Ansible!

Puppet Data Center Automation Solution helps you save time, gain visibility into your server environment, and ensure consistency across your IT infrastructure.

DCImanager facilitates the deployment and management of your dedicated servers and data center infrastructure, reduces setup and operational costs, decreases downtime while providing enhanced functionality to your clients and customers.

Rudder is an easy to use, web-driven, role-based solution for IT Infrastructure Automation and Compliance. With a focus on continuously checking configurations and centralising real-time status data, Rudder can show a high-level summary (“ISO 27001 rules are at 100%!”) and break down noncompliance issues to a deep technical level (“Host prod-web-03: SSH server configuration allows root logins”).

RunDeck is an open source automation service with a web console, command line tools and a WebAPI. It lets you easily run automation tasks across a set of nodes.

Foreman is an open source project that helps system administrators manage servers throughout their lifecycle, from provisioning and configuration to orchestration and monitoring. Using Puppet or Chef and Foreman's smart proxy architecture, you can easily automate repetitive tasks, quickly deploy applications, and proactively manage change, both on-premise with VMs and bare-metal or in the cloud.

cdist is an alternative to other configuration management systems like cfengine, bcfg2, chef and puppet. But cdist ticks differently.

Bcfg2 helps system administrators produce a consistent, reproducible, and verifiable description of their environment, and offers visualization and reporting tools to aid in day-to-day administrative tasks. It is the fifth generation of configuration management tools developed in the Mathematics and Computer Science Division of Argonne National Laboratory.

Ensure complianceDefine the desired state and configuration of your IT infrastructure, and CFEngine will automatically ensure that it complies.

The Apstra Operating System (AOS) is a vendor-agnostic, intent-based networking system for the data center network featuring closed-loop telemetry.. You can deploy AOS across a network infrastructure that comprises a wide variety of name-brand or open network hardware, decoupling your network service design and operations from the lower-level, error-prone, manual workflows required by vendor-specific networking hardware. It reduces time and risks in all aspects of network design and operations.