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Xiao Liu Lab
Xiao Liu Lab
Jan 16, 2026 · Operations

Recover Accidentally Deleted Files on RHEL with extundelete – Full Step‑by‑Step Guide

This guide explains why extundelete can restore files deleted with rm on ext3/ext4 partitions, walks through installing the tool on various RHEL versions, shows how to safely stop writes, identify the affected partition, execute single‑file, directory or full‑partition recovery commands, verify results, and avoid common pitfalls, while also offering preventive measures to reduce future data loss.

File RecoveryLinuxOperations
0 likes · 19 min read
Recover Accidentally Deleted Files on RHEL with extundelete – Full Step‑by‑Step Guide
Raymond Ops
Raymond Ops
Apr 23, 2025 · Operations

Master Linux Syslog: Configure, Manage, and Rotate Logs Like a Pro

This guide explains how Linux syslog collects system messages, details common log files and their purposes, describes syslogd, klogd, and logrotate services, shows log formats, configuration syntax, and provides step‑by‑step examples for setting up both log receivers and senders.

LinuxRHELlogrotate
0 likes · 16 min read
Master Linux Syslog: Configure, Manage, and Rotate Logs Like a Pro
DevOps Operations Practice
DevOps Operations Practice
Sep 24, 2024 · Cloud Native

How to Install MiniKube on RHEL 8

This guide provides a step‑by‑step tutorial for installing MiniKube on RHEL 8, covering system updates, required dependencies, Docker and kubectl installation, MiniKube binary setup, cluster startup, verification, and optional add‑ons, ensuring a functional local Kubernetes environment.

DockerInstallationKubernetes
0 likes · 6 min read
How to Install MiniKube on RHEL 8
Open Source Linux
Open Source Linux
Jul 12, 2024 · Fundamentals

Top 10 Linux Distributions You Should Know in 2024

This article surveys the most popular Linux distributions—including Red Hat Enterprise Linux, Gentoo, Debian, Ubuntu, Linux Mint, Fedora, Kali Linux, CentOS Stream, Arch Linux, and OpenSUSE—highlighting their target audiences, key features, package management, and typical use cases for desktop, server, and security environments.

KaliLinuxOperating System
0 likes · 13 min read
Top 10 Linux Distributions You Should Know in 2024
21CTO
21CTO
Jul 5, 2024 · Fundamentals

How to Choose the Right Linux Distribution: A Beginner’s Guide

This guide explains what Linux distributions are, how open‑source licenses enable them, compares popular distros such as Ubuntu, Fedora, Mint, RHEL, SUSE and Kali, and helps newcomers decide which distro best fits their desktop, server or security needs.

FedoraLinuxRHEL
0 likes · 12 min read
How to Choose the Right Linux Distribution: A Beginner’s Guide
Architecture Digest
Architecture Digest
Jul 3, 2024 · Operations

CentOS End‑of‑Life and Viable Alternative Linux Distributions

The article explains that CentOS Linux 8 ceased updates at the end of 2021 and CentOS 7 will reach end‑of‑support on June 30, 2024, describes the shift to CentOS Stream, and outlines several alternative operating systems—including Rocky Linux, Ubuntu, RHEL, and domestic Chinese distributions—providing guidance for enterprises and developers on migration paths.

Alternative DistributionsCentOSLinux
0 likes · 9 min read
CentOS End‑of‑Life and Viable Alternative Linux Distributions
21CTO
21CTO
Aug 12, 2023 · Fundamentals

What’s OpenELA? How Three IT Giants Are Reviving Enterprise Linux After CentOS’s End

Three major IT companies—SUSE, Oracle, and CIQ—have formed the Open ELA alliance to provide source code for RHEL‑compatible downstream Linux distributions, offering a community‑driven alternative after Red Hat’s termination of CentOS, aiming to ensure stable, secure, and freely redistributable enterprise Linux.

CentOSEnterprise LinuxLinux Distribution
0 likes · 5 min read
What’s OpenELA? How Three IT Giants Are Reviving Enterprise Linux After CentOS’s End
Open Source Linux
Open Source Linux
Nov 24, 2022 · Operations

Why AlmaLinux Is the Ideal CentOS Replacement for Enterprise Servers

The article explains why AlmaLinux, a free RHEL‑compatible distribution, is a stable, financially backed alternative to CentOS, detailing its binary compatibility, seamless migration tools, support for server and desktop editions, and suitability for large cloud infrastructures.

AlmaLinuxCentOS MigrationLinux
0 likes · 7 min read
Why AlmaLinux Is the Ideal CentOS Replacement for Enterprise Servers
21CTO
21CTO
Dec 4, 2021 · Operations

Why CentOS Stream 9 Is the Preview of Future RHEL Releases

CentOS Stream 9, released before CentOS Linux 8’s end‑of‑life, serves as a continuously delivered distro that mirrors RHEL’s upcoming releases, using Fedora 34 as its base and undergoing rigorous testing to ensure stability comparable to RHEL itself.

CentOS StreamLinuxOperating System
0 likes · 4 min read
Why CentOS Stream 9 Is the Preview of Future RHEL Releases
21CTO
21CTO
Nov 13, 2021 · Cloud Native

What’s New in RHEL 8.5? Deep Dive into Container and Cloud‑Native Enhancements

RHEL 8.5, the latest Red Hat Enterprise Linux release, brings extensive container, Kubernetes, Ansible system‑role, and performance‑monitoring improvements—including Podman image support, signed container images, rootless OverlayFS, enhanced Cockpit console, and new roles for VPN, Postfix, LVM VDO, and Microsoft SQL Server—making it ready for any platform.

AnsibleContainersKubernetes
0 likes · 5 min read
What’s New in RHEL 8.5? Deep Dive into Container and Cloud‑Native Enhancements
Laravel Tech Community
Laravel Tech Community
Jul 15, 2021 · Fundamentals

CentOS 8 End of Life and the Shift to CentOS Stream

The article explains that CentOS 8 will cease maintenance next year, ending the free RHEL rebuild, introduces CentOS Stream as a rolling‑release bridge between Fedora and RHEL, and outlines the impact on CentOS 7 and the need to consider alternative distributions.

CentOSCentOS StreamEnd of Life
0 likes · 4 min read
CentOS 8 End of Life and the Shift to CentOS Stream
21CTO
21CTO
Dec 18, 2020 · Operations

Why Oracle Linux Is the Best Free RHEL‑Compatible Alternative to CentOS

With CentOS 8 reaching end‑of‑life and CentOS Stream becoming the sole upstream for RHEL, Oracle Linux emerges as a free, highly compatible RHEL‑based distribution offering long‑term support, a stable kernel, and a viable path for displaced CentOS users.

CentOSLinux DistributionOracle Linux
0 likes · 4 min read
Why Oracle Linux Is the Best Free RHEL‑Compatible Alternative to CentOS
21CTO
21CTO
Dec 9, 2020 · Operations

Why Red Hat Dropped Free CentOS and What It Means for Your Servers

Red Hat announced the end of the free CentOS Linux distribution, replacing it with the rolling‑release CentOS Stream, and detailed the support timelines for CentOS 7 and 8, urging users to consider RHEL subscriptions, build their own rebuilds, or migrate to alternative platforms.

CentOSLinuxRHEL
0 likes · 8 min read
Why Red Hat Dropped Free CentOS and What It Means for Your Servers
DevOps Cloud Academy
DevOps Cloud Academy
Sep 25, 2019 · Cloud Native

Step‑by‑Step Guide to Deploying an OpenShift 3.11 Cluster with a Local Yum Repository and Docker Registry

This guide details how to prepare two RHEL 7.4 nodes, configure a local Yum repository and HTTP server, set up password‑less SSH, adjust SELinux and iptables, distribute configuration files with Ansible, install Docker and a private registry, and finally deploy an OpenShift 3.11 cluster using the openshift‑ansible playbooks.

AnsibleCluster DeploymentDocker Registry
0 likes · 12 min read
Step‑by‑Step Guide to Deploying an OpenShift 3.11 Cluster with a Local Yum Repository and Docker Registry
dbaplus Community
dbaplus Community
Apr 7, 2016 · Cloud Native

Step‑by‑Step Guide to Building a Kubernetes Cluster on RedHat 7 with etcd, Master, Minions, Quagga Networking, and kube‑ui

This tutorial walks through building a complete Kubernetes cluster on RedHat 7 using yum‑based packages, covering etcd installation, master and minion setup, container‑to‑container networking with quagga, and optional kube‑ui deployment, while highlighting common pitfalls and providing reference resources.

KubernetesRHELetcd
0 likes · 9 min read
Step‑by‑Step Guide to Building a Kubernetes Cluster on RedHat 7 with etcd, Master, Minions, Quagga Networking, and kube‑ui
MaGe Linux Operations
MaGe Linux Operations
Jan 14, 2016 · Operations

Mastering High‑Availability Clusters: Concepts, Architecture, and Heartbeat Setup

This guide explains the fundamental concepts and layered architecture of high‑availability clusters, details the software components for each layer, compares RHEL/CentOS solutions, and provides step‑by‑step instructions for configuring heartbeat2 with haresource, including node preparation, authentication, resource definitions, and service failover.

HeartbeatLinuxRHEL
0 likes · 15 min read
Mastering High‑Availability Clusters: Concepts, Architecture, and Heartbeat Setup
MaGe Linux Operations
MaGe Linux Operations
Jul 14, 2014 · Operations

What Makes Red Hat Enterprise Linux 7 a Powerhouse for Modern Ops?

This article outlines the origins, release cycle, commercial licensing, feature set, and derivative distributions of Red Hat Enterprise Linux, focusing on version 7’s hardware support, kernel enhancements, storage, networking, virtualization, container integration, toolchain, and system management capabilities.

Enterprise OSLinuxRHEL
0 likes · 6 min read
What Makes Red Hat Enterprise Linux 7 a Powerhouse for Modern Ops?