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Posted to bugs@httpd.apache.org by bu...@apache.org on 2005/03/23 14:43:31 UTC
DO NOT REPLY [Bug 34148] New: - "Listen" directive is too fascist

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http://issues.apache.org/bugzilla/show_bug.cgi?id=34148

           Summary: "Listen" directive is too fascist
           Product: Apache httpd-2.0
           Version: 2.0.53
          Platform: PC
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: Core
        AssignedTo: bugs@httpd.apache.org
        ReportedBy: d.tonhofer@m-plify.com


The "Listen" directive, if used with an IP addres, like this:

Listen 63.112.169.1:80

will prevent Apache from starting up if that IP address is not bound
to any interface. 

IMHO, as long as there is at least one IP address on which Apache *can*
listen, it should complain 'IP address X does not exist, not listening'
but otherwise start normally.

This behaviour is shown for the 'Virtualhost' directive. If you declare
a Virtualhost bound to IP address X but X is not bound to any interface of
your machine, this is *not* an error. 

Why would anyone need this?

I have a range of machines and websites. Each website has its own IP
address, separate from the machine's IP address. 

What I want to do is be able to move a website from machine to machine without
*any* editing of httpd.conf.

In the ideal case, I would say in httpd.conf:

Listen <IP-website1>:80
Listen <IP-website2>:80
Listen <IP-website3>:80

Then, on machine 1, I assign <IP-website1> and <IP-website3> to the NIC,
restart Apache, and we are rolling.

On machine 2, I assign <IP-website2> to the NIC, restart Apache, and all
the websites are up.

Good idea or what?

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