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Re: Spontaneous PostgreSQL Server Reboot?

From: Andrew Biagioni <andrew(dot)biagioni(at)e-greek(dot)net>
To: pgsql-admin(at)postgresql(dot)org
Subject: Re: Spontaneous PostgreSQL Server Reboot?
Date: 2004-03-30 13:47:36
Message-ID: 40697A78.6070701@e-greek.net (view raw or flat)
Thread:
Lists: pgsql-admin
Alex,

the answer is "no" to all of these.  We are a tiny start-up (2 guys, and 
we do our own cleaning);  ambient temperature varies significantly but 
is not related to the failure, and one machine starts beeping when it 
gets too hot (then we added an extra case fan);  no fancy watchdogs 
(maybe someday...  One can only dream :-> );  three different cases, 
power supplies, motherboards, etc., etc. (one power supply is 
extra-large, and that's the machine that started failing first!).

We originally blamed the problem on hardware failure (first machine); 
then on OS version/configuration (second machine);  now we're out of 
things to blame, except maybe unusually bad luck...

Thanks,

		Andrew

Alex Satrapa wrote:

> Andrew Biagioni wrote:
> 
>> On three different machines running the same PostgreSQL version 
>> (7.3.5) on Linux and almost identical databases, I have been plagued 
>> by occasional, unexplainable (to me) reboots of the computer.
> 
> 
> 1) Do you have a software watchdog that is configured to reboot the 
> machine when it isn't tickled? The watchdog might possibly be rebooting 
> because the machine is under heavy load, or perhaps someone forgot to 
> enable the watchdog tickler.
> 
> 2) Was there anyone in the machine room at the time?  One office that I 
> worked in suffered random power outages to several machines for weeks on 
> end, until we figured out that the cleaner was unplugging the main 
> Ethernet switch to use the power point for their vacuum cleaner.
> 
> 3) Are the power supplies up to scratch?  some power supplies just can't 
> handle the load when you run disk and processor heavily for minutes on 
> end. The result is the same as a brown-out or black-out - power 
> disappears, machine reboots.
> 
> Hope this helps prod someone's memory!
> Alex
> 
> ---------------------------(end of broadcast)---------------------------
> TIP 8: explain analyze is your friend
> 
> 
> .
> 

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