⚙️

Server Configuration

Nginx, Apache, databases, and server software setup guides

25 tutorials

An open server-rack door, a stamped paper certificate, and a sealed envelope on a steel shelf, cool room light, no logos.

ca-certificates USN-8944-1 Drops One Root, Not Eight Keys.

USN-8944-1 removes emSign ECC Root CA - G3 from ca-certificates. Go 1.27.3 blocks eight intermediate keys. Those are not the same update.

October 22, 2026 ⏱️ 25 minutes

ca-certificatesUSN-8944-1eMudhra

Three closed folders of different thicknesses on a steel shelf, with a coiled ethernet cable and a small brass key.

⚙️ server-config Intermediate

USN-8933-1 Is RabbitMQ. The Go Fix Is Not.

USN-8933-1 is rabbitmq-server, and the version changes with the release. USN-8883-2 is golang-1.23 on 22.04 only. Restart is a separate line.

October 17, 2026 ⏱️ 20 minutes

UbuntuUSN-8933-1RabbitMQ

A dim server aisle with one open rack, a blank checklist on the rail, and a closed laptop, no logos and no readable text.

⚙️ server-config Intermediate

Directory Server Has Two Advisory IDs. One Is the Critical.

LinuxCompatible calls RHSA-2026:79217 the only Critical. An October 11 note says match RHSA-2026:64793. The two CVE lists do not match.

October 14, 2026 ⏱️ 25 minutes

LinuxRed HatDirectory Server

Two rack servers in a beige machine room, one with a green status light and one with an amber light, a face-down printout and unplugged ethernet cables.

⚙️ server-config Intermediate

NGINX Upgraded. The Brotli Module Did Not.

A held Brotli module built for 1.29.8 fails nginx -t against 1.31.5. APT still upgrades NGINX if the ABI label froze at 1.25.0.

October 8, 2026 ⏱️ 30 minutes

NGINXAPTdynamic modules

An open equipment rack beside a separate laptop on a metal cart, cool white light, no vendor logos and no readable text.

⚙️ server-config Intermediate

Patch the Management Console, Not Just the Switch

InfraTrust's September window logged 1,699 CVEs and 84 revised advisories. The management console that holds credentials is the config path.

September 30, 2026 ⏱️ 45 minutes

management consoleEclypsiumpatch management

A rack-mounted server with a highlighted network cable and a printed checksum sheet on the desk

⚙️ server-config Intermediate

The Ted Backdoor Was Built Into HAProxy. Verify the Binary.

Rapid7 found a DPRK toolkit compiled into HAProxy 2.8.12, not exploited through it. Here is how to checksum your reverse proxy, catch /tmp pipes, and stop building load balancers on the edge box.

September 8, 2026 ⏱️ 35 minutes

HAProxyLinuxsupply chain

Terminal showing Linux memory management commands and ZRAM configuration

⚙️ server-config Intermediate

Linux Swap and ZRAM: A Complete Configuration Guide for Server Performance

Learn how to configure Linux swap and ZRAM for optimal server performance. Covers swap partitions, swap files, ZRAM setup, swappiness tuning, and memory management best practices.

August 24, 2026 ⏱️ 25 minutes

LinuxswapZRAM

Terminal window showing Unbound DNS resolver configuration and DNS query logs on Ubuntu server

⚙️ server-config Intermediate

How to Set Up a Local DNS Cache with Unbound on Ubuntu 24.04

Run your own recursive DNS resolver for faster lookups, better privacy, and zero dependence on your ISP's DNS infrastructure.

August 16, 2026 ⏱️ 25 minutes

DNSUnboundUbuntu 24.04

Terminal screen showing Nginx configuration with green text on dark background

⚙️ server-config Intermediate

Nginx Security Hardening: A Complete Guide for Production Servers

Step-by-step guide to securing your Nginx server in 2026. Cover TLS configuration, security headers, rate limiting, and performance optimization for production deployments.

August 10, 2026 ⏱️ 25 minutes

NginxsecurityTLS

A terminal screen showing a completed CIS benchmark compliance report with green checkmarks and a score of 98%, rendered in terminal green on dark background

⚙️ server-config Intermediate

Automating Linux Server Hardening with CIS Benchmarks: Stop Doing This Manually

The CIS benchmarks define over 200 security controls for a typical Linux server. Running through them manually takes hours and guarantees you'll miss something. Here's how to automate the entire process.

July 31, 2026 ⏱️ 25 minutes

LinuxSecurityCIS

⚙️ server-config

NGINX CVE-2026-42533: A Critical 9.2-Severity Flaw Affects Every Version Since 2011 — Here's How to Fix It

A critical heap buffer overflow vulnerability in NGINX (CVE-2026-42533, CVSS 9.2) affects every version from 0.9.6 through 1.31.2. This guide covers how to check if you're vulnerable, upgrade paths for every distribution, and what to do if you can't patch immediately.

July 22, 2026

nginxsecurityCVE

A terminal window displaying SSH connection logs with a red warning indicator, styled with the serverhi green-on-black terminal aesthetic.

⚙️ server-config Intermediate

Critical libssh2 Flaw (CVE-2026-55200): How to Check If Your Servers Are Affected and Patch Immediately

A public PoC is now circulating for CVE-2026-55200, a critical libssh2 vulnerability with a 9.2 CVSS score. Here's how to identify affected systems, verify your version, and apply the fix across your server fleet.

July 1, 2026 ⏱️ 20 minutes

SSHsecuritylibssh2

Nginx server terminal with HTTP/3 QUIC configuration displayed on a dark terminal interface

⚙️ server-config Intermediate

Nginx HTTP/3 with QUIC on Ubuntu 24.04: Complete Configuration Guide

Step-by-step guide to configuring Nginx with HTTP/3 and QUIC support on Ubuntu 24.04 LTS, including TLS 1.3, UDP listeners, and performance optimization.

June 19, 2026 ⏱️ 25 minutes

NginxHTTP/3QUIC

Ubuntu server terminal showing automated patch management configuration

⚙️ server-config Intermediate

Risk-Based Patch Management on Ubuntu Servers: A Practical Guide for 2026

Configure automated patch management with risk-based prioritization on Ubuntu 26.04 LTS. Align with CISA BOD 26-04 and KEV catalog best practices.

June 14, 2026 ⏱️ 25 分钟

UbuntuPatch ManagementServer Security

⚙️ server-config

Apache as Reverse Proxy: Configuration, Performance, and Comparison with Nginx

A hands-on guide covering configuration, troubleshooting, and best practices for apache as reverse proxy - configuration, performance, and comparison with nginx.

April 19, 2026

ApacheReverse ProxyServer Config

⚙️ server-config

MySQL 8 Performance Tuning: InnoDB Buffer Pool, Query Cache, and Connection Pooling

A hands-on guide covering configuration, troubleshooting, and best practices for mysql 8 performance tuning - innodb buffer pool, query cache, and connection pooling.

April 16, 2026

MySQLPerformanceInnoDB

⚙️ server-config

Redis Sentinel High Availability: Automatic Failover Configuration on Ubuntu

A hands-on guide covering configuration, troubleshooting, and best practices for redis sentinel high availability - automatic failover configuration on ubuntu.

April 14, 2026

RedisHigh AvailabilitySentinel

⚙️ server-config

PostgreSQL Performance Tuning on Ubuntu: Configuration Parameters That Matter

A hands-on guide covering configuration, troubleshooting, and best practices for postgresql performance tuning on ubuntu - configuration parameters that matter.

April 11, 2026

PostgreSQLPerformanceUbuntu

⚙️ server-config

HAProxy Sticky Sessions: Session Persistence for Stateful Applications

A hands-on guide covering configuration, troubleshooting, and best practices for haproxy sticky sessions - session persistence for stateful applications.

April 8, 2026

HAProxyLoad BalancerSticky Sessions

⚙️ server-config

Configuring Nginx Rate Limiting: Protect Your Server from Abuse

A hands-on guide covering configuration, troubleshooting, and best practices for configuring nginx rate limiting - protect your server from abuse.

April 5, 2026

NginxRate LimitingServer Config

Ubuntu 24.04 server with Nginx configuration interface showing security settings and reverse proxy setup

⚙️ server-config

Ubuntu 24.04 Nginx Setup: Complete Server Configuration Guide

Learn how to install and configure Nginx on Ubuntu 24.04 with reverse proxy, SSL certificates, and Fail2Ban security. Step-by-step tutorial with production-ready settings.

February 25, 2026

NginxUbuntu 24.04Server Security

HAProxy load balancer distributing traffic to multiple servers

⚙️ server-config

Load Balancing with HAProxy: Production Guide

Configure HAProxy for high availability and load distribution. This guide covers configuration, health checks, SSL termination, and advanced deployment patterns.

February 8, 2026

HAProxyload balancinghigh availability

Nginx reverse proxy architecture diagram showing traffic flow

⚙️ server-config

Nginx Reverse Proxy Configuration: Complete Implementation Guide

Learn how to configure Nginx as a reverse proxy for web applications, APIs, and microservices. This guide covers SSL termination, load balancing, and advanced routing.

February 8, 2026

Nginxreverse proxyload balancing

SSL certificate management terminal showing certificate issuance and renewal status

⚙️ server-config

SSL/TLS Certificate Management: Let's Encrypt and Beyond

Master SSL/TLS certificate management for web servers. Learn Let's Encrypt automation, certificate renewal, multiple domain certificates, and certificate chain configuration for Nginx and Apache.

February 8, 2026

SSLTLSHTTPS

Nginx reverse proxy architecture with terminal aesthetics showing server connections

⚙️ server-config Intermediate

Nginx Reverse Proxy: Complete Setup and Configuration Guide

Learn how to configure Nginx as a reverse proxy server with practical examples, security best practices, and performance optimization techniques for production environments.

February 7, 2026 ⏱️ 25 minutes

Nginxreverse proxyserver configuration