-----Original Message----- From: centos-bounces@centos.org [mailto:centos-bounces@centos.org] On Behalf Of Alan Hodgson Sent: Wednesday, August 12, 2009 12:21 To: CentOS mailing list Subject: Re: [CentOS] Dangerous Software Raid instructions on Wiki
On Wednesday 12 August 2009, Ray Van Dolson rayvd@bludgeon.org wrote:
My successor at my previous job has gleefully followed those instructions (he seriously needs a clueby4 which is why
he bothers
to actually read HowTos) and on a production box (who
wants pop-corn
and soda? Sorry, the er support conversation will not be
on irc) and
I think this seriously highlights the need for HowTo writers to seriously consider their audience as dumb monkeys that
just follow
Confusing sarcasm aside, there is value to not having high damage command able to be so easy to copy, paste, destroy.
How about /dev/sdX /dev/sdY and call it a day.
whatever you tell them to do without thinking if you do
not list out
things they first have to think about or questions they
first need to answer.
I think this seriously highlights the need to hire competent system administrators.
The reason you want to wipe the beginning of the drive is that some fake-raid controllers write crap to the drive and if you leave it there some linux installers (anaconda, at least) will install dm-raid using that info rather than setup md raid using normal linux conventions. Which is exactly what that section of the instruction says. My kickstart scripts do the same thing and for the same reason.
Let me be even more clear - if your successor doesn't know what dd does, or what drives correspond to /dev/sda and /dev/sdb in the box he's working on, he has no business being within 10 feet of a production server without careful supervision.
within 10 feet of a production server WITH OR without careful supervision.
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