How to Set up HAProxy on CentOS
HAProxy is a service that can help with load balancing of web servers, or just proxying traffic. We recommend installing through the Epel repository to keep the packages updated.
Run the following commands:
yum -y install epel-release
If yum does not find the epel-release package, please see How to enable epel with RPM for installing it via RPM.
Run the following command:
yum -y install haproxy
Once it has been installed, you can edit the config file by running the following:
Sample configuration for Web Server Proxy
global # Where to save the logs, log 127.0.0.1 local2 info chroot /var/lib/haproxy pidfile /var/run/haproxy.pid # Max connections per process maxconn 256 # User and group process runs under user haproxy group haproxy daemon defaults # Mode the server is running in mode http log global option httplog timeout connect 10s timeout client 30s timeout server 30s # Define Frontend (set any name for http-in section) frontend http-in # Set server to listen on port 80 bind *:80 # Set default backend to forward traffic to default_backend backend_servers option forwardfor # Define Backend server with roundrobin mode backend backend_servers # Set balance type as roundrobin balance roundrobin # Define backend servers server <hostname> 10.0.0.31:80 check server <hostname> 10.0.0.32:80 check
Auto-start for CentOS 7
To get HAproxy to run automatically after configuration run the following commands:
systemctl start haproxy systemctl enable haproxy