Установка и настройка Postfix в Ubuntu 20.04
Предыдущая версия данного обучающего руководства была написана Джастином Эллингвудом Postfix — популярный почтовый агент [*(MTA) с…
Oracle Linux 8 — kernel — vulnerability — patch and remediation guide (ELSA-2019-3832)
🟠 High ⏱ 15–60 min Last verified: 15 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2019-3832 Related CVEs: CVE-2018-12207 CVE-2019-11135 CVE-2019-0154 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]
How To Configure a Galera Cluster with MariaDB on Ubuntu 18.04 Servers
In this guide, you will configure an active-active MariaDB Galera cluster. For demonstration purposes, you will configure and test three Ubuntu 18.04 Droplets that will act as nodes in the cluster. MariaDB is an open source relational database system that is fully compatible with the popular MySQL RDBMS system. Galera is a database clustering solution that enables you to set up multi-master clusters using synchronous replication.
Oracle Linux 8 — qt5-qtbase — security and stability fixes — required update (ELSA-2019-3390)
🟡 Medium ⏱ 10–30 min Last verified: 14 December 2020 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2019-3390 Related CVEs: CVE-2018-15518 CVE-2018-19870 CVE-2018-19873 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]
Ubuntu 18.04 High CPU from Runaway systemd Service
🟡 Medium ⏱ 5–30 min Last verified: 14 December 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 […]
How To View System Users in Linux on Ubuntu
This guide will discuss how to view system users. It will cover how to find out who is logged into your server and where they are coming from.
Ubuntu 20.04でSSHの鍵をセットアップする方法
本ガイドでは、Ubuntu 20.04インストール用のSSHの鍵をセットアップすることに焦点を合わせます。SSHの鍵は、サーバーに簡単かつ安全にログインすることができるため、すべてのユーザーに推奨されています。
Ubuntu 20.04 — fossil — vulnerability — patch and remediation guide
🟢 Low ⏱ 5–15 min Last verified: 14 December 2020 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read • Source: Ubuntu Security Notice USN-6770-1 Related CVEs: https://launchpad.net/bugs/2064509 Upstream summary: USN-6729-1 fixed vulnerabilities in Apache HTTP Server. The update lead to the discovery of a regression in Fossil with regards to the handling of […]
How To Install and Use Ack, a Grep Replacement for Developers, on Ubuntu 14.04
Searching for files and searching through files are two activities that you probably do often when developing an application. Ack is a search tool that is optimized for working on source files. It can intelligently handle searches very fast and is a suitable replacement for grep in most situations. In this guide, we’ll show you how to install and use ack on an Ubuntu 14.04 server.
The dpkg Command in Linux – A Beginners Reference
Let's discuss the dpkg command in Linux in this article. Packages help in delivering or installing any application on a Linux system. Essentially, packages are compressed archive of the files and dependencies required to install a program or service. These packages are used when you want to install a new program or service on their […]
