They are not on a ups at the moment since these boxes are being test. Do u think this could be a power issue? ------Original Message------ From: compdoc Sender: centos-bounces@centos.org To: 'CentOS mailing list' ReplyTo: CentOS mailing list Subject: Re: [CentOS] Server reboots unexpectebly. Sent: Jan 16, 2011 12:24 PM
If its two servers doing the same, then I guess it's not likely they both have the same hardware problem. The thing is, that's not something centos is going to do on its own, so it's some program that's been added, or some common bios setting that's wrong.
Do they connect to a UPS with a serial/usb cable?
Also run memtest86 on them overnight (getting at least one complete
iteration).
I've seen one memtest iteration pass, but 2 or 3 were needed before a failure showed up. That's not usually the case, though...
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Lisandro Grullon lgrullon@citytech.cuny.edu wrote:
They are not on a ups at the moment since these boxes are being test. Do u think this could be a power issue?
Depending on the quality of your power, certainly it can be a factor. We generally have good power, but it's been years since I've run any system (even a test system) without a UPS because you never know when you'll get a notch or spike that'll ruin your day.
Static discharge can also play a factor if things (or people) aren't properly grounded.
Devin
On Sun, 16 Jan 2011, Devin Reade wrote:
To: CentOS mailing list centos@centos.org From: Devin Reade gdr@gno.org Subject: Re: [CentOS] Server reboots unexpectebly.
Lisandro Grullon lgrullon@citytech.cuny.edu wrote:
They are not on a ups at the moment since these boxes are being test. Do u think this could be a power issue?
Depending on the quality of your power, certainly it can be a factor. We generally have good power, but it's been years since I've run any system (even a test system) without a UPS because you never know when you'll get a notch or spike that'll ruin your day.
I'm running my home machine on an APC Back-UPS 650. It runs generally 24/7 and the UPS has saved my bacon lots of times.
It's reassuring to hear the UPS switch in when the mains suppy flunks out - for a even a split second or two.
Keith
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On 1/17/2011 7:50 AM, Keith Roberts wrote:
Depending on the quality of your power, certainly it can be a factor. We generally have good power, but it's been years since I've run any system (even a test system) without a UPS because you never know when you'll get a notch or spike that'll ruin your day.
I'm running my home machine on an APC Back-UPS 650. It runs generally 24/7 and the UPS has saved my bacon lots of times.
It's reassuring to hear the UPS switch in when the mains suppy flunks out - for a even a split second or two.
Keith
I really concur with what's been said. I always run every box on more than enough UPS - at least 3x more than I need. It still is no guarantee. Just had an XP machine blow chips off the board near the 1394 firewire area, and it took out the Seagate hard drive as well! Only thing I can figure is that I must have had a 'whisker growth' short?? Otherwise how could I've gotten a short across those components? Glad I had a full backup on a USB drive. Replaced board and drive - restored and back in business.
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Devin Reade -
Ed Westphal -
Keith Roberts -
Lisandro Grullon