A pod-native container engine for Linux designed to be secure, composable, and standards-based.
rkt is a container engine for Linux that uses pods as its fundamental execution unit. It provides a secure, composable alternative to Docker with native integration for orchestration tools like Kubernetes and adherence to open container standards. The project emphasizes security-by-default features including SELinux support and hardware-isolated VMs.
Linux system administrators and DevOps engineers who need a secure, standards-compliant container runtime for production environments, particularly those using Kubernetes or systemd.
Developers choose rkt for its strong security defaults, pod-native architecture that aligns with Kubernetes concepts, and compatibility with multiple container formats including Docker and OCI images.
[Project ended] rkt is a pod-native container engine for Linux. It is composable, secure, and built on standards.
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Uses pods as the basic unit of execution, aligning seamlessly with Kubernetes concepts for better resource grouping and orchestration integration.
Includes built-in support for SELinux, TPM measurement, and hardware-isolated VMs via KVM, providing enhanced security without extra configuration.
Implements the appc specification, supports Container Networking Interface (CNI), and runs both Docker and OCI images, ensuring interoperability with open standards.
Integrates natively with init systems like systemd and orchestration tools like Kubernetes and Nomad, offering flexibility in deployment workflows.
The project is archived with all maintenance activities stopped, meaning no bug fixes, security patches, or new features will be released.
Compared to Docker, rkt has a smaller community and fewer third-party integrations, making it harder to find plugins, tools, and support resources.
Emphasis on security and standards may require more manual setup and expertise, such as configuring SELinux or networking, compared to user-friendly alternatives.
App Container basics is an open-source alternative to the following products: