Systemd Services

Oracle Linux 8 — rhnreg_ks Register Command Might Fail If python3-rhn-virtualization-host Package Is Installed — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — rhnreg_ks Register Command Might Fail If python3-rhn-virtualization-host Package Is Installed

🟠 High   ⏱ 5–30 min  Last verified: 21 January 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug 30366521 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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How to Configure IBM MQ Clustering on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Configure IBM MQ Clustering on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure ibm mq clustering on ibm aix 7.1 on […]

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openSUSE Tumbleweed — openvswitch — vulnerability — patch and remediation guide — diagnosis and fix on openSUSE Tumbleweed

openSUSE Tumbleweed — openvswitch — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: openSUSE Tumbleweed 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2022:3096-1 (see also SUSE bugzilla) Related CVEs: CVE-2021-36980 Upstream summary: Open vSwitch (aka openvswitch) 2.11.0 through 2.15.0 has a use-after-free in decode_NXAST_RAW_ENCAP (called from ofpact_decode and ofpacts_decode) during the decoding of a […]

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How to Install MongoDB on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install MongoDB on Oracle Linux 8

Introduction This tutorial demonstrates how to Install MongoDB on Oracle Linux 8 on Oracle Linux 8. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 8 system with the default AppStream […]

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Ubuntu 18.04 — linux-gke-4.15 — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — linux-gke-4.15 — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 21 January 2021 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4749-1 Related CVEs: CVE-2020-25669 CVE-2020-27815 CVE-2020-27830 CVE-2020-28941 CVE-2020-29374 CVE-2020-29568 CVE-2020-29569 CVE-2020-29660  +12 more Upstream summary: Bodong Zhao discovered a use-after-free in the Sun keyboard driver implementation in the Linux kernel. […]

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SLES 15 — libbrotlidec1 — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libbrotlidec1 — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 21 January 2021 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-CU-2021:611-1 (see also SUSE bugzilla) Related CVEs: CVE-2020-8927 Upstream summary: A buffer overflow exists in the Brotli library versions prior to 1.0.8 where an attacker controlling the input length of a "one-shot" […]

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How to Install Elasticsearch on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Install Elasticsearch on FreeBSD 12

Introduction Deploying install elasticsearch on freebsd 12 on a FreeBSD 12 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard base + […]

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Oracle Linux 8 — java-1.8.0-openjdk — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — java-1.8.0-openjdk — vulnerability — patch and remediation guide (ELSA-2019-1816)

🟡 Medium   ⏱ 10–30 min  Last verified: 21 January 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2019-1816 Related CVEs: CVE-2019-2786 CVE-2019-2842 CVE-2019-2745 CVE-2019-2769 CVE-2019-2816 CVE-2019-2762 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – […]

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