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5 reasons why you should develop a Linux container strategy

Filed under
Linux
Server

Containerization has gained in popularity over the past few years. However, the subject still remains elusive for some. There are many different opinions revolving around this architectural paradigm, spanning from "containers are just a way to obfuscate bad code" to "you are a dinosaur if your entire infrastructure isn't already containerized."

If you have one of these strong opinions, this post probably is not for you. The following is for those who have not had the time nor bandwidth to research the topic and are not sure how the architecture might help within their organization. In this article, I give a simple explanation of some of the advantages of adopting a container strategy within your infrastructure and give you some quick and simple tips to get started. There are, in fact, many advantages of containerization within your infrastructure, both from a technical perspective and the development lifecycle perspective.

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YunoHost 4.1 Release Makes DIY Self-Hosting Even More Simple

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Server
Debian

If you don’t know what YunoHost is, it is a Debian-based operating system that aims to make self-hosting easy by simplifying the administration of the server and letting you easily deploy apps/services.

Initially, it was developed by “Kload” but when interest around YunoHost and self-hosting started growing, more people joined in as volunteers and since then, they have been developing and maintaining the operating system.

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Facebook, Twitter Proposing CentOS Hyperscale SIG With Newer Packages + Other Changes

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Red Hat
Server

Adding to the changes abound at CentOS beyond CentOS 8 going EOL at year's end to focus instead on CentOS Stream feeding into the future RHEL, the likes of Facebook and Twitter are now proposing a Hyperscale special interest group for this RHEL-based platform.

The Hyperscale SIG will be focused on catering the Linux distribution usage to large-scale infrastructures like those used at Facebook, Twitter, and other "hyperscaler" organizations like cloud providers.

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CentOS vs Ubuntu: Server distributions compared

Filed under
Red Hat
Server
Ubuntu

The main differences between the two main Linux distributions (free) in the server field: CentOS and Ubuntu. Here’s how to choose.

Anyone who has to choose a Linux distribution for their private server, virtual or dedicated, has practically an unlimited number of options. This is due to the open source nature of the penguin operating system, which allows anyone with the appropriate skills to create their own “ad-hoc” distribution for the most varied needs.

It must be said, however, that there are few “de facto” standards today in the context of Linux servers. Taking a look at the free options, and therefore accessible to practically everyone, the two dominant distributions are CentOS VPS and Ubuntu VPS. In this article we will see, briefly, what are the main characteristics that differentiate these two distributions, and in which cases it is better to choose one rather than the other. It should be clarified right away, however, that both are valid solutions, widely used precisely because they are excellent.

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16 Free open-source email servers for enterprise and individuals

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Server

A mail server is a software package that regulate sending and receiving emails using email protocols over the internet.

Mostly, we are using several email services like Gmail, Outlook and ProtonMail. However, enterprise often require to use their infrastructure services.

Many users and companies tend to have their mail servers to own and maintain their data and keep everything in their control.

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19 Free open-source self-hosted Invoicing and billing solutions

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Server
OSS
Web

In a dynamic business environment invoices are created regularly and require custom workflow according to the enterprise business process.

Invoice and order management solutions are built to manage billing and invoicing documents generally. Some of them manage orders and post-sale subscription billing.

Most of ERP (Enterprise Resources Planning) solutions include invoice, billing and order management features.

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Docker Alternative Container Tools in 2021

Filed under
GNU
Linux
Server

Docker is the most popular and widely used free and open-source container management system. Docker helps in building, deploying, and shipping software applications in an isolated environment; known as a container. A container contains the libraries, dependencies, and configurations required for the software package to run and work properly.

In the past, Docker has been the only go-to easy-to-use containerization technology. Many projects have come as Docker alternative and competitors in the market over the past few years. Some of the common Docker alternatives in the market are listed as follows.

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10 Linux System Administrators New Year’s Resolutions for 2021

Filed under
GNU
Linux
Server

It is a time to make our New Year’s resolutions. Regardless of your experience level as a Linux system administrator, we think it is worth and well to set goals for growth for the next 12 months.

In case you are out of ideas, in this post we will share 10 simple professional resolutions that you may want to consider for 2021.

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2020 Time Zone Database (tzdata) changes

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Red Hat
Server

Daylight saving time transitions, a zone name change, and the removal of some obsolete files: These are some of the changes that occurred in the Time Zone Database (tzdata) package that provides Red Hat Enterprise Linux (RHEL) and applications with time zone information.

The GNU C Library (glibc) makes use of the tzdata package in order to make APIs such as strftime() work correctly, while applications such as /usr/bin/date make use of this information to print the local date. The tzdata package contains the data files documenting both current and historic transitions for various time zones around the world. This data represents changes required by local government bodies or by time zone boundary changes, as well as changes to UTC offsets and daylight saving time (DST).

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IBM/Red Hat/Fedora, Oracle, and Servers

Filed under
Red Hat
Server
  • Red Hat unveils common Kubernetes platform for Windows and Linux

    Red Hat has announced the general availability of its common Kubernetes foundation for Windows and Linux container workloads: Red Hat OpenShift Support for Windows Containers.

    Containers allow organizations to package and run Windows and Linux applications on-premises and in the cloud. With Red Hat’s new service, enterprises can simultaneously manage Linux and Windows-based containerized workloads, eliminating the need for parallel software processing across hybrid cloud environments.

  • Six courses to build your technology skills in 2021

    The new year is a great time to be thinking about your career and where you want to take it. Why not take advantage of the opportunity to learn new sought-after skills with IBM courses? You can enroll free of charge, work at the time and pace that’s right for you, and open up brand new career opportunities in 2021.

  • Oracle Linux 8: Oracle VM VirtualBox made easy with short training videos

    A popular tool for developers and users creating cloud and local applications without the overhead of using a full server environment, Oracle VM VirtualBox runs on standard x86 desktop and laptop computers. It allows users to set up multi-platform virtual machine environments for software development, testing, and general purpose operating system (OS) virtualization, with optional runtime encryption. Software engineers can develop for cloud native environments from within Oracle VM VirtualBox VMs directly on their Windows, Mac OS, Linux, and Oracle Solaris machines, making it easier to create multi-tier applications with just a standard laptop.

    Oracle VM VirtualBox also enables users to create and update virtual machines locally, including the OS and applications, and then package them into an industry standard file format for easy distribution and cloud deployment in conjunction with Oracle Linux KVM, or other server virtualization solutions. Oracle VM VirtualBox allows users to run nearly any standard x86 OS hosting applications that are not available natively on their systems.

  • Fedora 34 Planning To Make Use Of Systemd-OOMD To Improve Low Memory Experience - Phoronix

    At the end of November systemd 247 released with the new Out-of-Memory Daemon (systemd-oomd) and for the Fedora 34 release next year that will likely be enabled by default for all spins.

    Systemd-OOMD aims to improve the Linux low-memory / OoM experience and is based on code originally written by Facebook for their Linux servers and then adapted for Linux desktop memory pressure scenarios. Systemd-OOMD allows monitoring for resource contention and can kill opt-in processes when the memory/SWAP pressure is above a predefined threshold.

  • IBM To Acquire Finnish Cloud Firm Nordcloud
  • MontaVista Enhances MVShield For CentOS Service

    MontaVista Software LLC is renewing its commitment to providing MVShield for CentOS Service for both existing and new customers interested in securing high-quality support and maintenance services for their products and platforms on long-term maintained CentOS minor releases.

    Despite the recently announced change in the CentOS Project’s strategy to focus future development on the CentOS Stream at the end of 2021, MontaVista will continue to provide long-term branch maintenance services uninterrupted and unchanged.

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  • 10 lessons from sysadmins adapting to change in 2020

    While 2020 will certainly be remembered for elections, protests, and most of all, the COVID-19 pandemic, a lot of other things changed in 2020, including a whole lot of cool changes in technology. Through it all, we could count on system administrators to do what they do best. Perhaps more so than ever, as we all moved from physical offices to working from home. We generated more load than ever on our infrastructure as more users relied on virtual private networks and videoconference tools to get their daily work done.

  • A Custom Kubernetes Scheduler to Orchestrate Highly Available Applications

    As long as you're willing to follow the rules, deploying on Kubernetes and air travel can be quite pleasant. More often than not, things will "just work". However, if one is interested in travelling with an alligator that must remain alive or scaling a database that must remain available, the situation is likely to become a bit more complicated. It may even be easier to build one's own plane or database for that matter. Travelling with reptiles aside, scaling a highly available stateful system is no trivial task.

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More in Tux Machines

Proprietary Software and Digital Restrictions (DRM)

  • GitHub still won’t explain if it fired someone for saying ‘Nazi,’ and employees are pissed

    The current conflict began the day of the riots in Washington, DC when a Jewish employee told co-workers: “stay safe homies, nazis are about.” Some colleagues took offense to the language, although neo-Nazi organizations were, in fact, present at the riots. One engineer responded: “This is untasteful conduct for workplace [in my opinion], people have the right to protest period.”

  • Amazon Web Services opens first office in Greece

    It said services covered areas from big data analytics and mobile, web and social media applications to enterprise business applications and the internet of things.

  • Critical Microsoft Defender Bug Actively Exploited; Patch Tuesday Offers 83 Fixes

    Researchers believe the vulnerability, tracked as CVE-2021-1647, has been exploited for the past three months and was leveraged by hackers as part of the massive SolarWinds attack. Last month, Microsoft said state-sponsored hackers had compromised its internal network and leveraged additional Microsoft products to conduct further attacks.

    Affected versions of Microsoft Malware Protection Engine range from 1.1.17600.5 to 1.1.17700.4 running on Windows 10, Windows 7 and 2004 Windows Server, according to the security bulletin.

  • Making Clouds Rain :: Remote Code Execution in Microsoft Office 365

    TL;DR; This post is a story on how I found and exploited CVE-2020-168751, a remote code execution vulnerability in Exchange Online and bypassed two different patches for the vulnerability. Exchange Online is part of the Office 365 suite that impacted multiple cloud servers operated by Microsoft that could have resulted in the access to millions of corporate email accounts.

  • Dropbox lays off 11% of its workforce as COO departs

    Dropbox in November provided revenue guidance of $497 million to $499 million for the fourth quarter. The company said at the time that it’s aiming to achieve margins of 28% to 30% in the long term.

  • Technical Error 'Saw 150,000 U.K. Police Records Wiped' From Databases

    Police have been asked to assess if there is a threat to public safety after it was revealed that thousands of police records were deleted in error, including data on fingerprints, DNA, and arrest histories.

    The error, first reported in the Times, saw 150,000 files lost, with fears it could mean offenders go free. A coding error is thought to have caused the earmarking of the files for deletion.

    The U.K. Home Office said the lost entries related to people who were arrested and then released without further action and no records of criminal or dangerous people had been deleted. Home secretary Priti Patel is now under pressure to explain the mistake, which the opposition Labour party said "presents huge dangers" for public safety.

  • January 2021 Linux Foundation Newsletter: Bootcamp Sale, SolarWinds Orion, New Kubernetes & WebAssembly Classes, LFX Webinar Series
  • How I hijacked the top-level domain of a sovereign state

    Note: This issue has been resolved and the .cd ccTLD no longer sends NS delegations to the compromised domain.

    TL;DR: Imagine what could happen if the country-code top-level domain (ccTLD) of a sovereign state fell into the wrong hands. Here’s how I (@Almroot) bought the domain name used in the NS delegations for the ccTLD of the Democratic Republic of Congo (.cd) and temporarily took over 50% of all DNS traffic for the TLD that could have been exploited for MITM or other abuse.

  • Apple begins blocking M1 Mac users from side loading iPhone and iPad applications

    As a refresher, Apple Silicon Macs allow users to run iOS and iPad applications on their Mac, but developers can opt out of allowing their apps to be installed on the Mac. This is the path that many developers have taken, making the necessary change in App Store Connect to remove their app from the Mac App Store.

    But with that being said, until today, you could manually install iOS apps like Netflix, Instagram, and Facebook on an M1 Mac by using their respective IPA files downloaded under a valid Apple ID. Many people were using tools such as iMazing to complete this process.

    9to5Mac has now confirmed that, starting today, this is no longer possible unless the application is available on the Mac App Store. Apple has flipped the necessary sever-side switch to block iPhone and iPad applications from being installed on Apple Silicon Macs.

  • Apple is blocking Apple Silicon Mac users from sideloading iPhone apps

    Apple has turned off users’ ability to unofficially install iOS apps onto their M1 Macs (via 9to5Mac). While iOS apps are still available in the Mac App Store, many apps, such as Dark Sky and Netflix, don’t have their developer’s approval to be run on macOS. Up until now, there was a workaround that allowed the use of third-party software to install the apps without having to use the Mac App Store, but it seems like Apple has remotely disabled it.

    When we tried to install an unsupported app on an M1 Mac running macOS 11.1, we got an error message saying that we couldn’t install it and should “try again later”. You can see a screenshot at the top of this article.

  • Apple TV Plus Free Subscriptions Extended Again, This Time Through July 2021

    The tech giant is extending the free-access period for Apple TV Plus customers who have signed up through its 12-month free subscription offer through July 2021. That’s after it had previously pushed that gratis period to February. So if you were among the first to take the one-year-free deal back in November 2019, that’s turned into 21 months free of Apple TV Plus.

  • Spotify Enters Settlement Talks With PRO Music Rights Founder Jake P. Noch

    But a new legal filing, shared with DMN this afternoon, reveals that Spotify and Noch have officially entered settlement talks. The involved parties “jointly” moved for a 60-day stay, “including discovery and all deadlines,” so that they can “attempt to negotiate a resolution of this matter,” the three-page-long document (dated January 13th, 2021) indicates.

    Furthermore, the filing specifies that Sosa Entertainment, Jake P. Noch, and Spotify “have recently made progress towards a potential resolution of the litigation.” The joint motion doesn’t elaborate upon the terms of this possible agreement – though Noch said in a statement that he’s eager to begin working towards an “excellent resolution” in earnest.

  • The FSF fights for your right to repair

    It is this example of automated vehicles that served as inspiration for the FSF's animated video Fight to Repair.

    However, any technology we use could potentially be co-opted by the proprietary, DRM-controlled subscription model Tesla and the tractor manufacturers are proposing. Imagine your "smart home" having a broken lock, or worse, being broken into, and not having the control, or the simple right to repair the bug. Countless other examples can be found showing us that the key to a free future is the right to repair. We need to fight for a future in which the software used is free in order to maintain ownership and control not only over our technology, but over our lives.

Debian Developers: Christian Kastner, Junichi Uekawa, and Michael Prokop

  • Christian Kastner: Keeping your Workstation Silent

    I've tried numerous coolers in the past, some of monstrous proportions (always thinking that more mass must be better, and reputable brands are equally good), but I was never really satisfied; hence, I was doubtful that trying yet another cooler would make a difference. I'm glad I tried the Noctua NH-D15 anyway. With some tweaking to the fan profile in the BIOS, it's totally inaudible at normal to medium workloads, and just a very gentle hum at full load—subtle enough to disappear in the background. For the past decade, I've also regularly purchased sound-proofed cases, but this habit appears anachronistic now. Years ago, sound-proofed cases helped contain the noise of a few HDDs. However, all of my boxes now contain NVMe drives (which, to me, are the biggest improvement to computing since CPUs going multi-core). On the other hand, some of my boxes now contain powerful GPUs used for GPGPU computing, and with the recent higher-end Nvidia and AMD cards all pulling in over 300W, there is a lot of heat to manage. The best way to quickly dump heat is with good airflow. Sound-proofing works against that. Its insulation restricts airflow, which ultimately causes even more noise, as the GPU's fans need to spin at very high RPMs. This is, of course, totally obvious in hindsight.

  • Junichi Uekawa: It's been 20 years since I became a Debian Developer.

    It's been 20 years since I became a Debian Developer. Lots of fun things happened, and I think fondly of the team. I am no longer active for the past 10 years due to family reasons, and it's surprising that I have been inactive for that long. I still use Debian, and I still participate in the local Debian meetings.

  • Michael Prokop: Revisiting 2020

    Mainly to recall what happened last year and to give thoughts and plan for the upcoming year(s) I’m once again revisiting my previous year (previous editions: 2019, 2018, 2017, 2016, 2015, 2014, 2013 + 2012). Due to the Coronavirus disease (COVID-19) pandemic, 2020 was special™ for several reasons, but overall I consider myself and my family privileged and am very grateful for that. In terms of IT events, I planned to attend Grazer Linuxdays and DebConf in Haifa/Israel. Sadly Grazer Linuxdays didn’t take place at all, and DebConf took place online instead (which I didn’t really participate in for several reasons). I took part in the well organized DENOG12 + ATNOG 2020/1 online meetings. I still organize our monthly Security Treff Graz (STG) meetups, and for half of the year, those meetings took place online (which worked OK-ish overall IMO). Only at the beginning of 2020, I managed to play Badminton (still playing in the highest available training class (in german: “Kader”) at the University of Graz / Universitäts-Sportinstitut, USI). For the rest of the year – except for ~2 weeks in October or so – the sessions couldn’t occur. Plenty of concerts I planned to attend were cancelled for obvious reasons, including the ones I would have played myself. But I managed to attend Jazz Redoute 2020 – Dom im Berg, Martin Grubinger in Musikverein Graz and Emiliano Sampaio’s Mega Mereneu Project at WIST Moserhofgasse (all before the corona situation kicked in). The concert from Tonč Feinig & RTV Slovenia Big Band occurred under strict regulations in Summer. At the beginning of 2020, I also visited Literaturshow “Roboter mit Senf” at Literaturhaus Graz.

Games: Familiars.io, Valve and Godot

  • Familiars.io is a MMO monster catching game where the creatures have permadeath

    Well this is quite unusual. You've played monster catching games before but not like this. Familiars.io put a fresh spin on it all and it's quite ingenious. Developed as a pixel-art retro-looking browser game, it's super accessible since you can play it on pretty much anything that can run some simple graphics in a browser window. It's an MMO too, so you can join up with others and chill out. When you want to, go off and catch some monsters, engage is some PvP and perhaps find a new favourite game waiting for you.

  • What we expect to come from Valve to help Linux gaming in 2021 | GamingOnLinux

    By now you've probably heard either through us in our previous article or elsewhere that Valve are cooking something up to help Linux gaming even further. We have an idea on what one part of it is. Valve already do quite a lot. There's the Steam Play Proton compatibility layer, the new container runtime feature to have Linux games both natively supported and Windows games in Proton run through a contained system to ensure compatibility, their work on Mesa drivers and much more. In Valve's review of Steam in 2020 that we covered in the link above, one thing caught our eye and has been gaining attention. Valve mentioned for 2021 they will be "putting together new ways for prospective users to get into Linux gaming and experience these improvements" so what exactly does that mean? Well, a big part of that might have already been suggested directly.

  • Godot Engine - Dev snapshot: Godot 3.2.4 beta 6

    While our main focus stays on the 4.0 branch, the current stable 3.2 branch is receiving a lot of great improvements, and the upcoming 3.2.4 release is going to be packed with many new features.

Zeroshell 3.9.5 Released

Zeroshell 3.9.5 is ready. In this release TLS 1.0 has been disabled and TLS 1.2 enabled for HTTPS. This improves security and compatibility with new browser releases. Read more