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Common Problems 120096

Debian 12 High I/O Wait Caused by Swap Thrashing

🟠 High   ⏱ 5–30 min  Last verified: 8 September 2024 Affected versions: Debian 12 📖 ~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 116636

Ubuntu 24.04 LTS – AppArmor denies application access unexpectedly – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 8 September 2024 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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How to Configure auditd on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Configure auditd on FreeBSD 14

Introduction Deploying configure auditd on freebsd 14 on a FreeBSD 14 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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Common Problems 116570

Ubuntu 24.04 LTS – DKMS build fails after kernel update – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 8 September 2024 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 116514

Ubuntu 24.04 LTS – DKMS module build fails after kernel update

🔴 Critical   ⏱ 5–30 min  Last verified: 8 September 2024 Affected versions: Ubuntu 24.04 LTS Ubuntu 24.04 Ubuntu 24.04.1 📖 ~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 […]

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How to Set Up Software RAID with mdadm on Ubuntu 24.04 — step-by-step Linux tutorial on Progressive Robot

How to Install Zabbix 7 on Ubuntu 24.04

Zabbix 7 is an enterprise-grade open-source monitoring solution for networks, servers, and cloud services. This guide installs Zabbix Server 7.0 LTS on Ubuntu 24.04 LTS with MySQL and Nginx. Tested and valid on: Ubuntu 24.04 LTS Prerequisites Ubuntu 24.04 LTS server MySQL 8.0 installed Nginx and PHP 8.3-FPM installed A user with sudo privileges Step […]

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How to Set Up a Kubernetes Dashboard on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Set Up a Kubernetes Dashboard on FreeBSD 14

Introduction How to Set Up a Kubernetes Dashboard on FreeBSD 14 is a core administration task for any FreeBSD 14 server operator. FreeBSD 14 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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SLES 12 — pam — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on SLES 12

SLES 12 — pam — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 7 September 2024 Affected versions: SLES 12 📖 ~4 min read  •  Source: SUSE advisory RHSA-2024:10379 (see also SUSE bugzilla) Related CVEs: CVE-2024-10041 CVE-2024-22365 CVE-2010-3430 CVE-2010-3431 CVE-2010-3853 CVE-2011-3148 CVE-2014-2583 CVE-2015-3238  +1 more Upstream summary: A vulnerability was found in PAM. The secret information is stored in memory, […]

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Debian 12 — pykerberos — vulnerability — patch and remediation guide — diagnosis and fix on Debian 12

Debian 12 — pykerberos — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 4 September 2024 Affected versions: Debian 12 (bookworm) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2015-3206 Upstream summary: The checkPassword function in python-kerberos does not authenticate the KDC it attempts to communicate with, which allows remote attackers to cause a denial of service […]

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How to Set Up a LEMP Stack on FreeBSD 14 — step-by-step FreeBSD 14 tutorial on Progressive Robot

How to Set Up a LEMP Stack on FreeBSD 14

Introduction How to Set Up a LEMP Stack on FreeBSD 14 is a core administration task for any FreeBSD 14 server operator. FreeBSD 14 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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