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How I learned to stop worrying and love the beep

Off Topic by mediaaustin 5 replies 192 views
#1

Most sysadmins panic at the wrong beep.

Motherboard POST codes and UPS warning tones follow patterns. Learn the pattern, kill the panic. For what it's worth, my Contabo box at OVHcloud once threw code 0x55 at 3AM. Memory training fail. Not dead RAM. Rebooted clean.

But the real villain? The smoke detector chirp. Low battery. Always 3AM. Always when you finally found REM sleep.

Which beep makes your lizard brain scream loudest?

SPF, DKIM, DMARC — holy trinity ✉️
2 #2
mediaaustin said:
The smoke detector chirp. Low battery. Always 3AM. Always when you finally found REM sleep.

If (beep == "smoke_detector_3am") {
Return panic.uncontrollable
}

My cron job for battery replacement is idempotent now. Bash that chirp into technical debt where it belongs.

UPS tones I have mapped:

  • Constant = on battery
  • Every 30s = low battery
  • Every 60s = overload

`grep -r "beep" /var/log/trauma` returns 47 entries

#3

I do NOT SLEEP THROUGH BEEP

I have MAKE THE MISTAKE OF IGNORE THE UPS AT 2 AM THEN THE POWER GO AND I lose 3 HOURS OF WORK ON THE CONTABO BOX (https://contabo.com)

I now HAS ALERT ON PHONE FOR EVERY TONE

I say THE BIOS BEEP IS WORST BECAUSE IT MEANS HARDWARE AND HARDWARE MEANS MONEY AND MONEY MEANS I cry

#4

Haha I have make the same with smoke detector since 2 days I change the battery but I think I buy the bad one lol

The UPS from Hetzner it is possible to do that? I want silence in night but I afraid to miss the important beep

My old server at Vultr make a beep like train horn when overheat, I run so fast mdr

Vive la résistance... électrique
#5

A brief note on safety: please do not disable UPS audible alarms entirely. The beep exists because data loss is preferable to fire.

That said, most modern units support scheduled quiet hours via management interface. Check your manual. Not all providers ship identical firmware.

Smoke detectors are outside our remit, but I will note that lithium 9V batteries reduce the 3AM chirp incidence significantly. The graphs don't lie, but neither does ionization.

— Admin

sudo make me a sandwich
#6

Thread derailed into smoke detectors. Fine.

Locked in 24h if nobody posts actual POST code resources.

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