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HowTos

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today's howtos

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HowTos
  • A New Mental Model for Computers and Networks
  • Securing the Cyrus SASL Sample Server and Client with Kerberos
  • Deploy containers with Atomic Host, Ansible, and Cockpit

    In the course of my job at Red Hat, I work with Docker containers on Fedora Atomic host every day. The Atomic Host from Project Atomic is a lightweight container OS that can run Linux containers in Docker format. It’s been modified for efficiency, making it optimal to use as a Docker run-time system for cloud environments.

    Fortunately I’ve found a great way to manage containers running on the host: Cockpit. Cockpit is a remote manager for GNU/Linux servers with a nice Web UI. It lets me manage servers and containers running on the host. You can read more about Cockpit in this overview article previously published here. However, I also wanted to automate running containers on the host, which I’ve done using Ansible.

    Note that we cannot use the dnf command on the Atomic Host. The host is designed not as a general purpose OS, but to be more fit for containers and other purposes. But it’s still very easy to set up applications and services on the Atomic Host. This post shows you how to automate and simplify this process.

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Ubuntu 16.04.2 LTS Delayed Until February 2, Will Bring Linux 4.8, Newer Mesa

If you've been waiting to upgrade your Ubuntu 16.04 LTS (Xenial Xerus) operating system to the 16.04.2 point release, which should have hit the streets a couple of days ago, you'll have to wait until February 2. We hate to give you guys bad news, but Canonical's engineers are still working hard these days to port all the goodies from the Ubuntu 16.10 (Yakkety Yak) repositories to Ubuntu 16.04 LTS, which is a long-term supported version, until 2019. These include the Linux 4.8 kernel packages and an updated graphics stack based on a newer X.Org Server version and Mesa 3D Graphics Library. Read more