smartctl on Linux: Check Disk Health (SMART Attributes and Tests)
Run smartctl on Linux to read SMART disk health: smartctl -a, PASSED/FAILED, self-tests, schedule short/long tests, and when…
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growpart on Linux: Resize Root Disk on AWS, Azure and KVM (cloud-init)
Expand a Linux root disk after your cloud provider increased volume size: growpart, rescan, resize2fs or xfs_growfs, LVM…
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Disk Space Alert Shell Script (df Threshold, Email, Cron)
Alert when Linux disk usage crosses a threshold: parse df -P, email warning with df output, per-mount limits,…
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Mount a Disk on Linux: Partition, ext4, mount and fstab (UUID)
Mount a new disk on Linux: lsblk, partition with fdisk, mkfs.ext4, mount, persist with /etc/fstab UUID and defaults,nofail,…
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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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LUKS Disk Encryption on Linux with cryptsetup (Complete Guide)
Encrypt a data disk with LUKS and cryptsetup: format, open, mount, keyfile auto-unlock, crypttab, and header backup.
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