O Kubernetes é um sistema de orquestração de container que pode gerenciar aplicações containerizadas em um cluster de nodes de servidores. A manutenção da conectividade de rede entre todos os containers em um cluster requer algumas técnicas avançadas de rede. Neste artigo vamos…
🟡 Medium ⏱ 5–30 min Last verified: 3 February 2020 📖 ~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 […]
Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up set up spinnaker cd platform on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step carefully […]
Centralised log management is essential for maintaining visibility across distributed infrastructure. Graylog is a powerful open-source log management platform that ingests, indexes, and visualises log data from multiple sources in real time. In this tutorial you will install Graylog on a single RHEL 8 server, configure it to receive syslog messages over UDP and TCP, […]
Systemd is the default init system on Red Hat Enterprise Linux 8, responsible for managing services, sockets, timers, and other units from boot through shutdown. Understanding how to control systemd services is essential for anyone administering RHEL 8 servers in production. This tutorial covers the core systemctl commands, how to inspect logs with journalctl, and […]
🟡 Medium ⏱ 5–30 min Last verified: 2 February 2020 📖 ~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 […]
Introduction This guide explains how to Configure Disk Quotas on FreeBSD 12 on FreeBSD 12. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained privilege […]
🟡 Medium ⏱ 5–30 min Last verified: 2 February 2020 Affected versions: RHEL 7 📖 ~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 & […]
Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up set up nginx with php-fpm on debian 10 on Buster leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Buster freeze. Follow each step carefully […]
Introduction FreeBSD 12 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up set up two-factor authentication for ssh on freebsd 12 on FreeBSD 12 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from […]
