Top three requirements for OTA software updates for IoT

Updating your device software, whether its system or application level, may seem an easy task to do when you first start your IoT project but then you realize what’s involved is more than just overwriting some files with new copies. What if the power goes out while the device is updating? What if the connectivity is lost due to poor network quality? What if a third party sends a fake update? What...

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How to update a .deb package with Mender using Raspberry Pi

3rd Dec 2019

Embedded Linux devices are very fragmented in their design and implementation. At the basic level, they all have the following components:

Applications implement the primary functions of a device; they are ultimately what makes the end user benefit from using the device. Therefore, they are the most frequently updated software stack to fix bugs and to add new features. They could also be updat...

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From mgo to mongo-driver: Migration to the MongoDB supported driver for Go

28th Nov 2019

Mender project provides proof that golang and microservices architecture make a good pair. Together with MongoDB, web UI, and a bit of orchestration they are building blocks of a modern highly scalable and customizable over-the-air (OTA) software update solution. In this post I describe the challenges we faced in the implementation of one of the core elements we changed, one way of migrating to a...

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Managing large scale deployments with phased rollout and schedule deployments

As the number of connected devices increase, the operations and infrastructure needed to support continuous updates at scale is growing fast. Deploying to a large fleet of connected devices in the field with thousands or tens of thousands, can pose a significant risk of something going wrong.

Regardless of how well tested the software and update process is, you will only know how well the deploy...

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How to do delta (differential) updates with Mender

Using binary deltas for applying updates is a more efficient mechanism for updating software over-the-air (OTA) which enables faster downloads and bandwidth cost saving for metered networks. When using cellular (e.g. 4G/LTE) or other bandwidth constrained networks, the impact is even greater. With the recently announced commercial editions, Mender offers the ability to generate and only deploy t...

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