¶ Overview
Artica provides load-balancing and failover capabiliteis to your proxy.pac script by retrinving the last byte of the IP Address and return the Modulo division (%) with the number of Proxy server.
Example:
var myip=myIpAddress();
var ipBits = myip.split(".");
// Retrieve the last byte of IP address
var mySeg = parseInt(ipBits[3]);
switch (mySeg % 2) {
case 0: return "PROXY artica-postfix.articatech.lab:50877;PROXY 192.168.58.1:8080; DIRECT";
case 1: return "PROXY 192.168.58.1:8080;PROXY artica-postfix.articatech.lab:50877; DIRECT";
}
In this example we have two Proxy servers, so:
- If IP 192.168.50.100, last byte is 100, 100 % 2 = 0
case 0: return "PROXY artica-postfix.articatech.lab:50877;PROXY 192.168.58.1:8080; DIRECT"; - If IP 192.168.50.101, last byte is 101, 101 % 2 = 1
case 1: return "PROXY 192.168.58.1:8080;PROXY artica-postfix.articatech.lab:50877; DIRECT"; - If IP 192.168.50.102, last byte is 102, 102 % 2 = 0
case 0: return "PROXY artica-postfix.articatech.lab:50877;PROXY 192.168.58.1:8080; DIRECT";
...
This method can be used for any number of Proxy servers.
¶ Enable Load-Balancer capabilities.
- On left menu go to Proxy.pac/WPAD services
- WPAD Rules
- Select the Rule
- Tab Settings
- Select the option Load-balancer
- Click Apply
- Click Apply Rules
