Re: Multiple web instances assistance and comments

Nathan -

I configured an additional IP address on our current NIC using CFGTCP option
1 and attempted to start a Apache test instance on that address, port 80.
Received the following message every 5 seconds for 5 minutes (as the
documentation states will happen) and the test instance shut itself down:

 Message ID . . . . . . :   HTP803D       Severity . . . . . . . :   10
 Message type . . . . . :   Diagnostic
 Date sent  . . . . . . :   01/22/03      Time sent  . . . . . . :
14:26:56

 Message . . . . :   HTTP Server waiting for address 10.10.18.54 port 80 to
   become available.
 Cause . . . . . :   The HTTP server is attempting to bind to address
   10.10.18.54 on port 80, but the TCP interface or port is currently not
   available. The server is retrying the socket bind operation. The error
   number is 3420.  Error numbers and their meanings are:
     - 3420: Port already in use

Did I miss something?

Thanks,

Steve

"Nathan M. Andelin"
<nandelin=uLFwQiodB6j7ZPEc29C2Qq6+1OQI6iwo@public.gmane.org> wrote in
message 011601c2be79$bb732140$fbfea8c0@realdata">news:011601c2be79$bb732140$fbfea8c0@realdata...
> > From: "Steve McKay"
<steve.mckay=eHnG4ojNSJOrG/iDocfnWg@public.gmane.org>
> > Can we run 4 separate instances (each with their own IP
> > address) on the same NIC (Ethernet) and still use port 80
> > for each IP address?
>
> Yes.  OS/400 supports multiple IP addresses on a single NIC.  Each
instance
> of the HTTP Server can be configured to receive requests on the same port
> (80) of the unique individual IP addresses.
>
> > Or will the first instance started take control of port 80 to the
> > exclusion of the other instances?
>
> No.
>
> > If we do separate the apps to different instances, would we see any
> > performance benefit?
>
> No.  Performance may decline just a tad.  You'd need to come up with a way
> to properly route requests to the correct IP address.  What you're
proposing
> is probably slightly less scalable due to some extra load associated with
> routing requests across multiple addresses, and the extra load of running
> multiple HTTP server instances.
>
> > We want to separate the instances so we can shut down individual apps
> > without taking all of them down.
>
> Are these CGI apps?
>
> Nathan M. Andelin
> www.relational-data.com
>
>
>
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