Troubleshooting

Common Problems 114939

RHEL 8 – Invalid fstab Entry Triggers Emergency Mode

🟡 Medium   ⏱ 5–30 min  Last verified: 8 December 2019 📖 ~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 & Cross-Refs References & Further […]

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How to Install Ansible and Manage Windows Server 2012 R2 with Ansible — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Install Ansible and Manage Windows Server 2012 R2 with Ansible

How to Install Ansible and Manage Windows Server 2012 R2 with Ansible Ansible is an agentless configuration management and automation platform that manages Windows hosts via WinRM (Windows Remote Management) rather than SSH. This makes it an excellent choice for automating Windows Server 2012 R2 deployments, as no software needs to be installed on the […]

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Ubuntu 14.04 — postgresql-common — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 14.04

Ubuntu 14.04 — postgresql-common — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 December 2019 Affected versions: Ubuntu 14.04 (trusty) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4194-2 Related CVEs: CVE-2019-3466 CVE-2016-1255 CVE-2017-8806 Upstream summary: USN-4194-1 fixed a vulnerability in postgresql-common. This update provides the corresponding update for Ubuntu 14.04 ESM. Original advisory details: Rich Mirch discovered […]

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How to Register a GitHub Actions Self-Hosted Runner on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Register a GitHub Actions Self-Hosted Runner on RHEL 8

GitHub Actions self-hosted runners allow you to execute CI/CD workflows on your own hardware, giving you full control over the operating system, installed tooling, network access, and resource allocation. On RHEL 8 this is especially valuable for pipelines that must access internal systems, use licensed software, or run workloads that exceed GitHub’s hosted-runner resource limits. […]

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SLES 15 — libmspack0 — multiple vulnerabilities (7 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libmspack0 — multiple vulnerabilities (7 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 December 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2014:0886-1 (see also SUSE bugzilla) Related CVEs: CVE-2010-2800 CVE-2010-2801 CVE-2014-9556 CVE-2018-18584 CVE-2018-18585 CVE-2018-18586 CVE-2019-1010305 Upstream summary: The MS-ZIP decompressor in cabextract before 1.3 allows remote attackers to cause a denial of service […]

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SLES 15 — python2-pyxdg — vulnerability — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — python2-pyxdg — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 8 December 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2022:2997-1 (see also SUSE bugzilla) Related CVEs: CVE-2019-12761 Upstream summary: A code injection issue was discovered in PyXDG before 0.26 via crafted Python code in a Category element of a Menu XML […]

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How to Install k3s Lightweight Kubernetes on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install k3s Lightweight Kubernetes on RHEL 8

k3s is a lightweight, CNCF-certified Kubernetes distribution built for resource-constrained environments, edge deployments, and developer laptops, yet it is fully production-capable. It ships as a single binary under 100 MB, bundles its own SQLite datastore, and eliminates the need for a separate etcd cluster on small installations. RHEL 8 is an excellent host for k3s […]

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SLES 15 — libXi6 — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — libXi6 — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 8 December 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2013:1103-1 (see also SUSE bugzilla) Related CVEs: CVE-2013-1984 CVE-2013-1995 CVE-2013-1998 Upstream summary: Multiple integer overflows in X.org libXi 1.7.1 and earlier allow X servers to trigger allocation of insufficient memory and a […]

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Oracle Linux 8 — virt:ol — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — virt:ol — vulnerability — patch and remediation guide (ELSA-2020-0279)

🟡 Medium   ⏱ 10–30 min  Last verified: 8 December 2019 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-0279 Related CVEs: CVE-2019-11135 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 Install Redis on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Redis on RHEL 8

Redis is an in-memory data structure store used as a database, cache, and message broker, capable of delivering sub-millisecond response times for millions of operations per second. On RHEL 8, Redis is available through the AppStream module system, giving you a straightforward installation path without third-party repositories. This guide covers installing Redis 6 via AppStream […]

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