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There are two releases of Cedar Backup: version 2 and version 3. This project (Cedar Backup v2) uses the Python 2 interpreter, and Cedar Backup v3 uses the Python 3 interpreter. Because Python 2 is approaching its end of life, and Cedar Backup v3 has been available since July of 2015, Cedar Backup v2 is unsupported as of 11 Nov 2017. There will be no additional releases, and users who report problems will be referred to the new version. Please move to Cedar Backup v3.

Cedar Backup v2 - UNSUPPORTED

What is Cedar Backup?

Cedar Backup v2 is a software package designed to manage system backups for a pool of local and remote machines. The project was originally maintained at SourceForge, and historical releases still exist there. The project was moved to BitBucket in mid-2015, and revision control was converted from Subversion to Mercurial at the same time.

Cedar Backup understands how to back up filesystem data as well as MySQL and PostgreSQL databases and Subversion repositories. It can also be easily extended to support other kinds of data sources. The backup process is focused around weekly backups to a single CD or DVD disc, with the expectation that the disc will be changed or overwritten at the beginning of each week. Alternately, Cedar Backup can write your backups to the Amazon S3 cloud rather than relying on physical media.

Besides offering command-line utilities to manage the backup process, Cedar Backup provides a well-organized library of backup-related functionality, written in the Python 2 programming language.

There are many different backup software implementations out there in the open source world. Cedar Backup aims to fill a niche: it aims to be a good fit for people who need to back up a limited amount of important data on a regular basis. Cedar Backup isn't for you if you want to back up your huge MP3 collection every night, or if you want to back up a few hundred machines. However, if you administer a small set of machines and you want to run daily incremental backups for things like system configuration, current email, small web sites, Subversion or Mercurial repositories, or small MySQL databases, then Cedar Backup is probably worth your time.

Cedar Backup has been developed on a Debian GNU/Linux system and is primarily supported on Debian and other Linux systems. However, since it is written in portable Python 2, it should run without problems on just about any UNIX-like operating system. In particular, full Cedar Backup functionality is known to work on Debian and SuSE Linux, and client functionality is also known to work on FreeBSD and MacOS systems.

Library Code

The Cedar Backup 2 has been designed as both an application and a library of backup-related functionality. The CedarBackup2 Python package contains a variety of useful backup-related classes and functions. For instance: the IsoImage class represents an ISO CD image; the CdWriter class represents a CD-R/CD-RW writer device; and the FilesystemList class represents a list of files and directories on a filesystem. For more information, see the public interface documentation, generated from the source code using Epydoc.

Documentation

See the Changelog for recent changes.

The Cedar Backup Software Manual documents the process of setting up and using Cedar Backup. In the manual, you can find information about how Cedar Backup works, how to install and configure it, how to schedule backups, how to restore data, and how to get support.

The following versions of the manual are available:

Most users will want to look at the multiple-page HTML version.

Package Distributions

Cedar Backup is primarily distributed as a Python 2 source package. You can download the latest release from the BitBucket download page.

The official Debian packages for Cedar Backup v2 are called called cedar-backup2 and cedar-backup2-doc. The Debian buster release will be the last release that includes packages for Cedar Backup v2.

Support

As of 11 Nov 2017, Cedar Backup v2 is unsupported. Please move to Cedar Backup v3, which uses the Python 3 interpreter.

Migrating from Version 2 to Version 3

The main difference between Cedar Backup version 2 and Cedar Backup version 3 is the targeted Python interpreter. Cedar Backup version 2 was designed for Python 2, while version 3 is a conversion of the original code to Python 3. Other than that, both versions are functionally equivalent. The configuration format is unchanged, and you can mix-and-match masters and clients of different versions in the same backup pool.

A major design goal for version 3 was to facilitate easy migration testing for users, by making it possible to install version 3 on the same server where version 2 was already in use. A side effect of this design choice is that all of the executables, configuration files, and logs changed names in version 3. Where version 2 used cback, version 3 uses cback3: cback3.conf instead of cback.conf, cback3.log instead of cback.log, etc.

So, while migrating from version 2 to version 3 is relatively straightforward, you will have to make some changes manually. You will need to create a new configuration file (or soft link to the old one), modify your cron jobs to use the new executable name, etc. You can migrate one server at a time in your pool with no ill effects, or even incrementally migrate a single server by using version 2 and version 3 on different days of the week or for different parts of the backup.

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