Re: K12OS: rsync as alternative to nis/nfs?
Chris Hobbs (chobbs@silvervalley.k12.ca.us)
Tue, 12 Feb 2002 16:41:06 -0800
Follow up to my own post. I did some more reading on rsync, and it looks
like it will work well for this. I've ordered a big, fast hard drive to
stick in one of my app servers to test this out on - nice thing is, I
can test it out on one server while leaving the others working exactly
the way they are in parallel.
The bidirectional thing turns out to be trivial - the only challenge
will be determining an appropriate interval - the shorter the better,
obviously, but there needs to be enough time to finish synching before
the next scheduled sync starts - trial and error will be the solution
here :)
I should be getting the drive (WD 40G, 7200rpm and Promise ATA 100 card)
on Thursday - I'll test it out and post the results here.
Nice thing is, this gives me a /ton/ more fault tolerance in the system
- instead of user data being only on the file server and tape, it'll be
on the file server, tape, and all six of my application servers - and if
the file server falls over for some reason, students can still work,
whereas now they are locked out if the file server is offline for any
reason (accidental reboots because I don't pay attention to what my KVMS
is pointing to being chief among them...).
/me wonders why he didn't think of this before.
/me wonders what he's missing now that will keep this from working :)
Chris Hobbs wrote:
> Does anyone know if rsync will work for this? I'm especially
> interested in the bidirectional effectiveness - if a user changes
> their password on app1, will it sync to the fileserver (and then from
> the fileserver out to the other app servers) so that they can use the
> new password on app2.
>
> Thoughts would be appreciated!
>
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