Next, we’ll set the default config that will apply to all listen blocks if they don’t make any changes to it: defaults In this case, that would be but you can view a demo of it here. The last few lines turn on HAProxy’s built in statistics page, which you can view by navigating to the URI in your browser. The maxconn setting specifies the max concurrent connections, and user and group specify which Unix user HAProxy operates as. You’ll need to have a server like rsyslog running to make use of this. The log setting specifies the syslog server that HAProxy sends logs to. We’ll start by archiving the default configuration file: mv /etc/haproxy/haproxy.cfg /etc/haproxy/Ĭreate a new config file in its place, and start by adding a few global settings: global Now, if you run service haproxy, you should see that it is enabled and ready to be configured.
Next, you’ll need to turn it on by editing the init script at /etc/default/haproxy and setting ENABLED to 1: ENABLED=1
#Haproxy load balance install
For Debian based systems like Ubuntu, that would be: apt-get install haproxy
#Haproxy load balance how to
How To Set Up HAProxy Load Balancingįirst, install HAProxy from your distro’s package manager.
#Haproxy load balance full
For it to be truly resilient, you’ll want to have a backup HAProxy server, in case your load balancer goes down.Įven with HAProxy, you’ll still often want a full site CDN in front of it, both to handle additional load and to have multiple points of presence closer to the end user. If one web server goes down, HAProxy can route traffic to the rest while you diagnose the issue. HAProxy also allows your network to be more resilient. Ideally, you want both your HAProxy server and your web servers to be hosted in the same datacenter, from the same cloud provider, to cut down on latency. HAProxy is very lightweight, and doesn’t need a lot of resources to operate, so you can use a single load balancer for many backend servers. Instead of pointing your IP at your web server, you’d point it at an HAProxy server, which would decide where to send it from there. Load balancers like HAProxy allow you to split traffic over multiple servers, making it easier to handle. It’s commonly used for balancing HTTP, and can help solve traffic problems on your web server. HAProxy is an open source load balancer, capable of balancing any TCP based service.
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