Networking

How to Install Minio as S3-Compatible Storage on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install Minio as S3-Compatible Storage on Debian 11

Introduction Debian 11 Bullseye is built around the ethos of stability and free software. Setting up install minio as s3-compatible storage on debian 11 on Bullseye leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Bullseye freeze. Follow each step carefully […]

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How to Set Up ProxySQL for MySQL Load Balancing on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up ProxySQL for MySQL Load Balancing on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up set up proxysql for mysql load balancing on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each […]

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How to Install and Configure InfluxDB 2 on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install and Configure InfluxDB 2 on Debian 11

Introduction How to Install and Configure InfluxDB 2 on Debian 11 is a fundamental operation for any administrator maintaining a Debian 11 Bullseye server. Debian 11 Bullseye ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian […]

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Common Problems 120622

Debian 11 – unattended-upgrades Leaves Pending Reboot Drift – Controlled Patch Flow

🟡 Medium   ⏱ 5–30 min  Last verified: 8 August 2022 Affected versions: Debian 11 📖 ~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 114509

High CPU Usage From Kworker Or System Daemons

🟡 Medium   ⏱ 5–30 min  Last verified: 8 August 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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Common Problems 120618

Debian 11 – high CPU and disk I/O from systemd-journald

🟡 Medium   ⏱ 5–30 min  Last verified: 7 August 2022 Affected versions: Debian 11 📖 ~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 Resource Limits in Kubernetes on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Configure Resource Limits in Kubernetes on SLES 15

Introduction This tutorial covers How to Configure Resource Limits in Kubernetes on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Step 1 — Disable Swap swapoff -a sed -i ‘/ […]

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How to Configure ACLs on Ext4 File Systems on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure ACLs on Ext4 File Systems on Debian 11

Introduction Deploying configure acls on ext4 file systems 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 OpenDKIM with Postfix on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure OpenDKIM with Postfix on Debian 11

Introduction Deploying configure opendkim with postfix 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 116987

Ubuntu 22.04 UFW Rules Break Docker Container Connectivity

🟡 Medium   ⏱ 5–30 min  Last verified: 6 August 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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