Canonical takes its unchanging approach even further with Ubuntu Core 26 LTS. This minimalist system is resolutely targeting the Internet of Things and embedded systems. The promise is clear: reliability, security, and long-term maintenance until 2041.
The main innovations concern updates and enhanced data protection. By reinforcing its core principles, Ubuntu Core 26 paves the way for more reliable operation in critical environments where any mistake can be costly.
Ubuntu Core 26: an unchanging OS optimized for IoT and Edge computing
Ubuntu Core is not an operating system like any other. Here, nothing is left to chance. Every component, from the kernel to the applications, is packaged in snapsEverything is locked to prevent any accidental changes.
This unwavering robustness guarantees increased resistance to attacks and software corruption. The system is primarily deployed in embedded devices, where it replaces traditional distributions with a stable and secure foundation.
A response tailored to the constraints of embedded environments
IoT devices often have limited bandwidth and strict system constraints. Ubuntu Core 26 addresses this reality with lightweight updates, avoiding unpleasant interruptions and reducing network consumption.
It’s a real breath of fresh air! The slightest overload can slow down an entire fleet of equipment deployed in the field. The unchanging system thus provides the robustness required for these demanding applications.
Optimized updates: the snap-delta format revolution
Canonical introduces with this version a mechanism called snap-deltaThis format allows for a massive reduction in the size of OTA (over-the-air) updates.
Up to 90% bandwidth savings for most snaps! This avoids redownloading entire packets when only a portion has changed. To be clear, an update that went from 16 MB to 1.5 MB.
In large-scale IoT deployments, this saving translates into time savings and a substantial reduction in operating costs. It’s like saving fuel by running a tractor: it may seem insignificant, but over time, it really adds up.
Livepatch for ARM64, hot patching without downtime
Another striking innovation is Livepatch. Initially available for AMD64 since Ubuntu Core 20, it now also supports ARM64.
This critical mechanism allows for real-time Linux kernel correction without restarting the device. For ARM devices used in connected objects, this enhances security without sacrificing availability.
Enhanced immutability and regulatory requirements
It’s not just about preventing accidental changes. Ubuntu Core 26 orchestrates several layers of hardware security. Integration with OP-TEE via ARM TrustZone allows for the reliable isolation of cryptographic keys.
The sealed keys are stored directly in the LUKS2 header by TPM. These mechanisms ensure that the system meets the strict criteria of the European Cyber Resilience Act.
Respecting the legislation while ensuring safety
In our line of work, it’s like following a mountain trail: you have to know where to place your foot to avoid falling. Ubuntu Core 26 rigorously follows these rules to ensure the long-term viability of systems deployed in production.
Compliance has become a key factor. It ensures that the integrity and resilience of equipment are not just wishful thinking, but a measurable and verifiable reality.
Exceptional long-term support: 15 years of maintenance
This type of minimalist and unchanging OS is not a lab curiosity. Ubuntu Core 26 is committed to the long term, with 15 years of updates and patches.
For IoT and Edge, this is a record. By building on this foundation, we avoid rushed migrations and obsolescence surprises that often plague industrial projects.
A stability that reflects the real needs of the industry
Imagine a tractor hood that’s never removed, running flawlessly for fifteen years. This metaphor perfectly illustrates the value of a Linux distribution that remains unchanged and is supported over time.
This curbs hidden costs and provides the systems engineer with a reliable foundation. Maintenance is performed in a controlled environment, where each component has been thoroughly checked.