September 2021 - Page 31 of 66

How to Install MongoDB on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install MongoDB on Debian 9 (DEBIAN-9-2)

Introduction This guide explains how to Install MongoDB on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the standard repositories […]

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Debian 11 — mustache.js — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — mustache.js — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-8861 CVE-2015-8862 Upstream summary: The handlebars package before 4.0.0 for Node.js allows remote attackers to conduct cross-site scripting (XSS) attacks by leveraging a template with an attribute that […]

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Python String encode() decode() — step-by-step Python tutorial on Progressive Robot

Python String encode() decode()

URL: https://www.progressiverobot.com/python-string-encode-decode/ Python String encode() Python string encode() function is used to encode the string using the provided encoding. This function returns the [bytes](/community/tutorials/python-bytes) object. If we don't provide encoding, "utf-8" encoding is used as default. Python Bytes decode() Python bytes decode() function is used to convert bytes to string object. Both these functions allow […]

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Debian 11 — libxml-atom-perl — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — libxml-atom-perl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 25 May 2026 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2012-1102 Upstream summary: It was discovered that the XML::Atom Perl module before version 0.39 did not disable external entities when parsing XML from potentially untrusted sources. This may […]

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SLES 15 — apache-commons-compress — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — apache-commons-compress — 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-2021:2612-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-35515 CVE-2021-35516 CVE-2021-35517 CVE-2021-36090 CVE-2019-12402 Upstream summary: When reading a specially crafted 7Z archive, the construction of the list of codecs that decompress an entry […]

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

Oracle Linux 8 — grafana — vulnerability — patch and remediation guide (ELSA-2022-0001)

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-0001 Related CVEs: CVE-2021-44716 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 Monitor MySQL with Percona Monitoring and Management on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Monitor MySQL with Percona Monitoring and Management on RHEL 7

How to Monitor MySQL with Percona Monitoring and Management on RHEL 7 Percona Monitoring and Management (PMM) is a free, open-source platform for monitoring MySQL, MariaDB, PostgreSQL, and MongoDB. It combines Grafana dashboards, Prometheus metrics collection, and Query Analytics (QAN) into a single integrated UI. Unlike generic monitoring tools, PMM understands database internals and surfaces […]

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How To Build a Data Processing Pipeline Using Luigi in Python on Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

How To Build a Data Processing Pipeline Using Luigi in Python on Ubuntu 20.04

Luigi is a Python package that manages long-running _batch processing_, which is the automated running of data processing jobs on batches of items. Luigi allows you to define a data processing job as a set of dependent tasks. In this tutorial you will build a data processing pipeline to analyze the most common words from the most popular books on Project Gutenburg. You will build a pipeline using Luigi. You will use Luigi tasks, targets, dependencies, and parameters to build your pipeline.

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AlmaLinux 8 — libgovirt — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — libgovirt — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALBA-2021:1895 Upstream summary: For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section. Table of contents Symptom & Impact Environment & Reproduction Root Cause […]

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