September 2020 - Page 50 of 66

How to Set Up Nginx as a Reverse Proxy on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Nginx as a Reverse Proxy on Debian 9

Introduction Deploying set up nginx as a reverse proxy on debian 9 on a Debian 9 Stretch machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. […]

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SLES 15 — libEMF1 — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libEMF1 — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2020:1621-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-11865 CVE-2020-11866 CVE-2020-13999 CVE-2020-11863 CVE-2020-11864 Upstream summary: libEMF (aka ECMA-234 Metafile Library) through 1.0.11 allows out-of-bounds memory access. Table of contents Symptom & Impact Environment […]

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How To Perform CRUD Operations in MongoDB — step-by-step Databases tutorial on Progressive Robot

How To Perform CRUD Operations in MongoDB

Data management involves four fundamental types of database operations: operations that allow you to create, read, update, and delete data. Collectively, these operations are known as CRUD operations. This tutorial outlines how to create new MongoDB documents and later retrieve them to read their data. It also explains how to update the data within documents, as well as how to delete documents when they are no longer needed.

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How To Monitor Server Health with Checkmk 2.0 on Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

How To Monitor Server Health with Checkmk 2.0 on Ubuntu 20.04

Checkmk is a monitoring solution that is both robust and simple to install. It is a self-contained software bundle that combines Nagios with add-ons for gathering, monitoring, and graphing data. In this guide, you will set up Checkmk on an Ubuntu 20.04 server and monitor two separate hosts.

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How to Configure Multipath I/O on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Multipath I/O on Debian 10

Introduction How to Configure Multipath I/O on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 10. This […]

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How To Install CouchDB from Source on a CentOS 6 x64 VPS — step-by-step Linux tutorial on Progressive Robot

How To Install CouchDB from Source on a CentOS 6 x64 VPS

CouchDB is a NoSQL database developed by The Apache Software Foundation that “uses JSON for documents, JavaScript for MapReduce queries, and regular HTTP for an API”. Often called “a database that completely embraces the web”, it’s used by many startups as well as corporations due to its flexibility and scalability.

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Oracle Linux 8 — pki-core:10.6 and pki-deps:10.6 — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — pki-core:10.6 and pki-deps:10.6 — vulnerability — patch and remediation guide (ELSA-2024-3061)

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2024-3061 Related CVEs: CVE-2020-36518 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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