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Date: Mon, 30 Oct 2006 08:24:02 -0800
From: Bill Moseley <moseley@hank.org>
To: users@httpd.apache.org
Message-ID: <20061030162401.GB3578@hank.org>
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Subject: [users@httpd] variable substitution in httpd.conf

Bad subject, but I normally generate my httpd.conf files via a
templating system so this isn't an issue, but yesterday I was working
on a config that listened on multiple IP addresses for name-based
virtual hosting.  That is:

    Listen 1.1.1.1:80
    Listen 1.1.1.2:80

    NameVirtualhost 1.1.1.1:80
    <VirtualHost 1.1.1.1:80>
        ServerName foo
    </VirtualHost>

    <VirtualHost 1.1.1.1:80>
        ServerName bar
    </VirtualHost>

    NameVirtualhost 1.1.1.2:80
    <VirtualHost 1.1.1.2:80>
        ServerName foo
    </VirtualHost>

    <VirtualHost 1.1.1.2:80>
        ServerName bar
    </VirtualHost>

I was wondering if there is a way to write that symbolically as I do
when using a templating system to build httpd.conf?

The reason this came up is I was moving to new IP addresses and was
wondering why I was typing the same value in more than one place.

That is:

    address_1 = 1.1.1.1:80
    address_2 = 1.1.1.2:80

    Listen address_2
    Listen address_2


    NameVirtualaddress_ address_1
    <Virtualaddress_ address_1>
        ServerName foo
    </Virtualaddress_>

    <Virtualaddress_ address_1>
        ServerName bar
    </Virtualaddress_>

    NameVirtualaddress_ address_2
    <Virtualaddress_ address_2>
        ServerName foo
    </Virtualaddress_>

    <Virtualaddress_ address_2>
        ServerName bar
    </Virtualaddress_>


-- 
Bill Moseley
moseley@hank.org


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