How a Simple System‑Time Change Sparked a Massive Outage

A junior ops engineer mistakenly set the production server clock ahead by a year, causing thousands of user accounts to expire, triggering a large‑scale outage, emergency fixes, financial loss, and harsh career consequences, while highlighting the need for proper permission and change management.

Permissionsdatabaseincident management

0 likes · 7 min read

How a Simple System‑Time Change Sparked a Massive Outage

Aikesheng Open Source Community

Oct 29, 2021 · Databases

Impact of Adjusting System Time on MySQL Runtime Behavior

The article investigates how changing the operating system clock while MySQL is running influences functions such as SLEEP, metadata lock (MDL) wait calculations, and other timing‑related mechanisms, demonstrating that forward or backward adjustments can cause premature exits or inaccurate wait measurements.

Database Performancelock_wait_timeoutmetadata lock

0 likes · 4 min read

Impact of Adjusting System Time on MySQL Runtime Behavior

Open Source Linux

Sep 28, 2021 · Fundamentals

Mastering the Linux ‘date’ Command: Display, Format, and Set System Time

This guide explains how to use the Linux date command to display the current date and time, customize output formats, and set the system clock, covering syntax, options such as -d, -s, -u, and practical examples for common tasks.

CLILinuxUnix

0 likes · 4 min read

Mastering the Linux ‘date’ Command: Display, Format, and Set System Time