[DGD] Uninterruptible Power Supply

[Littlefield, Tyler]

I totally understand. that's why I pointed out that a UPS allows you to
save before everything just dies. My landlord showed up to fix something
the other day and started flipping brakers. first I knew of it was when
my server and everything in my room just died. left me wanting for a
UPS, but also most residential electric companies provide no guarantees
about uptime. Our power goes out from time to time. I know I'm not going
to stay running, but I'd at least like to know so I can shutdown and do
it cleanly.
On 12/22/2016 11:05 AM, bart at wotf.org wrote:
> Indeed, but there is a huge difference between a planned reboot and an
> unplanned one.
> 
> When aiming for a persistent mud like both Shentino and me are doing, the
> 'uptime' of the mud is independent of the uptime of your machine, as you can
> continue from a statedump, but that does require being able to make that
> statedump before rebooting the machine. Planned reboots are no problem for
> that, unplanned reboots however can be quite a problem, resulting in restoring
> the mud to an older state then it was in when the reboot happened (and hence,
> causing losses to players which were online at that time)
> 
> So while you are right about long uptimes of a system, this actually doesn't
> apply as such to the uptime of a dgd based persistent mud.
> 
> aidil at Way of the Force: [43] /cmd/arch> uptime -v
> It is 16:58:01, total virtual uptime 8 years 103d10:57, 2 players.
> The system was first started 8 years 128d18:27 ago.
> The last restore was on dec 21 21:35.
> Memory: 291377392 bytes used, 298074216 bytes allocated.
> 
> So that is 8 1/3 years 'virtual' uptime for the mud, as you can see, I lost
> almost 25 days of uptime over those 8 1/3 years due to things like having to
> restore from a slightly older statedump or downtime of the server, or the mud
> not running due to being busy with an upgrade of the hardware or operating system.
> 
> Bart.
> 
> On Thu, 22 Dec 2016 10:33:30 -0500, Littlefield, Tyler wrote
>> Long uptimes are something that people gloat and cheer about for all 
>> the wrong reasons. a UPS isn't to allow you to stay up (since if 
>> your power is down, chances are internet will be too), but to allow 
>> you to properly save data before you drop it on the floor. A few 
>> years uptime is generally not a great idea since it means kernels 
>> haven't been updated, you haven't updated main libs which some 
>> services run on (and it's really realy hard to restart everything 
>> once you update and know for sure they're all restarted), etc. I 
>> take every server down once every 2 weeks or so, unless there's a 
>> big security update. BSD has hell with OpenSSL. Usually it's just a 
>> quick reboot and there we are again, up and running. On 12/22/2016 
>> 1:06 AM, Raymond Jennings wrote:
>>> I just got my desktop (and thus the server processes hosted on it) hooked
>>> up to a UPS...and I now have the great rich feeling of being immune to
>>> brownouts.
>>>
>>> Do any of you guys use a UPS to keep uptime going?
>>>
>>> Both commercial and hobbyist usages count.
>>> ____________________________________________
>>> https://mail.dworkin.nl/mailman/listinfo/dgd
>>>
>>
>> -- 
>> Take care,
>> Ty
>> Twitter: @sorressean
>> Web: https://tysdomain.com
>> Pubkey: https://tysdomain.com/files/pubkey.asc
>> ____________________________________________
>> https://mail.dworkin.nl/mailman/listinfo/dgd
> 
> 
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> ____________________________________________
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> 


-- 
Take care,
Ty
Twitter: @sorressean
Web: https://tysdomain.com
Pubkey: https://tysdomain.com/files/pubkey.asc