Linux

How to Configure Kibana Dashboards on CentOS Stream 10 — step-by-step CentOS Stream 10 tutorial on Progressive Robot

How to Configure Kibana Dashboards on CentOS Stream 10

Introduction How to Configure Kibana Dashboards on CentOS Stream 10 on CentOS Stream 10 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 […]

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Common Problems 116498

Ubuntu 24.04 LTS GRUB Update Fails After Package Upgrade

🟠 High   ⏱ 5–30 min  Last verified: 9 June 2025 Affected versions: Ubuntu 24.04 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 […]

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Common Problems 116404

Ubuntu 24.04 LTS – apt update fails with Release file not valid yet – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 9 June 2025 Affected versions: Ubuntu 24.04 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 […]

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Alpine Linux 3.19 — libssh — multiple vulnerabilities (8 CVEs) — patch and remediation guide — diagnosis and fix on Alpine Linux 3.19

Alpine Linux 3.19 — libssh — multiple vulnerabilities (8 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Alpine Linux 3.19 / fixed in 0.9.6-r0 📖 ~4 min read  •  Source: Alpine secdb entry — libssh 0.9.6-r0 Related CVEs: CVE-2021-3634 CVE-2020-16135 CVE-2020-1730 CVE-2019-14889 CVE-2018-10933 CVE-2023-6004 CVE-2023-6918 CVE-2023-48795 Upstream summary: Alpine community repository for vv3.19 ships libssh 0.9.6-r0 which addresses CVE-2021-3634. […]

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Amazon Linux 2 — git — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — git — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2-2025-2941 Related CVEs: CVE-2025-27613 CVE-2025-27614 CVE-2025-46835 CVE-2025-48384 CVE-2025-48385 CVE-2019-1348 CVE-2019-1349 CVE-2019-1350  +12 more Upstream summary: When a user clones an untrusted repository and runs Gitk without additional command arguments, any […]

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Debian 11 — djoser — vulnerability — patch and remediation guide — diagnosis and fix on Debian 11

Debian 11 — djoser — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 9 June 2025 Affected versions: Debian 11 (bullseye) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2024-21543 Upstream summary: Versions of the package djoser before 2.3.0 are vulnerable to Authentication Bypass when the authenticate() function fails. This is because the system falls back to […]

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Gentoo Linux — app-text/calibre — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — app-text/calibre — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202409-04 Related CVEs: CVE-2023-46303 CVE-2024-6781 CVE-2024-6782 CVE-2024-7008 CVE-2024-7009 Upstream summary: Multiple vulnerabilities have been discovered in calibre. Please review the CVE identifiers referenced below for details. Table of contents Symptom & Impact […]

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SLES 12 — socat — multiple vulnerabilities (4 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — socat — multiple vulnerabilities (4 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 9 June 2025 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2025:0726-1 (see also SUSE bugzilla) Related CVEs: CVE-2015-1379 CVE-2024-54661 CVE-2013-3571 CVE-2014-0019 Upstream summary: The signal handler implementations in socat before 1.7.3.0 and 2.0.0-b8 allow remote attackers to cause a denial of service […]

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Red Hat Enterprise Linux 7 — openssl — vulnerability — patch and remediation guide — diagnosis and fix on Red Hat Enterprise Linux 7

Red Hat Enterprise Linux 7 — openssl — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Red Hat Enterprise Linux 7 📖 ~4 min read  •  Source: Red Hat advisory RHSA RHSA-2026:1720 Related CVEs: CVE-2025-9230 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative […]

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How to Manage Docker Images and Containers on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Kubernetes with kubeadm on Ubuntu 24.04

kubeadm is the official tool for bootstrapping a production-grade Kubernetes cluster. This guide installs Kubernetes 1.30 on Ubuntu 24.04 LTS using kubeadm on a single control-plane node with worker nodes. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS servers (1 control-plane + at least 1 worker) Minimum 2 vCPUs and 2 GB […]

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