Intel's Clear Containers creep toward being useful: Now plays nicer with Docker, Kubernetes

Like virtual machines but, well, like virtual machines

Containers photo via Shutterstock

Intel has tweaked its Clear Containers software so that it is compatible with Docker Swarm and Kubernetes orchestration.

Virtual machines, governed by a hypervisor, enforce data isolation in hardware; containers, while less secure, can be launched and deployed faster and offer flexibility in terms of portability across machines, shared repositories, and maintenance.

Clear Containers, now at version 2.1.1, represents Intel's attempt to have the best of both worlds, to combine the security advantages of virtual machines with the deployment advantages of containers.

The software is compatible withthe Open Container Initiative (OCI) and so can integrate with Docker 1.12 (and its Swarm toolkit) via the OCI runtime method.

It relies on a kernel-based virtual machine (KVM) QEMU hypervisor, in conjunction with systemd and kernel optimizations, to minimize memory consumption while maximizing performance, at least in theory.

A version bump last month to 2.1.0 added a slew of other improvements. These include:

  • Improved host-guest communication.
  • Support for Docker exec and Docker run.
  • Additional workload isolation via namespaces.
  • Better TTY handling.
  • Support for Kubernetes pod semantics, to start Clear Containers via the Container Runtime Interface.

There's still further work to do, however. As Intel's Damien Lespiau points out in one of many GitHub issues posts, installation on Redhat Enterprise Linux requires 71 commands.

DevOps is not for the faint of heart. ?


Biting the hand that feeds IT ? 1998–2017

  • 8207870 2018-01-20
  • 59213869 2018-01-20
  • 814434868 2018-01-20
  • 663393867 2018-01-20
  • 255500866 2018-01-20
  • 736756865 2018-01-20
  • 57893864 2018-01-20
  • 378982863 2018-01-20
  • 463182862 2018-01-20
  • 983878861 2018-01-20
  • 226305860 2018-01-20
  • 194376859 2018-01-20
  • 17410858 2018-01-20
  • 148249857 2018-01-20
  • 619862856 2018-01-20
  • 715860855 2018-01-20
  • 99290854 2018-01-20
  • 508353853 2018-01-19
  • 966152852 2018-01-19
  • 997753851 2018-01-19