Systemd Services

How to Configure System Logging with rsyslog on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure System Logging with rsyslog on Oracle Linux 8

Introduction Setting up configure system logging with rsyslog on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure System Logging with rsyslog on Oracle Linux 8, with all the commands you need, the SELinux and firewalld […]

Read more
Ubuntu 14.04 — lz4 — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — lz4 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 27 January 2021 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4968-2 Related CVEs: CVE-2021-3520 Upstream summary: USN-4968-1 fixed a vulnerability in LZ4. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. Original advisory details: It […]

Read more
Oracle Linux 8 — pacemaker — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — pacemaker — vulnerability — patch and remediation guide (ELSA-2020-5487)

🟡 Medium   ⏱ 10–30 min  Last verified: 27 January 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-5487 Related CVEs: CVE-2020-25654 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
Oracle Linux 8 — python-pillow — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — python-pillow — vulnerability — patch and remediation guide (ELSA-2020-3185)

🟠 High   ⏱ 15–60 min  Last verified: 27 January 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-3185 Related CVEs: CVE-2020-5313 CVE-2020-11538 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & […]

Read more
Oracle Linux 8 — thunderbird — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — thunderbird — vulnerability — patch and remediation guide (ELSA-2020-3341)

🟠 High   ⏱ 15–60 min  Last verified: 27 January 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-3341 Related CVEs: CVE-2020-15652 CVE-2020-15659 CVE-2020-6463 CVE-2020-6514 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches […]

Read more
Oracle Linux 8 — Running nohup prevents ssh command from executing — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Running nohup prevents ssh command from executing

🟠 High   ⏱ 5–30 min  Last verified: 26 January 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: Oracle Bug 30287091 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 […]

Read more
Common Problems 117521

Ubuntu 20.04 LTS – systemd service fails with status=203/EXEC – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 26 January 2021 Affected versions: Ubuntu 20.04 LTS 📖 ~1 min read 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 Prevention & Hardening Related Errors […]

Read more
Alpine Linux edge — zstd — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — zstd — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 1.4.9-r0 📖 ~4 min read  •  Source: Alpine secdb entry — zstd 1.4.9-r0 Related CVEs: CVE-2021-24032 CVE-2021-24031 CVE-2019-11922 Upstream summary: Alpine main repository for vedge ships zstd 1.4.9-r0 which addresses CVE-2021-24032. Table of contents Symptom & […]

Read more
How to Set Up NFS on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up NFS on Oracle Linux 8

Introduction This tutorial demonstrates how to Set Up NFS 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 […]

Read more
CHAT