Flannel

Flannel is a soft woven fabric, of various fineness. Flannel was originally made from carded wool or worsted yarn, but is now often made from either wool, cotton, or synthetic fiber. A textile made from Scots pine fibre is called vegetable flannel. Flannel may be brushed to create extra softness or remain unbrushed. Brushing is a mechanical process wherein a fine metal brush rubs the fabric to raise fine fibres from the loosely spun yarns. Typically, flannel has either a single- or double-sided nap. Double-napped flannel refers to a fabric that has been brushed on both sides. If the flannel is not napped, it gains its softness through the loosely spun yarn in its woven form. Flannel is commonly used to make tartan clothing, blankets, bed sheets, and sleepwear.

"Flannel shirt" is often used to mean any shirt with a plaid or tartan pattern.

History

The origin of the word is uncertain, but a Welsh origin has been suggested as fabric similar to flannel can be traced back to Wales, where it was well known as early as the 16th century. The French term flanelle was used in the late 17th century, and the German Flanell was used in the early 18th century.

CoreOS

CoreOS is an open-source lightweight operating system based on the Linux kernel and designed for providing infrastructure to clustered deployments, while focusing on automation, ease of applications deployment, security, reliability and scalability. As an operating system, CoreOS provides only the minimal functionality required for deploying applications inside software containers, together with built-in mechanisms for service discovery and configuration sharing.

CoreOS shares the foundations with Chrome OS and Chromium OS, by the means of using their common software development kit (SDK) as a base while adding new functionality and customizing it to support hardware used in servers.As of January 2015, CoreOS is actively developed, primarily by Alex Polvi, Brandon Philips and Michael Marineau, with its major features available as a stable release.

Overview

CoreOS provides no package manager as a way for distributing payload applications, requiring instead all applications to run inside their containers. Serving as a single control host, a CoreOS instance uses the underlying operating-system-level virtualization features of the Linux kernel to create and configure multiple containers that perform as isolated Linux systems. That way, resource partitioning between containers is performed through multiple isolated userspace instances, instead of using a hypervisor and providing full-fledged virtual machines. This approach relies on the Linux kernel's cgroups functionality, which provides namespace isolation and abilities to limit, account and isolate resource usage (CPU, memory, disk I/O, etc.) for the collections of processes.

Flannel (disambiguation)

Flannel is a woollen (or other) cloth.

Flannel may also refer to:

Textiles

Other uses