PITR backup for DR
- Creating replicas (by untarring backups)
- Monitoring of replicas
- Supports 'pause removal' of WAL during a backup (nice!)
- BSD license
Install notes:
- No packaging, perl
- No documented support for streaming replication
- Uses an odd format for omnipitr logfile naming
- No configuration file option (instead of using long command-line options)
repmgr
repmgr Demo of a simple setup with repmgr
Supported features:
- Setting up new replicas/hot_standby with streaming replication (makes recovery.conf itself)
- Making base backups
- Failover (automated, or not, including redirecting replicas to connect to a new master after failover)
- Lag monitoring (repmgrd)
- A "witness" DB server for monitoring (typically on a replica)
- License: GPLv3
Install notes:
- Written in C
- Installs like a typical UNIX utility out of postgresql/contrib source tree (make USE_PGXS=1; make USE_PGXS=1 install)
- Developed on Debian systems, so support for package is present. Did not find an Ubuntu package for repmgr, however.
- Detailed docs are in the README for installing on many Linux platforms
- Doesn't appear to be supported on Mac OS X
