Load Average Alert Shell Script for Linux (Email, Threshold, nproc)
Monitor Linux load average with a Bash script: compare to CPU count, email when hot, attach top snapshot,…
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watch Command on Linux: Monitor df, ss, and Logs Every Few Seconds
Use watch on Linux to rerun commands on an interval: watch -n 2 df -h, highlight changes with…
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Linux free Command Explained: Memory, available, Swap and When RAM Is Full
Understand free -h on Linux: total, used, free, available, buffers/cache, swap, MemAvailable vs free column, and when to…
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Email Alert on Script Failure Shell Script (mail, Logging for Cron)
Wrap cron jobs with a Bash script that emails admins when a command fails — using mail/mailx, capturing…
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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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