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Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 8 (RHEL 8) is now available on all eRacks Systems with lots of developer-friendly capabilities.

Red Hat Inc. announced the official release of Red Hat Enterprise Linux (RHEL) 8 on May 7, 2019.

Red Hat Enterprise Linux 8 (RHEL 8) comes with new features and improvements as compared to the predecessor – RHEL 7. Some of the new features of RHEL 8 are as described below.

Kernel & OS

Red Hat Enterprise Linux 8.0 is based on Fedora 28 and upstream kernel 4.18. This provides users with a secure, stable and consistent foundation across hybrid cloud and Data Center deployments with tools needed to support all levels of workloads.

 

Storage and File systems

Stratis is the new local storage manager for RHEL 8. It provides managed file systems on top of pools of storage with additional features to the user. Stratis provides ZFS/Btrfs-style features by integrating layers Linux’s device mapper subsystem, and the XFS filesystem.

Stratis supports LUKSv2 disk encryption and Network-Bound Disk Encryption (NBDE) for more robust data security that can also be used for email security SaaS also, since there is threat of data loss in every digital medium as the technology progresses to a new level everyday. The OT cybersecurity solutions is the one companies are opting for these days to protect data.

  • With Stratis, you can easily perform storage tasks such as:
  • Maintain file systems
  • Manage snapshots and thin provisioning
  • Automatically grow file system sizes as needed

Pools are created from one or more storage devices, and volumes are created from a pool. The file system is created on top of a volume, hence resizing a volume automatically resize FS as well. The default file system used by Stratis is XFS.

Other notable Storage features are:

  • The XFS file system now supports shared copy-on-write data extent functionality. This enables two or more files to share a common set of data blocks. Creating shared copies does not utilize disk I/O nor consume additional disk space. The files sharing common blocks act like regular files.
  • The shared copy-on-write data extents are now enabled by default when creating an XFS file system, starting with the xfsprogs package version 4.17.0-2.el8.
  • Support for Virtual Data Optimizer (VDO) on all of the architectures supported by RHEL 8.
  • LUKS2 is now the default format for encrypting volumes. This replaces the legacy LUKS (LUKS1) format distributed in RHEL 7. LUKS2 provides encrypted volumes with metadata auto-recovery and redundancy if partial metadata corruption is encountered.

 

Virtualization

  • Red Hat Enterprise Linux 8 is distributed with qemu-kvm 2.12 with – Q35 guest machine type support, UEFI guest boot support, vCPU hot plug and hot unplug, NUMA tuning and pinning in the guest and guest I/O threading
  • The QEMU emulator introduces the sandboxing feature. QEMU sandboxing provides configurable limitations to what systems calls QEMU can perform, and thus makes virtual machines more secure
  • KVM virtualization now supports the User-Mode Instruction Prevention (UMIP) feature, which can help prevent user-space applications from accessing to system-wide settings
  • KVM virtualization now supports the 5-level paging feature, which significantly increases the physical and virtual address space that the host and guest systems can use.
  • NVIDIA vGPU is now compatible with the VNC console
  • Ceph storage is supported by KVM virtualization on all CPU architectures supported by Red Hat
  • Q35, a more modern PCI Express-based machine type is supported by RHEL 8 Virtualization. All virtual machines created in RHEL 8 are set to use Q35 PC machine type by default

 

eRacks/INTELLINATOR22

Configure your Own eRacks/INTELLINATOR Server With Red Hat Enterprise Linux 8 (RHEL 8).

 

Networking

Below are the new changes in the Networking Level:

  • RHEL 8 is distributed with TCP networking stack version 4.16, which provides higher performances, better scalability, and more stability.
  • The networking stack upgraded to upstream version 4.18
  • Iptables has been replaced by the nftablesframework as the default network packet filtering facility.
  • The nftables framework is the designated successor to the iptables, ip6tables, arptables, and ebtables tools. This provides a single framework for both the IPv4 and IPv6 protocols
  • The firewalld daemon now uses nftables as its default backend.
  • Support for IPVLAN virtual network drivers that enable the network connectivity for multiple containers.
  • Network Manager now supports single-root I/O virtualization (SR-IOV) virtual functions (VF). Network Manager allows configuring some attributes of the VFs, such as the MAC address, VLAN, the spoof checking the setting and allowed bitrate

 

Content Distribution

Red Hat Enterprise Linux 8 has two modes of Content distribution and will only need two repositories enabled.

  1. BaseOS repository – The BaseOS repository provides the underlying core OS content in the form of traditional RPM packages. BaseOS components have a life cycle identical to that of content in previous Red Hat Enterprise Linux releases.
  2. AppStream repository – The Application Stream repository provides all the applications you might want to run in a given userspace. Other software that has special licensing are available on a Supplemental repository.

 

Web servers, Web Tools, Web Management – Cockpit, Compilers, Languages & Databases, Software Management

Red Hat Enterprise Linux 8 includes Application Streams of multiple versions of databases, languages, compilers, and other tools available for your use.

RHEL 8 comes with Cockpit automatically installed and firewall ports required by Cockpit are automatically opened. Cockpit interface can be used to apply Policy-Based Decryption (PBD) rules to disks on managed systems.

RHEL 8 YUM package manager is now based on the DNF technology and it provides support for modular content, increased performance, and a well-designed stable API for integration with tooling. The version of RPM is 4.14.2 and it validates the whole package contents before it starts the installation.

 

Desktop Environment

RHEL default Desktop Environment is GNOME. The GNOME Project is supported by the GNOME Foundation. Gnome version 3.28 shipped in RHEL 8 which has automatic downloading of operating systems in Boxes. Other new features include:

  • New on-screen keyboard
  • New GNOME Boxes features
  • Extended devices support, most significantly integration for the Thunderbolt 3 interface
  • Improvements for GNOME Software, dconf-editor and GNOME Terminal
  • GNOME Software utility, which enables you to install and update applications and gnome-shell extensions.
  • GNOME Display Manager (GDM) use Wayland as their default display server instead of the X.org server

Features of Wayland display server

    • Stronger security model
    • Improved multi-monitor handling
    • Improved user interface (UI) scaling
    • The desktop can control window handling directly.

 

Security

RHEL 8 comes with support for OpenSSL 1.1.1 and TLS 1.3. This enables you to secure customer’s data with the latest standards for cryptographic protection.

RHEL 8 comes with System-wide Cryptographic Policies which helps you with the management of cryptographic compliance. No need to modify and tune specific applications.

OpenSSH has been rebased to version 7.8p1– with no support for SSH version 1 protocol, Blowfish/CAST/RC4 ciphers, hmac-ripemd160 message authentication code.

 

Red Hat Developer Subscriptions

Red Hat Developer members have been enjoying no-cost developer subscriptions for 3+ years now, and RHEL 8 is now automatically part of that. If your company wants developer support, there are several Red Hat Enterprise Linux Developer Subscriptions options with Red Hat support, too.

For more detail please contact eRacks Systems or visit Red Hat Enterprise Linux 8 official Page.

May 12th, 2019

Posted In: Linux, New products, News, Open Source, Operating Systems, virtualization

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fedora30Fedora 30 is now available on all eRacks systems.

Fedora is a community-driven Linux distro that’s sponsored by the open source giant Red Hat. As Fedora is the upstream source of the company’s commercial RHEL distro, it’s also used as a testing ground for RHEL. As Linux enthusiasts might already know, Fedora is known as an innovative Linux distro that doesn’t hesitate when it comes to testing new technologies and helping other distros by making changes upstream for all distros. Shipping with many useful open source software, it’s known for providing a GNOME-based fluid desktop experience.

 

 

 

Fedora community recently released Fedora 30 just after about the 6 months from the version release as Fedora 29. On Fedora magazine they wrote about the early release of Fedora 30.

It seems like it was just six months ago that we announced Fedora 29, and here we are again. Today, we announce our next operating system release. Even though it went so quickly, a lot has happened in the last half year, and you’ll see the results in Fedora 30.

Many desktop users love Red Hat’s community Linux Fedora. They have good reason. Fedora is a great Linux desktop. But Fedora’s far more than just a desktop. It comes in three major versions: One for the workstation, another for containers, and still another that works as a server both on your server hardware and on the cloud.

 

About many changes, “Matthew Miller”, the Fedora Project Leader, explained in a statement:

Computing scenarios don’t remain static and neither does Fedora. With the updates around Fedora 30, we’re providing an evolving spectrum of operating system editions to better meet diverse IT challenges. From containerized developer workspaces with Flatpak and Silverblue to expanded server and container infrastructure options in Fedora 30 Cloud and Fedora CoreOS, the Fedora Project remains focused on Linux innovation.

 

 

New features in Fedora 30

The biggest change in Fedora 30 is the new GNOME 3.32 desktop environment. Over the course of past few releases, GNOME desktop has made many changes to reduce its memory consumption; GNOME 3.32 takes things further and makes things more fluid and snappier by making enhancements in the core GNOME libraries.

On the visual front, the desktop environment adds a refreshed visual style that makes the overall look more polished. Moreover, the application icons, user icons, buttons, switches, etc., are also redesigned.

Talking about different packages that are included in the distro, you get the latest GCC 9, PHP 7.3, Bash 5.0, Ruby 2.6, and other apps.

This release is powered by the latest Linux 5.0, which brings better hardware support and display performance. You also get new features like support for energy-aware scheduling, Btrfs swap file, AMDGPU FreeSync, etc.

With the Fedora 30 release, the cloud and server releases are being combined into the Fedora Server Edition. Also, Fedora CoreOS is replacing Fedora Atomic Host as the container-focused offering. There are other variants as well, including Fedora Spins and Labs.

 

Fedora 30 Workstation

fedora_30_workstation

 

Fedora 30 Workstation includes the latest version of the GNOME interface, GNOME 3.32. Fedora also supports the other major Linux desktop environments, including Cinnamon, KDE, LXDE, MATE, and Xfce. It also includes fractional scaling, a refreshed visual style, animation improvements, and new icons. The net effect is to make a more visually pleasing desktop, which works well on high-end monitors.

Fedora Workstation now uses the “flicker-free boot” system, so the display does not turn on and off during the boot process.

You can also now run the Fedora desktop as a containerized desktop, Fedora Silverblue, with rpm-ostree at its heart. This replaces the traditional RPM package management with atomic upgrade/rollback. In this model, Fedora provides ready-made base operating system image. When you install a program, using either rpm-ostree or Flatpak, it creates essentially a restore point. These are then tracked, and if something goes wrong, you can reset to your restore point with minimal harm done.

 

Fedora 30 Server

fedora_30_server

 

Fedora 30, released April 30, 2019, has the following new and improved features:

The product definitions for Fedora’s “Editions” have been revamped. Fedora Cloud and Fedora Server editions are now a single product, simply called Fedora Server. Fedora Atomic Host has been replaced with Fedora CoreOS, in the wake of Red Hat’s acquisition of that container-based Linux distribution. Fedora Workstation remains mostly the same.

Fedora Server now supports Linux System Roles, created by Ansible to provide consistent ways to configure common Linux subsystems such as the network, the email system (Postfix), SELinux, and a few others. The list of roles is constantly being expanded.

Almost all Python 2 packages have been removed from the system, as part of Fedora’s switch from Python 2 to Python 3.

MongoDB has been removed from Fedora, as its licensing (the Server-Side Public License v1) is not believed to be compatible with other free software licenses.

Support for many deprecated cryptography standards is being removed: DES, 3DES, CRC32, and MD4. RC4 and MD5 are being marked as deprecated.

As with each edition of Fedora, many individual software components have been upgraded:

  • Bash 5.0
  • Boost 1.69
  • Erlang 21
  • FreeIPA 4.8 (which now uses Python 3.6)
  • GCC 9
  • glibc 2.29
  • Golang 1.12
  • GNOME 3.32
  • Haskell GHC 8.4
  • java-openjdk JDK12
  • PHP 7.3
  • Ruby 2.6
  • Vagrant 2.2

For more details please visit the official Fedora Releases/30/ChangeSet.

 

To upgrade your existing Fedora 29 installation to Fedora 30, you need to run the following commands in terminal one by one:

sudo dnf upgrade --refresh

sudo dnf install dnf-plugin-system-upgrade

sudo dnf install dnf-plugin-system-upgrade

sudo dnf system-upgrade reboot

You can also perform a clean installation of the Fedora 30 by visiting its download page and download the ISO file. Or click the link below:

If you feel like doing so, do give it a try or ask for the help from eRacks Systems’ experts.

May 4th, 2019

Posted In: Fedora, Linux, New products, News, Open Source, Operating Systems, Upgrades

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We all know that exercise is important in our daily lives, but we may not know why or what exercise can do for us.

It’s important to remember that we have evolved from nomadic ancestors who spent all their time moving around in search of food and shelter, travelling large distances on a daily basis. Our bodies are designed and have evolved to be regularly active.

In the same way that a sports car is designed to go fast, we are designed to move. If the sports car is taken out once a week for a 3 mile round trip through a town centre then it would probably develop engine problems fairly quickly. For the most healthier results while exercising take a look to these chillwell portable ac reviews.

Over time people too develop problems if they sit down all day at a desk or in front of the TV and minimise the amount of exercise they do.


The Benefits of Exercise

There are many benefits of regular exercise and maintaining fitness and these include:

  • Exercise increases energy levels

    Exercise improves both the strength and the efficiency of your cardiovascular system to get the oxygen and nutrients to your muscles.  When your cardiovascular system works better everything seems easier and you have more energy for the fun stuff in life. These are just some of the best healthy benefits that biofit probiotic provides.

  • Exercise improves muscle strength

    Staying active keeps muscles strong and joints, tendons and ligaments flexible, allowing you to move more easily and avoid injury. Strong muscles and ligaments reduce your risk of joint and lower back pain by keeping joints in proper alignment. They also improve coordination and balance. Read more about performer 8.

  • Exercise can help you to maintain a healthy weight

    The more you exercise, the more calories you burn.  In addition, the more muscle you develop, the higher your metabolic rate becomes, so you burn more calories even when you’re not exercising.  The result?  You may lose weight and look better physically which will boost your self-esteem. This is how male enhancement pills works.

  • Exercise improves brain function

    Exercise increases blood flow and oxygen levels in the brain. It also encourages the release of the brain chemicals (hormones) that are responsible for the production of cells in the hippocampus, the part of the brain that controls memory and learning.  This, in turn, boosts concentration levels and cognitive ability, and helps reduce the risk of cognitive degenerative diseases such as Alzheimer’s.

June 30th, 2015

Posted In: Fedora, News

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If you’re shopping for a pickup truck in 2018, you have a lot of great options to choose from. Most major automakers made significant improvements in technology, engine efficiency, and styling for the 2018 line of pickup trucks. Whether you are searching for strong towing capacity, great off-road capabilities, comfortable cabin or user-friendly technology, here are the five best pickup trucks that you should consider.
2018 Chevy Colorado

2018 Chevrolet Colorado: Being a mid-size pickup truck, Chevrolet has RWD or AWD configurations, three capable engines (including an available 3.6L V6 horsepower) as well as the GM-exclusive Duramax 2.8L Turbo-Diesel engine. The ZR2 model has the versatility to be a capable work trucks or dominating off-road. Colorado’s fuel economy is up to 22 city / 30 highway with horsepower between181 – 308 hp and a 0-60 mph time of 7.1 seconds. The price range of the 2018 model is from $20,200 to $40,315. The towing capacity can haul up to 7,700 lbs. Additionally, the Colorado has innovative safety and technology feature that help keep you protected and connected everyday! This is one of the best pickup trucks that is also compatible with the new Apple CarPlay technology as well as with Android Auto.
2018 GMC Sierra

GMC Sierra 1500. If you are looking for a full-size truck, GMC Sierra 1500 model is one of the best pickup trucks available! The Sierra is a tough overall truck offering four engine options including a V6 engine with the mild hybrid powertrain as well as the two available V8 engines which are are less fuel-efficient. The 2018 Sierra 1500 gets 18 city/24 highway fuel economy with the V6 that puts out 285 horsepower.  The V8 version makes 355 horsepower and gets 16 city/23 highway MPG. Sierra offers great towing capacity that is up to 12,500 lbs. The price for this particular model ranges from minimum $29,000 to maximum $41,495. Sierra’s  0 – 60 time is 6.6 seconds. Furthermore, Sierra also has quiet and classy higher trims with spacious seating especially in the crew cab version. The technology is top notch including compatibility with Apple CarPlay and Android Auto. Find the best vehicles at these freightliner truck auctions.
Ford F150

2018 Ford F150. This F150 model is the best selling truck every year for a good reason. The F-150 has one of the best payload capabilities up to 3,270 lbs as well as one of the greatest towing capacity up to 13,200 lbs. The 2018 model is 700 lbs lighter than the previous generation making it more fuel efficient. The horsepower ‎on the V8 engine is up to 395 hp, fuel economy is a respectable 20 city/26 highway and towing capacity 5,000 to 8,000 lbs.  The truck is fast with a 0-60 time of just 5.9 seconds. Ford F-150 newest model also has trailer backup assist help you maneuver better when hauling or towing as well as extremely spacious seating. The price ranges from a minimum of $27,380 to maximum $63,945. The F150 capable technology package including compatibility with both Apple CarPlay and Android Auto.
2018 Chevy Silverado

2018 Chevrolet Silverado. One of our favorite pickup trucks for 2018 is the Chevy Silverado. If you need heavy duty truck to transport cargo the fully equipped Silverado has the towing capacity of 12,500 lbs. The new Silverado 1500 also has a maximum payload up to 2,250 pounds. The Silverado 1500 offers three engine choices ranging from  285 to 420 HP.  Fuel efficiency isn’t the best offering 18 city / 24 highway and a 0-60 time of 6.2 seconds. The price of the Silverado ranges from $28,285 to $49,390. The powerful 6.2L V8 engine is a beast when it comes to towing. The eight-speed transmission option is preferred for towing over the standard six-speed. Additionally, the 2018 Silverado provides a well appointed cabin as well as comfortable and supportive seats with outstanding maneuverability and off-road performance. There is also a great deal of technology available for drivers to use including lane keep assisting and forward collision warning. The truck is compatible with both Apple CarPlay and Android Auto.
2018 Ram 1500

2018 Ram 1500. Another driver-friendly truck is the new RAM 1500. If having a diesel engine is important to you then the 2018 RAM 1500 with diesel engine is a great choice.The RAM 1500 has several engine choices including the beloved diesel engine, HEMI vV8 and two V6 versions.The RAM 1500 power ranges from 240 – 395 HP. Fuel economy on the V6 RAM is an impressive 20 city / 28 highway, and goes 0-60 mph in ‎7.0 seconds. RAM offers a smooth ride, as well as one of the nicest interiors in the class.The spacious rows of seats and high tech infotainment unit are impressive. The starting price for this model is around $27,095 up to a maximum price $53,995. Towing capacity ranges from 4,140 – 10,140 lbs. RAM 1500 offers the Uconnect infotainment system that features 4G LTE mobile hotspot, HD radio as well as compatibility with Apple CarPlay and Android Auto. 

 

January 2nd, 2014

Posted In: Fedora, News, Operating Systems

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