March 2021 - Page 28 of 63

How To Monitor Server Health with Checkmk on Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

How To Monitor Server Health with Checkmk on Ubuntu 20.04

Checkmk is a monitoring solution that is both robust and simpler to install than many of its competitors. It is a self-contained software bundle that combines Nagios (a popular and open-source alerting service) with add-ons for gathering, monitoring, and graphing data. It also comes with Checkmk’s web interface — a comprehensive tool that addresses many of Nagios’s shortcomings. In this guide we will set up Checkmk and monitor two separate hosts: an Ubuntu 18.04 server and a CentOS 7 server.

Read more
openSUSE Tumbleweed — python36-Babel — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python36-Babel — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2021:1553-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-42771 Upstream summary: Babel.Locale in Babel before 2.9.1 allows attackers to load arbitrary locale .dat files (containing serialized Python objects) via directory traversal, leading to […]

Read more
Ubuntu 20.04 — pyyaml — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — pyyaml — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 18 March 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4940-1 Related CVEs: CVE-2020-14343 Upstream summary: It was discovered that PyYAML incorrectly handled untrusted YAML files with the FullLoader loader. A remote attacker could possibly use this issue to execute […]

Read more
How to Configure rsyslog on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure rsyslog on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up configure rsyslog on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully and the resulting […]

Read more
How To Install Drupal on a Virtual Server Running CentOS 6 — step-by-step Linux tutorial on Progressive Robot

How To Install Drupal on a Virtual Server Running CentOS 6

This tutorials covers a basic drupal installation on a centos server. Drupal is a free and open source content management that uses a PHP and a backend database, such as MySQL. It was created in 2001 and is currently the 3rd most popular content management site online. It now has over 17,000 addons to customize its functionality.

Read more
Gentoo Linux — app-backup/tsm — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — app-backup/tsm — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202209-02 Related CVEs: CVE-2021-3711 CVE-2021-3712 CVE-2021-4104 CVE-2021-29672 CVE-2021-39048 Upstream summary: Multiple vulnerabilities have been discovered in IBM Spectrum Protect. Please review the CVE identifiers referenced below for details. Table of contents Symptom […]

Read more
Oracle Linux 8 — glibc — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — glibc — vulnerability — patch and remediation guide (ELSA-2021-9280)

🟠 High   ⏱ 15–60 min  Last verified: 18 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-9280 Related CVEs: CVE-2021-3326 CVE-2019-25013 CVE-2020-27618 CVE-2016-10228 CVE-2019-9169 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

Read more
CHAT