NEWS & VIEWS FROM THE SUSTAINABLE SOUTHWEST Growing a Regional Food System THE SEEDS OF RURAL RESILIENCE October 2017 NORTHERN NEW MEXICO’S LARGEST DISTRIBUTION NEWSPAPER Vol. 9 No. 10 2 Green Fire Times • October 2017 www.GreenFireTimes.com Is Your Roof Winter Ready? Whether your roof is currently leaking or you’d like to restore your roof before it fails, Fix My Roof is the right choice. Call today for a free roof assessment! www.GreenFireTimes.com Green Fire Times • October 2017 3 YOU’LL LOVE WHAT YOU SEE! PROGRAM PARTNERS: FRIDAY SATURDAY OCT 27 NOV 14 7:30 PM 7:30 PM Sponsored by The L.A. Grow the Growers Browns Dance Farm Training 5 Project Business Incubation A CULTIVATING BERNALILLO COUNTY INITIATIVE bernalillo Applications for the 2018 Opencounty Space internships now available Lensic.org 505-988-1234 For more information NONPROFIT • COMMUNITY FUNDED SERVICE CHARGES APPLY AT ALL POINTS OF PURCHASE A special thanks to our www.bernco.gov/growthegrowers 2017/2018 sponsor: Find Your Future in ENGINEERING @Northern New Mexico College NORTHERN The most affordable 4-year now offering college in the Southwest classes at Santa Fe HEC! Northern Engineering programs include: n ABET-accredited Bachelor in INFORMATION ENGINEERING Tech (IET) n Ask about our new CYBERSECURITY concentration in IET Schedule your campus visit today! n Bachelor in ELECTROMECHANICAL Engineering/Solar Energy Concentration CALL 505.747.2111 or visit nnmc.edu n Associate of Applied Science degrees in RENEWABLE ENERGY and ELECTRICAL TECH 4 Green Fire Times Oc tober 2017 www.GreenFireTimes.com Vol. 9, No. 10 October 2017 Issue No.
Snap Vs Flatpak Vs Appimage: Know the Differences | Which Is Better
Published on Tux Machines (http://www.tuxmachines.org) Home > content > Snap vs Flatpak vs AppImage: Know The Differences | Which is Better Snap vs Flatpak vs AppImage: Know The Differences | Which is Better By Rianne Schestowitz Created 08/12/2020 - 8:29pm Submitted by Rianne Schestowitz on Tuesday 8th of December 2020 08:29:48 PM Filed under Software [1] Every Linux distribution has its own package manager tool or command-line based repository system to update, install, remove, and manage packages on the system. Despite having a native package manager, sometimes you may need to use a third-party package manager on your Linux system to get the latest version of a package to avoid repository errors and server errors. In the entire post, we have seen the comparison between Snap, AppImage, and Flatpak. Snap, Flatpak, and AppImage; all have their pros and cons. In my opinion, I will always prefer the Flatpak package manager in the first place. If I can?t find any packages on Flatpak, then I?ll go for the AppImage. And finally, Snap is an excellent store of applications, but it still requires some development. I would go to the Snap store for proprietary or semi-proprietary applications than main applications. Please share it with your friends and the Linux community if you find this post useful and informative. Let us know which package manager do you prefer to use on your Linux system. You can write also write down your opinions regarding this post in the comment section. [2] Software Source URL: http://www.tuxmachines.org/node/145224 Links: [1] http://www.tuxmachines.org/taxonomy/term/38 [2] https://www.ubuntupit.com/snap-vs-flatpak-vs-appimage-know-the-difference/.
Ubuntu Server Guide Basic Installation Preparing to Install
Ubuntu Server Guide Welcome to the Ubuntu Server Guide! This site includes information on using Ubuntu Server for the latest LTS release, Ubuntu 20.04 LTS (Focal Fossa). For an offline version as well as versions for previous releases see below. Improving the Documentation If you find any errors or have suggestions for improvements to pages, please use the link at thebottomof each topic titled: “Help improve this document in the forum.” This link will take you to the Server Discourse forum for the specific page you are viewing. There you can share your comments or let us know aboutbugs with any page. PDFs and Previous Releases Below are links to the previous Ubuntu Server release server guides as well as an offline copy of the current version of this site: Ubuntu 20.04 LTS (Focal Fossa): PDF Ubuntu 18.04 LTS (Bionic Beaver): Web and PDF Ubuntu 16.04 LTS (Xenial Xerus): Web and PDF Support There are a couple of different ways that the Ubuntu Server edition is supported: commercial support and community support. The main commercial support (and development funding) is available from Canonical, Ltd. They supply reasonably- priced support contracts on a per desktop or per-server basis. For more information see the Ubuntu Advantage page. Community support is also provided by dedicated individuals and companies that wish to make Ubuntu the best distribution possible. Support is provided through multiple mailing lists, IRC channels, forums, blogs, wikis, etc. The large amount of information available can be overwhelming, but a good search engine query can usually provide an answer to your questions.
CanSnap Package Tech Talks - Session 11 November 2018 edgexfoundry.org | @edgexfoundry Agenda ● Introduction to snaps ● Overview of the edgexfoundry snap ● How to install ● How to configure/manage/update ● How to use with additional device services ● Further references ● Upcoming tech talks ● Q&A edgexfoundry.org | @edgexfoundry Ian Johnson <ian.johnson@canonical.com> ● Canonical / Software Engineer Field Engineering - Devices & IoT ● Primary snap developer for Dehli release ● Contributed CI work for snap build ● Contributed code to security to decouple Docker-isms ● Involved in testing most services for Dehli ● Contributed bug fixes to SMA ● Member of the DevOps working group edgexfoundry.org | @edgexfoundry Tony Espy <espy@canonical.com> ● Canonical / Technical Architect Field Engineering - Devices & IoT ● Technical Steering Committee member ● Former Device Services WG chair ● Author of Device Services SDK Requirements ● Original developer of device-sdk-go ● Active member of Core, Device Services & Security working groups ● Created first EdgeX snap prototype edgexfoundry.org | @edgexfoundry Introduction What's a snap? Snaps are containerised software packages that work on all major Linux distributions without modification. Simple to create and publish, they automatically update safely. edgexfoundry.org | @edgexfoundry Introduction Snaps are... ● Self-contained squashfs-based software packages ● Containing one or more applications or services ● Cryptographically-signed by publisher and tamper-proof ● Published to risk-based update channels
Install a Microk8s Single Node Cluster Locally on Windows 10
Install a MicroK8s single node cluster locally on Windows 10 By Philippe Beraud, Microsoft France This walkthrough guides you through all the steps required to create and configure a MicroK8s cluster on Windows 10. Kubernetes1 runs on Linux. As such, MicroK8s2 provides a single command installation of the latest Kubernetes release on a Linux machine for development and testing. MicroK8s is easy to install and use on Ubuntu or any other Linux distro which supports snaps, i.e. pre-packaged applications (similar to Docker containers). Although Windows 10 now has some very useful features, such as the ability to install Ubuntu as an app, the integration of Windows Subsystem for Linux 2 (WSL2) doesn’t provide (yet) all the Ubuntu functionalities required to make MicroK8s run smoothly right out-of-the-box (OOB) and thus use the snap daemon. If you wish to experiment with running MicroK8s semi-natively, see: • Discourse post Using snapd in WSL2 • Post Running Snaps on WSL2 (Insiders only for now) along with the short YouTube video Use this ONE trick to run Linux Snap packages in Windows Subsystem for Linux 2 (WSL2) For now, and for the sake of simplicity for anyone looking to try out Kubernetes on Windows 10, let’s run MicroK8s on Windows 10 with virtualization. MicroK8s will install without problems on Ubuntu on a virtual machine (VM). The Canonical way to get a Linux VM on Windows 10 and to run MicroK8s in it is with multipass. Multipass gives you an easy to use interface to manage VMs on Windows 10 – Same is true on MacOS and Linux -.
Snappy Ubuntu Core Enabling Secure Devices with App Stores We Are the Company
Snappy Ubuntu Core Enabling secure devices with app stores We are the company behind Ubuntu. Canonical and Ubuntu | Best of both worlds CANONICAL Ubuntu Commercial backing #1 Linux Desktop for the #1 general purpose Linux OS: #1 Cloud OS Ubuntu Now also for Global Services, phones, tablets & Support, IoT devices Certification! It has never been easier to make a custom hardware appliance... Building an IoT Appliance Beaglebone Black Raspberry Pi 2 Snickerdoodle Intel NUC Qualcomm DragonBoard Samsung Artik But why? Old-School Modern Embedded Embedded RTOS/Embedded General Linux cross-compilation normal toolchain single-purpose multi-purpose constrained 256M RAM 2G SD rare updates constant updates offline connected expensive & custom cheap & easy software devel software devel Linux Server Linux Device Ops Ops centralised distributed supported field-serviced expensive cheap elastic spof cheap to service expensive to fix Autopilot App Business App Lite (free, included) Farmers ($500) Pro ($100) Avalanches ($2500) Elite ($250) Miners ($9950) $600 drone (hardware) Apps, Services and SaaS Infrastructure Certification. Support. Assurance. Security. Maintenance. Compatibility. Transactional updates Application confinement Familiar Ubuntu app development classic snappy app writable app writable any package can area area write to any file app snap app snap os writable files writable spaces os snap per snap read-only snaps kernel config filesystem kernel snap Snappy system architecture Software Innovator(s) Snap Snap Snap ● Automatic updates Library
How Containers Work Sasha Goldshtein @Goldshtn CTO, Sela Group Github.Com/Goldshtn
Linux How Containers Work Sasha Goldshtein @goldshtn CTO, Sela Group github.com/goldshtn Agenda • Why containers? • Container building blocks • Security profiles • Namespaces • Control groups • Building tiny containers Hardware Virtualization vs. OS Virtualization VM Container ASP.NET Express ASP.NET Express RavenDB Nginx RavenDB Nginx App App App App .NET Core .NET Core V8 libC .NET Core .NET Core V8 libC Ubuntu Ubuntu Ubuntu RHEL Ubuntu Ubuntu Ubuntu RHEL Linux Linux Linux Linux Linux Kernel Kernel Kernel Kernel Kernel Hypervisor Hypervisor DupliCated Shared (image layer) Key Container Usage Scenarios • Simplifying configuration: infrastructure as code • Consistent environment from development to production • Application isolation without an extra copy of the OS • Server consolidation, thinner deployments • Rapid deployment and scaling Linux Container Building Blocks User Namespaces node:6 ms/aspnetcore:2 openjdk:8 Copy-on- /app/server.js /app/server.dll /app/server.jar write layered /usr/bin/node /usr/bin/dotnet /usr/bin/javaControl groups filesystems /lib64/libc.so /lib64/libc.so /lib64/libc.so 1 CPU 2 CPU 1 CPU 1 GB 4 GB 2 GB syscall Kernel Security profile Security Profiles • Docker supports additional security modules that restrict what containerized processes can do • AppArmor: text-based configuration that restricts access to certain files, network operations, etc. • Docker uses seccomp to restrict system calls performed by the containerized process • The default seccomp profile blocks syscalls like reboot, stime, umount, specific types of socket protocols, and others • See also: Docker seccomp profile, AppArmor for Docker Experiment: Using a Custom Profile (1/4) host% docker run -d --rm microsoft/dotnet:runtime …app host% docker exec -it $CID bash cont# apt update && apt install linux-perf cont# /usr/bin/perf_4.9 record -F 97 -a ..
Conflict Resolution Via Containerless Filesystem Virtualization
Dependency Heaven: Conflict Resolution via Containerless Filesystem Virtualization Anonymous Author(s) Abstract previous installation, effectively preventing concurrent ver- Resolving dependency versioning conflicts in applications sions of that library from coexisting. The same is true for is a long-standing problem in software development and packages whose executable names does not change across deployment. Containers have become a popular way to ad- releases; unless the user renames the existing executable dress this problem, allowing programs to be distributed in a files prior to the installation of a new version it is notpos- portable fashion and to run them under strict security con- sible to keep both installations around. The problem with straints. Due to the popularity of this approach, its use has that approach is that it breaks package managers, as the re- started to extend beyond its original aim, with users often named files will not be featured in the package manager’s creating containers bundling entire Linux distributions to database and, consequently, will not be tracked anymore. run mundane executables, incurring hidden performance Further, unless executables depending on the renamed files and maintenance costs. This paper presents an alternative are modified to reflect their new path, users need todefine approach to the problem of versioning resolution applied to which executable to activate at a given time, usually through locally-installed applications, through a virtualization tool tricky management of symbolic
WAM TMArm User’s Guide Barrett Technology® Inc. Document: D1001 Version: AA.00 Table of Contents Getting Started ........................................................................................................................................................ 2 Unpacking.............................................................................................................................................................................................2 System Setup.........................................................................................................................................................................................3 System Startup ......................................................................................................................................................................................7 Hardware................................................................................................................................................................. 8 WAM Arm............................................................................................................................................................................................8 WAM Wrist: .......................................................................................................................................................................................11 PC & Control Software........................................................................................................................................