Rauc

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RAUC is an open-source tool for safe and secure software updates on embedded Linux systems. It ensures robust and atomic updates, preventing system failures during the process.

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At a glance

Pricing

Open Source

Free tier

Yes

API

Yes

Skill level

Technical

About

What is rauc?

RAUC, the Robust Auto-Update Controller, provides a comprehensive solution for managing software updates on embedded Linux systems. It functions as both a target application for update clients and a host/target tool for creating, inspecting, and modifying update bundles. Key features include fail-safe and atomic updates, ensuring system integrity even if an update is interrupted. It supports cryptographic signing and verification using OpenSSL, with options for PKCS#11 tokens. RAUC offers flexible redundancy setups, including symmetric and asymmetric configurations, and allows grouping of multiple slots for update targets. It also supports HTTP(S) streaming for updates, eliminating the need for intermediate storage on the target, and offers delta-like adaptive update support for efficiency. RAUC is compatible with various bootloaders and storage types, making it a versatile choice for embedded Linux development.

Best used for

Ideal for developers and product managers who need to implement robust and secure software update mechanisms for embedded Linux devices, manage various storage configurations, and ensure system integrity during updates. Especially valuable for IoT and industrial applications requiring high reliability and fail-safe operations.

Common actions

manage software updates

secure embedded systems

ensure atomic updates

create update bundles

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Capabilities

Key features

Fail-safe atomic updates
Cryptographic signing/verification
Flexible redundancy setup
HTTP(S) streaming updates
Delta-like adaptive updates
Bootloader support
D-Bus interface

Target Audience

developerproduct managerstartup founder

Integrations

Not yet documented

Pricing & Plans

Open Source

Free

FAQs

What types of embedded Linux systems does RAUC support for updates?

RAUC is designed for a wide range of embedded Linux systems, supporting various bootloaders like GRUB, Barebox, U-Boot, and EFI. It also works with diverse storage types including read-only filesystems (SquashFS, EROFS), read-write filesystems (ext4, VFAT), eMMC boot partitions, and raw NAND/NOR flash.

How does RAUC ensure the safety and security of software updates?

RAUC ensures safety through fail-safe and atomic updates, meaning an interruption won't brick the system. Security is maintained via cryptographic signing and verification of update bundles using OpenSSL and x.509 certificates, with support for PKCS#11 tokens for key management.

Can RAUC handle updates for devices with limited storage?

Yes, RAUC offers features like HTTP(S) streaming mode, which allows bundles to be installed directly from a web server without requiring intermediate storage on the target device. It also supports delta-like adaptive updates to minimize data transfer and storage needs.

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