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I have 3 IPs in my server, I want use them to increase twitter API limits.

How to set a different ip for a directory in centos 6.1 httpd.conf (Apache 2.3.1)

I added these line in the bottom of httpd.conf

<VirtualHost NEW IP:80> ServerName mydomain.com/subdir ServerAlias www.mydomain.com/subdir DocumentRoot /var/www/html/subdir <directory "/var/www/html/subdir"> Options Indexes FollowSymLinks AllowOverride all Order Deny,Allow Allow from all </directory> </VirtualHost>

But when I test /var/www/html/subdir/index.php with code

<?php function get_server_ip() { if (isset($_SERVER)) { if($_SERVER['SERVER_ADDR']) { $server_ip = $_SERVER['SERVER_ADDR']; }else{ $server_ip = $_SERVER['LOCAL_ADDR']; } }else { $server_ip = getenv('SERVER_ADDR'); } return $server_ip; } echo get_server_ip(); ?>

it still return OLD IP (default ip for my server). So is it possible and how? If it couldn't, how to use 3 IPs to increase twitter API limits.

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1 Answer 1

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Doing an apache configurations is not enough. To make it work you have to configure multiple IP Address into your Centos (RedHat) box.

Assuming that you have only one phisical network interface eth0, then you have this file that contain all the relevant parameters :

$ cat /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 BOOTPROTO=static BROADCAST=192.168.0.255 IPADDR=192.168.1.1 NETMASK=255.255.255.0 NETWORK=192.168.1.0 ONBOOT=yes

(This is a sample statical ip configuration for IP=192.168.1.1, yours may and will vary)

All this is explained here: CENTOS-Network Configuration Files and CENTOS-Interface Configuration Files

To assign another IP to the same phisical network interface eth0 do this (as root) :

$ cd /etc/sysconfig/network-scripts/ $ cp ifcfg-eth0 ifcfg-eth0:1 $ vi ifcfg-eth0:1

and then change IPADDR to the new file (and check/change all the other parameters)

You can do the same for third new IP doing cp ifcfg-eth0 ifcfg-eth0:2 and edit the file.

Then you have to restar network to apply changes (stop apache before):

$ service network restart

Check the new config :

$ ifconfig

You will see listed the interface configuration for eth1 , eth1:1 , eth1:2 (and probabily more iterfaces like lo -> loopback )

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