puppetlabs/puppet
Puppet
Puppet is an infrastructure as code tool and configuration management framework used to automate the provisioning and state orchestration of server fleets. It functions as a declarative state orchestrator that manages server configurations and system settings to ensure consistency and reproducibility across a fleet of machines.
The system utilizes a declarative state modeling approach and an idempotent execution engine to maintain configuration state and prevent environment drift. It employs resource-based abstraction and a client-server architecture to translate high-level specifications into concrete system changes across multiple operating systems.
The platform covers a broad range of administrative workflows, including automated server provisioning, enterprise systems administration, and infrastructure configuration automation. It also includes capabilities for infrastructure testing, such as automated test execution, acceptance testing, and the provisioning of test hosts in virtual environments.
The system can be configured to run as a background service using native initialization scripts or unit files.
Features
- Infrastructure Configuration Managers - Defines and enforces a consistent state for servers and system settings across a large fleet of machines.
- Infrastructure State Enforcers - Implements mechanisms that continuously reconcile system configurations against a declarative desired state to prevent environment drift.
- Declarative Configuration Frameworks - Provides a framework for automating the provisioning and maintaining the state of server infrastructure using declarative specifications.
- Infrastructure Automation - Executes administrative tasks like installing packages and updating server settings based on a centralized specification.
- Infrastructure State Management - Automates the provisioning and state management of servers to ensure environments remain consistent and reproducible.
- Infrastructure as Code - Manages server configurations and system settings as version-controlled code to ensure consistency across fleets.
- Resource Abstraction Layers - Maps high-level declarative configurations to low-level system commands using resource-based abstraction.
- Server Provisioning - Automates the initial setup of new server instances by applying required software packages and configurations from a central source.
- Declarative Configuration Systems - Defines the desired final state of a system through declarative configuration files to calculate necessary changes.
- Idempotency Patterns - Implements an execution engine that ensures applying the same configuration multiple times results in the same state without side effects.
- Client Configuration State Monitoring - Continuously monitors and corrects server settings to prevent environment drift caused by manual changes.
- System Provider Abstractions - Provides a pluggable layer to translate abstract resource declarations into concrete system calls across different operating systems.
- Automated Test Execution - Runs test suites and performs static analysis to verify the functional correctness and quality of configuration code.
- System Administration Utilities - Provides utilities to manage administrative tasks and system updates at scale for reproducible environments.
- Client-Server Architecture - Uses a central master node to manage configuration state while distributing execution to agents on target machines.
- Configuration Catalogs - Translates high-level manifests into a dependency graph of resources to ensure precise execution order on target agents.
- Operational Task Automation - Automates the distribution of software packages and execution of administrative tasks across multiple operating systems.
- Acceptance Testing - Executes automated tests against infrastructure using pre-built packages or local repositories to verify system behavior.
- Automated Infrastructure Testing - Provides workflows for creating virtual environments and running automated test suites to verify infrastructure behavior.
- Virtual Environment Provisioners - Creates clean virtual environments using hypervisors or static servers to ensure consistent infrastructure testing.
- DevOps Tools - Automate administrative tasks across multiple operating systems.
