The whole system is built to be used as immutable infrastructure, so it can be built and tested in your CI pipeline, deployed, and new versions are redeployed when you wish to upgrade. The configuration is designed for the container use case. System services are sandboxed in containers, with only the privileges they need. All system services are containers, which means that everything can be removed or replaced. Because LinuxKit is container-native, it has a very minimal size – 35MB with a very minimal boot time. The leanness directly helps with security by removing parts not needed if the OS is designed around the single use case of running containers. When using a container-specific OS, attack surfaces are typically much smaller than they would be with a general-purpose OS, so there are fewer opportunities to attack and compromise a container-specific OS.” Security is a top-level objective and aligns with NIST stating, in their draft Application Container Security Guide: “Use container-specific OSes instead of general-purpose ones to reduce attack surfaces.
#Docker for mac linux kernel portable
To achieve our goals of a secure, lean and portable OS,we built it from containers, for containers. Today, onstage at Dockercon 2017 we opensourced LinuxKit at. It is a kit, very much in the Docker philosophy of batteries included but swappable. All components can be substituted with ones that match specific needs.
All system services are containers that can be replaced, and everything that is not required can be removed. LinuxKit includes the tooling to allow building custom Linux subsystems that only include exactly the components the runtime platform requires. These companies include HPE, Intel, ARM, IBM and Microsoft – all of whom are interested in bringing Linux container functionality to new and varied platforms, from IoT to mainframes. As it turned out, this is what many other people working with containers wanted as well secure, lean and portable Linux subsystem for the container movement, So, we partnered with several companies and the Linux Foundation to build this component. What we needed to bundle was a secure, lean and portable Linux subsystem that can provide Linux container functionality as a component of a container platform. So it made sense for us to bundle Linux into the Docker platform to run in these places.
#Docker for mac linux kernel mac os
Mac OS and Windows are two obvious examples, but cloud platforms do not ship with a standard Linux either. One of the issues we encountered was that for many of these platforms, the users wanted Linuxcontainer support but the platform itself did not ship with Linux included.
The customizations we applied to make Docker native for each platform have furthered the adoption of the Docker editions. Most recently, we announced the beta of Docker for GCP. We started working on support for these platforms, and we initially shipped Docker for Mac and Docker for Windows, followed by Docker for AWS and Docker for Azure. These platforms were many and varied: from cloud platforms such as AWS, Azure, Google Cloud, to server platforms such as Windows Server, desktop platforms that their developers used such as OSX and Windows 10, to mainframes and IoT platforms – the list went on.
Last year, one of the most common requests we heard from our users was to bring a Docker-native experience to their platforms.
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