September 2021 - Page 27 of 66

What Is Immutable Infrastructure? — step-by-step Devops tutorial on Progressive Robot

What Is Immutable Infrastructure?

Immutable infrastructure is an infrastructure paradigm in which servers are never modified after they’re deployed. This article explains the conceptual and practical differences between mutable and immutable infrastructure, describes the advantages of using an immutable infrastructure and contextualizes the complications, and gives a high-level overview of the implementation details and necessary components for an immutable infrastructure.

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SLES 15 — npm8 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — npm8 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🔴 Critical   ⏱ 15–90 min  Last verified: 25 May 2026 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2021:2790-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-22930 CVE-2020-8174 CVE-2020-7774 CVE-2021-27290 CVE-2021-32803 CVE-2021-32804 CVE-2019-15604 CVE-2019-15605  +12 more Upstream summary: Node.js before 16.6.0, 14.17.4, and 12.22.4 is vulnerable to a use after free […]

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How to Build Grafana Dashboards for FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Build Grafana Dashboards for FreeBSD 13

Introduction This guide explains how to Build Grafana Dashboards for FreeBSD 13 on FreeBSD 13. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained privilege […]

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How To Set Up Replication in MySQL — step-by-step Databases tutorial on Progressive Robot

How To Set Up Replication in MySQL

MySQL replication is a process that allows you to easily maintain multiple copies of a MySQL data by having them copied automatically from a master to a slave database. This can helpful for many reasons including facilating a backup for the data,a way to analyze it without using the main database, or simply as a means to scale out.

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

AlmaLinux 8 — libstoragemgmt — 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-2022:2035 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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AlmaLinux 8 — qt5-qtx11extras — vulnerability — patch and remediation guide — diagnosis and fix on AlmaLinux 8

AlmaLinux 8 — qt5-qtx11extras — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: AlmaLinux 8 📖 ~4 min read  •  Source: AlmaLinux ALSA ALSA-2021:4172 Related CVEs: CVE-2021-3481 Upstream summary: Qt is a software toolkit for developing applications. The following packages have been upgraded to a later upstream version: adwaita-qt (1.2.1), python-qt5 (5.15.0), qgnomeplatform (0.7.1), qt5 […]

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Oracle Linux 8 — Kernel Issues — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Kernel Issues (OL8-ISSUES-KERNEL)

🟠 High   ⏱ 5–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug OLRNT-ol8-issues-kernel 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 […]

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openSUSE Tumbleweed — python36-httplib2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — python36-httplib2 — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory openSUSE-SU-2021:0772-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-11078 CVE-2021-21240 Upstream summary: In httplib2 before version 0.18.0, an attacker controlling unescaped part of uri for `httplib2.Http.request()` could change request headers and body, send […]

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openSUSE Tumbleweed — privoxy — multiple vulnerabilities (19 CVEs) — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — privoxy — multiple vulnerabilities (19 CVEs) — 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-2021:1646-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-44540 CVE-2021-44541 CVE-2021-44542 CVE-2021-20216 CVE-2021-20217 CVE-2021-20272 CVE-2021-20273 CVE-2021-20274  +11 more Upstream summary: A vulnerability was found in Privoxy which was fixed in get_url_spec_param() by freeing […]

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How to Configure GELI Disk Encryption on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure GELI Disk Encryption on FreeBSD 13

Introduction FreeBSD 13 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up configure geli disk encryption on freebsd 13 on FreeBSD 13 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any Linux […]

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