vmstat and iostat on Linux: CPU, Memory, Swap and Disk Bottlenecks
Read vmstat and iostat on Linux: runnable processes, iowait, swap in/out, disk utilization and await, and what to…
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htop and top on Linux: CPU, Memory, Load Average and Swap Explained
Use free, top and htop on Linux to read CPU usage, memory, load average and swap; sort processes,…
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Proxmox Email and Webhook Notification Setup Guide
Configure Proxmox VE's Postfix mail relay and the Datacenter -> Notifications target/matcher system so backup failures and node…
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Monitor Proxmox with Prometheus pve-exporter (Complete Guide)
Monitor Proxmox VE itself in Prometheus and Grafana with pve-exporter: node health, storage usage, and VM state —…
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Prometheus + Grafana Monitoring Stack on Linux (Complete Setup Guide)
Build a Prometheus + Grafana monitoring stack on Linux: install Prometheus, deploy node_exporter on targets, connect Grafana, import…
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Linux Backup Verification Shell Script (Test Restore Integrity)
Verify backup integrity on Linux with a Bash script. Test gzip archives, SQL dumps, and tar files before…
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Docker Container Health Check and Auto-Restart Shell Script
Monitor Docker containers on Linux and auto-restart unhealthy or stopped containers with a Bash script and cron.
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Systemd Failed Units Report Shell Script for Linux
List failed systemd units on Linux with a Bash script. Daily report of failed services, timers, and mounts…
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