Troubleshooting

How to Configure pgBouncer on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure pgBouncer on Oracle Linux 8

Introduction How to Configure pgBouncer on Oracle Linux 8 on Oracle Linux 8 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is reproducible […]

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How to Use IBM Tivoli Access Manager on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use IBM Tivoli Access Manager on IBM AIX 7.2

Introduction IBM AIX 7.2 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 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use ibm tivoli access manager on ibm aix 7.2 […]

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Ubuntu 14.04 — libnet-cidr-perl — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — libnet-cidr-perl — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 17 March 2021 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-8110-1 Related CVEs: CVE-2021-4456 Upstream summary: Dave Rolsky discovered that Net-CIDR did not properly sanitize IP addresses. An attacker could possibly use this to bypass IP-based restrictions. Table of contents […]

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

Oracle Linux 8 — libfastjson — vulnerability — patch and remediation guide (ELSA-2023-6976)

🟡 Medium   ⏱ 10–30 min  Last verified: 17 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2023-6976 Related CVEs: CVE-2020-12762 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 Set Up ArgoCD for GitOps on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up ArgoCD for GitOps on FreeBSD 12

Introduction How to Set Up ArgoCD for GitOps on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for […]

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

Oracle Linux 8 — systemd — vulnerability — patch and remediation guide (ELSA-2021-2717)

🟠 High   ⏱ 15–60 min  Last verified: 17 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-2717 Related CVEs: CVE-2021-33910 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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Alpine Linux edge — bluez — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — bluez — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 5.54-r0 📖 ~4 min read  •  Source: Alpine secdb entry — bluez 5.54-r0 Related CVEs: CVE-2020-0556 Upstream summary: Alpine main repository for vedge ships bluez 5.54-r0 which addresses CVE-2020-0556. Table of contents Symptom & Impact Environment […]

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How to Set Up a LAMP Stack on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up a LAMP Stack on FreeBSD 12

Introduction How to Set Up a LAMP Stack on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for […]

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Oracle Linux 8 — ( aarch64 ) Some GUI Elements Aren't Displayed During Installation and Boot Using VGA Output — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — ( aarch64 ) Some GUI Elements Aren’t Displayed During Installation and Boot Using VGA Output (VG-35270637-35034465)

🟠 High   ⏱ 5–30 min  Last verified: 16 March 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug 35270637_35034465 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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