Published: November 9, 2018
Source
How LF Energy Plans to Open Source Energy | Linux.com
We’re running out of time to tackle climate change. Could an open source, distributed approach build the necessary momentum? Executive director of LF Energy tells Techworld about the new initiative which already has some enterprises on board.
The prospects from the UN’s most recent climate report are bleak. There are less than two decades until the point of no return for the planet’s climate, and the leaders of major countries seem to be retracting political willingness to fix the existential threat.
But, the roadblocks might not be as daunting as they first appear. Shuli Goodman, executive director of the newly created LF Energy group, hopes to fundamentally transform the way energy is distributed, reduce waste, and build new models that could be scaled out with an open source framework.
Read more at TechWorld
AWS IoT Core Improves the Ability to Ingest Large Amounts of Device Data at a Lower Cost
Basic Ingest optimizes data flow for high volume data ingestion workloads by removing the pub/sub Message Broker from the ingestion path. As a result, customers now have a more cost effective option to send device data to other AWS services while continuing to benefit from all the security and data processing features of AWS IoT Core.
Basic Ingest is now available in AWS GovCloud (US), US East (N Virginia), US East (Ohio), US West (Oregon), Asia Pacific (Mumbai), Asia Pacific (Seoul), Asia Pacific (Singapore), Asia Pacific (Sydney), Asia Pacific (Tokyo), China (Beijing) operated by Sinnet, EU (Frankfurt), EU (Dublin), and EU (London) AWS regions.
Visit the Basic Ingest Documentation to learn more about this feature. For more information about AWS IoT Core, visit the product page.
How to Use FSearch to Quickly Search Files in Linux
Search functions in Linux file managers aren’t all that great. Most are passable with minimal functionality and fairly slow search times, but there really aren’t any exceptional ones. Even KDE’s Baloo, that spends a ton of time indexing files, really doesn’t perform the way you’d hope a modern search would.
Thankfully, a better option has popped up in the form of FSearch. FSearch was created by a developer who was tired of the poor search performance in Linux file managers and decided to take matters into his own hands. While you might not feel that a standalone file search is necessary, you’ll probably change your mind pretty quickly after trying FSearch out.
Installation
FSearch is packaged and available in an Ubuntu PPA. That makes things a bit more complicated on other distributions, but it’s very simple on Ubuntu. Debian users can also take advantage of the PPA with a bit of extra work.
Ubuntu
The FSearch PPA is like any other. Import it with Apt, and update your sources.
sudo add-apt-repository ppa:christian-boxdoerfer/fsearch-daily
sudo apt update
Debian
If you’re on Debian, you can use the PPA, but it’ll just require a bit of extra work to get set up. First, open a terminal and create a new .list file with sudo.
sudo touch /etc/apt/sources.list.d/fsearch.list
Open the file with your text editor of choice, and add in the following two lines.
deb http://ppa.launchpad.net/christian-boxdoerfer/fsearch-daily/ubuntu cosmic main
deb-src http://ppa.launchpad.net/christian-boxdoerfer/fsearch-daily/ubuntu cosmic main
Now, import the keys for the repository.
sudo apt-key adv –keyserver keyserver.ubuntu.com –recv-keys 75555AFF5215AD9DBFD8CDB952B2FFB2DC496F40
The only thing left to do is update Apt.
You’re ready to start installing FSearch.
sudo apt install fsearch-trunk
Arch
FSearch is actually available in the AUR. You can use whichever AUR install process you’re most comfortable with to add it to your system. You can find the details on FSearch’s AUR page.
Fedora
Fedora users are going to need to build FSearch from its source. This method is officially supported, so you shouldn’t run into any hangups.
Start by installing the build requirements.
sudo dnf install automake autoconf intltool libtool autoconf-archive pkgconfig glib2-devel gtk3-devel git
Next, clone the source and change into the resulting directory.
git clone https://github.com/cboxdoerfer/fsearch.git
cd fsearch
Build FSearch and install it.
./autogen.sh
./configure
make
sudo make install
Now, you should have a working FSearch install that you can launch graphically.
Add Your Database
Open up FSearch. When the window first pops open, you’ll see a search field at the top, a big blank area with instructions to add a database, and not much else. FSearch is a search utility. It was built to do that one thing and do it well. In order to move as quickly as it does, FSearch relies on a database that it creates from the directories that you want to be able to search. The last step in getting set up is adding that directory.
Click on “Edit” on the menu along the top of your FSearch window. Pick “Preferences” in the resulting dropdown menu.
A new window will open with a series of tabs across the top. Click on the “Database” tab. The main body of the tab is occupied by a big white space.
To the left of that space are two tabs for “Include” and “Exclude.” They’re exactly what they sound like. The “Include” tab lists folders to include in your searches. The “Exclude” tab lists subfolders you want to exclude from the included folders.
On the right you’ll find two buttons to add or remove directories. Click the one to add a directory. It will open a file browser window. Choose a directory that you want searchable and confirm. You can absolutely just add your whole /home directory, which works pretty well.
When you’re done, FSearch will scan through the directory and build its database. This is surprisingly fast and actually won’t slow down your computer too much.
Searching with FSearch
You’ll notice that the big blank space on the main screen now has a magnifying glass icon faded into the background to signify that you’re ready to start searching. Start typing the name of a file or folder that you know you’ll find in your search directory. You’ll immediately see FSearch start populating the big empty space with possible results in order of accuracy.
Try a few more searches. You should also notice that FSearch gives you complete paths to your files in order to make it easy for you to access them after you’re done searching.
If you’re finding too many erroneous results coming from a cache folder or something similar, you can always return to the database tab under the Preferences menu and add the problem directory to the exclusion list.
There’s not much else to it. FSearch follows the Unix philosophy of “Do one thing and do it well,” and it really does do that one thing very well. FSearch is insanely fast, and it will find you your files without you needing to wait too long, or at all.
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Download Fedora ARM 29
Fedora is the next generation Linux distribution from Red Hat.
Fedora is now available from Red Hat and at distinguished mirror sites near you, and is also available in the torrent.
Fedora has expanded in this release to four binary ISO images and four source ISO images, and is available for both x86-64 and i386 and also PPC machines.
The Fedora Project is a Red-Hat-sponsored and community-supported open source project. It is also a proving ground for new technology that may eventually make its way into Red Hat products. It is not a supported product of Red Hat, Inc.
The goal of The Fedora Project is to work with the Linux community to build a complete, general purpose operating system exclusively from free software. Development will be done in a public forum. The project will produce time-based releases of Fedora Core about 2-3 times a year with a public release schedule.
The Red Hat engineering team will continue to participate in the building of Fedora Core and will invite and encourage more outside participation than was possible in Red Hat Linux.
By using this more open process, we hope to provide an operating system that uses free software development practices and is more appealing to the open source community.
gRPC Load Balancing on Kubernetes without Tears | Linux.com
Many new gRPC users are surprised to find that Kubernetes’s default load balancing often doesn’t work out of the box with gRPC. For example, here’s what happens when you take a simple gRPC Node.js microservices app and deploy it on Kubernetes:
While the voting service displayed here has several pods, it’s clear from Kubernetes’s CPU graphs that only one of the pods is actually doing any work—because only one of the pods is receiving any traffic. Why?
In this blog post, we describe why this happens, and how you can easily fix it by adding gRPC load balancing to any Kubernetes app with Linkerd, a CNCF service mesh and service sidecar.
Read more at Kubernetes Blog
How to Use Debian Backports
The software packages in a Debian stable version is very old compare to other distributions like Arch Linux or even Ubuntu. Debian stable releases are very stable and secure as it only includes thoroughly tested software packages. To ensure stability and security, new software packages are not used in Debian stable versions as the Debian team needs time to test them and make sure these packages meets the stability and security requirements of Debian stable releases.
So using old version of software packages is good in a way. If you’re looking for bleeding edge software packages in Debian, then one alternative is Debian testing releases. Debian testing has more up to date software packages. But don’t expect it to be like Arch Linux.
Let’s say, you need the stability of Debian stable and still need some specific up to date software packages which is available in the Debian testing releases. Well, that’s when Debian Backports package repository comes in. According to the official website of Debian, the Debian Backports packages are packages from the Debian testing release (or the next version of Debian) adjusted and recompiled for using in Debian stable releases.
The official website of Debian also states that, if you use Debian Backports packages, then upgrade to the next Debian release (when it’s released) will not cause problems at all as the packages are already available there. There is a little bit problem with Debian Backports packages. The packages are not extensively tested as in Debian stable packages. Again, Debian Backports packages may conflict with your Debian stable packages. So you should be careful when using Debian Backports packages.
Debian recommends you use only the packages you need from the Debian Backports package repository. You should not use all the available Backports packages on Debian stable.
In this article, I will show you how to use Debian Backports package repository on your Debian stable release. I will be using Debian 9 Stretch (which is the latest version of Debian stable release at the time of this writing) in this article. So Let’s get started.
Debian Backports package repository contains a lot of Debian packages. You can search to find out whether the package of software version you’re looking for is available in the Debian Backports package repository from your web browser.
First, go to the official website of Debian Backports package repository at https://backports.debian.org/Packages/
Then, type in the package name and click on search. If the package is available in the backports package repository, it should show up.
Adding Debian Backports Package Repository to Debian 9 Stretch:
In this section, I will show you how to add the Debian Backports package repository on your Debian 9 Stretch stable release. First, open up a Terminal and run the following command:
$ echo “deb http://ftp.debian.org/debian stretch-backports main” |
sudo tee /etc/apt/sources.list.d/backports.list
The Debian backports package repository should be added to your Debian 9 Stretch machine.
Now, update the APT package repository cache with the following command:
As you can see, the APT package repository cache is updated and it included the Debian backports package repository as well.
Adding Debian Backports Package Repository to Debian 8 Jessie:
In this section, I will show you how to add the Debian Backports package repository on your Debian 8 Jessie stable release.
First, open up a Terminal and run the following command to add the Debian Jessie Backports package repository to your Debian 8 Jessie machine:
$ echo “deb http://ftp.debian.org/debian jessie-backports main” |
sudo tee /etc/apt/sources.list.d/backports.list
Debian Backports package repository should be added to your Debian 8 Jessie machine.
Now update the APT package repository cache of your Debian 8 Jessie machine with the following command:
As you can see, the APT package repository cache is updated and it also includes the Debian Backports package repository.
Installing Packages from Debian Backports Package Repository:
By default, all backports package repositories are disabled on Debian. If you want to install a package from Debian backports package repository, you have to tell the APT package manager that you really do want to install a package from Debian backports package repository specifically. That’s a great safeguard.
To search for a package (let’s say owncloud) in the Debian backports package repository, run the following command:
On Debian 9 Stretch:
$ sudo apt -t stretch-backports search owncloud
On Debian 8 Jessie:
$ sudo apt -t jessie-backports search owncloud
As you can see, the backports repository packages are listed.
To install a package (let’s say owncloud-client) from Debian backports package repository, run the following command:
On Debian 9 Stretch:
$ sudo apt -t stretch-backports install owncloud-client
On Debian 8 Jessie:
$ sudo apt -t jessie-backports install owncloud-client
Now, press y and then press <Enter>.
As you can see, the packages are being downloaded from the Debian Backports package repository.
As you can see, the owncloud-client is installed from the Debian backports package repository.
As you can see, the ownCloud GUI client I just installed from the Debian backports package repository runs just fine.
Removing Packages from Debian Backports Package Repository:
If you want to remove a package that you installed from the Debian backports package repository, then this section is for you. To remove a package (let’s say owncloud-client) that you installed from the Debian backports package repository, run the following command:
On Debian 9 Stretch:
$ sudo apt -t stretch-backports remove owncloud-client
On Debian 8 Jessie:
$ sudo apt -t jessie-backports remove owncloud-client
Now, press y and then press <Enter>.
The owncloud-client package should be removed.
Removing Debian Backports Package Repository:
If you’ve followed this article to add Debian backports package repository on your Debian 9 Stretch or Debian 8 Jessie machine, then you can remove it very easily with the following command:
$ sudo rm -v /etc/apt/sources.list.d/backports.list
Debian Backports package repository should be removed.
Now, update the APT package repository cache with the following command:
The APT package repository cache should be updated.
So, that’s how you use Debian backports package repository on Debian. Thanks for reading this article.
Linux Today – Why VMware is Acquiring Heptio and Going All In for Kubernetes
Nov 07, 2018, 09:00
VMware is the company that did more than perhaps any other to help usher in the era of enterprise server virtualization, that has been the cornerstone of the last decade of computing. Now VMware once again is positioning itself to be a leader, this time in the emerging world of Kubernetes-based, cloud native application infrastructure.
You can now buy Linux on Microsoft’s Store
WLinux is the first commercial version of Linux, more precise the Windows Subssystem for Linux, on the Microsoft Store. It is advertised as a “fast Linux terminal environment for developers and pro-users built on Windows Subsystem for Linux (WSL) on Windows 10” and available for $19.99 on the Microsoft Store.
WLinux is not the first Linux-based application for Windows 10; users of the operating system can install Ubuntu, Debian GNU/Linux and other Linux versions for the Windows Subsystem for Linux as well from the Store.
The Windows Subsystem for Linux integrates Linux distributions into the Windows 10 operating system so that these become available. The implementation is fairly limited at this point in time as you are limited to running command line tools and some tools or applications even in the latest version of Windows 10 and Windows Server 2019.
Windows 10 version 1809 includes a new option to run a Linux shell from Explorer. You need to hold down the Shift-key before you right-click on a folder to use the “Open Linux shell here” option.
The installation of Linux on a Windows 10 PC does not provide full access to the desktop environment.
WLinux was optimized to run on the Windows Subsystem for Linux and that is probably the main reason why it is the first commercial Windows Subsystem for Linux application. The distribution uses Debian Gnu/Linux as its core.
The developers of WLinux removed some packages such as systemd from the image in an effort to reduce the overall size of the image and manageability.
The Linux environment for Windows 10 includes the setup tool wlinux-setup to customize environment-specific preferences using it.
It enables users to choose the default text editor, unpack development environments such as NodeJS, Python, Go or Ruby, or manage Windows and Azure deployments using PowerShell and azure-cli.
WLinux includes support for wslu, a tool collection for Linux on Windows 10 that includes five tools currently. The utilities may be used to redirect links to the default Windows web browser, convert Windows paths, or create shortcuts on the Windows desktop.
Support is not exclusive, however, as distributions such as Ubuntu, Debian, or Suse Linux Enterprise Server support it as well.
Other features of interest include:
- Support for graphical Linux applications.
- Apt package functionality to install open source packages from Debian repositories.
- Promise to patch Windows Subsystem for Linux bugs faster than any other Linux distribution available for Windows 10.
The money that is earned from sales flows directly into the project to finance development.
Purchases of WLinux in the Microsoft Store pay for a team of open source indie developers to add new features, test and release builds, evaluate WSL-related CVEs, and provide user support.
Additional information is available on the project’s official GitHub page.
Now You: What is your take on the Windows Subsystem for Linux?
Summary
Article Name
You can now buy Linux on Microsoft’s Store
Description
WLinux is the first commercial version of Linux, more precise the Windows Subssystem for Linux, on the Microsoft Store.
Download Fedora Server 29
Fedora is a well known and open source Linux operating system that is sponsored by Red Hat, a company that is a stable, powerful and fast operating system that can be used as the main OS for your everyday tasks. It is completely free to use, share and study.
Fedora is an enormous project with hundreds of developers and tens of thousands of community members worldwide. While the main Fedora edition features the GNOME desktop environment, the project is distributed in multiple editions, with the KDE, Xfce, LXDE and MATE desktop environments.
But these are only the official editions, as there are also various community spins that can be downloaded via Softpedia or from the project’s homepage. The Fedora Server edition reviewed here is an official edition that supports both the 32-bit (i386) and 64-bit (x86_64) architectures.
Available for download as installable-only DVDs
Being designed to be used as only on server machine, Fedora Server is available for download only as installable-only DVD ISO images, which means that it does not include a graphical desktop environment, but only a command-line one. From the boot menu you will be able to start the installation in graphical mode, as well as to test the integrity of the DVD (if booting from a DVD media), as well as to access advanced boot options like rescue mode, booting from a local drive or running a memory test.
Installing Fedora Server
As mentioned, the installation of Fedora Server takes place in graphical mode, which means that if you’ve installed Fedora before, you’ll have no problem installing the server edition. Basically, you’ll have to choose your native language, partition the disk, as well as to enter a password for the root (system administrator account).
Bottom line
In conclusion, the Server edition of Fedora is a really great server-oriented operating system that uses the latest upstream Linux kernel technologies and it include a wide variety of server-related packages.