Kernel Drivers

How to Set Up NFS on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Set Up NFS on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying set up nfs on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Set Up NFS on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel-container — vulnerability — patch and remediation guide (ELSA-2021-9221)

🟠 High   ⏱ 15–60 min  Last verified: 5 February 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-9221 Related CVEs: CVE-2021-28971 CVE-2021-3411 CVE-2021-28964 CVE-2021-28950 CVE-2021-29650 CVE-2021-29266 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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How to Configure Nginx with PageSpeed Module on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Configure Nginx with PageSpeed Module on CentOS Stream 9

Introduction How to Configure Nginx with PageSpeed Module on CentOS Stream 9 on CentOS Stream 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting […]

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How to Configure Windows Firewall on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Windows Firewall on Windows Server 2012 R2

How to Configure Windows Firewall on Windows Server 2012 R2 Windows Firewall with Advanced Security (WFAS) is the host-based stateful packet filter built into Windows Server 2012 R2. Unlike its consumer counterpart, the server version includes full inbound and outbound rule management, connection security rules for IPsec, and fine-grained profile controls for Domain, Private, and […]

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How to Install and Configure Cassandra on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install and Configure Cassandra on Debian 11

Introduction How to Install and Configure Cassandra on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 11. […]

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How to Install Nginx on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Install Nginx on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying install nginx on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Install Nginx on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. […]

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How to Configure DRBD for High Availability on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Configure DRBD for High Availability on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying configure drbd for high availability on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure DRBD for High Availability on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the […]

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How to Configure Swap Space on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure Swap Space on Debian 11

Introduction How to Configure Swap Space on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 11. This […]

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How to Configure Managed Service Accounts on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Managed Service Accounts on Windows Server 2016

How to Configure Windows Server 2016 Managed Service Accounts Managed Service Accounts (MSAs) were introduced in Windows Server 2008 R2 to address the administrative overhead of managing service account passwords. In Windows Server 2016, MSAs continue to provide automatic password management and simplified Service Principal Name (SPN) management for services running on a single computer. […]

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How to Install HAProxy on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Install HAProxy on CentOS Stream 9

Introduction How to Install HAProxy on CentOS Stream 9 on CentOS Stream 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is reproducible […]

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