[FIXED] How to Configure Pfsense HAProxy HTTP HealthCheck Failover

Issue

I have two backend web servers, and i need to monitor them using httpcheck by checking the URL and looking for a string to be present in the response of the request. if the string is not available switch the backend to another server.

Status:

• Server1 - Active
• Server2 - Backup

Configuration Details:

• Health Check Method : HTTP
• HTTP Check Method : GET
• Url used by http check requests: /jsonp/FreeForm&maxrecords=10&format=XML&ff=223
• Http check version : HTTP/1.0\r\nAccept:\ XS01

Result of the http Request is

{"d":{"__type":"Response","Version":"4.5.23.1160","ResultCode":"XS01","ErrorString":"","Results":[{"__type":"Result",

so, I am expecting the string ResultCode":"XS01" in the response from the server, if the string found the server1 is up, if not bring the Server2 from the backup.

how can i achieve this in HAProxy Backend Health Check?

Solution

This can be done under Advanced Settings--> Backend Pass thru using the expect string,

http-check expect string XS01

Answered By - karhtik

Answer Checked By - Timothy Miller (PHPFixing Admin)