HAProxy Configuration

10.1 Installing HAProxy

After preparing the dedicated Ubuntu Server virtual machine, HAProxy was installed using the Ubuntu package manager.

sudo apt update
sudo apt install haproxy -y

The installation was verified by checking the installed version.

haproxy -v

10.2 Configuring the Load Balancer

The main HAProxy configuration file is located at:

/etc/haproxy/haproxy.cfg

The configuration was modified to define:

• Frontend listener

• Backend application servers

• Load balancing algorithm

• Health checks

The frontend listens on port 80 and forwards requests to the ERPNext backend servers.

The backend pool consists of:

Round Robin scheduling was selected to distribute incoming requests equally across all healthy application servers.

10.3 Validating the Configuration

Before starting HAProxy, the configuration was validated.

sudo haproxy -c -f /etc/haproxy/haproxy.cfg

If no syntax errors were reported, the HAProxy service was started.

sudo systemctl restart haproxy

The running status was verified using:

sudo systemctl status haproxy