Linux

Debian 10 — zlib — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — zlib — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 5 August 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2018-25032 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How To Install and Secure Redis on CentOS — step-by-step Linux tutorial on Progressive Robot

How To Install and Secure Redis on CentOS

This tutorial provides instructions for installing Redis on a CentOS 7 server and using its built-in security features, in coordination with some other security configurations, to keep it from being accessed by unauthorized users.

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Common Problems 121649

Debian 9 Hostname Resolution Warning sudo unable to resolve host

🟢 Low   ⏱ 5–30 min  Last verified: 4 August 2020 Affected versions: Debian 9 📖 ~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 & […]

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Common Problems 118427

Ubuntu 16.04 LTS /var partition full causing service failures

🟡 Medium   ⏱ 5–30 min  Last verified: 4 August 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 […]

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Common Problems 117590

Ubuntu 20.04 LTS Port Conflict Prevents Daemon Binding

🟡 Medium   ⏱ 5–30 min  Last verified: 4 August 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 […]

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What's New in Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

What’s New in Ubuntu 16.04

The Ubuntu operating system’s most recent Long Term Support version, version 16.04 (Xenial Xerus), was released on April 21, 2016. This guide is intended as a brief overview of new features and significant changes to the system as a whole, since 14.04 LTS, from the perspective of server system administration. It draws on the official Xenial Xerus release notes, along with a variety of other sources.

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Oracle Linux 8 — kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel — vulnerability — patch and remediation guide (ELSA-2019-2411)

🟠 High   ⏱ 15–60 min  Last verified: 4 August 2020 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-2411 Related CVEs: CVE-2019-1125 CVE-2019-13272 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

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How To Install Elasticsearch, Logstash, and Kibana (Elastic Stack) on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Install Elasticsearch, Logstash, and Kibana (Elastic Stack) on Ubuntu 18.04

In this tutorial, we will go over the installation of the Elastic Stack on an Ubuntu 18.04 server. You will learn how to install all the components of the Elastic Stack (including Filebeat, a Beat used for forwarding and centralizing logs and files) and configure them to gather and visualize system logs. We will install all components on a single server, which we will refer to as our Elastic Stack Server.

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How to Install and Configure Squid Proxy on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Install and Configure Squid Proxy on Debian 10

Introduction Debian 10 Buster is built around the ethos of stability and free software. Setting up install and configure squid proxy 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 […]

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