[LON-CAPA-admin] Adding Access servers
Guy Albertelli II
guy at albertelli.com
Wed Mar 30 16:32:00 EST 2005
[ Charset ISO-8859-1 unsupported, converting... ]
> Mark (and likely Guy),
> Thanks for the solution below. I took Mark's implementation to our network
> folks, and got this positive response with a caveat:
> > We can and will support the round-robin scheme for resolving IP
> > addresses. I should say I've never done it, so I'm not sure exactly
> > what all the possible gotchas are, but it's pretty standard practice and
> > should work.
> > We can't however accomplish this the way you describe. The feature
> > (actually it was considered a bug) that allowed an alias to point to
> > multiple systems ad described in the quote you sent was removed/fixed in
> > recent version of BIND.
> > The approved method of achieving the same result is to have multiple
> > hosts that actually have the same hostname. That is we could have two
> > hosts defined with the name "loncapa.mines.edu", each with different IP
> > addresses.
Some of these answers change in 2.0.
> So this brings me to questions probably for Guy:
> The hosts.tab file contains hostnames, LON-CAPA names, and IP addresses.
> 1) Will LON-CAPA choke if two IP addresses have the hostnames?
> 2) Should we then give our access servers the same, or different, LON-CAPA
access servers have to be completely unique. different IP, hostname,
> 3) Or is there some other way to manifest the load-balancing that I should
> point our network folks to?
Hrrm, not that I am aware of
We do this here:
$ host msu.loncapa.org
msu.loncapa.org has address 18.104.22.168
msu.loncapa.org has address 22.214.171.124
$ host 126.96.36.199
188.8.131.52.in-addr.arpa domain name pointer s1.lite.msu.edu.
$ host s1.lite.msu.edu
s1.lite.msu.edu has address 184.108.40.206
Lon-CAPA expects this.
guy at albertelli.com LON-CAPA Developer 0-7-2-9-
More information about the LON-CAPA-admin