Kernel Drivers

How to Limit Container Resources with cgroups v1 on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Limit Container Resources with cgroups v1 on Debian 11

  • July 25, 2022
  • Linux
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Introduction Deploying limit container resources with cgroups v1 on debian 11 on a Debian 11 Bullseye machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites […]

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How to Configure XFS File System on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure XFS File System on Debian 11

  • July 24, 2022
  • Linux
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Introduction This guide explains how to Configure XFS File System on Debian 11 on Debian 11 Bullseye. Debian Bullseye uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 11 install with the […]

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Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — Unbreakable Enterprise kernel — vulnerability — patch and remediation guide (ELSA-2022-9709)

  • July 23, 2022
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 23 July 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-9709 Related CVEs: CVE-2022-21505 CVE-2022-23816 CVE-2022-2153 CVE-2022-2588 CVE-2022-29901 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 Configure Docker Resource Limits on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure Docker Resource Limits on Debian 11

  • July 23, 2022
  • Linux
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Introduction Deploying configure docker resource limits on debian 11 on a Debian 11 Bullseye machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites You will […]

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Common Problems 117020

Ubuntu 22.04 LTS APT Lock Contention Blocks Automated Patch Jobs

  • July 22, 2022
  • Linux
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🟡 Medium   ⏱ 5–30 min  Last verified: 22 July 2022 📖 ~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 Configure Nginx as a TCP/UDP Load Balancer on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure Nginx as a TCP/UDP Load Balancer on Debian 11 (DEBIAN-11-2)

  • July 22, 2022
  • Linux
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Introduction Deploying configure nginx as a tcp/udp load balancer on debian 11 on a Debian 11 Bullseye machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. […]

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How to Install Helm Package Manager for Kubernetes on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install Helm Package Manager for Kubernetes on Debian 11

  • July 21, 2022
  • Linux
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Introduction This guide explains how to Install Helm Package Manager for Kubernetes on Debian 11 on Debian 11 Bullseye. Debian Bullseye uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 11 install […]

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Amazon Linux 2 — kernel-livepatch-4.14.299-223.520 — vulnerability — patch and remediation guide — diagnosis and fix on Amazon Linux 2

Amazon Linux 2 — kernel-livepatch-4.14.299-223.520 — vulnerability — patch and remediation guide

  • July 19, 2022
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Amazon Linux 2 📖 ~4 min read  •  Source: Amazon Linux advisory ALAS2LIVEPATCH-2023-100 Related CVEs: CVE-2022-3524 Upstream summary: A vulnerability was found in Linux Kernel. It has been declared as problematic. Affected by this vulnerability is the function ipv6_renew_options of the component […]

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Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — kernel security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2021-3057)

  • July 18, 2022
  • Linux
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🟠 High   ⏱ 15–60 min  Last verified: 18 July 2022 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2021-3057 Related CVEs: CVE-2021-22543 CVE-2021-22555 CVE-2021-3609 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]

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How to Configure Virtual Memory with rmss on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Configure Virtual Memory with rmss on IBM AIX 7.3

  • July 18, 2022
  • IBM AIX
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Introduction IBM AIX 7.3 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 7.3 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to configure virtual memory with rmss on IBM AIX 7.3 […]

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