[ale] Little OT: Bad Linux Sysadmin Practices

[Brian Mathis]

That actually is what dual power supplies are for, and it's not a
problem as long as you configure load shedding on the PDU.  In a
situation like this, you only lose the low priority stuff.  Otherwise
there's little point to having redundant power feeds.


❧ Brian Mathis


On Thu, Oct 11, 2012 at 3:54 PM, Jeff Hubbs <jhubbslist at att.net> wrote:
> Yeah, actually:  deciding that dual power supplies on servers were "for
> redundancy" - but not the right kind, and wiring each one up to separate
> circuits.  Do that all or most of the way up a rack until PDUs on both
> sides are nearly maxxed out, such that when one power supply fails, that
> server's entire load falls on the other PDU and trips its breaker - then
> the first PDU's break trips in milliseconds because the entire load just
> got dumped on it...crash the whole rack.  Of course, the bosses wouldn't
> listen to the EE major who saw this coming, and the guys who cabled up
> this house of horrors are probably still there...
>
> Wonder why I left the industry??
>
>
> On 10/11/12 3:30 PM, Boris Borisov wrote:
>> http://tuts.pinehead.tv/2012/10/10/how-to-make-your-boss-angry-bad-linux-sysadmin-practices/
>>
>> Can you add something to it ?