Como hospedar um site com o Caddy no Ubuntu 18.04
O autor selecionou o Free and Open Source Fund para receber uma doação como parte do programa Write for DOnations. O Caddy é um servidor Web projetado em torno da…
How To Configure Apache Content Caching on CentOS 7
Caching is a method of improving server performance by allowing commonly requested content to be temporarily stored in a way that allows for faster access. This speeds up processing and delivery by cutting out some resource intensive operations. By creating effective…
How To Back Up and Restore Your Redis Data on Ubuntu 14.04
Redis is an in-memory, key-value cache and store (a database, that is) that can also be persisted (saved permanently) to disk. In this article, you’ll read how to back up a Redis database on an Ubuntu 14.04 server.
How to Install and Configure RabbitMQ on RHEL 7
How to Install and Configure RabbitMQ on RHEL 7 RabbitMQ is one of the most widely deployed open-source message brokers in the world. It implements the Advanced Message Queuing Protocol (AMQP) and provides reliable message delivery, flexible routing, and support for multiple messaging patterns including work queues, publish/subscribe, and request/reply. Applications use RabbitMQ to decouple […]
OpenBSD 7.6 — ssh — errata 003_ssh — reliability fix — syspatch and remediation
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: OpenBSD 7.6 📖 ~4 min read • Source: OpenBSD 7.6 errata 003_ssh Errata topic: Reliability: ssh (hppa m88k mips64 powerpc powerpc64 sh sparc64) Issued: October 29, 2024 Upstream summary: mlkem768x25519-sha256 byte order bug on big-endian machines. Table of contents Symptom & Impact […]
Gentoo Linux — net-libs/zeromq — vulnerability — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read • Source: Gentoo GLSA GLSA-202009-12 Related CVEs: CVE-2020-15166 Upstream summary: It was discovered that ZeroMQ does not properly handle connecting peers before a handshake is completed. Table of contents Symptom & Impact Environment & Reproduction Root […]
OpenBSD 7.4 — bgpd — errata 017_bgpd — reliability fix — syspatch and remediation
🟡 Medium ⏱ 10–30 min Last verified: 25 May 2026 Affected versions: OpenBSD 7.4 📖 ~4 min read • Source: OpenBSD 7.4 errata 017_bgpd Errata topic: Reliability: bgpd (All architectures) Issued: June 26, 2024 Upstream summary: Repair a withdraw desyncronization problem in bgpd(8). Table of contents Symptom & Impact Environment & Reproduction Root Cause […]
Systemd Journal Grows Unbounded
🟡 Medium ⏱ 5–30 min Last verified: 19 May 2026 Affected versions: Debian 10 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & […]
systemd Service Fails to Start on Boot
🟡 Medium ⏱ 5–30 min Last verified: 19 May 2026 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]
How to Configure DNS Resolution on SLES 12
Introduction This tutorial covers How to Configure DNS Resolution on SLES 12 on SLES 12. SLES 12 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Prerequisites Ensure your SLES 12 system is up to date: zypper refresh […]
