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Quattor

quattor.org

Free plan LinuxSelf-hosted
Visit quattor.org
Spec score 7.8 #13 of 26 in Configuration Management Tools

What it is

Quattor is free, open-source Linux software for automating installation, configuration, and lifecycle management across clusters, farms, grids, and clouds. Its self-hosted architecture uses a configuration-management database server, an Automated Installation Infrastructure server, and managed clients; the two servers may share one machine. AII plugins handle DHCP and PXE setup and create Kickstart files for Enterprise Linux-derived systems. Client components retrieve and validate profiles, then run configuration components. Quattor validates system descriptions before deployment, and its Pan compiler converts declarative configuration into nested structures including XML and JSON. Modular interfaces allow replacement implementations and site-specific tools, with components for core and grid services. The site describes deployments ranging from tens of systems to more than 30,000. It supports Enterprise Linux, including Rocky Linux and AlmaLinux, and is licensed under Apache 2.0 and the EU DataGrid Software License. Community users provide development and support.

Spec sheet

Purpose
Quattor is a system administration toolkit for automated installation, configuration, and management of clusters, farms, grids, and clouds.Read 8 Oct 2026 · quattor.org
Intended users
The getting-started guide describes Quattor as a somewhat complex toolkit and says production use requires detailed knowledge of the tools and site configuration.Read 8 Oct 2026 · quattor.org
Integrations
The overview describes configuration components for core and grid computing services, with examples including general-purpose metaconfig and filecopy components.Read 8 Oct 2026 · quattor.org
Security
The 26.2.0 release announcement says its RPM packages and repository metadata are signed with a GPG key.Read 8 Oct 2026 · quattor.org
Support
Quattor is developed and supported by its user community, with discussion through a mailing group and issue or pull request reporting on GitHub.Read 8 Oct 2026 · quattor.org
License
Quattor is open-source software provided under the Apache 2.0 license and the EU DataGrid Software License.Read 7 Oct 2026 · quattor.org
Architecture
Quattor comprises a configuration management database server, an automated installation infrastructure server, and managed clients; the first two can run on one system.Read 8 Oct 2026 · quattor.org
Client configuration
Client tools fetch and validate profiles, cache them locally, and invoke configuration components to apply them.Read 8 Oct 2026 · quattor.org
Configuration compiler
The Pan compiler compiles the declarative Pan language into nested tree structures, including XML and JSON output formats.Read 8 Oct 2026 · quattor.org
Customization
Well-defined interfaces let users substitute alternative implementations and integrate site-specific tools.Read 7 Oct 2026 · quattor.org
Downloads
The downloads page provides client and server RPMs through yum.quattor.org and describes nightly builds for several platforms.Read 7 Oct 2026 · quattor.org
Installation
The AII server uses plugins to manage DHCP and PXE boot configuration and to create Kickstart files for EL-derived systems.Read 7 Oct 2026 · quattor.org
Installation features
Automated Installation Infrastructure plugins manage DHCP configuration, PXE boot and Kickstart installation files for Enterprise Linux derived systems.Read 8 Oct 2026 · quattor.org
Lifecycle management
Its tools cover system management from initial installation through configuration to service upgrades.Read 8 Oct 2026 · quattor.org
Modular design
Well-defined interfaces allow alternative implementations and integration with site-specific tools.Read 8 Oct 2026 · quattor.org
Notable limit
The documentation says the older SCDB configuration database is deprecated, has scaling problems above 2,500 systems, and will receive no further development.Read 8 Oct 2026 · quattor.org
Notable limitation
The downloads page cautions that nightly builds may pass unit tests but are not guaranteed to work in a real environment.Read 7 Oct 2026 · quattor.org
Scale
The site says Quattor has been used in academic and commercial environments managing infrastructures from tens of systems to over 30,000.Read 8 Oct 2026 · quattor.org
Security guidance
The SCDB guide recommends restricting access to profile and Kickstart configuration areas because they may contain sensitive information, including passwords.Read 7 Oct 2026 · quattor.org
Validation
Quattor includes validation features intended to catch configuration errors before deployment.Read 8 Oct 2026 · quattor.org

Plans and prices

Quattor open-source software Free Open-source software · Apache 2.0 and EU DataGrid Software licenses Read 8 Oct 2026 · quattor.org

Every Quattor plan and price →

Strong points and limits

Strong points

  • Automates installation through service upgrades
  • Validates configurations before deployment
  • Supports Enterprise Linux, Rocky Linux, and AlmaLinux
  • Modular interfaces permit site-specific implementations
  • Free open-source software with self-hosted deployment

Limits

  • Documentation describes the toolset as somewhat complex
  • Nightly builds are not guaranteed for real environments
  • Older SCDB is deprecated above 2,500 systems
  • Sensitive profile data requires restricted access

Who it suits

It is aimed at Linux administrators managing automated, policy-driven infrastructure across many systems. The documentation describes it as complete but complex, requiring toolkit and site-configuration knowledge for production use.

Verdict

Quattor provides broad lifecycle automation and validation for Linux estates, with modular architecture and large-scale usage described by its site. Plan for operational expertise and note the deprecated SCDB limitation when choosing components.

Where Specifiction places it

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