A faulty HPE software update caused an infinite loop in a backup script, unintentionally deleting 77 TB of critical research data from Kyoto University's supercomputers, highlighting the severe risks of automated backup processes and the need for rigorous change management.
This guide walks you through creating a .sh Bash script, adding a simple “Hello World” program, granting execute permission with chmod, and running it directly or via sh/bash, plus a practical backup script example that archives /var/log using tar.
This guide explains how to create, test, and apply boolean-like variables in Bash, covering numeric (0/1) and string (true/false) representations, conditional checks, and practical examples for cron jobs and backup scripts on Linux/Unix systems.
This article recounts a real‑world MySQL migration from Docker Swarm containers to an Alibaba Cloud RDS instance, detailing the original architecture, migration steps, backup scripts, a critical index‑missing outage, and the practical indexing strategies used to restore performance.
