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Help with Apache Virtual Host Config for Ubuntu Server 4 IPs

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Im trying to configure an Ubuntu server with 4 Public IPs to display "This is a shared IP site" if any of the IPs are accessed directly. The server has IP-based virtual-hosts configured on the different IPs. So far, Im not having any success with it.

posted Jun 25, 2013 by anonymous

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1 Answer

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Are you using the default Ubuntu configuration where each vhost is in its own file?If so, Ubuntu should load them in alphabetical order, so which ever vhost is loaded first for each IP will be the default one. Common practice is to rename the symlinks in /etc/apache/sites-enabled to something like ###-NAME (where ### is the order you want the vhosts loaded 000,001,002, etc). That will force (at least the Ubuntu-distributed version of) apache to load the vhosts in that order.
As long as your "This is a shared IP site" vhost is the first one loaded, it will be shown as the default site.You might need to explicitly bind the vhost to every IP address. Something like "*:80" wont do it.
I have a setup like this and it works really well.

answer Jun 25, 2013 by anonymous
Yes, this is the Ubuntu default configuration. I did as you suggested and it worked. Thanks for all the help.
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As soon as you start sharing resources between applications, you want to protect your platform and prevent an application from taking all the threads and cause a resource starvation for the others.

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It appears that I don't find any real alternative to substitute the mod_qos module with something else. Here are my questions :
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