[CentOS] "installation source" specification for netinstall

[Gordon Messmer]

On 12/15/2015 04:09 PM, ken wrote:
>> I'm not sure why that wouldn't work.  I'm pretty sure you need to use a
>> repository whose version matches the ISO, but that should be the case
>> unless you got the netinstall ISO before 7.2 was released.
>>
>> Maybe pick a specific mirror, such as
>> http://mirror.sfo12.us.leaseweb.net/centos/7/os/x86_64/
>> (https://www.centos.org/download/mirrors/)
>
> Tried the one above and a lot of others replied to John, many others. 
> This is one of those  situation where accurate understandable 
> documentation would be worthwhile. 

To be fair, an accurate description of what you're doing would be 
worthwhile, too.

I downloaded 
http://mirror.sfo12.us.leaseweb.net/centos/7/isos/x86_64/CentOS-7-x86_64-NetInstall-1511.iso.

Its sha256sum is 
9ed9ffb5d89ab8cca834afce354daa70a21dcb410f58287d6316259ff89758f5, which 
matches sha256sum.txt.

I booted from the ISO, selected "installation source" and entered 
"mirror.sfo12.us.leaseweb.net/centos/7/isos/x86_64/" in the field to the 
right of the "http://" prefix.

Anaconda downloaded the package list and allowed me to select package 
groups.