Performance

How to Tune PostgreSQL Performance on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Tune PostgreSQL Performance on RHEL 10

Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying tune postgresql performance both straightforward and auditable. This tutorial covers the complete procedure for how to Tune PostgreSQL Performance on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. Prerequisites The procedure assumes […]

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How to Configure nftables Firewall on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure nftables Firewall on RHEL 9

nftables is the modern successor to iptables and is the default firewall framework in RHEL 9. It replaces iptables, ip6tables, arptables, and ebtables with a single unified tool, offering better performance through an improved kernel path, atomic rule replacement, and a cleaner, more readable configuration syntax. This tutorial covers everything you need to know to […]

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How to Configure iptables Firewall Rules on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Configure iptables Firewall Rules on RHEL 9

iptables has been the standard Linux packet-filtering firewall for over two decades, and while RHEL 9 ships with nftables and firewalld as the preferred tools, iptables remains available and is widely understood by seasoned administrators. Learning iptables gives you deep insight into how Linux netfilter works and is valuable for managing legacy systems or containers […]

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How to Install ClamAV Antivirus on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install ClamAV Antivirus on RHEL 9

ClamAV is an open-source antivirus engine widely used on Linux servers to detect malware in files destined for Windows users — such as email attachments, uploaded documents, and shared network storage. While Linux systems are largely immune to the Windows malware that ClamAV detects, running it is a responsible practice wherever Linux servers act as […]

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How to Set Up WireGuard VPN on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Set Up WireGuard VPN on RHEL 9

WireGuard is a modern, high-performance VPN protocol built into the Linux kernel since version 5.6. It uses state-of-the-art cryptography (Curve25519, ChaCha20, Poly1305) and has a dramatically smaller codebase than older solutions like OpenVPN or IPsec, making it easier to audit and less prone to vulnerabilities. On RHEL 9, WireGuard support is available through the kernel […]

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How to Tune System Performance with tuned on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Tune System Performance with tuned on RHEL 10

Introduction Setting up tune system performance with tuned on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Tune System Performance with tuned on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and […]

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How to Install SQL Server 2014 on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Install SQL Server 2014 on Windows Server 2012 R2

How to Install SQL Server 2014 on Windows Server 2012 R2 SQL Server 2014 is a natural pairing with Windows Server 2012 R2, offering AlwaysOn Availability Groups, in-memory OLTP (Hekaton), buffer pool extensions, and enhanced cloud integration with Microsoft Azure. Installing SQL Server 2014 correctly on Windows Server 2012 R2 requires attention to prerequisites, service […]

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How to Configure Storage Spaces with Tiering on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Configure Storage Spaces with Tiering on Windows Server 2012 R2

How to Configure Storage Spaces with Tiering on Windows Server 2012 R2 Storage Spaces, introduced in Windows Server 2012 and enhanced in Windows Server 2012 R2, is a software-defined storage technology that allows administrators to pool physical drives into virtual storage with resiliency, thin provisioning, and automated tiering. Storage Tiering — the key new feature […]

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How to Use PowerShell to Manage Active Directory at Scale on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Use PowerShell to Manage Active Directory at Scale on Windows Server 2012 R2

How to Use PowerShell to Manage Active Directory at Scale on Windows Server 2012 R2 Managing Active Directory for large organizations requires automation. Clicking through Active Directory Users and Computers to manage thousands of accounts is impractical and error-prone. On Windows Server 2012 R2, the ActiveDirectory PowerShell module provides over 150 cmdlets that cover every […]

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