![]() ![]() Barman is an acronym for "Backup and Recovery Manager".Ĭurrently, Barman works only on Linux and Unix operating systems. In 2011, with these goals in mind, 2ndQuadrant started the development of Barman, now one of the most used backup tools for PostgreSQL. Unless you know how long it approximately takes to recover, every second will seems like forever.You will regret not being sure that the last available backup is valid.It is going to be when you are on holiday (right in the middle of your cruise around the world) and somebody else has to deal with it.It is going to be a Friday evening, most likely right when you are about to leave the office.Moreover, do everything you can to prepare yourself and your team for when the disaster happens (yes, when), because when it happens: relies on continuous monitoring of PostgreSQL and Barman, and that is able to promptly identify any anomalies.solicits to regularly scheduled drills and disaster recovery simulations with the team every 3-6 months.fosters regular practice of recovery procedures, by all members of your devops team (yes, developers too, not just system administrators and DBAs).promotes testing your backups (only a backup that is tested can be considered to be valid), either manually or automatically (be creative with Barman's hook scripts!).relies on education and training on strong theoretical and practical concepts of PostgreSQL's crash recovery, backup, Point-In-Time-Recovery, and replication for your team members.focuses even more on recovery procedures.Our mission with Barman is to promote a culture of disaster recovery that: In any case, it is important for us to emphasise more on cultural aspects related to disaster recovery, rather than the actual tools. Therefore, by integrating Barman and repmgr, you can dramatically reduce RTO to nearly zero.īased on our experience at EnterpriseDB, we can confirm that PostgreSQL open source clusters with Barman and repmgr can easily achieve more than 99.99% uptime over a year, if properly configured and monitored. RTO is more the focus of a High Availability solution, like repmgr. In reality, a careful cost analysis phase allows you to determine your business continuity requirements.įortunately, with an open source stack composed of Barman and PostgreSQL, you can achieve RPO=0 thanks to synchronous streaming replication. Understandably, we all want RPO=0 ( "zero data loss") and RTO=0 ( zero down-time, utopia) - even if it is our grandmothers's recipe website. In a few words, RPO represents the maximum amount of data you can afford to lose, while RTO represents the maximum down-time you can afford for your service. Recovery Time Objective (RTO): "the targeted duration of time and a service level within which a business process must be restored after a disaster (or disruption) in order to avoid unacceptable consequences associated with a break in business continuity".Recovery Point Objective (RPO): "maximum targeted period in which data might be lost from an IT service due to a major incident".Within business continuity, it is important to familiarise with two fundamental metrics, as defined by Wikipedia: We normally refer to this discipline as disaster recovery, and more broadly business continuity. In such cases, any ICT manager or DBA should be able to fix the incident and recover the database in the shortest time possible. system failure (including hardware failure).In a database scenario, the unexpected could take any of the following forms: However, it is important, especially in business environments, to be prepared for when the "unexpected" happens. In a perfect world, there would be no need for a backup. ![]() See section "Before you start" below for details. IMPORTANT: This manual assumes that you are familiar with theoretical disaster recovery concepts, and that you have a grasp of PostgreSQL fundamentals in terms of physical backup and disaster recovery. ![]() ![]() It allows your organisation to perform remote backups of multiple servers in business critical environments to reduce risk and help DBAs during the recovery phase.īarman is distributed under GNU GPL 3 and maintained by EnterpriseDB, a platinum sponsor of the PostgreSQL project. Barman client utilities for the Cloud ( barman-cli-cloud)īarman (Backup and Recovery Manager) is an open-source administration tool for disaster recovery of PostgreSQL servers written in Python.Integration with cluster management systems.Verification of WAL archiving configuration.Upgrading from Barman 2.X (prior to 2.8).Installation on Debian/Ubuntu using packages.Installation on RedHat/CentOS using RPM packages. ![]()
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