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caut root eth0 eth1 pt scanat contracost.ms

For today we will try to load balance 2 Debian servers. This tool can be used for servers like Web, Application, Gateway and so on. Toold used for this is named UCARP and is very good for high-availability servers. To be able to use it we must install it for both servers named in this example WS1 and WS2 using command: ~# apt-get install ucarp -y Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed: libpcap0.8 The following NEW packages will be installed: libpcap0.8 ucarp 0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded. Need to get 165 kB of archives. After this operation, 504 kB of additional disk space will be used. After installing we should edit /etc/network/interfaces file on both servers. For WS1 the config file will look like the next one: auto eth0 iface eth0 inet static address 192.168.69.10 netmask 255.255.255.0 network 192.168.69.0 broadcast 192.168.1.255 gateway 192.168.69.1 ucarp-vid 2 ucarp-vip 192.168.69.2 ucarp-password Hackyard ucarp-advskew 10 ucarp-advbase 1 ucarp-master yes auto eth0:ucarp iface eth0:ucarp inet static address 192.168.69.12 netmask 255.255.255.255 For WS2 the config file will look like the next one: auto eth0 iface eth0 inet static address 192.168.69.11 netmask 255.255.255.0 network 192.168.69.0 broadcast 192.168.1.255 gateway 192.168.69.1 ucarp-vid 2 ucarp-vip 192.168.69.2 ucarp-password Hackyard ucarp-advskew 20 ucarp-advbase 1 ucarp-master no auto eth0:ucarp iface eth0:ucarp inet static address 192.168.69.12 netmask 255.255.255.255 After done editing both interfaces config file we will restart interfaces using command: # /etc/init.d/networking restart Now load-balancing server is done. Author: razvan1@hy