Case

Собственно net/balance.

Balance is a simple but powerful generic tcp proxy with round robin load
balancing and failover mechanisms. Its behaviour can be controlled at runtime
using a simple command line syntax.

The latest release now supports the definition of channel groups and
connection counting and handling boosting the power and versatility of
balance one big step further.

WWW: http://balance.sourceforge.net/

Установка:

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portinstall balance

Настройка производится в файле /etc/rc.conf:

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balance_enable="YES"
balance_hosts="web"
balance_web_flags="-a"
balance_web_address="80.92.110.82"
balance_web_ports="80"
balance_web_targets="172.16.127.10:80 172.16.127.11:80"