Re: [squid-users] what is the maximum number of hosts squid can accelerate to?

Hi again,

I tried 2 of the ideas you gave me, but none worked well (probably my fault :))

Let me tell you what happened.

I compiled squid with the --disable-internal-dns option. The first thing I
noticed was that it started to ignore the "dns_nameservers" option in
/etc/squid.conf. To fix it I just changed my name server in /etc/resolv.conf to
127.0.0.1. Still, squid only sends requests to hosts 1 to 31, ignoring hosts 32
to 50. I ended this try here.

Using the /etc/hosts file I wasn't able to send requests to many hosts using one
single name. Squid only sends the requests to the first host in the list.
In this test I used the same type of configuration I use in the dns files, to
clarify let me give you an example:
/etc/hosts:
192.168.0.1 cluster.exemple.com <-- Only the first gets the requests
192.168.0.2 cluster.exemple.com
192.168.0.3 cluster.exemple.com
192.168.0.4 cluster.exemple.com
And so on...

Is it what you meant?

Anyway, let me do some ASCII "art" :) to make things clear

                       The Web
                           |
                           |
                          \|/
                            '
                     my.domain.com
            _________( Squid Host )_________
           | squid.conf: |
           |dns_nameservers 127.0.0.1 |
           | |
           | Redirector: |
           |my.domain.com -> cluster.my_lan |
           | |
           | Bind (127.0.0.1): |
           | cluster.my_lan |
           | ____________|____________ |
           | / | | | | | | | | \ |
           | A B C D E F G H ... XX |
           | |
           | /etc/hosts: |
           |192.168.0.1 cluster.my_lan |
           |192.168.0.2 cluster.my_lan |
           |192.168.0.3 cluster.my_lan |
           |192.168.0.4 cluster.my_lan |
           |192.168.0.5 cluster.my_lan |
           |192.168.0.6 cluster.my_lan |
           | . |
           | . |
           | . |
           |192.168.0.nn cluster.my_lan |
           | |
           |________________________________|
                           |
                           |
                          \|/
                           '
                (192.168.0.X my_lan)
          _____________________________________
         | WEB CLUSTER |
         | Serv A | Serv B | Serv C | Serv D |
         | Serv E | Serv F | Serv G | Serv H |
         | Serv ..................... Serv XX |
         |_____________________________________|

- Without "--disable-internal-dns" configure option
If Serv XX represents less than 30 servers, squid works well, else we get an
error

- With "--disable-internal-dns" configure option
If Serv XX represents more than 32 servers, squid ignores 33, 34, 35...

- Without Bind9 server using only /etc/hosts
No matter what I do, squid only redirects the requests to the first hosts in the
hosts file that matches cluster.my_lan)

Am I missing something here?

Thanx again!!

On Tue, Sep 28, 2004 at 08:23:22AM +0200, Henrik Nordstrom wrote:
> On Mon, 27 Sep 2004, Luiz Chopin C. Oliveira wrote:
>
> >This works perfectly if we configure Bind to translate "cluster.my_lan"
> >for a
> >number of servers that is less than or equal 29. Anything greater than that
> >squid replies with:
> >
> >"No DNS records"
>
> Try compiling Squid with --disable-internal-dns, or place the hosts into
> /etc/hosts instead of DNS.
>
> But I would recommend redoing the setup to use cache_peer for forwarding
> the requests instead of a redirector rewriting the URLs.
>
> Regards
> Henrik

-- 
Luiz Chopin Cruz de Oliveira
Analista de Suporte - luizcab@akwan.com.br
Akwan Information Technologies, http://www.akwan.com.br
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