Your '99.9% uptime' excludes 'scheduled maintenance'

tomchan

Member OP

Joined:: Jul 2024
Posts:: 202
From:: Bristol, UK

8mo ago · edited

8 #1

So I got this fun little project — monitoring my OVHcloud VPS with UptimeKuma, pushing alerts to a Telegram bot. It actually works! Been tracking for 6 months.

Last month my host had 14 hours of "scheduled maintenance." Four separate windows. My monitor shows 98.1% uptime for the month. Their status page shows 99.98% because "scheduled maintenance is excluded per section 4.2 of the SLA."

I get that planned work happens. But 14 hours in one month? And it doesn't count? I could schedule maintenance every Tuesday and advertise 100% uptime while my users get kicked weekly.

Has anyone actually won an SLA credit? What am I missing here?

# my uptime check, runs every 60s
*/1 * * * * curl -sf http://ovhcloud.com/health || python3 alert.py

works on my bench ¯\_(ツ)_/¯

dave39

Member

Joined:: Jun 2024
Posts:: 103
From:: Detroit, USA

8mo ago · edited

3 #2

Ive seen worse,,,,, Had a host once schedule "maintenance" every friday night for three months straight,,,,, Called it "proactive infrastructure optimization",,,,,, Still charged full price,,,,,

Slas are marketing documents not promises,,,,, Read the exclusions its where they hide the truth,,,,, ~~dave

GA

GardenTier

Member

Joined:: Jul 2024
Posts:: 4
From:: Stockholm, Sweden

8mo ago · edited

#3

I did not read full SLA, very long document sir. But now I understand why my monitor show different number from their status page sir.

Is there tool to track "real" uptime including maintenance sir? Thank you very much sir

van3

Member

Joined:: Aug 2024
Posts:: 42
From:: Ho Chi Minh City, Vietnam

8mo ago · edited

#4

I hos with RackNerd before very bad they say 99.9 but down all time ạ no schedule no warning just die ạ I move to HostHatch now better ạ

Your 14 hour is very long for plan work ạ something wrong with they infrastructure ạ

FyreJun

Member

Joined:: Mar 2024
Posts:: 120
From:: Osaka, Japan

8mo ago · edited

#5

Let us consider: if a user cannot access a service, does the intent of the operator truly matter? I apologize for speaking so directly.

I have taken the liberty of constructing a small calculator. One inputs the advertised uptime, the maintenance windows, and the observed failures. It outputs what I term "experienced uptime." I am sorry that it is written in Python and not a more elegant language.

def real_uptime(minutes, maintenance, unplanned):
    # section 4.2 be damned
    return (minutes - maintenance - unplanned) / minutes

I apologize for any errors in the code. It is offered with all due humility.

lucgone

Member

Le Baguette

Joined:: Jul 2024
Posts:: 296
From:: Lyon, FR

8mo ago · edited

#6

They write "99.95% excluding planned maintenance" but since 2 days my site is down 6 hours for "network upgrade" lol

I write them and they say "is in the contract sir" mdr

Now I use my own uptime calculator like @FyreJun I put maintenance inside, I put everything. Real number is 97.2% since 2 months. I think to change host.

Vive la résistance... électrique

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