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At 7:09 PM -0400 5/9/01, Suzanne Swift wrote:
Re: Load balancing
From: Men & Mice Support
Date: Friday, May 11, 2001
Time: 3:08:00 am
>What will happen if I load balance 30 or 40 domain names?
- The Load Balancer application will become very busy.
- The Server application will need to spend quite a bit of time
keeping track of that many load balance records.
- Your web servers will each get 30-40 connections per QuickDNS Load
Balancer app per <interval> seconds, in addition to whatever normal
traffic they're serving. So if you have two QuickDNS Server machines,
each running Load Balancer, and if the "interval" setting of each
load balance record is set to 30 seconds, then your web servers will
each get 60-80 connections per 30 seconds, which translates to 2-3
connections per second, just from the load balance mechanism.
>Can you give me an example of what "changing all but one of them to CNAME
>records" would look like. I'm not getting it.
Suppose you currently have three zones with load balance records, all
of which are identical except for the name. Suppose they are:
www.example.com.
www.example.net.
www.example.org.
Now suppose example.com is your main domain, where you've defined the
A records for your DNS and mail servers. You would do the following:
- Leave www.example.com unchanged.
- Delete the load balance records named www.example.net and www.example.org.
- In the example.net zone, where you used to have www.example.net as
a load balance record, you'd create the following record:
www.example.net. CNAME www.example.com.
- In the example.org zone, where you used to have www.example.org as
a load balance record, you'd create the following record:
www.example.org. CNAME www.example.com.
Clear now?
____________________________________________________________________
Chris Buxton Men & Mice
cbuxton@menandmice.com We Make DNS Easy!
> >All you have to delete and recreate is your load balance record(s).
> >
> >Of course, if you have multiple load balance records with identical
> >settings and different names, you should consider changing all but
> >one of them to CNAME records. QuickDNS' load balance feature wasn't
> >designed to handle large numbers of load balance records.
> >____________________________________________________________________
> >Chris Buxton Men & Mice
> >cbuxton@menandmice.com We Make DNS Easy!
> >
> >At 3:28 PM -0400 5/9/01, Suzanne Swift wrote:
> >>That's exactly what happened. So what should I do now? Do I delete out
> >>all the work I did and start over?
> >>
> >> >At 8:39 PM -0400 5/8/01, Suzanne Swift wrote:
> >> >>I'm implementing load balancing and have run into what may be
>a problem.
> >> >>
> >> >>When I open a zone and double click on the load balance
>record, I get the
> >> >>following message:
> >> >>
> >> >>"You are not connected to one or more slave servers for the
>load balance
> >> >>record. Changes made in this window will not be saved to
>those servers."
> >> >>
> >> >>In the slave server window is the follwing:
> >> >>
> >> >>my slave server ip (NOT CHECKED OFF)
> >> >>primaryip.domainname.com
> >> >>secondaryip.domainname.com
> >> >>
> >> >>(THE BOTTOM TWO ARE CHECKED OFF, BUT ARE GREYED OUT)
> >> >>
> >> >>Is this right? If not, how do I get rid of the bottom two?
> >> >
> >> >No, this is not right. This indicates that, at some point when you
> >> >created or modified the load balance record, you were connected to
> >> >your server by IP address. Never do this when creating or modifying
> >> >load balance records; always connect to your servers by name.
> >> >
> >> >When I say "connected by ...", I mean in the connection dialog in
> >> >Manager. When you connect to your server, you are asked for your
> >> >server's name or IP address, as well as your password. (This may be
> >> >handled automatically, if you have auto-connect to servers selected
> >> >in the preferences.)
> >> >
> >> >Ideally, you never connect by IP address. There are a few cases,
> >> >generally early on in the setup process, when this is your only
> >> >choice, because there is no hostname that Manager can resolve that
> >> >points to the server. However, this should be done as little as
> >> >possible.
> >> >____________________________________________________________________
> >> >Chris Buxton Men & Mice
> >> >cbuxton@menandmice.com We Make DNS Easy!
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