Tagged: Linux

rockylinux 0

Rocky Linux, The Rightful Successor to CentOS

CentOS born from nothing and was everything for some businesses but Red Hat deposed him from the kingdom. I have published a post about CentOS Replacement Candidates and Rocky Linux was one of candidates. Rocky Linux was under development by Rocky community and release candidate version of Rocky Linux was released on April 30, 2021.

Linux Distribution 1

HBA Port and Linux: What’s The Best Solutions to Disable?

Sometimes you need to do troubleshooting about storage connectivity but you don’t have access to datacenter or SAN switches and you need to shutdown one of HBA ports to check server side problem. If the port was a network adapter port, disabling was to easy but what about HBA port on operating system?

Linux Distribution 1

Create Your Own Time Zone in Linux

I don’t know why do you need to create your own time zone in Linux? But I had to customized TZ file and create my own time zone because of what does our application needs? . First lets see that what is TZ and TZ Database. Time Zone Database (TZ Database) The Time Zone Database (often called tz or zoneinfo) contains code and data that represent the history of local time for many representative locations around the globe. It is updated periodically to reflect changes made by political bodies to time zone boundaries, UTC offsets, and daylight-saving rules. Its management procedure is documented in BCP 175: Procedures for Maintaining the Time Zone Database. https://www.iana.org/time-zones You can download the latest time zone database from this link: https://www.iana.org/time-zones Zone File, UTC Offset, Rule The files are text files and contains the below information about a time zone: Definition of a time zone Daylight saving time (DST) rules Names of time zones Example # Rule NAME FROM TO TYPE IN ON AT SAVE LETTER/S Rule US 1918 1919 – Mar lastSun 2:00 1:00 D Rule US 1918 1919 – Oct lastSun 2:00 0 S Rule US 1942 only – Feb 9 2:00 1:00 W # War Rule...

distro test net details 2

Try Popular Linux Distributions Online

Linux is one of most poplar operating systems for desktop, server, virtualization and any other purposes (That was also the most prolific terms that you have read! 😀 But who can oppose? Regarding to test new versions of Linux distribution or new distributions, needs to have enough resources and time to download and install. I’m one of these guys, want to test new things! But don’t have enough time for installing, configuring and … . DistroTest.net (Try Popular Linux Distributions Online) What’s DistroTest.net? First of all, I like the line under the banner: “Test it before you hate it”. DistroTest.net provides a way to testing more than 200 Linux distribution via web browser. Here is the welcome message on website: Welcome to DistroTest.net On our website you will find many operating systems,which you can test directly online without a installation. There are no restrictions for the operating system:You can use all functions of the system,Uninstall and install software, test installed programs andeven delete or format the hard disk or system files… There is a simple menu to navigating users to find Linux distributions, any distribution has own web page which server specifications explained with details: Start Testing Distributions Online Click...

deduplication 0

Linux Deduplication and Compression: The Ultimate Guide to Saving Space

Cost of storage is the biggest piece of IT budget in any company (Of course not EMC, HPE or other like them 😀 ) and the storage spaces is eating by databases, other data files and backup files as well. Lot of those data file not be used once generated!. I have serious issue with these types of data and especially log files that one of dark data types. I can’t stop generating those data and the related teams are always crying about free space on their servers. They want just Linux servers (Seems, they don’t know Windows has NFS services as well), because they are using shared space on application servers to storing log files and others via NFS. I have offered other solutions such as using Windows as NFS server and use deduplication on Windows Servers, this feature is really good. I have used Windows deduplication on our backup proxy servers and result was incredible. Anyway, they want to Linux server (Not even other Unix-Like!), so I started to googling these: Don’t panic, most Linux’s modern file systems have no native deduplication and transparent compression and must be enabled with third-party software. Let’s see what is deduplication and...

centos logo 0

CentOS Linux 8 and CentOS Streams

Today, CentOS Linux 8.0.1905 has been released and available to download now. The version is first version of CentOS Linux 8. Same as previous version, the new version is based on Red Hat Enterprise Linux source codes but it’s totally free. CentOS 8 end of life is May 2029 (10 years, same as previous versions). Improvements and fixes are same as RHEL 8 and CentOS 8.0.1905, CentOS includes all new features actually. But there is a big change! Read more on CentOS-8 (1905) Release Notes. What’s CentOS Streams? CentOS Stream is available based on CentOS Linux 8 software packages the project has been building over the summer combined with the latest Red Hat Enterprise Linux (RHEL) 8 development kernel. CentOS Stream will be a rolling-release Linux distro that exists as a midstream between the upstream development in Fedora Linux and the downstream development for Red Hat Enterprise Linux (RHEL). It is a cleared-path to contributing into future minor releases of RHEL while interacting with Red Hat and other open source developers. This pairs nicely with the existing contribution path in Fedora for future major releases of RHEL. Read more on Presenting CentOS Stream. Download CentOS 8.0.1905 CentOS 8.0.1905 is available...

Linux Distribution 0

New Release, Knoppix 8.6

One of my firsts Linux experiences was Knoppix, I forget that what was exact version but I guess, it was Knoppix 3.1 or older version. After 17 years, I am still one of fans. Knoppix is one of most popular and firsts live Linux distributions on CD/DVD. What’s New in Knoppix 8.6? Version 8.6 of KNOPPIX is based on Debian/stable (buster), with some packages from Debian/testing and unstable (sid) for newer graphics drivers or desktop software packages. It uses Linux kernel 5.2.5 and Xorg 7.7 (core 1.20.4) for supporting current computer hardware. Changes in Knoppix 8.6: Updated Kernel and System software (Debian buster+sid), LXDE, the lightweight Knoppix standard desktop including file manager pcmanfm 1.3.1. Gnome 3 (Bootoption knoppix64 desktop=gnome). KDE 5 (knoppix64 desktop=kde). Accessible Adriane Audio Desktop. Wine 4.0 prerelease for directly installing and running Windows applications on Linux, also Windows 10. Qemu-kvm 3.1 as scriptable virtualization solution. Privacy-enhanced tor browser, upgradeable and startable via the Knoppix-menu. Web-Browser Chromium 76.0.3809.87, Firefox 68.0.1 with ad blocker Ublock Origin and Noscript. Libre Office 6.3.0-rc2, Gimp 2.10.8. Maths/Algebra-Software for teachers, solving equations etc.: Maxima 5.42.1 with direct integration of Maxima sessions into Texmacs, creating documentation directly during live lessions. 3D Productivity-Software Blender 2.79.b, Freecad 0.18, Meshlab 1.3.2, Open Scad...

cockpit system 0

Cockpit – Powerful Monitoring and Administration Tool

Monitoring and administration on Linux servers are not too easy, you need to some advanced experiences to managing Linux servers properly. Also most Linux advanced administrators using command-line to doing their tasks, using command-line to configuring, monitoring and troubleshooting is not too easy as well. There is some useful tools for managing Linux servers via web based portal. Cockpit is one of most powerful web based management for Linux system. Cockpit Supported OS Cockpit will install on the below Linux systems and it can manage those distributions: Fedora Red Hat Enterprise Linux CentOS Debian Ubuntu Project Atomic Clear Linux Arch Linux Cockpit is included in the Red Hat Enterprise Linux Extras repository in versions 7.1 and later. Cockpit is included in Ubuntu 17.04 and later, and available as an official backport for 16.04 LTS and later. Backports are enabled by default, but if you customized apt sources you might need to enable them manually. Cockpit packages are included in Oracle Linux 7.x (It’s not mentioned on official website). I have installed Cockpit on CentOS. Cockpit Installation Note: Some Cockpit features may be depended to Linux distribution and version. Fedora Cockpit comes installed by default in Fedora Server. To install Cockpit on other variants of Fedora use...

RedHat 0

What’s redhat-upgrade-tool?

The redhat-upgrade-tool provides a way to upgrade Red Hat Enterprise Linux 6 systems to Red Hat Enterprise Linux 7. The redhat-upgrade-tool command is a program to collect the information for upgrade and prepare the environment. It includes downloading kernel, and initial ram image, and packages.

PowerCLI 0

PowerCLI: Best Way to Run Invoke-VMScript and Challenges with Linux Guest

There is some challenges for passing Linux commands with parameters to guest OS. In most of cases, administrators have to pass commands as a PowerShell variable also I had some bad experiences, as an example: run “Sed” with some special parameters. I have to use lot of double quotes and single quotes to pass command via Invoke-VMScript to guest OS.

linux kvm 2

Is There Any Tools Like VMware Tools for KVM?

All VMware guys know that guest OS needs drivers for
paravirtualized devices and the drivers provided by VMware as a package which called VMware Tools. VMware Tools is available for supported operating systems and also there is an open-source which called Open-VM-Tools and it’s available for modern Linux distributions and installed by operating system installer.