Cpu Memory

Common Problems 117485

High CPU from tracker-miner-fs

🟢 Low   ⏱ 5–30 min  Last verified: 15 August 2022 Affected versions: 20.04 📖 ~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 […]

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How to Configure Ceph Storage Cluster on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Configure Ceph Storage Cluster on Debian 11

Introduction How to Configure Ceph Storage Cluster 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 11. […]

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How to Set Up the ELK Stack on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Set Up the ELK Stack on RHEL 9

The ELK Stack — Elasticsearch, Logstash, and Kibana — is a battle-tested open-source platform for centralizing, parsing, and visualizing log data at scale. Elasticsearch stores and indexes logs, Logstash ingests and transforms them, and Kibana provides a browser-based interface for searching and dashboarding. Running the ELK Stack on RHEL 9 gives you a self-hosted alternative […]

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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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How to Set Up OpenMPI on IBM AIX 7.3 — step-by-step IBM AIX 7.3 tutorial on Progressive Robot

How to Set Up OpenMPI on IBM AIX 7.3

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 set up openmpi on IBM AIX 7.3 with practical […]

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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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Common Problems 116984

Ubuntu 22.04 LTS High Memory Use from snapd

🟡 Medium   ⏱ 5–30 min  Last verified: 4 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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How to Install GCC and Build Essential Tools on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Install GCC and Build Essential Tools on Debian 11

Introduction This guide explains how to Install GCC and Build Essential Tools 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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