HAProxy random HTTP 503 errors

Question

We\'ve setup 3 servers:

• Server A with Nginx + HAproxy to perform load balancing
• backend server B
• backend server C

Here is our

Answer 1

I had the same issue, due to 2 HAProxy services running in the linux box, but with different name/pid/resources. Unless i stop the unwanted one, the required instances throws 503 error randomly, say 1 in 5 times.

Was trying to use single linux box for multiple URL routing but looks a limitation in haproxy or the config file of haproxy i have defined.