AWS Systems Manager State Manager vs Quattor

AWS Systems Manager State Manager automates keeping managed nodes and other AWS resources in a state that customers define. Its associations specify the configuration to maintain, when to apply it and which resources to target. Targets can be selected by tags, AWS Resource Groups, individual node IDs or all managed nodes in the current Region and account. Associations can run immediately or later and accept most standard cron and rate expressions, but association cron expressions cannot specify months. On Linux, macOS and Windows Server managed nodes, State Manager can bootstrap software, schedule agent updates, configure network settings, join nodes to a Microsoft Active Directory domain and run scripts. Association run output can be stored in Amazon S3, and State Manager is supported as an event type and target type in Amazon EventBridge rules. It has no additional charge, although limits may apply. State Manager runs as a cloud service with an agent-based model. AWS Systems Manager follows a shared responsibility model: AWS protects cloud infrastructure, while customer responsibilities depend on the service, data and requirements. Third-party auditors assess Systems Manager under assurance programs including SOC, PCI, FedRAMP and HIPAA.

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.