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Surprise: Microsoft Has a Second Internal-Use-Only Linux Distro

dimanche 15 mai 2022, 18:34 , par Slashdot
ZDNet reports there's more than just the one Microsoft-created Linux distribution for internal use only called CBL (Common Base Linux) Mariner.

'It turns out there's another Microsoft-developed Linux distribution that's also for internal use that's known as CBL-Delridge or CBL-D.'

I discovered the existence of CBL-D for the first time this week in a rather round-about way. I stumbled onto a February 2 blog post from Hayden Barnes. a Senior Engineering Manager at SuSE who led the Windows on Rancher engineering team, which traced his steps in discovering and building his own image of CBL-D. Barnes noted that Microsoft published CBL-Delridge in 2020, the same year that it also published CBL-Mariner. The main difference between the two: Delridge is a custom Debian derivative, while Mariner is a custom Linux From Scratch-style distribution.

CBL-D powers Azure's Cloud Shell. The Azure Cloud Shell provides a set of cloud-management tools packaged in a container. In a note on the GitHub repo for the Cloud Shell, officials noted that 'the primary difference between Debian and CBL-D is that Microsoft compiles all the packages included in the CBL-D repository internally. This helps guard against supply chain attacks....'

CBL-Mariner and CBL-Delridge are just two of the Microsoft-developed Linux-related deliverables from the Linux Systems Group. Others include the Windows Subsystem for Linux version 2 (WSL2), which is part of Windows 10; an Azure-tuned Linux kernel which is designed for optimal performance as Hyper-V guests; and Integrity Policy Enforcement (IPE), a proposed Linux Security Module (LSM) from the Enterprise and Security team.

Read more of this story at Slashdot.
https://linux.slashdot.org/story/22/05/14/1934226/surprise-microsoft-has-a-second-internal-use-only-...
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