Preventing Accidental Reboots with Molly-Guard

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Until a few weeks, I hadn’t heard of a Molly Guard. But after my coworker accidentally rebooted our production NAS, I was tasked with creating a script that kept you from rebooting the wrong server. I wanted it to be much like the Dell Equal Logic PS Series’ [

Until a few weeks, I hadn’t heard of a Molly Guard. But after my coworker accidentally rebooted our production NAS, I was tasked with creating a script that kept you from rebooting the wrong server. I wanted it to be much like the Dell Equal Logic PS Series’]3 command that requires you to type “DeleteAllMyDataNow” (which is the best “are you sure?” message ever).

Legend has it that a mainframe programmer’s daughter Molly kept hitting the Big Red Button to power down the mainframe, so he created a Plexiglas cover as a “Molly-Guard” to keep little Molly from hitting the button again.

Well, the good folks over at Debian createda package called¬†“molly-guard” for Debian systems… which is great, unless you don’t run Debian or a derivative thereof. So for Red Hat Enterprise Linux (RHEL) and its derivatives like CentOS or Scientific Linux, a very generous person modified it and released it for RHEL.

http://lazarus-corner-of-the-world.blogspot.com/2012/11/rpm-builds-for-molly-guard.html

Note: Molly-Guard only works via ssh, not on the console. It assumes you know what you’re doing on the console.

I created a github repo for it so that the code doesn’t disappear someday:¬†https://github.com/tmhorne/molly-guard

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