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CPU Monitoring Commands in Linux: A Practical Guide Without Heavy Tools

Nov 03, 2026 Mariusz Antonik Automation 9 min read

Linux includes enough CPU monitoring commands to diagnose most small-server slowdowns without installing a large observability stack. This guide shows how to read load, utilization, process, wait, and pressure signals with uptime, top, ps, vmstat, mpstat, pidstat, and /proc/stat. It also provides a lightweight Bash sampling pattern and a weekly review workflow for spotting sustained CPU pressure early.

#bash monitoring #infrastructure-reporting #linux cpu monitoring #linux-commands #server health

Struggling With LPIC-1? A Practical Linux Study and Home Lab Checklist

Nov 02, 2026 Mariusz Antonik Automation 10 min read

Passing simple labs but struggling on a Linux exam usually points to a gap between recognition and recall, not a lack of ability. This checklist turns LPIC-1 or Linux+ objectives into short command-line drills, troubleshooting scenarios, and home-lab evidence. It also shows how Linux server monitoring can make practice measurable instead of random.

#linux administration #linux server monitoring #linux-home-lab #linux-plus #lpic-1 #Troubleshooting

MySQL Query Degradation: Detect and Reverse Performance Decline

Nov 01, 2026 Mariusz Antonik Database 8 min read

MySQL query degradation often appears as a gradual rise in response time, examined rows, or lock waits rather than a sudden outage. This guide explains how to compare stable baselines with current statement digests, execution plans, data growth, and host conditions. It also provides a measured recovery workflow and a compact weekly review for catching regressions early.

#database performance #infrastructure-reporting #MySQL monitoring #mysql slow queries #mysql-query-degradation

From Linux and Cloud Administrator to DevOps Engineer: Resume Evidence Checklist

Oct 31, 2026 Mariusz Antonik Automation 9 min read

A strong DevOps resume does more than list Linux, cloud, and automation tools; it shows how you improved delivery, reliability, and operational feedback. This checklist helps Linux and cloud administrators turn routine work into credible evidence across infrastructure as code, CI/CD, incident response, and Linux server monitoring. It also identifies practical portfolio gaps to close before applying.

#automation #ci-cd #cloud-administration #devops-career #infrastructure-as-code #linux server monitoring

Linux Monitoring Script: A Practical Lightweight Server Health Check

Oct 30, 2026 Mariusz Antonik Automation 8 min read

A Linux monitoring script can collect a focused set of server health signals without adding a large monitoring platform. This guide shows how to check load, memory, storage, services, ports, and recent failures while keeping output useful and safe. It includes a practical Bash example plus scheduling, retention, and threshold guidance. Use it as a starting point for lightweight Linux monitoring and weekly infrastructure reviews.

#bash-script #lightweight monitoring #linux server monitoring #linux-monitoring-script #server-health-check

How to Learn Linux Administration: A Structured Operations Roadmap

Oct 29, 2026 Mariusz Antonik Automation 11 min read

Moving from comfortable Linux user to capable administrator takes a structured practice loop, not an endless playlist of disconnected commands. This roadmap organizes fundamentals, networking, services, security, troubleshooting, and Linux server monitoring into hands-on stages. It also explains how to judge courses and certifications without treating any credential as a substitute for operational practice.

#linux administration #linux server monitoring #linux-networking #linux-troubleshooting #server-operations #system-administration

Server Health Summary: What a Useful Weekly Report Should Include

Oct 28, 2026 Mariusz Antonik Automation 8 min read

A server health summary should turn Linux, database, service, and backup evidence into a short list of risks and next actions. This guide explains which sections belong in a useful weekly report, how to add trend context, and how to avoid noisy metric dumps. It also provides a practical status model that developers and small business owners can review quickly. Use it to make routine infrastructure reviews consistent and actionable.

#infrastructure-reporting #Linux monitoring #server health reporting #server-health-summary #weekly-health-report

Baseline-Delta Linux Server Monitoring: Exposure and Process Checklist

Oct 27, 2026 Mariusz Antonik Automation 9 min read

A baseline-delta monitor can reveal newly opened ports, unfamiliar processes, and exposure changes without burying operators in raw logs. This practical checklist explains what to capture, how to classify changes, and how to avoid noisy or misleading alerts. It also shows where real-time change detection, conventional alerts, and weekly health reports each fit.

#baseline-delta-monitoring #linux server monitoring #network-exposure #open-port-monitoring #process-monitoring #server health

Infrastructure Reporting Tools: How to Choose Useful Weekly Reports

Oct 26, 2026 Mariusz Antonik Automation 9 min read

Infrastructure reporting tools turn Linux, database, and service data into evidence a small team can review and act on. This guide explains how reporting differs from monitoring, which signals belong in a useful weekly report, and how to compare products without buying another noisy dashboard. It includes an evaluation scorecard, a practical trial plan, and common warning signs. Use it to choose a reporting workflow that surfaces trends, ownership, and next actions.

#infrastructure-reporting #Linux monitoring #MySQL monitoring #server health #weekly-health-reports

Linux Support Engineer Interview: 12 Troubleshooting Scenarios to Practise

Oct 25, 2026 Mariusz Antonik Automation 11 min read

Technical interviews for software support roles often test how you investigate uncertainty, not how many commands you can recite. These 12 realistic scenarios cover Linux, Python, Bash, GitLab CI/CD, deployments, testing, and NFTables with a repeatable answer structure. Use them to demonstrate sound judgement, safe troubleshooting, and clear verification.

#Bash #gitlab-ci #linux server monitoring #linux-troubleshooting #nftables #Python #support-engineer-interview

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